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User Guide for SMH Negative Pressure Units
SMH Equipment Ltd, a part of the SMH Group · SMH House, Maxwell Street, South Shields, NE33 4PU, UK Tel: +44 (0)191 456 6000 · Fax: +44 (0)191 456 7777 · [email protected]
www. smh products.com NPU - UG - UK - v4
Index
1. Foreword 3
1.1 Guide to pictograms used 3
1.2 The unit 3
1.3 Intended use 3
2. Safety information 4
3. Technical specifications 5
3.1 Technical Data 5
3.2 Dimensions 6
3.3 Technical drawings 7
3.3.1 Standard NPU Motor Plate 7
3.3.2 Standard NPU Side View 8
4. Standard Operating Procedures 9
4.1 Transport of the unit 9
4.2 Operation of the unit 9
4.2.2 Using Roving Filter boxes 11
4.3 Shut down of the unit 11
5. Maintenance of the unit 13
5.1 Regular inspections 13
5.2 Maintenance 13
5.3 Servicing regime 15
6. Declaration of conformity 16
7. Maintenance / Service record 17
Please note, we make every effort to ensure that the information provided in all our material is accurate and up to date, but to the extent permitted by law, we do not accept any legal responsibility for any errors, omissions or misleading statements. If you have any questions about any part of this user guide, please do not hesitate to contact SMH direct for more information.
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1. Foreword This user guide must be read in conjunction with the information plate and any safety warning labels or signs on the unit, and any use of the unit must also be in line with site controls and any local/national legislation controlling the work to be completed.
An NPU should only be used and installed by a competent trained person. It should only be used when provided with an in-date DOP and electrical test certificate.
Please note that any non-observance of this user guide may invalidate any warranty associated with the product.
We recommend all users complete equipment competency training provided by SMH. See our website for more information.
1.1 Guide to pictograms used
⚠ Text in a box like this is information critical to the safe operation of the unit
✓ Text in a box like this is a recommendation to help users to operate the unit in the most efficient/effective way
1.2 The unit
The unit as bought/hired consists of:
1. The unit 2. This user guide
1.3 Intended use
SMH Negative Pressure Units are portable/transportable NPUs incorporating HEPA (High Efficiency Particulate Air) filters covered by BS EN 1822 for use in the controlled removal of asbestos-containing materials (ACMs). They are designed to create negative pressure within a portable decontamination unit facility or working enclosure.
Please note, local regulations may demand a different set-up.
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2. Safety information This section provides a summary of all the safety information provided throughout the user guide.
⚠ Power Rating. The NPUs are supplied in 110v or 230v models. Correct connection of a power supply that provides voltage and current within the specified rating of the system. Use of an incompatible power supply could result in electric shock or fire hazards.
⚠ Electrical Grounding. The NPU has been designed for use with electrical supplies that incorporates a functional earth. Do not connect to a supply that does not have a functional earth facility.
⚠ Internal Voltage. Always turn off the NPU and disconnect the power cord prior to any service, maintenance or cleaning or when not in use.
⚠ Asbestos Exposure. Never remove filters in a non-controlled environment and always use a respirator and appropriate PPE.
⚠ Heavy Equipment. Some of the equipment is extremely heavy to li�.
⚠
PLEASE NOTE: The use of ancillary items such as roving filter heads and/or exhaust ducts can significantly reduce airflow through the NPU. RR988 HSL Research Project – The addition of flexible ducting reduced the volume airflow rate by approx. 1% per metre of ducting and by 2% for a 90deg bend. Based on ducting of 355mm diameter being used and thus significantly reduce the amount of negative pressure achieved within the working enclosure. The accurate monitoring of the negative pressure within the enclosure can only be achieved using an external monitoring device – the manometer fitted to the NPU is not an indicator of negative pressure within the enclosure. You may require additional NPUs to mitigate any shortfalls in performance.
⚠ All personnel engaged in decontamination must follow the health and safety protocols described in the current legislation and guidance.
⚠ The NPU is to be operated under the supervision of competent and trained operators. NOTE Attention is drawn to the Control of Asbestos Regulations, Regulation 13 [1], [2]. It should only be used when provided with an in-date DOP and electrical test certificate. The NPU should not be le� running unattended at any time.
⚠ Filters should be changed under controlled conditions by a qualified, competent person wearing full PPE and RPE. Filters must be disposed of in accordance with local regulations for the removal of asbestos-containing materials and within any site-specific method statements.
⚠ The NPU must be examined and serviced in accordance with UK legislation and the approved code of practice, at least once every six months by an SMH branch or recommended service centre. NPUs sold outside of the UK must be examined and serviced at least once every 12 months and in accordance with local regulations and approved codes of practice.
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3. Technical specifications
3.1 Technical Data MSA 300 DECON 300 DECON 500 DECON 850 NPU 500 NPU 850 NPU 1000 NPU
2500+ NPU
5000+
Case material Polypropylene Polyethylene Polyethylene
Default Case colour White White White White Grey Grey Grey Grey Grey
Weight (kg) 13 12 16 18 19 20 31 46 84
Voltage (v) 110 / 230 230 230 230 230 110 / 230 110 / 230 110 / 230 110 / 230
Calculated load current (a) 0.51 / 0.24 0.24 1.19 1.79 1.19 3.71 / 1.79 3.71 / 1.79 14 / 7
14(per inlet) / 14
Motor power (w) 57 / 55 55 268 411 268 426 / 411 426 / 411 1000 1000 (per inlet) / 2000
Average airflow (m3/h)
208/230 208 495 796 495 752/796 1147/1367 2802/ 2889 5228 / 5244
Average airflow (cfm)*
122/135 122 291 469 291 443/469 675/805 1649/ 1700 3077 / 3087
Maximum Motor noise level (db)
66 81 84 86 84 86 86 88 88
Differential pressure gauge (pa)
0-1250 0-1250 0-1250 0-1250 0-1250 0-1250 0-1250 0-1250 0-1250
Isolation on/off switch
No No No No Yes Yes Yes Yes Yes
Electrical Protection N/A 6A MCB on Decon
6A MCB on Decon
6A MCB on Decon
6A RCBO None / 6A RCBO
None / 6A RCBO
16A MCB/ 16A RCBO
16A MCB/ 16A RCBO
Prefilter Dimensions (mm)
296x296x47 296x296x47 296x296x47 296x296x47 296x296x47 296x296x47 372x372x98 450x450x98 596x596x98
HEPA Filter Dimensions (mm)
305x305x68 305x305x68 305x305x150 305x305x150 305x305x150 305x305x150 381x381x150 457x457x292 610x610x292
Optional Extras
Hour meter Yes Yes Yes Yes Yes Yes Yes / As Standard
Yes / As Standard
Yes / As Standard
Airflow Monitor Yes Yes Yes Yes Yes Yes Yes Yes Yes
Variable speed control Yes Yes Yes Yes Yes Yes Yes Yes Yes
Available Accessories
Available roving filter No No No No Yes Yes Yes Yes Yes
Available spigot plate No No No No Yes Yes Yes Yes Yes
Spigot Diameter mm N/A N/A N/A N/A 150 200 300 300 400
Ducting internal diameter mm
N/A N/A N/A N/A 155 205 305 305 405
Double HEPA Attachment
No No No No No No Yes Yes Yes
Clear Cover Plate No No No No No No Yes Yes Yes
Reducer Boxes No No No No No No No 1500 No
*All information accurate as of date of issue, contact supplier for any queries
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3.2 Dimensions
MSA 300 DECON 300 DECON 500 DECON 850 NPU 500 NPU 850 NPU 1000 NPU 2500+ NPU 5000+ Case length A 300 270 400 400 410 450 580 850 850 Case width B 375 375 375 375 375 375 455 620 806 Case height C 450 375 375 375 400 400 455 530 700 Floor clearance height D N/A N/A N/A N/A N/A N/A 105 105 105 Exhaust outlet diameter E 150 105 x 105 105 x 105 105 x 105 150 200 300 300 400 Exhaust outlet depth F 80 70 70 70 80 80 70 85 80 Cover plate width G 375 375 375 375 425 425 505 635 810 Cover plate height H 375 375 375 375 425 425 505 580 750
All dimensions in mm
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3.3 Technical drawings
Please note, all drawings are indicative only – individual units may differ.
Warning labels on the unit are as follows:
■ WARNING: For use by certified, trained operators only. Handle with care: high efficiency air filtering equipment. Not to be used within a working enclosure.
■ WARNING: The manufacturer’s instructions must be read, understood and followed in the use of this equipment.
■ The unit shall bear a red and white H (hazardous) label, as specified in BS EN 60335-2.69.
3.3.1 Standard NPU Motor Plate
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3.3.2 Standard NPU Side View
3.3.3 Spare Parts
Spare Part Product Codes Item No. Part Name NPU 1000 NPU 2500+ NPU 5000+
1 Rocker Switch B001101 / 90007-EL B001101 / 90007-EL B001101 / 90007-EL
2 Hour Counter POA POA POA
3 Non-return Flap B001656 / 90137-EL POA POA
4 110V inlet/ 230V inlet
B001248 /90032-EL / B001274 / 90048-EL
B001248 /90032-EL / B001274 / 90048-EL
B001248 /90032-EL / B001274 / 90048-EL
5 Motor Plate POA POA POA
6 10mm Bulkhead Connector B000085 / 91232-ST B000085 / 91232-ST B000085 / 91232-ST 7 Variable Flow Controller POA POA POA 8 Airflow Monitor B004747 / 91659-EL B004747 / 91659-EL B004747 / 91659-EL
9 Manometer B001579 / 90121-EL B001579 / 90121-E B001579 / 90121-E
10 Electrical Protection Enclosure B001264 / 90040-EL B001264 / 90040-EL B001264 / 90040-EL
11 110/230V Motor B001586 / 90127-EL B001586 / 90127-EL B001586 / 90127-EL
12 Braked Castor B001575 / 90117-EL B001575 / 90117-EL B001575 / 90117-EL
13 NPU Body POA POA POA
14 NPU Handle B001582 / 90123-EL N/A N/A
15 Unbraked Castor B001581 / 90122-EL B001581 / 90122-EL B001581 / 90122-EL
16 HEPA Filter B004624 / 91106-EL B002219 / 90159-EL B002220 / 90160-EL
17 HEPA Push Plate POA POA POA
18 Clip Strikes B001583 / 90124-EL B001583 / 90124-EL B001583 / 90124-EL
19 Prefilter B001048 / 90004-EL B001049 / 90005-EL B001050 / 90006-EL
20 Cover Plate B001560 / 91262-EL B001552 / 91173-EL B001561 / 90869-EL
21 Over Centre Clips B001549 / 90119-EL B001549 / 90119-EL B001549 / 90119-EL
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4. Standard Operating Procedures The purpose of the SMH negative pressure unit standard operating procedure is to provide guidance for the correct and safe method of use of the units.
⚠ All personnel engaged in decontamination must follow the health and safety protocols described in the current legislation and guidance.
⚠ The NPU is to be operated under the supervision of competent and trained operators. NOTE Attention is drawn to the Control of Asbestos Regulations, Regulation 13 [1], [2]. It should only be used when provided with an in-date DOP and electrical test certificate. The NPU should not be le� running unattended at any time.
Please note, all photographs are indicative only – individual units may differ. If in any doubt, please contact your local SMH branch.
4.1 Transport of the unit
Care should be taken when transporting an NPU. NPUs should be assessed before attempting to li� them from a van or working area. Secure li�ing handles are ergonomically positioned to assist when li�ing NPUs.
Ensure the NPU is securely located before transporting. The NPU must only be transported in a decontaminated state.
Ensure that the transit cover plate is fitted securely to protect and seal the pre-filter during transit.
Handle the NPU with due care and attention, and avoid manhandling while in operation.
4.2 Operation of the unit The unit must be placed on a hardened, vibration-free floor. The unit should be used indoors and kept dry and within a temperature range of +5°C to +40°C.
4.2.1 Running the unit
The NPU will require a 110v or 230v 16amp power supply. Extend the NPU supply cable to the power outlet and plug in the supply plug to the mains outlet.
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With the cover plate attached, turn on the NPU using the rocker switch located on the NPU body. Remove the cover plate when the unit is running to prevent possible fibre release.
Remove the cover plate by unclipping the NPU over centre clips. If necessary switch off the NPU to reduce the suction on the pressure plate. Remove the plate and turn the NPU back on.
Ensure that a clean pre-filter is fitted to the NPU and that it has been taped into place.
Check that the manometer reading on the unit is within its safe operating pressure. The manometer is colour coded to indicate its safe working pressure.
The NPU can now be attached to an enclosure wall and can be fitted with ducting to extract to atmosphere wherever possible. The option is also available to add a spigot and roving filter box to control fibres at source.
When the NPU has been installed, ensure that the brakes are applied on the castors of the NPU to help prevent any movement.
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4.2.2 Using Roving Filter boxes
⚠ The use of ancillary items such as roving heads or exhaust ducts can significantly reduce the airflow through an NPU, which in turn will reduce the negative pressure within the enclosure. RR988 HSL Research project estimates a 1% drop in volume airflow rate for each metre of 355mm ducting used.
If you are using a spigot plate with room for an additional prefilter, the prefilter can be fitted into the spigot plate as fitted into the NPU pre-filter plate (see 5.2.1 Procedure for changing NPU pre-filters).
Attach the flexible ducting using a suitable clip or tape to secure it to the spigot plate/box.
To attach ducting to the NPU, attach the NPU spigot plate to the NPU using its original strikes and over centre clips or by using PCL tape. Pre-filter should be installed into the roving head filter housing – we do not advise using 2 pre-filters.
4.3 Shut down of the unit
✓ Following the correct procedure is not only important to ensure the safe shutdown of your unit – it will also extend the life of your unit, avoiding unnecessary damage and potentially costly repairs.
4.3.1 Procedure for shutting down the NPU
Before an NPU is removed from the enclosure, ensure that a clean pre-filter has been fitted.
Seal the NPU using the transit cover plate to prevent fibre release during transportation.
Switch off and unplug the unit.
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4.3.2 Storage of the unit
Avoid extremes of temperature, damp conditions and/or dusty conditions. The unit must be stored only in a decontaminated state.
4.3.3 Return of the unit a�er rental
NPUs must be returned clean and free from any dust or debris, in a decontaminated state, i.e. with a clean pre-filter fitted, and without damage.
Any customer returning a unit in an unsuitable state as deemed by the receiving SMH branch will be liable to additional charges.
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5. Maintenance of the unit ⚠ The following maintenance procedures and advice for the procedures must be followed to ensure that the
unit is kept in good working order.
5.1 Regular inspections
5.1.1 Pre-use checks Visual checks of electrical equipment for obvious defects should be carried out before each use.
5.1.2 Daily checks
■ Inspection and testing of electrical equipment should be done ■ Inspection, testing and, where required, replacement of HEPA filter ■ Inspection and maintenance of casings/fittings
5.1.3 Weekly checks
Every week, users should conduct a thorough visual check and inspection of all electrical equipment for damage or wear and tear.
5.2 Maintenance
5.2.1 Procedure for changing NPU pre-filters
⚠ Filters should be changed under controlled conditions by a qualified, competent person wearing full PPE and RPE. Filters must be disposed of in accordance with local regulations for the removal of asbestos-containing materials and within any site-specific method statements.
Pre-filters should be changed regularly and only under controlled conditions.
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When taped to an enclosure, cut the pre-filter out of the NPU. Fit a new pre-filter into the NPU and seal it with PCL tape.
Place the dirty pre-filter in a red asbestos bag and follow your company procedures to dispose of asbestos containing materials.
Before an NPU is removed from the enclosure, ensure that a clean pre-filter has been fitted.
Seal the NPU using the transit cover plate to prevent fibre release during transport.
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5.3 Servicing regime
⚠ The NPU must be examined and serviced in accordance with UK legislation and the approved code of practice, at least once every six months by an SMH branch or recommended service centre. NPU’s sold outside of the UK must be examined and serviced at least once every 12 months and in accordance with local regulations and approved codes of practice.
NPUs used in the control of asbestos containing material must be serviced by a competent person to ensure they are working to their design specification.
Please note:
■ Any servicing not completed by an SMH branch or a competent and qualified person voids any product liability claim against us.
■ Any replacement parts must be supplied by and fitted in an SMH branch or a competent and qualified person.
■ Any modifications made to an SMH product a�er the product has been sold will void any product liability claim against us.
■ Any use of the product other than that outlined in section 1.3, above, voids any product liability claim against us.
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6. Declaration of conformity In accordance with BS EN ISO/IEC 17050-1:2010
WE:
SMH Products Ltd, SMH House, Maxwell Street, South Shields NE33 4PU United Kingdom
DECLARE ENTIRELY WITHIN OUR OWN AREA OF RESPONSIBILITY THAT THE PRODUCT:
Negative Pressure Units (NPU) BRAND: SMH MODEL(S): NPU 300, NPU 500, NPU 850, NPU 1000, NPU 2500+, NPU 5000+,
NPU MSA 300, NPU DECON 300, NPU DECON 500, NPU DECON 850 SERIAL N°: 1200 onwards
TO WHICH THIS STATEMENT APPLIES, IS IN ACCORDANCE WITH THE PROVISIONS OF THE FOLLOWING DIRECTIVES:
Low Voltage Directive 2014/35/EU AND IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND THOSE REFERENCED THEREIN : 1
BS 8520-2:2009 (Equipment used in the controlled removal of asbestos-containing materials) BS EN 60335-2-69:2012 (Electrical appliances. Safety for wet and dry vacuum cleaners)
AND MEETS THE REQUIREMENTS OF:
HSG (Health and Safety Guidance) 247, Asbestos: the licensed contractors' guide, 2012 The Electrical Equipment (Safety) Regulations 1994
I hereby declare that the product named above has been designed to comply with the relevant sections of the above referenced specifications. The product complies with all applicable Essential Requirements of the Directives.
Dean Rowe, Chief Executive Officer of SMH Equipment Ltd South Shields, 01/08/2017
1 The titles of some standards have been abbreviated
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7. Maintenance / Service record SMH Products Ltd recommends that all NPUs are serviced and maintained at least every 6 months at an SMH branch or by a competent and qualified person, and that servicing and maintenance frequencies of HEPA filter change are followed as laid out in BS 8520-2:2009. NPUs sold outside of the UK must be examined and serviced at least once every 12 months and in accordance with local regulations and approved codes of practice.
NPU model Serial number
Purchase date Branch
Record Date Engineer Branch DOP Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ PAT Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ Airflow test Recorded airflow
Pass ⬜ Fail ⬜ ______________
Pass ⬜ Fail ⬜ ______________
Pass ⬜ Fail ⬜ ______________
HEPA replaced Y ⬜ N ⬜ Y ⬜ N ⬜ Y ⬜ N ⬜ Any visual damage Y ⬜ N ⬜ Y ⬜ N ⬜ Y ⬜ N ⬜ Parts replaced Description of new parts fitted
Y ⬜ N ⬜
______________
Y ⬜ N ⬜
______________
Y ⬜ N ⬜
______________
Record Date Engineer Branch DOP Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ PAT Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ Pass ⬜ Fail ⬜ Airflow test Recorded airflow
Pass ⬜ Fail ⬜ ______________
Pass ⬜ Fail ⬜ ______________
Pass ⬜ Fail ⬜ ______________
HEPA replaced Y ⬜ N ⬜ Y ⬜ N ⬜ Y ⬜ N ⬜ Any visual damage Y ⬜ N ⬜ Y ⬜ N ⬜ Y ⬜ N ⬜ Parts replaced Description of new parts fitted
Y ⬜ N ⬜
______________
Y ⬜ N ⬜
______________
Y ⬜ N ⬜
______________
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