Monitoring of Filter Contamination Status Visual Indicators Visual/Electrical Indicators Indicators with 2 Switching Points Switching Points: 0,2 to 10 bar

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Maintenance Indicators

Industrial Filters · Accumulators

Pressure indicatorsThese types of indicators are used with return lineand suction filters.

They indicate the need for filter element service.

Type P... indicators and pressure gauges M... They are used for indication of pressure and vacuumin filters and can be used for all non aggressivefluids. Due to the filter element contamination the pressuredrop across the filter is increasing. If the staticpressure (resp. the low pressure in suction filters) has reached the allowable value, the filter elementhas to be changed or cleaned.

Pressures switch H... and vacuum meter I...If the adjusted static pressure (resp. the low pres-sure in suction filters) is reached, an electricalcontact is released, used to indicate visual andacoustic signals for the need of filter element service.

Differential pressure indicatorsThese visual and/or electrical indicators are used to monitor the filter elements contamination status by indicating the differential pressure(pressure drop across the filter).

Indicator type E…, A…, F..., R…., S…, G…, T... and U...When the filter element contamination increases or a selected differential pressure is reached, the pistonwith its switching magnet is pushed against a pres-sure spring.An emerging red pin indicates the filter element ser-vice.The visual/electrical version has an additionalmagnetic switch releasing a switching process.If the pressure drop decreases a reset is causedautomatically.

Contamination indicator type V...The visual indicator type V... is equipped with a three colour disc indicating a green field when aclean filter element is installed.If the pressure drop increases, the disc is moved to a yellow and lastly to a red field indicating the need for filter element service.

Attention!Other electrical data, additional components orplugs on request!

2

Figure 1static pressure

maintenance indicator

M 010

optical

0 – 6 bar

6 bar

–10 °C to +90 °C

G 1/4

–

–

–

–

–

Dimensions

Ordering data

Design

Indication Range resp.Switching point

Max. working pressure

Max. temperature

Connection

Contact

Operating voltage

Resistance max.

Protection class DIN

Spare parts O-Ring

Scheme

G1/4 conical

3

Figure 2static pressure

maintenance indicator

M 012

optical

0 – 9 bar

9 bar

–10 °C to +100 °C

G 1/8

–

–

–

–

–

Figure 3static pressure

maintenance indicator

M 020

optical

0 – 25 bar

25 bar

–10 °C to +100 °C

G 1/4

–

–

–

–

–

Figure 4static pressure

maintenance indicator (glycerin)

M 040

optical

0 – 25 bar

25 bar

–10 °C to +100 °C

G 1/4

–

–

–

–

–

Figure 5static pressure

maintenance indicator

M 070

optical

–1 to +0,6 bar

0,6 bar

–10 °C to +100 °C

G 1/8

–

–

–

–

–

G1/8 conicalG1/4 conical

G1/8 conical

4

Figure 6vacuum-

maintenance indicatorI0,2 HS 32 00PI0,2 HA 32 00P

electrical

–0,2 bar

20 bar

–10 °C to +100 °C

clamp

(HS) normally closed(HA) normally opened

up to 42 V AC

100 VA

IP 54

–

Figure 7vacuum-

maintenance indicator

I0,2 GW 41 00P

electrical

–0,2 bar

16 bar

–10 °C to +60 °C

Pg 9DIN 43 650

changer

up to 24 V DC/250 V AC

100 VA

IP 65

–

Figure 8static pressure

maintenance indicatorH…HS 32 00PH…HA 32 00P

electrical

see ordering information

300 bar

–10 °C to +100 °C

clamp

(HS) normally closed(HA) normally opened

42 V AC

100 VA

IP 54

–

Figure 9static pressure

maintenance indicator

H…GW 33 00P

electrical

see ordering information

100 bar

–10 °C to +100 °C

Pg 9

changer

250 V AC

100 VA

IP 65

–

Protecting cap

Dimensions

Ordering data

Design

Indication Range resp. Switching point

Max. working pressure

Max. temperature

Connection (electrical)

Contact

Operating voltage

Resistance max.

Protection class DIN

Spare parts

Scheme

5

Figure 10static pressure

maintenance indicator

H…GW 26 00P

optical/electrical

see ordering information

16 bar

–10 °C to +60 °C

Pg 11DIN 43 650

changer

24 V DC

100 VA

IP 65

–

Figure 11static pressure

maintenance indicator

H…GS 34 00P

optical/electrical

see ordering information

300 bar

–10 °C to +100 °C

Pg 11DIN 43 651

normally closed

24 V DC

100 VA

IP 65

–

Figure 12static pressure

maintenance indicator

H…GW 41 00P

electrical

see ordering information

16 bar

–10 °C to +60 °C

Pg 11DIN 43 650

changer

up to 250 V AC

100 VA

IP 65

–

green

red

green

red

6

Figure 13Pressure difference

maintenance indicator

F…A0 00 00P

optical

see ordering information

450 bar

–10 °C to +100 °C

–

–

–

–

–

2/ 4 x 2

Figure 14Pressure difference

maintenance indicator

F…GW 02 00P

optical/electrical

see ordering information

450 bar

–10 °C to +100 °C

Pg 9DIN 43 650

changer

up to 175 V AC

5 VA

IP 65

2/ 4 x 2

Figure 15Pressure difference

maintenance indicator

F…GW 26 00P

optical/electrical

see ordering information

450 bar

–10 °C to +100 °C

Pg 11DIN 43 650

changer

24 V DC

5 VA

IP 65

2/ 4 x 2

Figure 16Pressure difference

maintenance indicatorR…GW 09 Z0PR…GW 22 Z0P

electrical

see ordering information

450 bar

–10 °C to +100 °C

Pg 11DIN 43 651

changer

24 V DC

20 VA

IP 65

2/ 4 x 2

* only for gas filters

Dimensions

Ordering data

Design

Indication Range resp. Switching point

Max. working pressure

Max. temperature

Connection (electrical)

Contact

Operating voltage

Resistance max.

Protection class DIN

Spare parts O-Ring

Scheme

green

red

LED green

LED red 100%

LED yellow 75%

7

Figure 18Pressure difference

maintenance indicator

G…A0 00 00P

optical

see ordering information

450 bar

–10 °C to +100 °C

–

–

–

–

–

2/ 4 x 2/ 7 x 1,5*

Figure 17Pressure difference

maintenance indicator

S…BW 11 00P

optical/electrical

see ordering information

450 bar

–10 °C to +85 °C

cable 7 m long

changer

up to 230 V AC

20 VA

IP 67

2/ 4 x 2/ 7 x 1,5*

Figure 19Pressure difference

maintenance indicator

G…GW 02 00P

optical/electrical

see ordering information

450 bar

–10 °C to +100 °C

Pg 9DIN 43 650

changer

up to 175 V AC

5 VA

IP 65

2/ 4 x 2/ 7 x 1,5*

Figure 20Pressure difference

maintenance indicator

G…GW 26 00P

optical/electrical

see ordering information

450 bar

–10 °C to +100 °C

Pg 11DIN 43 650

changer

24 V DC

5 VA

IP 65

2/ 4 x 2/ 7 x 1,5*

Figure 21Pressure difference

maintenance indicator

T…GW 09 Z0P

electrical

see ordering information

450 bar

–10 °C to +100 °C

Pg 11DIN 43 651

changer

24 V DC

20 VA

IP 65

2/ 4 x 2/ 7 x 1,5*

transparentthree lightindicatorsvisible

II 2 GD EEx m II T6 T85°CKEMA 03ATEX1399 X

2 / blue

3 / brown

1 / black

green

red

LED geen

LED red 100%

LED yellow 75%

8

Figure 22Pressure difference

maintenance indicator

U…BW 11 00P

optical/electrical

see ordering information

450 bar

–10 °C to +85 °C

cable 7 m long

changer

up to 230 V AC

20 VA

IP 67

2/ 4 x 2; 1/ 7 x 1,5*–

Figure 23Pressure difference

maintenance indicator

A…A0 00 00P

optical

see ordering information

400 bar

–10 °C to +100 °C

–

–

–

–

–

––

Figure 24Pressure difference

maintenance indicator

A…BW 01 00P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

cable 3 m long

changer

up to 150 V AC

20 VA

IP 65

1/ 7 x 1,5*; 2/ 12 x 3–

Figure 25Pressure difference

maintenance indicator

A…GW 02 00P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

Pg 9DIN 43 650

changer

up to 230 V AC

20 VA

IP 65

1/ 7 x 1,5*; 2/ 12 x 3–

* only for gas filters

Dimensions

Ordering data

Design

Indication Range resp. Switching point

Max. working pressure

Max. temperature

Connection (electrical)

Contact

Operating voltage

Resistance max.

Protection class DIN

Spare parts O-RingRetaining ring

Scheme

II 2 GD EEx m II T6 T85°CKEMA 03ATEX1399 X

2 / blue

3 / brown

1 / black

brown

blue

black

9

Figure 27Pressure difference

maintenance indicator

A…GW 09 Z0P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

Pg 11DIN 43 651

changer

24 V DC

20 VA

IP 65

1/ 7 x 1,5*; 2/ 12 x 3–

Figure 26Pressure difference

maintenance indicator

A…GW 26 00P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

Pg 11DIN 43 650

changer

24 V DC

20 VA

IP 65

1/ 7 x 1,5*; 2/ 12 x 3–

Figure 28Pressure difference

maintenance indicator

A…BW 11 00P

optical/electrical

see ordering information

400 bar

–10 °C to +85 °C

cable 7 m long

changer

up to 230 V AC

20 VA

IP 67

1/ 7 x 1,5*; 2/ 12 x 3–

Figure 29Pressure difference

maintenance indicator

E…A0 00 00P

optical

see ordering information

400 bar

–10 °C to +100 °C

–

–

–

–

–

1/ 7 x 1,5*; 14 x 2; 22 x 21/ 12 x 1

Figure 30Pressure difference

maintenance indicator

E…GW 02 00P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

Pg 9DIN 43 650

changer

up to 150 V AC

20 VA

IP 65

1/ 7 x 1,5*; 14 x 2; 22 x 21/ 12 x 1

green

red

LED green

LED red 100%

LED yellow 75%II 2 GD EEx m II T6 T85°CKEMA 03ATEX1399 X

2 / blue

3 / brown

1 / black

10

Figure 31Pressure difference

maintenance indicator

E…GW 26 00P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

Pg 11DIN 43 650

changer

24 V DC

20 VA

IP 65

1/ 7 x 1,5*; 14 x 2; 22 x 21/ 12 x 1

–––

Figure 32Pressure difference

maintenance indicator

E…GW 09 Z0P

optical/electrical

see ordering information

400 bar

–10 °C to +100 °C

Pg 11DIN 43 651

changer

24 V DC

20 VA

IP 65

1/ 7 x 1,5*; 14 x 2; 22 x 21/ 12 x 1

–––

Figure 33Pressure difference

maintenance indicator

E…BW 11 00P

optical/electrical

see ordering information

400 bar

–10 °C to +85 °C

cable 7 m long

changer

up to 230 V AC

20 VA

IP 67

1/ 7 x 1,5*; 14 x 2; 22 x 21/ 12 x 1

–––

transparentwith two LEDred/green

Dimensions

Ordering data

Design

Indication Range resp. Switching point

Max. working pressure

Max. temperature

Connection (electrical)

Contact

Operating voltage

Resistance max.

Protection class DIN

Spare parts O-RingRetaining ringSealingSealSupporting ring

Scheme

green

red

LED green

LED red 100%

LED yellow 75%II 2 GD EEx m II T6 T85°CKEMA 03ATEX1399 X

2 / blue

3 / brown

1 / black

* only for gas filters

11

Figure 34Pressure difference

maintenance indicator

V…A0 00 00P

optical

see ordering information

400 bar

–10 °C to +100 °C

–

–

–

–

–

2/ 11,1 x 1,78–

2/ 6,5 x 9,5 x 1; 1/ 22 x 27 x 1,5––

Figure 35Pressure difference

maintenance indicator

V…VW 47 00P

optical/electrical

see ordering information

400 bar

–10 °C to +90 °C

Pg 9DIN 43 650

changer

up to 250 V AC

100 VA

IP 54

2/ 11,1 x 1,78–

2/ 6,5 x 9,5 x 1; 1/ 22 x 27 x 1,5–

2/ 7 x 9,8 x 0,6

Figure 36Pressure difference

maintenance indicator

V…VW 49 00P

optical/electrical

see ordering information

400 bar

–10 °C to +60 °C

Pg 9DIN 43 650

changer

up to 230 V AC

100 VA

IP 66PTB Nr. EX 79/1016X

2/ 11,1 x 1,78–

2/ 6,5 x 9,5 x 1; 1/ 22 x 27 x 1,51/ 108 x 50 x 1,52/ 10 x 7,3 x 0,6

blue brown

black

12

Ordering informationmaintenance indicator

M

Type

M = pressure gauge

P = indicatormechanical

maintenance indicator

Additional information

0 = standard

A = only electrical

Z = with two switching points

Material

0 = standard

M = brass

V = stainless steel 1.4571

E

Bauart

A = design A

E = threaded design G 1/2

F = flangeable

G = flangeable

H = Pressureswitch

I = Vakuum-meter

R = flangeable

S = flangeable

T = flangeable

U = flangeable

V = Contaminationindicator

G

Connection

A = optical

B = cabelthree-wire

G = electr. plug

V = electric switch for contami-nation indicator

H = electrical connection without cable(only for pressure switch)

W

Contact

A = normallyopened

S = normallyclosed

W= changer

O = optical

02

Variant

see ordering information of dimensions

0 0 P

Seal

P = Buna N

V = Viton

E = EPDM

N = Neoprene

Addit. Info

S = silicone free

Z = certificates

X = special

4,2

Switching point

0,2 = 0,2 bar for I

0,3 = 0,3 bar

0,8 = 0,8 bar

1,5 = 1,5 bar

2,5 = 2,5 bar

4,2 = 4,2 bar

5,0 = 5,0 bar

6,0 = 6,0 bar

7,0 = 7,0 bar

10,0 = 10,0 bar

1,5 = 1,5 bar

2,5 = 2,5 bar

4,2 = 4,2 bar

010

Indication range

010 = 0 – 6 bar

012 = 0 – 9 bar

020 = 0 – 25 bar

040 = 0 – 25 bar

070 = –1 – 0,6 bar

Switching point

1,5 = 1,5 bar

2,5 = 2,5 bar

forA, E,F, G,H, R,S, T,U

M

forV

P

Special designs available on request

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Industrial Filters · Accumulators

K. & H. Eppensteiner GmbH & Co. KGHardtwaldstraße 43 · D-68775 Ketsch

Phone: +49 6202/603-0 · Telefax: +49 6202/603-199E-mail: info@eppensteiner.de · Internet: www.eppensteiner.de

Please find our distributor’s address on our homepage or on address page enclosed.

64-GB/02/03.07/1000

K. & H. Eppensteiner GmbH & Co. KGHardtwaldstraße 43 · D-68775 KetschP.O. Box 1120 · D-68768 KetschPhone: +49 6202 / 603-0Telefax: +49 6202 / 603-199E-mail: info@eppensteiner.deInternet: www.eppensteiner.de 41

785/

03.0

7/cd

Industrial Filters · Accumulators

SSeerrvviiccee iinnssttrruuccttiioonn ffoorr mmaaiinntteennaannccee iinnddiiccaattoorrss IInnssttaallllaattiioonn Certain maintenance indicators are shipped separately for protectionagainst damage during shipment. These indicators have to be mounted atthe filter prior to startup.

IInnssttaallllaattiioonn ooff ttyyppee AA...... iinnddiiccaattoorr1. remove plug from installation borings 2. tube maintenance indicator at the filter's installation device while

tightening swivel nut (SW 17) and hold up union piece (SW 17) at filter

IInnssttaallllaattiioonn ooff ttyyppee EE...... iinnddiiccaattoorr1. remove plug from filter head 2. check position of both O-rings in maintenance indicator 3. screw indicator into G 1/2 connection thread considering starting

torque of max. 70 Nm (7,1 mkp)

IInnssttaallllaattiioonn ooff eelleeccttrriiccaall iinnddiiccaattoorrIf an electric plug is used it can be turned in any direction after the swivelnut (SW 34) has been released. Tighten swivel nut again.

Connect indicator with a single switching point using the three wiredcable.Please verify electrical ratings on the indicators name plate.Connection settings:1. normally closed : 1 (black & white) + 3 (blue) 2. normally open : 1 (black & white) + 2 (brown) 2. common : 1 (black & white) + 2 (brown) + 3 (blue)

Connect electrical indicators with two switching points in accordance toinstructions on name plate.

CClleeaanniinngg ooff mmaaiinntteennaannccee iinnddiiccaattoorrssDifferential pressure indicators have to be cleaned if highly contaminatedfluids are filtered, because contamination residues can deposit in theindicators upstream side.

Procedure:

Switch off system pump

Flange mounted and type A... indicators:Release plug (socket head cap screw M 12 x 1,5) and remove piston valve.Clean pressure spring, piston valve and indicator boring.Oil piston valve, put on spring, install them inside the indicator and closeagain. Starting torque 20 Nm (2,1 mkp).

Disconnect indicators from filter housing if they are not easily accessible.

Screwable indicators type E...:Unscrew indicator, remove locking ring and compensation disc.Remove piston valve and spring for cleaning.Oil piston valve and install it with spring in maintenance indicator thenclose again with compensation disc and locking ring.

Technical modifications reserved!