Managingyour oil
contamination
RMF SYSTEMSRadialMicro
Filtration
RMF Systems / Doedijns HydraulicsThe name RMF Systems has become synonymous with the latest developments
in filtration technology. RMF filter units are the most complete and efficient
filter series available today. Worldwide a great success in a huge range of
hydraulic applications. The solution to contamination problems which cause
more than 80% of all hydraulic malfunctions and component defects.
The filter units of RMF Systems have a large dirt and water collection capacity
and are famous for their excellent filtration efficiency.
Costly main flow filters are protected and malfunctions are reduced to a
minimum. Oil life is increased resulting in lower oil change frequency and less
machine downtime.
The wide range of RMF products consist of: Air conditioners, By-pass units,
Off-line units, Off-line units with water sorb, Heated Off-line units, Off-line
units air driven, Vacuum dehydration units, Filter elements and By-pass lube
oil units.
Doedijns organisation
The brand RMF Systems is registered, designed, developed and produced in-
house by Doedijns Hydraulics B.V. in The Netherlands.
Doedijns Hydraulics is a leading manufacturer and supplier of fluid power
solutions and one of the largest independent specialists in the Benelux in
the field of hydraulics, measurement, control systems and oil management.
Alongside sales of leading branded components, the organization specializes
in the development, assembly, production, implementation and after-sales
service of custom-made systems for the industrial, mobile, maritime and
offshore industries.
Doedijns Hydraulics B.V. forms part of Doedijns
International B.V. (head office in The Netherlands),
an international force in the field of hydraulics,
pneumatics and instrumentation.
Doedijns International is a healthy growing
organization with more than 250 employees and
several branches in Europe and Asia.
RMF team / worldwide distribution network
The products of our RMF Systems filtration
programme find their way to the customers
through a worldwide RMF distribution network.
Besides an excellent competitive, innovative
product range and substantial technical &
informative literature in a range of modern media,
the sales support to our RMF distributors
is provided by the RMF team of Doedijns
Hydraulics. A highly qualified team with a wealth
of experience and expertise.
The specialists of our RMF team are on hand
to answer questions and address concerns
on any aspect of oil management. They pay
our distributors regular visits, are present on
international exhibitions and provide an active
education & training program that aids the
exchange of expertise.
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1
IndexGeneral information RMF Systems 2
RMF ISO Cleanliness levels 10
Air conditioners (dessicant breathers) 12
By-pass filters 16
Off-line filters 22
Water absorbing Off-line filters 26
Heated Off-line filters 30
Air driven Off-line filters 34
Mini Water Vac (vacuum dehydration unit) 38
Lube oil By-pass filters 42
Filter elements 44
2
General information RMF Systems
System contamination
In the hydraulic market it is an accepted fact that contamination causes 80% of
all mechanical failures. This contamination results from the presence of solid
particles such as metal, sand and rubber in oil.
Mainstream filters are incapable of removing the smallest particles, smaller
than 2 micron (better known as silt). Fluctuations in the supply and the
resulting changing conditions (flow and pressure surges) mean that these
filters cannot carry out fine filtration; most of the silt remains in the system
and affects the chemical composition of the oil.
Changes in temperature cause water vapour to condense, resulting in unwanted
water in the oil. The presence of this free water helps to accelerate the
deterioration of the oil.
The combination of water and small copper particles will also create a catalytic
effect which can shorten oil life considerably.
All these problems lead to reduced oil usage life and increase component
wear, maintenance cost and machine down time.
Removing silt and preventing the formation of free water can combat these
problems and reduce the operating cost.
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3
Micro filtration
At the heart of the RMF Off-line and By-pass filter is the unique micro filter
element. This filter works according to the radial through-flow principle.
As it has a filter fineness of 0.5 micron, it is able to remove the smallest of
contamination particles (silt) from the oil.
The filter material is composed primarily of cellulose, which is produced by a
special wrapping method. This material is capable of retaining solid particles
and absorbing water. This helps to prevent the chemical deterioration of the oil
and the formation of various acids and sludge.
A complete range of glass fibre pleated elements in 1, 3 and 5 micron is also
available, including high water retention elements.
Air conditioning
Water vapour in reservoirs condenses due to temperature changes and cause
not only oxidation of the oil, but can also lead to serious mechanical wear in
the system.
Standard air breathers remove a certain amount of solid particle contamination
from the air but allow water vapour to pass through freely.
The special RMF ’Air conditioners’ ensure that incoming air is first dried and
then filtered, allowing only clean dry air to enter the reservoir.
4
off-line filtersRMF Off-line filter units can be applied to every imaginable industrial
application where hydraulic or lubrication systems are present. An integrated
pump-motor unit draws fluid out of the tank, filters it and pumps clean oil back
into the system.
Off-line filters can continue to work even when the main system is not in use.
Element change can also be done without interfering with the main system.
The standard range offers filter units for reservoirs with a capacity of up to
11,000 litres.
Choices of electrical or air motors are available to suit all industrial
requirements and a large selection of filter elements makes it possible to
customize the unit to every specific application. If required pre-filters can fitted
to every type. The Off-line filter units are very simple to install.
Over the years, RMF Systems have developed considerable experience in
cleansing hydraulic and lubrication systems, helping to keep them clean and
reduce down time. Successful applications can be found in the following
industries:
- steel;
- plastic injection moulding;
- power generation;
- marine;
- pulp & paper;
- cement;
- flight simulator.
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Heated off-line filtersThe ’Heated unit’ is a unique progression of the Off-line filter series.
The filtration of high viscosity oils, in both hydraulic and lubrication systems, is
an almost impossible task for fine filters as the thickness of these oils ’block’
almost all normal filters.
The RMF Heated unit warms the oil in a specific manner, allowing the viscosity
to be reduced to a level which will permit fine filtration without the oil being
exposed to too high temperatures that could cause overheating and burning of
the oil, rendering it useless.
An internal labyrinth in the heater tube ensures the fluid has a long duration
of stay to increase contact time with the heating element achieving maximum
possible temperature transfer. An adjustable thermostat allows exact tempera-
ture settings while a maximum thermostat prevents overheating.
The Heated units have proved their worth over a long period and are frequently
applied to:
- gearbox lubrication systems;
- wind power drive systems;
- outdoor hydraulic systems;
- marine hydraulic systems.
6
By-pass filtersThe RMF By-pass filter units are especially designed for mobile applications in
the hydraulic and/or transmission systems.
In the absence of a pumped system, the oil is drawn from the main system
by means of a specially designed and integrated pressure compensated flow
control valve. The amount of oil extracted from the main system at any time is
insignificant ensuring that it will not affect the working of the main system.
Most commonly used biodegradable oils in the mobile sector are suitable for
filtration with RMF filter elements.
The By-pass filters can also be equipped with an additional special spin-on
water absorbing pre-filter. They can accommodate a range of different filter
elements to suit any specific requirement.
Over the years, RMF Systems have developed considerable experience in
cleansing hydraulic and transmissions systems, helping to keep them clean,
extend equipment life and reduce cost of ownership (operating costs).
Successful applications include:
- excavators;
- wheel loaders;
- forestry machines;
- asphalting machines;
- cement mixers;
- aircraft ground support equipment;
- sugar cane harvesters;
- agricultural machines.
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AcT IVE
REPlAcE
7
Air conditionersStandard air breathers remove a limited amount of solid particle contamination
from the air, but allow water vapour to pass through freely.
RMF ’Air conditioners’ (desiccant breathers) are highly effective in removing
both solid particles and water vapour from the air.
The RMF ’Air conditioner’ allows tanks to breathe clean, dry air.
The revolutionary Z-R gel granules dry the air before it enters the oil tank.
This dry air is then filtered by a 3 micron glass fibre (replaceable) spin-on air
filter. The air which enters the oil tank is then clean and dry.
The uptake of moisture can be observed by the change in colour of the
indicator granules in the Z-R gel. They turn from ruby red (active) at the
beginning to a very light orange at saturation (replace). The Z-R gel granules
are completely replaceable, non toxic and non carcinogenic.
An optional contamination indicator shows when the air filter is in need of
replacement.
RMF ’Air conditioners’ can be applied to hydraulic drive systems, gearboxes,
diesel storage tanks and a wide variety of other uses. Examples of successful
RMF ’Air conditioner’ applications can be found in the:
- steel industry;
- paper industry;
- cement/concrete industry;
- petrochemical industry;
- aircraft industry;
- wind energy industry;
- mining industry;
- plastic industry;
- maritime industry.
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The advantages of RMF Systems
less malfunctions
The tolerances between moving parts in servo valves and proportional valves
are constantly reducing. The result is that even the smallest amounts of silt can
cause damage to the system. RMF filters remove this silt.
Protection of expensive main stream filters
RMF Systems filters are applied in By-pass or Off-line configurations and
constantly clean the oil from the reservoir. The oil which reaches the main
stream filter is therefore cleaner and allows longer usage life of this expensive
filter. The main stream filter then acts primarily as an emergency filter.
less frequent oil changes
Increasingly strict environmental laws in the area of oil changes, oil storage
and the disposal of used oil lead to corresponding cost increases. RMF filters
mean less oil changes, and therefore less costs.
Extended usable life of the oil
Frequent oil changes are generally the result of chemical deterioration of the oil
caused by the oil oxidation process. This process is brought into action by the
presence of silt. If water is also present, this acts as a catalyst and the oxidation
process is accelerated. RMF filters remove silt AND water from the oil.
less machine down time
Reduction of defects caused by worn components and less frequent oil changes
mean an increase in production time.
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9
RMF characteristics in short
The oil filters have:
- a filter fineness in the range of 0.5 - 5µ;
- large particle collection capacity;
- high filtration capacity due to depth effect;
- large water absorption capacity;
- a full range of filter elements.
RMF Systems filters:
- do not adversely affect viscosity or additives;
- do not remove additives;
- reduce the oxidation process;
- reduce the forming of acids;
- SAVE COSTS.
Measuring points
To facilitate quality control of the oil, the RMF By-pass and Off-line oil filters are
equipped with two quick connect measuring points to which a particle counter
can be attached. This offers the possibility of measuring the oil cleanliness
level on-site and under working conditions.
The measuring points also allow oil samples to be drawn for external analysis.
The solution
RMF Systems offer the most complete and efficient filter series available today.
RMF Systems is THE solution to your contamination problems: simple to fit,
equipped with extremely efficient filters and offering the opportunity for simple
control of oil cleanliness.
10
250,000,000.5
130,000,000.5
64,000,000.5
32,000,000.5
16,000,000.5
8,000,000.5
4,000,000.5
2,000,000.5
1,000,000.5
500,000.5
250,000.5
130,000.5
64,000.5
32,000.5
16,000.5
8,000.5
4,000.5
2,000.5
1,000.5
500.5
130.5
32.5
8.5
4.5
2.5
1.5
0.5
2827262524232221201918
17 1716
15 1514
13 131211109876543210
> 4 µm
> 6 µm
> 14 µm
Example:
Larger than 4 µm = 125,000
Larger than 6 µm = 29,490
Larger than 14 µm = 4,250250
64
16
Quantifying solid particle contamination
ISo code = 17 / 15 / 13
23 | 21 | 18 18 | 15 | 13 15 | 13 | 8
RMF ISo cleanliness levels
NAS 1638Contamination level according to NAS 1638: the contamination classes are defined by a number (from 00-12) which indicates the maximum
number of particles per 100 ml, counted on a differential basis in a given size bracket. Most industrial users quote a single code which is the
highest recorded in all sizes, e.g. NAS 6.
NAS classes
00 0 1 2 3 4 5 6 7 8 9 10 11 12
5-15 125 250 500 1000 2000 4000 8000 16000 32000 64000 128000 256000 512000 1024000
15-25 22 44 89 178 356 712 1425 2850 5700 11400 22800 45600 91200 182400
25-50 4 8 16 32 63 126 253 506 1012 2025 4050 8100 16200 32400
50-100 1 2 3 6 11 22 45 90 1801 360 720 1410 2880 5760
over 100 0 0 1 1 2 4 8 16 32 64 128 256 512 1024
Structure of ISo 4406 code:
Cleanliness levels are defined by three numbers divided by slashes (/). These numbers correspond to 4, 6 and 14 micron, in that order. Each number refers to an ISO Range Code which is determined by the number of particles for that size (4, 6, 14 micron) and larger present in 100 ml of fluid. Each range is double the range below. Refer to the chart to see the actual ranges.
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To achieve the correct cleanliness level
A combination of f ilters must be used to achieve the correct cleanliness level in a hydraulic or lubrication system.
RMF Systems of fers a comprehensive range of Of f- line f ilters, By -pass f ilters and Air conditioners (desiccant breathers) to achieve and maintain
extremely low contamination levels in hydraulic and/or lubrication systems (water and solid par ticles).
RMF ISo cleanliness levels
Setting the cleanliness level required by a systemStarting at the left hand column, select the most dirt sensitive component used in the system.1.
Move to the right to the column that describes the system pressure and conditions.2.
Here you will find the recommended ISO class level.3.
Low/Medium pressure under 140 Bar
Moderate conditions
High pressure 140-210 Bar Severe conditions
Very high pressure 210 Bar and higher. High pressure
and severe conditions
Pumps
Fixed gear/Fixed vane 20/18/15 19/17/14 18/16/13
Fixed piston 19/17/14 18/16/13 17/15/12
Variable vane 18/16/13 17/15/12 Not applicable
Variable piston 18/16/13 17/15/12 16/14/11
Valves
Check valves 20/18/15 20/18/15 19/17/14
Directional valves 20/18/15 19/17/14 18/16/13
Standard flow valves 20/18/15 19/17/14 18/16/13
Cartridge valves 19/17/14 18/16/13 17/15/12
Proportional valves 17/15/12 17/15/12 16/14/11
Servo valves 16/14/11 16/14/11 15/13/10
Actuators
Cylinders, Vane motors, Gear motors 20/18/15 19/17/14 18/16/13
Piston motors, Swash plate, Gear motors 19/17/14 18/16/13 17/15/12
Hydrostatic drives 16/15/12 16/14/11 15/13/10
Test stands 15/13/10 15/13/10 15/13/10
Bearings
Journal bearings 17/15/12 Not applicable Not applicable
Industrial gear boxes 17/15/12 Not applicable Not applicable
Ball bearings 15/13/10 Not applicable Not applicable
Roller bearings 16/14/10 Not applicable Not applicable
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Air conditionerscondensation in reservoirs
Hydraulic and lubricating oils must be kept free from contamination and water.
Most fluid reservoirs must be able to breathe, thus allowing water vapour and
solid contaminants to enter. Temperature fluctuations in the reservoir will
cause this water vapour to condense which will not only cause oxidation of the
oil, but can also lead to considerable mechanical damage.
Filtration and drying: a single process
Standard air breathers remove some of the solid particles but allow water
vapour in the air to pass freely. The RMF ’Air conditioner’ deals effectively with
both so reservoirs can breath clean, dry air. The air is first dried by passage
through a column packed with Z-R gel granules. The dried air is then passed
through a pleated synthetic fibre filter element (replaceable spin-on type)
where solid particles are removed, so that the air reaching the reservoir is
both clean and dry.
Monitoring
The uptake of moisture can be observed by the change in colour of the
indicator granules in the Z-R gel. They turn from ruby-red (active) to light orange
(replace). The Z-R gel granules are completely replaceable, non toxic and non
carcinogenic. An optional contamination indicator shows when the air filter is
in need of replacement.
Active coal
RMF ’Air conditioners’ can be fitted with a combination of Z-R gel and active
coal, the active coal will eliminate oil vapour and the smell, it will also prevent
the Z-R gel from being contaminated with this oil damp.
Atmospherically closed
The RMF range also offers some ’Air conditioners’
for gearbox applications which have spring
loaded (0.01 bar) check valves fitted in the
base in opposing directions, opening only
whilst inhaling or exhaling. This way there is
no atmospheric contact with the air and the
Z-R gel under static conditions increasing the
lifetime of the drying agent.
Benefits RMF ’Air conditioner’
• Reducing water contamination level prolongs
the life of the additive package and reduces
oxidation of the oil and bearing surfaces.
• Eliminates rusting due to condensation.
• Reduces machine downtime.
• Extends the machine’s useful life.
• Reduces cost of ownership.
Applications
RMF ’Air conditioners’ can be used on hydraulic
power units, lube and oil tanks, gearboxes, diesel
fuel tanks and storage tanks for biodegradable
fluids. Industries that are successfully applying
’Air conditioners’ include: steel industry, aviation
industry, forestry industry, pulp & paper industry,
cement industry, petrochemical industry and
mining industry.
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13
Kl..R
SW
Z-R gel
DiRty/moiSt aiR
DRy aiR
Acl..R
Z-R gel
tRanSpaRant
houSing
DiRty/moiSt aiRClean/DRy aiR
DRy aiR
lIGHT VERSIoN SERIES Acl..R/AcM..R Type ACL93R ACL96R ACM61R
Total weight 0.9 kg 1.1 kg 0.4 kg
Z-R gel volume 300 cc 600 cc 100 cc
Water absorbtion 86 gram 172 gram 29 gram
Max. air flow 700 l/min 50 l/min
Absorbtion material Z-R gel 3-6 mm
Z-R gel Non toxic
Dimensions
Type ACL93R ACL96R ACM61R
L1 150 mm 210 mm 135 mm
D Ø 96 mm Ø 68 mm
G ¾” BSP female BSP female
HEAVY DuTY SERIES Kl...RType KL93R KL96R KL121R KL122R
Total weight 1.2 kg 1.5 kg 2.7 kg 4.0 kg
Z-R gel volume 300 cc 600 cc 1,000 cc 2,000 cc
Water absorbtion 86 gram 172 gram 288 gram 576 gram
Max. air flow 700 l/min 1,500 l/min
Absorbtion material Z-R gel 3-6 mm
Z-R gel Non toxic
Dimensions
Type KL93R KL96R KL121R KL122R
L1 145 mm 210 mm 250 mm 360 mm
L2 20 mm 30 mm
D Ø 96 mm Ø 128 mm
G ¾” BSP male 1 ¼” BSP male
SW 32 mm 50 mm
Clean/DRy aiR
Clean/DRy aiR
g
DRy aiR
tRanSpaRant houSing
tRanSpaRant houSing
CheCk valveCheCk valve
Z-R gel
DiRty/moiSt aiR
inhale
aiR exhauSt
AcM..R
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Table 1 Table 2 Table 3 Table 4
ordering codes:RMF ’Air conditioners’
Filtertype:desiccant breathers
Table 1 Type of body Tank connection Air filter
KL Heavy duty versionMale threading
on stainless steel tube3µ fibre glass spin-on
ACL Light version (only in 93 and 96 series)
Female threading in plastic housing
3µ fibre glass spin-on
ACM Mini light version (only in 60 series)
Female ” threading in plastic housing with two integrated check valves
3µ fibre glass spin-on
Table 2 Conf. Diameter (mm) Height (mm) Connection Weight total (kg) Max. air flow (l/min)61 ACM 68 135 ” BSP (Female) 0.4 50
93ACL 96 150 ¾” BSP (Female) 0.9 700
KL 96 175 ¾” BSP (Male) 1.2 700
96ACL 96 210 ¾” BSP (Female) 1.1 700
KL 96 240 ¾” BSP (Male) 1.5 700
121 KL 128 290 1 ¼” BSP (Male) 2.7 1,500
122 KL 128 400 1 ¼” BSP (Male) 4.0 1,500
Table 3 Type Drying agent Desiccant volume (cc) Nominal water absorbing capacity (gram)
R
61
ZR - Gel
100 29
93 300 86
96 600 172
121 1,000 288
122 2,000 576
RC
93Approx.
Z-R Gel Active Coal(not available for ACM61R)
200 / 100 57
96 400 / 200 115
121 700 / 300 201
122 1,400 / 600 403
2 3 1 3
Table 4 Type OptionsV 121 Integrated check valves (0.01 bar) Only available for KL121 series
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ORDERING CODESpare parts Type
Description ACM61R series ACL93 and KL93 series
ACL96 and KL96 series KL121 series KL122 series
Air filter only KL60 (incl. seal) KL90 (incl. seal) KL120 (incl. seal)
Z-R gel refill in air tight container
ACM61 series Refill Z-R gel 80 cc
KL/ACL 93 series Refill Z-R gel 300 cc
KL/ACL 96 series Refill Z-R gel 600 cc
KL 121 series Refill Z-R gel 1000 cc
KL 121 series Refill Z-R gel 2000 cc
Active coal refill in air tight container* N.A.
KL/ACL 93 series Refill active coal
300 cc
KL/ACL 96 series Refill active coal
300 cc
KL 121 series Refill active coal 300 cc
KL 122 series Refill active coal 600 cc
Spare kit including Z-R gel, air filter, seal and foam pads
N.A.Spare kit KL93R/
ACL93RSpare kit KL96R/
ACL96RSpare kit KL121R Spare kit KL122R
* Please note that smallest Active coal refill available is 300 cc container. To be used for 93, 96 and 121 series.
ORDERING CODEAccessories Type
Description ACM61R series ACL93 and KL93 series
ACL96 and KL96 series KL121 series KL122 series
Filter minder (indicator + electr. contact and nipple) N.A. 9331303
Filter minder connector (w/o cable) for use with 9331303 N.A. 9331320
Mounting plate N.A. KL92 KL1202
Mounting plate + filter minder port N.A. KL95 KL1205
Mounting plate + filter minder port + return port N.A. KL91 KL1201
Mounting plate + filter minder port + suction and return port N.A. KL91SR N.A.
KL 92 / 1202 Mouting Plate
KL 95 / 1205 Mouting Plate + Filter minder Port
KL 91 / 1201 Mouting Plate + Filter minder Port + Return Port
KL 91 SR Mouting Plate + Filter minder Port + Return Port + Suction Port
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By-pass filtersRMF systems
RMF Systems radial micro filter units are characterized by their extremely
efficient filter elements with a fineness of 0.5 micron. If required, different
micron sizes are available to suit any specific application.
The By-pass filters can also be equipped with an additional special water
absorbing prefilter. In case of extreme water contamination, these water
absorbing spin-on cans will remove most of the water prior to the fluid reaching
the cellulose element.
RMF By-pass filters are specially designed for mobile hydraulic installations
and are available in single or double units which are equally suitable for OEM
use and retro-fitting. The By-pass filter comes equipped with an integrated
pressure compensated flow control valve. This valve bleeds oil from the main
hydraulic system, passes this through the filter after which it is returned to
the hydraulic reservoir. The amount of oil extracted from the main system at
any time is insignificant ensuring that it will not affect the working of the main
system. Most commonly used biodegradable oils in the mobile sector are
suitable for filtration with RMF filter elements.
Economical
The hydraulic market accepts that 80% of mechanical failures are caused
by contamination in the system. The RMF By-pass filters attack this
contamination at source and in addition to solid particles, these filters are
also capable of removing water from the oil. This prevents the catalytic
reaction of water and solid particle contamination, resulting in extended
useable oil life.
The use of RMF filters means less defects, less maintenance, and less wear
and tear of the hydraulic components.
Applications
RMF By-pass filter units can be fitted to every
imaginable mobile application where hydraulic
and/or transmission systems are present.
Installation is very simple, the filter housing
provides mounting slots on all four sides and the
pressure and return connections are available
on the side and the back of the By-Pass unit.
In recent years RMF Systems have developed a
great deal of experience in cleaning and keeping
clean hydraulic and transmission systems on:
excavators, wheel loaders, forestry machines,
asphalt machines, concrete pumps, aviation
ground support equipment and agricultural
machines.
Advantages
• Extremely clean oil due to high filtration effi
ciency.
• Prevention of channel forming by radial filtration
direction.
• Large dirt and water holding capacity.
• Compact and easymaintenance design.
• Environmentally friendly elements available.
• Longer usage life for oil and components.
• Reduces cost of ownership.
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TECHNICAL DATA BY-PASS UNITS
Filter model BPU05A20… BPU1A30… BPU2A30…. BPU1B30….
No. of filter housings 1 1 2 1
Material filter housing Anodised aluminium
Seal material Buna-N standard
Nominal flow 1.4 l/min 2.1 l/min 4.2 l/min 4.2 l/min
By-pass opening pressure 6.2 bar (at 0 bar back pressure)
No. of filter elements 1 1 2 2
Length filter elements 200 mm 300 mm (standard)
Operating pressure flow control valve (min. - max.)
12 - 420 bar
Max. pressure filter housing 20 bar
Max. oil temperature 80 °C
Dirt indicator Pressure gauge (0-10 bar, green/yellow/red zones)
Connection pressure port ¼” BSP female
Diameter hose pressure side ”
Connection return port ½” BSP female
Diameter hose return side ” (½” if you have to use long hoses)
Max. tank volume approx. 300 l approx. 750 l approx. 1,500 l approx. 1,500 l
Dimensions h x w x d (mm) 300 x 131 x 160 400 x 131 x 160 400 x 280 x 160 710 x 131 x 160
Minimum overhead clearance for element removal
300 mm 400 mm 400 mm 700 mm
Sample port connections: P1 filter inlet side (red) P2 filter inlet side (yellow)
Test connector M16x2Test connector M16x2
Approximate weight 5.0 kg 6.0 kg 13.0 kg 10.0 kg
Weight (optional) bracket 0.5 kg 0.5 kg Incl. Incl.
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Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8
BPU
Table 1 Basic configurationBPU By-pass unit Mobile applications
Table 2 Housing configuration Typical reservoir size Number of elements05A Single housing (short version) Suitable for 500 l reservoir 1 pcs element (200 mm)
1A Single housing (single length) Suitable for 750 l reservoir 1 pcs element (300 mm)
2A Twin housing (single length) Suitable for 1,500 l reservoir 2 pcs element (300 mm)
1B Single housing (double length) Suitable for 1,500 l reservoir 2 pcs element (300 mm)
Table 3 Length element20 L = 200 mm
30 L = 300 mm Standard
Table 5 Seal materialB Buna-N Standard
V Viton Optional
Table 4 Filter material
H Cellulose 0.5 micron, sillicon bottom seal
N Cellulose 0.5 micron, NO sillicon bottom seal
G1* Glass fibre, 1 micron, β1 ≥ 200
G3* Glass fibre, 3 micron, β3 ≥ 200
A5 Glass fibre with polymer, 5 micron β5 ≥ 200
* G1 and G3 also suitable for water glycol
ordering codes:RMF By-Pass units
Filtertype:BPU units
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Table 6 Indicator0 Pressure gauge Standard
1 Additional electr. indicator Optional
2 No pressure gauge mounted
Table 7 Options0 No options
1 Without flow control valve
2 Needle valve - NO flow control valve
5 Non standard flow / 2.1 l/min
7 Non standard flow / 1.4 l/min
8 Non standard flow / 4.2 l/min
Table 8 Bracket options0 No options
1 With standard foot / bulk head mounting bracket
2 With ’bulk head mounting only’ bracket (only for single length / single housing available)
3 With standard ’OLU’ wall mounting bracket (single length = 1 bracket, double length = 2 brackets)
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Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9
BPUW
Table 1 Basic configuration
BPUW By-pass unit + water sorb pre-filter Mobile applications
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 6 Indicator
0 Standard pressure gauge
1 Additional electr. indicator (5.5 bar rising)Table 4 Filter material
H Cellulose 0.5 micron, sillicon bottom seal
N Cellulose 0.5 micron, NO sillicon bottom seal
G1* Glass fibre, 1 micron, β1 ≥ 200
G3* Glass fibre, 3 micron, β3 ≥ 200
A5 Glass fibre with polymer, 5 micron β5 ≥ 200
* G1 and G3 also suitable for water glycol
Table 3 Length element
30 L = 300 mm Standard
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 750 l reservoir 1 pcs element (300 mm)
2A Twin housing (single length) Suitable for 1,500 l reservoir 2 pcs element (300 mm)
1B Single housing double length) Suitable for 1,500 l reservoir 2 pcs element (300 mm)
Table 7 Options
0 No options
5 Non standard flow / 2.1 l/min
7 Non standard flow / 1.4 l/min
8 Non standard flow / 4.2 l/min
Table 9 Water absorbtion element H2O capacity
A Single H2O-sorb element, left mount 540 ml
B Single H2O-sorb element, right mount 540 ml
Table 8 Bracket options
0 No options
1 With standard foot / bulk head mounting bracket
2 With ’bulk head mounting only’ bracket
3 With standard ’OLU’ wall mounting bracket
ordering codes:RMF By-pass units with H
2o sorb
Filtertype:BPUW units
www.RMFFIlTER.coM
21
TECHNICAL DATA BY-PASS UNITS WITH WATERSORB
Filter model BPUW1A30… BPUW2A30…. BPUW1B30….
No. of filter housings 1 2 1
Material filter housing Anodised aluminium
Seal material Buna-N standard
Nominal flow 2.1 l/min 4.2 l/min 4.2 l/min
By-pass opening pressure 6.2 bar (at 0 bar back pressure)
No. of filter elements 1 2 2
Length filter elements 300 mm (standard)
Operating pressure flow control valve (min. - max.)
12 - 420 bar
Max. pressure filter housing 20 bar
Max. oil temperature 80 °C
Dirt indicator Pressure gauge (0-10 bar, green / yellow / red zones)
Connection pressure port ¼” BSP female
Diameter hose pressure side ”
Connection return port ½” BSP female
Diameter hose return side ” (½” if you have to use long hoses)
Max. tank volume Approx. 750 l Approx. 1,500 l Approx. 1,500 l
Dimensions h x w x d (mm) 400 x 385 x 160 400 x 340 x 320 710 x 385 x 160
Minimum overhead clearance for element removal
400 mm 400 mm 700 mm
Sample port connections: P1 filter inlet side (red) P2 filter inlet side (yellow)
Test connector M16x2Test connector M16x2
Approximate weight 10.0 kg 17.0 kg 14.0 kg
Weight (optional) bracket Incl. Incl. Incl.
off-line filtersRMF Systems radial micro filter units are characterized by their extremely
efficient filter elements with a fineness of 0.5 micron. If required different
micron sizes are available to suit any specific application.
The Off-line filters can also be equipped with special water absorbing pre-
filters in case of extreme water contamination. These water absorbing spin-on
cans will remove most of the water prior to the fluid reaching the cellulose
element.
Specially designed for industrial hydraulic installations the RMF Off-line filters
are available in single or multiple housing configurations. The Off-line filter
units can be easily mounted to new and existing hydraulic installations.
By means of an integrated pump-motor unit in the Off-line filter, the oil is
pumped from the reservoir through the filter unit. After filtering the oil is
returned to tank. Off-line filters can continue to work even when the main
system is not in use. Element change can also be done without interfering with
the main system.
Economical
The hydraulic market accepts that 80% of mechanical failures are caused by
contamination in the system.
The RMF Off-line filters attack this contamination at source and in addition to
solid particles. These filters are also capable of removing water from the oil.
This prevents the catalytic reaction of water and solid particle contamination,
resulting in extended useable oil life.
The use of RMF filters means less defects, less maintenance, and less wear
and tear of the hydraulic components.
Applications
RMF Off-line filter units can be fitted to every
imaginable industrial application where hydraulic
and/or lubrication systems are present.
The standard range of Off-line filters can be
utilized in reservoirs with a maximum volume
of 11,000 litres. A large selection in electrical
motors is available, ranging from single phase,
three phase to explosion proof.
In recent years RMF Systems have developed a
great deal of experience in cleaning and keeping
clean hydraulic and lubrication systems in the:
- steel industry;
- plastic moulding industry;
- maritime industry;
- petro chemical industry;
- paper industry.
Advantages
• Extremely clean oil due to high filtration effi-
ciency.
• Prevention of channel forming by radial filtration
direction.
• Increased flow capacity.
• Large dirt holding capacity.
• Large water holding capacity.
• Compact and easymaintenance design.
• Environmentally friendly elements available.
• Longer usage life for oil and components.
• Reduces cost of ownership.
22
www.RMFFIlTER.coM
23
TECHNICAL DATA OFF-LINE UNITS
Filter model OLU1A30… OLU2A30… OLU1B30… OLU2B30… OLU4A30… OLU4B30…
No. of filter housings 1 2 1 2 4 4
Material filter housing Anodised aluminium
Seal material filter unit Buna-N standard
Nominal flow 2.1 l/min 4.2 l/min 4.2 l/min 8.4 l/min 8.4 l/min 16.8 l/min
By-pass opening pressure 6.2 bar (at 0 bar back pressure)
No. of filter elements 1 2 2 4 4 8
Length filter elements 300 mm (standard)
Max. pressure filter housing 20 bar
Max. oil temperature 80 °C
Dirt indicator Pressure gauge (0-10 bar, green / yellow / red zones)
Gauge glycerine filles
Connection pump suction port ” BSP female ½” BSP female ¾” BSP female
Diameter hose suction side ½” ¾”
Connection return port ½” BSP female EW 18L - ¾”
Diameter hose return side ½” ¾” or 1” (with long hoses)
Dimensions h x w x d (mm) 420 x 335 x 190 420 x 340 x 325 730 x 335 x 190 730 x 340 x 325 530 x 340 x 500 830 x 350 x 500
Minimum overhead clearance for element removal
400 mm 400 mm 700 mm 700 mm 400 mm 700 mm
Pump type Hydraulic gear pump
Power supply E-motor Various electrical power supplies possible
Max. tank volume ± 1,350 l ± 2,700 l ± 2,700 l ± 5,400 l ± 5,400 l ± 10,800 l
Sample port connections: P1 filter inlet side (red) P2 filter inlet side (yellow)
Test connector M16x2Test connector M16x2
Approximate weight 14.0 kg 21.0 kg 18.0 kg 30.0 kg 39.0 kg 61.0 kg
24
ordering codes:RMF off-line units
Filtertype:OLU units
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9
OLU
Table 1 Basic configuration
OLU Off-line unit Industrial applications
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 1,350 l reservoir 1 pcs element (300 mm)
2A Twin housing (single length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
4A Quadruple housing (single length) Suitable for 5,400 l reservoir 4 pcs element (300 mm)
1B Single housing (double length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
2B Twin housing (double length) Suitable for 5,400 l reservoir 4 pcs element (300 mm)
4B Quadruple housing (double length) Suitable for 10,800 l reservoir 8 pcs element (300 mm)
Table 4 Filter material
H Cellulose 0.5 micron, silicon bottom seal
N Cellulose 0.5 micron, NO silicon bottom seal
G1* Glass fibre, 1 micron, β1 ≥ 200
G3* Glass fibre, 3 micron, β3 ≥ 200
A5 Glass fibre with polymer, 5 micron, β5 ≥ 200
* G1 and G3 also suitable for Water Glycol
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 3 Length element
30 L = 300 mm Standard
Table 6 E-motor options
0 Standard: 230/400 VAC 50 Hz / 3 phase, 255/460 VAC 60 Hz / 3 phase
A 230 VAC 50 Hz / 1 phase
B 24 VDC
C 110 VAC 50 Hz / 1 phase
D 110 VAC 60 Hz / 1 phase
E 230/400 VAC 50 Hz, IP65 / 3 phase
F 230 VAC 60 Hz / 1 phase
H 690 VAC 50 Hz / 3 phase
N 500 VAC 50 Hz / 3 phase
M 575 VAC 60 Hz / 3 phase
S Special motor, on request
X Explosion proof, on request
www.RMFFIlTER.coM
25
Table 7 Pump options
Code Standard for 50 Hz motor Standard for
00 1.6 cc/rev. group 1 OLU1A
10 3.15 cc/rev. group 1 OLU2A / OLU1B
20 6.1 cc/rev. group 1 OLU4A / OLU2B
30 8.2 cc/rev. group 2
40 11.3 cc/rev. group 2 OLU4B
50 0.8 cc/rev. group 1 obsolete
60 1.0 cc/rev. group 1
Code Standard for 60 Hz motor Standard for
01 1.25 cc/rev. group 1 OLU1A
11 2.5 cc/rev. group 1 OLU2A / OLU1B
21 5.0 cc/rev. group 1 OLU4A / OLU2B
31 6.3 cc/rev. group 2
41 10.0 cc/rev. group 2 OLU4B
Table 8 Indicator
0 Pressure gauge Standard
1 Additional electr. indicator
Optional
2 Additional Δp indicator
Optional
Table 9 Extra options
0 No options
1 Motor / pump right side mount
2 Motor / pump left side mount
3 Motor / pump front side mount
4 Incl. on/off and motor protection relais
5 Incl. on/off and motor protection relais / External By-pass
S Stainless steel fittings
water absorbing off-line filtersRMF Systems radial micro filter units are characterized by their extremely
efficient filter elements with a fineness of 0.5 micron. If required different
micron sizes are available to suit any specific application.
The Off-line filters can also be equipped with special water absorbing pre-filters
in case of extreme water contamination. These water absorbing spin-on cans
will remove most of the water prior to the fluid reaching the cellulose element.
Specially designed for industrial hydraulic installations the RMF Off-line filters
are available in single or multiple housing configurations. The Off-line filter
units can be easily mounted to new and existing hydraulic installations.
By means of an integrated pump-motor unit in the Off-line filter, the oil is
pumped from the reservoir through the filter unit. After filtering the oil is returned
to tank.
Economical
The hydraulic market accepts that 80% of mechanical failures are caused by
contamination in the system. The RMF Water absorbing Off-line filters attack
this contamination at source and in addition to solid particles, these filters are
also capable of removing water from the oil. This prevents the catalytic reaction
of water and solid particle contamination, resulting in extended useable oil life.
The use of RMF filters means less defects, less maintenance, and less wear
and tear of the hydraulic components.
water absorbing
RMF Water absorbing filters are Off-line filters that use a special water
absorbing spin-on as a pre-filter. The fluid is pumped through the pre-filter
which removes most water and larger solid contamination. In the second
stage the fluid passes through the RMF cellulose micro filter where final water
removal takes place as well as solid particle removal.
Applications
RMF Water absorbing Off-line filter units can be
fitted to every imaginable industrial application
where hydraulic and/or lubrication systems are
present.
The standard range of Off-line filters can be
utilized in reservoirs with a maximum volume
of 11,000 litres. A large selection in electrical
motors is available ranging from single phase,
three phase to explosion proof.
In recent years RMF Systems have developed a
great deal of experience in cleaning and keeping
clean hydraulic and lubrication systems in the
steel industry, plastic moulding industry, maritime
industry, petro chemical industry and paper
industry.
Advantages
• Extremely clean oil due to high filtration effi-
ciency.
• Prevention of channel forming by radial filtration
direction.
• Increased flow capacity.
• Large dirt holding capacity.
• Large water holding capacity.
• Compact and easymaintenance design.
• Environmentally friendly elements available.
• Longer usage life for oil and components.
• Reduces cost of ownership.
26
www.RMFFIlTER.coM
TECHNICAL DATA OFF-LINE UNITS WITH WATERSORB
Filter model OLUW1A30… OLUW2A30… OLUW1B30… OLUW2B30… OLUW4A30… OLUW4B30…
No. of filter housings 1 2 1 2 4 4
Material filter housing Anodised aluminium
Seal material filter unit Buna-N standard
Nominal flow 2.1 l/min 4.2 l/min 4.2 l/min 8.4 l/min 8.4 l/min 16.8 l/min
By-pass opening pressure 6.2 bar (at 0 bar back pressure)
No. of filter elements 1 2 2 4 4 8
Length filter elements 300 mm (standard)
No. of watersorb elements 1 1 1 1 or 2 1 or 2 1 or 2
Total water absorbing capacity 690 ml 840 ml 840 ml 840 or 1,380 ml 840 or 1,380 ml 1,740 or 2,280 ml
Max. pressure filter housing 20 bar
Max. oil temperature 80 °C
Dirt indicator Pressure gauge (0-10 bar, green/yellow/red zones)
Connection pump suction port ½” BSP female ¾” BSP female
Diameter hose suction side ½” ¾”
Connection return port ½” BSP female EW 18L - ¾”
Diameter hose return side ½” ¾” or 1” (with long hoses)
Dimensions h x w x d (mm) 400 x 380 x 325 400 x 530 x 325 710 x 380 x 325 710 x 530 x 325 560 x 335 x 494 820 x 350 x 505
Minimum overhead clearance for element removal
400 mm 400 mm 700 mm 700 mm 400 mm 700 mm
Pump type Hydraulic gear pump
Power supply E-motor Various electrical power supplies possible
Max. tank volume ± 1,350 l ± 2,700 l ± 2,700 l ± 5,400 l ± 5,400 l ± 10,800 l
Sample port connections: P1 filter inlet side (red) P2 filter inlet side (yellow)
Test connector M16x2 Test connector M16x2
Approximate weight 18.0 kg 25.0 kg 22.0 kg 34.0 kg 43.0 kg 65.0 kg
27
28
ordering codes:water absorbing off-line units
Filtertype:OLUW units
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10
OLUW
Table 1 Basic configuration
OLUW Off-line unit + water absorbing pre-filter Industrial applications
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 1,350 l reservoir 1 pcs element (300 mm)
2A Twin housing (single length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
4A Quadruple housing (single length) Suitable for 5,400 l reservoir 4 pcs element (300 mm)
1B Single housing (double length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
2B Twin housing (double length) Suitable for 5,400 l reservoir 4 pcs element (300 mm)
4B Quadruple housing (double length) Suitable for 10,800 l reservoir 8 pcs element (300 mm)
Table 3 Length element
30 L = 300 mm Standard
Table 4 Filter material
H Cellulose 0.5 micron, silicon bottom seal
N Cellulose 0.5 micron, NO silicon bottom seal
G1* Glass fibre, 1 micron, β1 ≥ 200
G3* Glass fibre, 3 micron, β3 ≥ 200
A5 Glass fibre with polymer, 5 micron, β5 ≥ 200
* G1 and G3 also suitable for Water Glycol
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 6 E-motor options
0 Standard: 230/400 VAC 50 Hz / 3 phase, 255/460 VAC 60 Hz / 3 phase
A 230 VAC 50 Hz / 1 phase
B 24 VDC
C 110 VAC 50 Hz / 1 phase
D 110 VAC 60 Hz / 1 phase
E 230/400 VAC 50 Hz, IP65 / 3 phase
F 230 VAC 60 Hz / 1 phase
H 690 VAC 50 Hz / 3 phase
N 500 VAC 50 Hz / 3 phase
M 575 VAC 60 Hz / 3 phase
S Special motor, on request
X Explosion proof, on request
www.RMFFIlTER.coM
29
Table 7 Pump options
Code Standard for 50 Hz motor Standard for
00 1.6 cc/rev. group 1 OLU1A
10 3.15 cc/rev. group 1 OLU2A / OLU1B
20 6.1 cc/rev. group 1 OLU4A / OLU2B
30 8.2 cc/rev. group 2
40 11.3 cc/rev. group 2 OLU4B
50 0.8 cc/rev. group 1 obsolete
60 1.0 cc/rev. group 1
Standard for 60 Hz motor
01 1.25 cc/rev. group 1 OLU1A
11 2.5 cc/rev. group 1 OLU2A / OLU1B
21 5.0 cc/rev. group 1 OLU4A / OLU2B
31 6.3 cc/rev. group 2
41 10.0 cc/rev. group 2 OLU4B
Table 8 Indicator
0 Pressure gauge Standard
1 Additional electr. indicator
Optional
2 Additional Δp indicator
Optional
Table 9 Extra options
0 No options
1 Motor/pump right side mount
Table 10 Water absorbtion element
A Single H2O-sorb element Capacity = 540 ml Standard mounting single filter head
B Single H2O-sorb element Capacity = 540 ml Alternative mounting single filter head
C Dual H2O-sorb element Capacity = 2 x 540 ml Standard mounting double filter head
Heated off-line filtersRMF Systems radial micro filter units are characterised by their extremely
efficient filter elements with a fineness of 0.5 micron. The Off-line filter units
with pre-heating are developed specially for cold hydraulic and lubricating
systems.
The electric pre-heating ensures that the cold and/or high viscosity fluid is
brought to a temperature with a suitable filtration viscosity. Off-line filters with
pre-heating can be applied to new or existing installations.
The integrated pump-motor combination draws fluid from the reservoir, pumps
it through a heating element, filters it and returns it to the tank. The heating
is thermostat controlled and adjustable to any required fluid temperature. The
heating is effected by a 'flow-through' principle, preventing 'burning' or thermal
overloading of the oil. The Heated Off-line filters can continue to work even
when the main system is not in use. Element change can also be done without
interfering the main system.
Economical
The hydraulic market accepts that 80% of the mechanical failures are
caused by contamination in the system. The RMF Off-line filters attack this
contamination at source. In addition to solid particles, these filters are also
capable of removing water from the oil.
This prevents the catalytic reaction of water and solid particle contamination,
resulting in an extended usable oil life. The use of RMF-filters means reduced
down time, increased component life and extended service intervals with
reduced oil changes.
Applications
RMF Off-line filter units with pre-heating can be
applied to any industrial application where it
is necessary to heat the oil and maintain it at
a particular temperature, such as hydraulically
operated bridges and gear boxes in the wind
power energy industry.
Advantages
• Extremely clean oil due to the high filtration
efficiency β 0.5 ≥ 200, β 2 ≥ 2,330.
• Prevention of channel forming by radial
filtration direction.
• Increased dirt holding capacity.
• Large water holding capacity.
• Compact and easymaintenance design.
• Environmentally friendly elements.
• Longer usable life for oil and components.
30
www.RMFFIlTER.coM
31
TECHNICAL DATA HEATED OFF-LINE FILTERS
Filter model OLUH1A30… OLUH1B30… OLUH1B30…
No. of filter housings 1 1 1
Material filter housing Anodised aluminium
Seal material filter unit Buna-N standard
Seal material heater unit Viton standard
Max. flow capacity to achieveenough delta T in single pass
Approx. 2.9 l/min with 2 kW heater
By-pass opening pressure 6.2 bar (at 0 bar back pressure)
No. of filter elements 1 2
Length filter elements 300 mm (standard)
Max. pressure filter housing 20 bar
Heater capacity 2 kW 2 kW 4 kW
Max. pressure filter housing 20 bar
Max. oil temperature 80 °C
Dirt indicator Pressure gauge (0-10 bar, green/yellow/red zones)
Connection pump suction port ” BSP female
Diameter hose suction side ½” or ¾” with positive head preferably
Connection return port ½”
Diameter hose return side ½”
Dimensions h x w x d (mm) 570 x 485 x 190 730 x 485 x 190 825 x 485 x 190
Pump type Hydraulic gear pump
Power supply E-motor Various electrical power supplies possible
Max. tank volume ± 1,350 l ± 2,700 l ± 2,700 l
Sample port connections: P1 filter inlet side (red) P2 filter inlet side (yellow)
Test connector M16x2Test connector M16x2
Approximate weight 24.0 kg 28.0 kg 30.0 kg
Consult RMF for 4 kW heaters and flows exceeding 2.9 l/min
32
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10
OLUH
ordering codes:RMF Heated off-line filters
Filtertype:OLUH units
Table 1 Basic configuration
OLUH Off-line heated unit Industrial applications
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 1,350 l reservoir 1 pcs element (300 mm)
2A Twin housing (single length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
1B Single housing (double length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
Table 3 Length element
30 L = 300 mm Standard
Table 4 Filter material
H Cellulose 0.5 micron, silicon bottom seal
N Cellulose 0.5 micron, NO silicon bottom seal
G1* Glass fibre, 1 micron, β1 ≥ 200
G3* Glass fibre, 3 micron, β3 ≥ 200
A5 Glass fibre with polymer, 5 micron, β5 ≥ 200
* G1 and G3 also suitable for Water Glycol
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 6 E-motor options
0 Standard: 230/400 VAC 50 Hz / 3 phase, 255/460 VAC 60 Hz / 3 phase
A 230 VAC 50 Hz / 1 phase
E 230/400 VAC 50 Hz, IP65 / 3 phase
F 230 VAC 60 Hz / 1 phase
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33
Table 7 Pump options Standard for
Code Standard for 50 Hz motor
00 1.6 cc/rev. group 1 OLU1A
10 3.15 cc/rev. group 1 OLU2A / OLU1B
60 1.0 cc/rev. group 1
Standard for 60 Hz motor
01 1.25 cc/rev. group 1 OLU1A
11 2.5 cc/rev. group 1 OLU2A / OLU1B
Table 8 Indicator
0 Pressure gauge Standard
1 Additional electr. indicator
Optional
2 Additional Δp indicator
Optional
Table 9 Extra options
0 No options
2 Motor/pump/heater left side mount
4 Incl. on/off and motor protection
5 Incl. on/off and motor protection / External By-pass
Table 10 Heater options Standard for
0 2,000 W / L = 300 mm/ voltage equal to e-motor
OLU1A / OLU2A
1 4,000 W / L = 600 mm/ voltage equal to e-motor
OLU1B
2 2 pcs. 2,000 W / L = 300 mm/ voltage equal to e-motor
Special
3 2 pcs. 4,000 W / L = 600 mm/ voltage equal to e-motor
Special
Air driven off-line filtersRMF Systems radial micro filter units are characterised by their extremely
efficient filter elements with a fineness of 0.5 micron. If required, different
micron sizes are available to suit any specific application.
The Air driven Off-line filters can also be equipped with special water absorbing
pre-filters in case of extreme water contamination. These water absorbing
spin-on cans will remove most of the water prior to the fluid reaching the
cellulose element.
Specially designed for industrial hydraulic installations the Air driven RMF
Off-line filters are available in single or multiple housing configurations.
The Off-line filter units can be easily mounted to new and existing hydraulic
installations.
By means of an integrated air driven motor-pump unit in the Off-line filter, the
oil is pumped from the reservoir through the filter unit. After filtering the oil
is returned to tank. The Air driven Off-line filters can continue to work even
when the main system is not in use. Element change can also be done without
interfering with the main system.
Economical
The hydraulic market accepts that 80% of mechanical failures are caused by
contamination in the system.
The RMF Off-line filters attack this contamination at source and in addition to
solid particles. These filters are also capable of removing water from the oil.
This prevents the catalytic reaction of water and solid particle contamination,
resulting in extended useable oil life.
The use of RMF filters means less defects, less maintenance, and less wear
and tear of the hydraulic components.
Applications
The Air driven RMF Off-line filter units can be
fitted to every imaginable industrial application
where hydraulic and/or lubrication systems are
present. The air motor makes the unit suitable
for use in explosion hazardous areas, or areas
where no electrical power is available.
The standard range of Air driven Off-line filters
can be utilised in reservoirs with a maximum
volume of 11,000 litres.
In recent years RMF Systems have developed a
great deal of experience in cleaning and keeping
clean hydraulic and lubrication systems in the:
- steel industry;
- plastic moulding industry;
- maritime industry;
- petro chemical industry;
- paper industry.
Advantages
• Extremely clean oil due to high filtration
efficiency.
• Prevention of channel forming by radial
filtration direction.
• Large dirt holding capacity.
• Large water holding capacity.
• Compact and easymaintenance design.
• Environmentally friendly elements available.
• Longer usage life for oil and components.
• Reduces cost of ownership.
34
www.RMFFIlTER.coM
TECHNICAL DATA AIR DRIVEN OFF-LINE FILTERS
Filter model OLUA1A30… OLUA2A30… OLUA1B30… OLUA2B30… OLUA4A30… OLUA4B30…
No. of filter housings 1 2 1 2 4 4
Material filter housing Anodised aluminium
Seal material filter unit Buna-N standard
Nominal flow @ 1.500 rpm 2.1 l/min 4.2 l/min 4.2 l/min 8.4 l/min 8.4 l/min 16.8 l/min
By-pass opening pressure 6.2 bar (at 0 bar back pressure)
No. of filter elements 1 2 2 4 4 8
Length filter elements 300 mm (standard)
Max. pressure filter housing 20 bar
Max. oil temperature 80 °C
Dirt indicator Pressure gauge (0-10 bar, green/yellow/red zones)
Connection pump suction ” BSP female ½” BSP female ¾” BSP female
Diameter hose suction side ½” ¾”
Connection return port ½” BSP female EW 18L - ¾”
Diameter hose return side ½” ¾” or 1” (with long hoses)
Dimensions h x w x d (mm) 425 x 400 x 240 425 x 365 x 340 730 x 400 x 240 730 x 365 x 340 530 x 400 x 500 830 x 400 x 500
Pump type Hydraulic gear pump
Air motor pressure supply Max. recommended operating pressure 7 bar (100 psi)
RPM air motor Speeds may be varied from 300 to 3,000 rpm
Power output air motor Delivers up to 1,5 kW (2 hp)
Max. tank volume ± 1,350 l ± 2,700 l ± 2,700 l ± 5,400 l ± 5,400 l ± 10,800 l
Sample port connections: P1 filter inlet side (red) P2 filter inlet side (yellow)
Test connector M16x2Test connector M16x2
Approximate weight 16.0 kg 23.0 kg 20.0 kg 32.0 kg 41.0 kg 63.0 kg
35
36
Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9
OLUA
ordering codes:RMF Air driven off-line filters
Filtertype:OLUA units
Table 1 Basic configuration
OLUA Off-line unit air driven Industrial applications
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 1,350 l reservoir 1 pcs element (300 mm)
2A Twin housing (single length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
4A Quadruple housing (single length) Suitable for 5,400 l reservoir 4 pcs element (300 mm)
1B Single housing (double length) Suitable for 2,700 l reservoir 2 pcs element (300 mm)
2B Twin housing (double length) Suitable for 5,400 l reservoir 4 pcs element (300 mm)
4B Quadruple housing (double length) Suitable for 10,800 l reservoir 8 pcs element (300 mm)
Table 3 Length element
30 L = 300 mm Standard
Table 4 Filter material
H Cellulose 0.5 micron, silicon bottom seal
N Cellulose 0.5 micron, NO silicon bottom seal
G1* Glass fibre, 1 micron, β1 ≥ 200
G3* Glass fibre, 3 micron, β3 ≥ 200
A5 Glass fibre with polymer, 5 micron, β5 ≥ 200
* G1 and G3 also suitable for Water Glycol
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 6 Air motor options
0 Standard 8 vane lubricated air motor, speed 300 to 3,000 rpm, maximum recommended air pressure 7 bar
www.RMFFIlTER.coM
37
Table 7 Pump options
Code Standard for 50 Hz motor Standard for
00 1.6 cc/rev. group 1 OLU1A
10 3.15 cc/rev. group 1 OLU2A / OLU1B
20 6.1 cc/rev. group 1 OLU4A / OLU2B
30 8.2 cc/rev. group 2
40 11.3 cc/rev. group 2 OLU4B
50 0.8 cc/rev. group 1 obsolete
60 1.0 cc/rev. group 1
Standard for 60 Hz motor
01 1.25 cc/rev. group 1 OLU1A
11 2.5 cc/rev. group 1 OLU2A / OLU1B
21 5.0 cc/rev. group 1 OLU4A / OLU2B
31 6.3 cc/rev. group 2
41 10.0 cc/rev. group 2 OLU4B
Table 8 Indicator
0 Pressure gauge Standard
1 Additional electr. indicator
Optional
2 Additional Δp indicator
Optional
Table 9 Extra options
0 No options
Mini water VacVAcuuM DEHYDRATIoN uNIT
The Mini Water Vac is a designated oil purification unit which can be applied
directly to various types of machine reservoirs. It dehydrates and cleans most
types of oil such as lubricating, hydraulic, transformer and switch oils.
The Mini Water Vac is a self-regulating processing unit which removes
particles, gas and water. The purified oil satisfies the most stringent quality
requirements.
Simple operation
The Mini Water Vac neither removes nor alters oil additives. The water removal
process is based on pure vacuum evaporation inside a vacuum chamber at a
maximum temperature of 65 ˚C. Solid particle removal is achieved through a
well proven RMF Systems micro filter.
Mini Water Vac does not require continuous supervision whilst operating.
Once the unit is connected properly and commissioned, oil purification is
a semi automatic process. Desired oil temperature can be selected on
the thermostat which is included in the integrated heater element of the
dehydration unit.
Oil supply and removal from the vacuum chamber is a full automatic process
which is controlled by a PLC.
The only manual action is the emptying of pre-condenser bowl and waste water
container, both equipped with a float switch to prevent overflow, which will shut
down the dehydration unit once the maximum level is reached.
water, gas and particle removal
Mini Water Vac removes liquid, gas, and solid contamination, which are
corrosive and contribute to the reduction of machine life. Water, gas and solid
particle contamination greatly increase maintenance cost and contribute to
unwanted breakdowns or total machine failures.
Mini Water Vac offers protection against mal-
functions, breakdowns or total failures.
The Mini Water Vac also protects the environment
by reducing oil consumption and oil disposal
along with it is inherent costs and problems.
Benefits
• Efficient water, gas and particle removal.
• Extension of fluid service life.
• Reduces fluid disposal.
• Minimises corrosion within systems.
• Reduces operating cost.
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TECHNICAL DATA MINI WATER VAC
Filter model MWV1A30G1B06000
Voltage (standard) 230/400 VAC 50Hz
Power supply (standard) 3-phase
Frequency (standard) 50Hz
Heater section 2 kW
Vacuum section 0.37 kW vacuum pump
Process control 24 VDC PLC unit
Filtration section 1 micron glass fibre (β1 > 200)
Dimension inlet 1” BSP female
Dimension outlet ½” BSP female
Maximum back pressure 1 bar
Water removal capacity Depending on oil and water contents
Maximum temperature heater 65 °C
Dimensions h x w x d (mm) 1,200 x 740 x 450
Net weight 130 kg
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Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10
MWV
ordering codes:Mini water Vacvacuum dehydration unit
Filtertype:MWV units
Table 1 Basic configuration
MWV MiniWaterVac oil purifier Industrial applications
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 3,000 l reservoir 1 pcs element – (300 mm)
Table 3 Length element
30 L = 300 mm Standard
Table 4 Filter material
G1 Glass fibre, 1 micron, β1 ≥ 200 Standard
G3 Glass fibre, 3 micron, β3 ≥ 200 Optional
A5 Glass fibre / polymer, 5 mic., β5 ≥ 200 Optional
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 6 Power supply options
0 230/400 VAC 50 Hz / 255/460 VAC 60 Hz 3 phase with PLC control Standard
B 230/400 VAC 50 Hz / 255/460 VAC 60 Hz 3 phase with PLC control Standard
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Table 7 Pump options
60 1.0 cc/rev. group 1 Standard
Table 8 Heating element
0 2,000 Watt Standard
Table 9 Extra functions
0 No extra functions
1 Including water sensor
Table 10 Options
0 No options
lube oil By-pass filtersMaintenance is essential for the efficient functioning of engine equipment.
However, it is always a critical decision between the quality of the maintenance
and the costs involved. Optimal maintenance efficiency combines maximum
achievement of the maintenance goal (protection and prolonged usage life of
the object) with minimal use of means (costs). The RMF By-pass filter is unique
in that it not only achieves the goal, but saves on costs.
The RMF By-pass filter keeps the oil clean, resulting in significant technical,
environmental and financial benefits thanks to reduced wear and tear on
equipment and machines and prolonged oil life time. RMF Systems BPL By-pass
filters are used as an additional micro filter connected in by-pass to the
conventional main stream filters on engines (and automatic transmissions).
Most contamination is much smaller than 15 micron in size, but full flow filters
generally do not filter below this level.
This results in a lot of harmful contamination passing through these filters and
remaining in the system.
RMF Systems By-pass filters are capable of filtering down as low as 0.5 micron
without detriment to the lubrication circuit.
Whatever the application, the benefits of the RMF By-pass filters are all based
on maintaining a higher quality and cleanliness level of the oil and thereby
avoiding the multiple problems that can be caused by fluid contamination.
Applications
Construction equipment, agricultural equipment, forestry equipment, diesel
driven welding machines/generators and port equipment.
Applications
• Less malfunctioning.
• Greater reliability of operation.
• Prolonged oil usage life.
• Reduced down time.
• Reduced wear on cylinder linings and pistons.
• Less bore polishing.
• Less formation of black sludge.
• Improved engine compression.
• Increased equipment life time.
Environmental advantages
• Less oil consumption.
• Therefore less waste oil.
• Increased life time of additives.
• Reduction of harmful emissions.
Financial advantages
• Savings in labour and materials (oil changes).
• Reduced costs for repairs and downtime.
• Reduced waste processing costs.
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Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8
BPL
Table 1 Basic configuration
BPL By-pass lube oil unit Engine / Transmission oil
Table 2 Housing configuration Typical reservoir size Number of elements
1A Single housing (single length) Suitable for 32 l sump volume 1 pcs element (282 mm)
Table 3 Length element
26 L = 282 mm Standard
Table 4 Filter material
N Cellulose 0.5 micron
Table 5 Seal material
B Buna-N Standard
V Viton Optional
Table 6 Housing material
0 Aluminium Standard
Table 7 Options
0 No options
Table 8 Bracket options
0 No mounting bracket
1 Standard bulk head mounting bracket
TECHNICAL DATA LUBE OIL BY-PASS FILTERS
Filter model BPL1A26XB001
No. of filter housings 1
Material filter housing Anodised aluminium
Seal material Viton (standard)
Max. oil temperature 100 °C
Orrifice opening size 1.5 mm
No. of filter elements 1
Max. working pressure 6 bar
Connection pressure side (IN) ¼” BSP female
Connection return side (OUT) ¼” BSP female
Dimensions h x w x d (mm) 373 x 160 x 125
Maximum oil sump volume 35 l
Housing volume 2.2 l
Hoses requirementsMin. id = ¼” / t=150 °C
P min. = 13,5 bar
Approximate weight 3.3 kg
Weight bracket Incl.
ordering codes: lube oil By-pass filters
Filter elementsThe principal of the RMF Systems filters is based on the unique original filter
elements. With a choice of filter fineness down to 0.5 micron they have the
capacity to remove even the smallest of dirt particles from the oil.
RMF Systems offers a wide range of elements in micron sizes, filter media and
fluid compatibility. Through a carefully controlled quality process excellent delta P
curves, filter efficiency, water and dirt holding capacity are secured.
cellulose elements
The RMF Systems cellulose filter elements are unique in their design. They
consist of several hundred layers of long fibre cellulose which are wound on a
perforated center tube. The micro filter element works as a fine filter through
which oil passes radially, from the outside to the inside, trapping solid particles
throughout all the layers of cellulose. The long fibre cellulose is also capable
of absorbing water, adding the benefit of moisture removal from the oil.
RMF Systems cellulose elements are extremely efficient and have a large dirt
holding capacity.
The cellulose elements are produced in various sizes to suit all RMF Systems
filter housings. The RMF Systems cellulose elements are compatible with most
commonly used hydraulic and lubricating fluids, including biodegradable fluids.
Glass fibre elements
RMF Systems offers a range of glass fibre filter elements in a fineness of
1 micron and 3 micron. The micro filter element works as a fine filter through
which oil passes radially, from the outside to the inside. RMF Systems glass
fibre filter elements (conventional pleated construction) are extremely efficient
and have a large dirt holding capacity.
The glass fibre elements are suited for all RMF
Systems filter housings (except the size 20 hous-
ing) and are compatible with most commonly
used hydraulic and lubricating fluids, including
biodegradable fluids. The glass fibre filter
elements are also suited for water based fluids.
The glass fibre filter elements are particularly
suited for gearbox applications where high
viscosity fluids limit the use of the cellulose
elements.
water sorb filter inserts
RMF Systems offers a specially designed water
sorb combination filter element: water absorbing
and particle retention. This pleated filter element
with a fineness of 5 micron has layers of polymers
in between layers of glass fibre, creating a unique
media to remove both water and solid particles
from the fluid.
water sorb spin-on elements
RMF Systems offers a specially designed spin-
on filter, the H2O Sorb for water absorbing and
particle retention. This spin-on filter element
with a fineness of 20 micron is constructed of
a unique medium containing water absorbing
polymer which chemically bonds water.
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TECHNICAL DATA FILTER ELEMENTS
Element model 20HB 30HB 30NB 30G1B 30G3B 30A5B H2O sorb
Material filter element Cellulose Cellulose Cellulose Glass fibre Glass fibreGlass fibre and
PolymerPolymer
Filtration efficiency β(2) ≥ 2331 β(2) ≥ 2331 β(2) ≥ 2331 β(1) ≥ 200 β(3) ≥ 200 β(3) ≥ 200 β(10) ≥ 2
Water absorbtion capacity 100 ml 150 ml 150 ml na. na. 350 ml 540 ml
Nominal flow per element 1.4 l/min 2.1 l/min 2.1 l/min 2.1 l/min 2.1 l/min 2.1 l/min As per filter
Max. viscosity
@ nominal flow rate 180 cSt. 800 cSt.
@ other flow rate Consult RMF Consult RMF
Max. oil temperature 80°C (consult RMF for other temperatures)
Length filter elements 200 mm 300 mm 300 mm 300 mm 300 mm 300 mm 270 mm
Seal materials (standard) Buna-N / Silicone Rubber Buna-N
other seal materials Consult RMF
Fluid compatibility
- Mineral oils
H, HL, HLP, HVLP Ok Ok Ok Ok Ok Ok Ok
- Biodegradable oils
HEPG Polyethyleneglycol Consult RMF
HEES Synthetical ester Ok Ok Ok Ok Ok No Ok
HETG Vegetable seed oil Consult RMF
- Fire inhibiting fluids
HFA emulsions No No No Yes Yes No No
HFC glycol / water solution No No No Yes Yes No No
HFD fluids no water content consult RMF
Approximate weight 0.5 (kg) 0.8 (kg) 0.8 (kg) 1.25 (kg) 1.25 (kg) 1.25 (kg) 1.35 (kg)
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Doedijns Hydraulics B.V.Member of Doedijns International
| Coenecoop 103 - 105 | 2741 PH Waddinxveen | The Netherlands | P.O. Box 179 | 2740 AD Waddinxveen | The Netherlands| t. +31 [0] 182 30 28 88 | f. +31 [0] 182 30 27 77| [email protected] | www.doedijns.com| [email protected] | www.rmffilter.com
Doedijns International B.V.
| Coenecoop 103 - 105 | 2741 PH Waddinxveen | The Netherlands | P.O. Box 179 | 2740 AD Waddinxveen | The Netherlands| t. +31 [0] 182 30 28 88 | f. +31 [0] 182 30 27 77| [email protected] | www.doedijns.com
Doedijns Asia Sdn. Bhd. (701989-P)Member of Doedijns International
| 11A Jalan PJS 7/19 | Taman Bandar Sunway| 46150 Petaling Jaya | Selangor D E | Malaysia| t. +60 [0]3 5631 6733 | f. +60 [0]3 5632 6733| [email protected] | www.doedijns.com
Produced by and copyright: Doedijns Hydraulics B.V., Waddinxveen, The NetherlandsTel. +31[0] 182 30 28 88, [email protected], www.doedijns.com. Subject to change!