AFU 13 / AFU 25 User Manual in English
Contents
1. AFU 13 AFU 25 Airline Filter Unit User Instructions Article No 1034951 Issue B 11 2004 AFU 13 AFU 25 Airline Filter Unit Contents WARNINGS uenire sac aue BR Secs gee ux eed oh ve sn wade prd hoe due died n cue ore Ne RE RU ii 1 INTRODUCTION iiu eie HERE raaa CA RE lane NE pa RR Elisa Bi ete e e a EAR e NERA ste 1 1 1 BREATHABLE AIR hand 1 2 SUPPLY PRESSURE AND FLOW DEMAND VALVE FED 1 1 3 SUPPLY PRESSURE AND FLOW CONSTANT FLOW nn 1 1 4 PERSONNEL TRAINING eeeenn nnn m 1 5 SERVICING 2 2 TECHNICAL DESCRIPTION ene us 3 INSTALLATION AND OPERATING PROCEDURE Sane 3 1 CHECK COMPRESSOR SUPPLY wi iiie e vere enean dnt en ee ent ta ne 3 3 2 PURGE AIR cece ca arena due arr EE E A S ie en PM Et 3 3 3 CHECK HOSES es 3 4 CHECK APPARATUS BEES 3 5 CONNECA SUBBICY utere nde Pee Flo Nen tede d e er bu ca Baas onere err enu oca a vai e eek ies 4 3 6 CHECK SUPPLY PRESSURE AND FLOW eeeeeeennrenneenene nnne nnn nnn 4 4 SHUTTING DOWN PROCEDURE wi 4 4 1 REMOVE BREATHING APPARATUS ssseseeeeeneneenneee hehehe nennen n eren 4 4 2 ISOLATE BLEED SUPPLY nt conde secs tni e Kex per ern rta t ket ehm pe n P nde ch pente 4 4 3 DISCONNECT HOSES EQUIPMENT 4 4 4 CLEAN EXAMINE AND TEST EQUIPMENT Hra 4 5 RECORD DETAILS OF USE TE 5 CHECK AFU eere EN 5 1 CHECK SIGHT G2. DOWN PROCEDURE 4 1 REMOVE BREATHING APPARATUS All wearers must remove breathing apparatus in accordance with the manufacturer s instructions 4 2 ISOLATE BLEED SUPPLY Isolate the airline supply and release pressure within the supply line using bleed valve if fitted or by venting through the breathing apparatus 4 3 DISCONNECT HOSES EQUIPMENT Disconnect all hoses from equipment Coil all hoses and connect hose end couplings for safe stowage 4 4 CLEAN EXAMINE AND TEST EQUIPMENT Clean and test all equipment thoroughly and inspect for signs of wear or damage in accordance with the manufacturer s instructions All faults must be rectified immediately 4 5 RECORD DETAILS OF USE A record must be maintained and kept detailing the use of airline breathing apparatus and associated equipment Information recorded usually includes 1 Name and address of the employer responsible for the equipment 2 Particulars of the equipment used including details of the manufacturer model number or mark sufficient to enable clear identification 3 Date of use and length of time the equipment was in use 4 Date of the examination together with the name signature or unique authentication mark of the examiner 5 Condition of the equipment and details of any rectification work carried out 5 CHECK AFU 5 1 CHECK SIGHT GLASS Check sight glasses at the base of housing to ensure that there is no trapped liquid
3. amp SAFETY Sabre Breathing Apparatus Scott Health and Safety Limited Pimbo Road West Pimbo Skelmersdale Lancashire WNS amp IRA England Tel 44 0 1695 711711 Fax 44 0 1695 711775
4. instructions and National Regulations These instructions cannot replace an accredited training course run by fully qualified instructors in the proper and safe use of Sabre compressed air airline breathing apparatus Please contact Training and Technical Support Services or your distributor for training course details Training and Technical Support Services Scott Health and Safety Limited Pimbo Road West Pimbo Skelmersdale Lancashire WN8 9RA England Tel 44 0 1695 711711 Fax 44 0 1695 711775 1 5 SERVICING In order to maintain optimum performance AFU 13 and AFU 25 must be tested regularly and serviced at scheduled intervals by personnel who have completed a formal training course and hold a current certificate for the servicing and repair of Sabre compressed air airline breathing apparatus Instructions for the replacement of filter elements are contained within this manual All other instructions for servicing are contained in the Sabre Service Manual copies of which can only be obtained by registered holders of a current certificate Your distributor or Training and Technical Support Services will be pleased to provide training course details and quotes for service contracts Please see above for contact details 2 TECHNICAL DESCRIPTION The Sabre AFU is an Airline Filter Unit designed to remove dirt particles water and oil from a breathable air supply for use with compressed air airline b
5. LASS hu 5 5 2 CHECK VENTS xps 5 3 CHECK HOUSING xc 5 4 CHECK PRESSURE GAUGE ET 6 ROUTINE MAINTENANCE ixi 6 1 FIRST STAGE AO AND SECOND STAGE AA FILTER REPLACEMENT 5 6 2 THIRD STAGE AC FILTER REPLACEMENT 6 7 SPARE PARTS screen Rus aan LX PEN E UAR ee 7 7 1 AFU 13 ud 7 2 Pac O DAs BR ME EAE mE RE EO EO ATP AONO MEHR OH UII ERNE RR rer QUA 7 Sabre Breathing Apparatus is a division of Scott Health and Safety Limited Registered Office Scott Health and Safety Limited Pimbo Road West Pimbo Skelmersdale Lancashire WN8 9RA England WARNINGS Please Read Carefully and Fully Understand This manual is for use by personnel trained in the use and care of compressed air airline breathing apparatus and MUST NOT be used as a self teaching guide by untrained users Failure to understand or adhere to the AFU 13 AFU 25 User Instructions may result in injury or death Scott Health and Safety Limited have taken great care to ensure that the information in this manual is accurate complete and clear However Training and Technical Support Services will be pleased to clarify any points in the manual and answer questions on compressed air airline breathing apparatus The following warnings are in accordance with certifying authority requirements and apply to the use of breathing apparatus in general This equipment must only be used by persons fully trained in
6. RATING PROCEDURE 3 1 CHECK COMPRESSOR SUPPLY Check compressor inlet to verify that there are no obstructions and ensure that no exhaust fumes vapours or other contaminants enter the inlet connection Ensure that the compressor is operating correctly and not overheating WARNING The AFU WILL NOT remove contaminants such as Carbon Monoxide CO Carbon Dioxide CO or other harmful gases of vapours If these or other harmful gases vapours are present a suitable air purifier MUST be used If using cylinder supply ensure that sufficient air is available for the anticipated tasks 3 2 PURGE AIR Before installing the AFU to an airline supply purge the supply hose with air to remove any water or loose debris which may have become trapped within the line 3 3 CHECK HOSES Ensure that all supply hoses are of a type approved for the supply of breathing air and that they are clean and un damaged Check the operation of all hose couplings to ensure that they connect and disconnect correctly 3 4 CHECK APPARATUS Check the AFU to ensure that all components are clean and un damaged Any components showing signs of damage should be replaced immediately Check breathing apparatus and associated equipment in accordance with the manufacturer s instructions ensuring that all components are clean and un damaged AFU 13 AFU 25 3 5 CONNECT SUPPLY Connect breathing air supply to the AFU inlet and ensu
7. e refer to Section 7 of this manual The first and second stage filter elements will operate indefinitely when only removing liquids from the supply However the build up of solid contaminants becoming trapped will lead to a pressure drop across the filter element indicated by the red warning indicator operating It is recommended that filter elements are renewed after a maximum period of 6000 hours in use or every 12 months whichever is sooner 1 Isolate the AFU from compressed air supply 2 Depress vent valve at the bottom of housing to de pressurise 3 Unscrew lower housing anti clockwise from yoke a warning whistle will sound if the housing has not been fully de pressurised If this occurs re tighten housing and repeat step 2 above before re commencing 4 Unscrew filter element 1 or 2 and discard Fit replacement element ensuring that replacement O Ring is also fitted Ensure that filters are fitted in the correct position ie AO Filter 1 is on the left side as illustrated and AA Filter 2 is on the right AFU 13 AFU 25 5 Fit new O Ring to filter housing Lubricate O Ring with silicone grease if required 6 Inspect inside of filter housings and ensure that they are clean and un damaged Clean housing using a warm water and detergent solution The sight glass on the side of the housing indicates whether the auto drain unit is functioning correctly If dirt or liquid is present c
8. heck to confirm if the unit is functioning correctly If the auto drain unit is malfunctioning the AFU should be sent for Servicing T Once satisfied with the unit re fit housing to yoke by turning in a clockwise direction to secure Tighten hand tight only DO NOT over tighten 8 Connect unit to a suitable airline supply and pressurise to check for leaks 9 Once completely satisfied that the equipment is in good working order it may be returned to service 6 2 THIRD STAGE AC FILTER REPLACEMENT CAUTION DO NOT use solvents to clean any part of the equipment Note The number shown below in brackets ie 3 refers to the item number on the spare parts list contained in Section 7 of this manual For part number information please refer to Section 7 of this manual The third stage filter element has a recommended maximum service life of 1000 hours or 2 months whichever is sooner The pressure differential will not increase during this time but the odour of oil within the air wil become more prevalent 1 Isolate the AFU from compressed air supply 2 Depress vent valve at the bottom of housing to de pressurise 3 Unscrew upper housing anti clockwise from yoke a warning whistle will sound if the housing has not been fully de pressurised If this occurs re tighten housing and repeat step 2 above before re commencing 4 Remove plug in filter element 3 and discard Fit replacement eleme
9. ions 1989 and the Personal Protective Equipment Directive 1993 DISCLAIMER Failure to comply with these instructions or misuse of the apparatus may result in death injury or material damage and invalidate any warranty or insurance claims COPYRIGHT This manual must not be copied in part or whole or used for purposes other than its intended purpose without the written permission of Scott Health and Safety Limited 1 INTRODUCTION 1 4 BREATHABLE AIR Air used to supply breathing air may be natural or synthetic The composition of breathable air is given in Table 1 Component Volume Dry Air Oxygen 23 14 20 948 Nitrogen 75 52 78 08 Argon 1 29 0 93 Carbon Dioxide 0 05 0 031 4 Hydrogen 0 000 003 0 000 05 Neon 0 001 270 0 001 818 Helium 0 000 037 0 000 524 Krypton 0 000 330 0 000 114 Xenon 0 000 039 0 000 009 Table 1 Breathable Air There is an increased fire risk when the oxygen content is above the value shown The dew point of the air must be sufficiently low to prevent internal freezing The compressor oil used must be compatible with breathing air requirements The mineral oil content shall be such that the supplied air is without the odour of oil The odour threshold is in the region of 0 3 mg m Scott Health and Safety Limited recommend that the purity and quality of air used to supply breathing apparatus is tested periodically in accordance with National Regula
10. nt ensuring that replacement O Ring is also fitted 5 Fit new O Ring to filter housing and lubricate O Ring with silicone grease if required 6 Inspect inside of filter housing and ensure that it is clean and un damaged Clean housing using a warm water and detergent solution Any signs of damage or corrosion should be rectified immediately 7 Once satisfied with the unit re fit housing to yoke by turning in a clockwise direction to secure Tighten hand tight only DO NOT over tighten 8 Connect unit to a suitable airline supply and pressurise to check for leaks 9 Once completely satisfied that the equipment is in good working order it may be returned to service AFU 13 AFU 25 7 SPARE PARTS TA0304 7 1 AFU 13 Item No Article Number Description 1022103 First stage AO filter element complete with O Rings 1022105 Second stage AA filter element complete with O Rings 1022107 Third stage AC filter element complete with O Rings Note For all other component details please refer to the Service Manual 7 2 AFU 25 Item No Article Number Description 1022113 First stage AO filter element complete with O Rings 1022115 Second stage AA filter element complete with O Rings 1022109 Third stage AC filter element complete with O Rings Note For all other component details please refer to the Service Manual tuca CHTT HEALTH
11. or dirt The presence of liquid or dirt indicates a malfunction of the auto drain valve If this is the case the AFU should be sent for Servicing Remove and clean housings in accordance with the instructions shown overleaf if dirt or liquids are trapped 5 2 CHECK VENTS Depress the small metal plunger on the underside of housing and ensure that it operates correctly there should only be light spring pressure resistance If the vent valve is sticking the AFU must be sent for Servicing The weeping of liquid from the vent valve indicates a malfunction of the auto drain valve If this is the case the AFU should be sent for Servicing 5 3 CHECK HOUSING Check the housing for signs of abrasion corrosion or damage If a fault is found the unit must be withdrawn from service and the fault rectified in accordance with the Service Manual 5 4 CHECK PRESSURE GAUGE Check inlet pressure gauge to ensure that it is un damaged and functioning correctly WARNING An inoperative pressure gauge may result in hazardous dismantling of the unit whilst it is still pressurised AFU 13 AFU 25 6 ROUTINE MAINTENANCE 6 1 FIRST STAGE AO AND SECOND STAGE AA FILTER REPLACEMENT CAUTION DO NOT use solvents to clean any part of the equipment Note The numbers shown below in brackets eg 1 refer to item numbers on the spare parts list contained in Section 7 of this manual For part number information pleas
12. re that the flow is in the correct direction indicated by an arrow on top of the filters Check that inlet pressure does not exceed 10 bar CAUTION The AFU MUST be positioned vertically or it will not function correctly Ensure that the positioning of the AFU is such that it is unlikely to be damaged tilted or overturned Ensure that the hose cannot become kinked or constricted Check that the indicator on the first stage filter is showing the green safe mode Renew filter element if the red warning indicator is showing Listen for any audible leaks and ensure that all hose connections and filter retainers are secure Rectify faults immediately 3 0 CHECK SUPPLY PRESSURE AND FLOW Connect breathing apparatus supply hose to the AFU outlet Check that supply pressure and flow at the extremity of the hose adjacent to the wearer are in accordance with the figures given in Sections 1 2 or 1 3 of this manual as appropriate If the AFU inlet pressure is sufficient but the hose outlet pressure is low check to ensure that the filters do not need replacing Replace the filters if required Once fully satisfied that the equipment is functioning correctly proceed to undertake the required tasks WARNING During use the airline supply equipment must be under constant supervision in order to ensure that an adequate air supply is maintained and to alert wearers of potential hazards 4 SHUTTING
13. reathing apparatus Sabre AFU is available in two sizes dependant upon the maximum flow rate required AFU 13 has a maximum flow capacity of 13 litres per second 28 cubic feet per minute This unit can only be used to supply a maximum of 3 wearers of demand valve fed apparatus or 2 wearers of constant flow apparatus AFU 25 has a maximum flow capacity of 25 litres per second 53 cubic feet per minute This will allow up to 6 wearers 3 pairs of demand valve fed apparatus or 4 wearers 2 pairs of constant flow apparatus These units are available either mounted in a tubular steel floor stand or in a box enclosure suitable for wall mounting All units work on the same principle utilising a three stage filtration system The first stage AO Filter is a high efficiency coalescing filter for the removal of dirt particles down to 1 x 10 metres in size The second stage AA Filter is a high efficiency coalescing filter for the removal of oil mist water aerosol and dirt particles down to 0 01 x 10 metres in size with a maximum remaining oil content of 0 01mg m An auto drain valve is fitted to each of the first and second stage filter housings to allow water and other liquids to be safely drained away The third stage AC Filter is an absorption bed of activated carbon for the removal of oil vapours and odours The air supply following this stage has a maximum remaining oil content of 0 003mg m ata temperat
14. the use and care of compressed air airline breathing apparatus The quality of air used to supply compressed air airline breathing apparatus must meet the requirements of EN 12021 1999 The level of contaminants shall not exceed the maximum permitted exposure level Please refer to National Regulations for guidance Scott Health and Safety Limited recommends that the air supply is regularly tested to ensure compliance with these requirements AFU 13 and AFU 25 are only designed to remove water oil and debris from the air supply AFU 13 and AFU 25 WILL NOT remove carbon monoxide CO carbon dioxide CO or other toxic gases or fumes from the air supply Ensure that the selection of equipment is sufficient for the tasks being undertaken and the hazards likely to be encountered Please refer to National Regulations for guidance Guidance can be found within the Health and Safety Executive publication HS G 53 Respiratory Protective Equipment a Practical Guide for Users Ensure that the air supply pressure and flow is sufficient with regard to the number of apparatus wearers breathing from the supply For further guidance please refer to Sections 1 2 and 1 3 All breathing apparatus and breathable air supply equipment must be regularly tested and maintained in accordance with National Regulations In the UK equipment users should refer to the Health and Safety at Work Act 1974 Pressure Systems and Transportable Gas Container Regulat
15. tions and further recommend that a regular maintenance and examination record is kept National regulations must be observed AFU 13 AFU 25 1 2 SUPPLY PRESSURE AND FLOW DEMAND VALVE FED The airline supply pressure and flow must meet the following requirements for use with demand valve fed apparatus being supplied from a single source No of BA Supply Pressure bar Wearers 1 2 1 Pair 3 4 2 Pairs Table 2 Supply Pressure and Flow Demand Valve Fed Apparatus Generally each additional wearer requires an extra 150 litres per minute each additional pair of wearers requires 300 L min for one wearer and 450 L min for two wearers All measurements must be taken at the wearer end of the airline 1 3 SUPPLY PRESSURE AND FLOW CONSTANT FLOW The airline supply pressure and flow must meet the following requirements for use with constant flow apparatus being supplied from a single source No of BA Supply Airflow L min Pressure bar 1 300 500 2 1 Pair 600 1000 3 900 1500 4 2 Pairs 1200 2000 Wearers Table 3 Supply Pressure and Flow Constant Flow Apparatus For each additional wearer add a minimum of 300 to 500 litres per minute All measurements must be taken at the wearer end of the airline AFU 13 AFU 25 1 4 PERSONNEL TRAINING Personnel who use compressed air airline breathing apparatus must be fully trained in accordance with these
16. ure of 21 C The maximum unit inlet pressure is 10 bar If the supply pressure exceeds this it will be necessary to fit an in line regulator and pressure relief valve PRV to protect the AFU from over pressurisation A pressure gauge on the inlet provides a clear indication of the supply pressure The 3 8 BSP male inlet connection on the pressure gauge can accommodate a suitable supply hose or medium pressure airline coupling The outlets are CEJN female couplings of which two are provided on the AFU 13 and four on the AFU 25 The filter elements are located in robust metal housings fitted to a central yoke The housings may be removed by hand to facilitate quick and easy replacement of filter elements The first stage particulate filter has an indicator fitted which changes from the safe green mode to the red warning mode when the filter element needs replacing The recommended frequency of filter element replacement is as follows Filter Element Replace After Maximum 6000 hours use OR Every 12 months First Stage AO Filter Maximum 6000 hours use OR Every 12 months Second Stage AA Filter Maximum 1000 hours use OR Every 2 months Third Stage AC Filter Table 4 Frequency of Filter Element Replacement Note It may be necessary to change filter elements more frequently if the airline supply is heavily contaminated AFU 13 AFU 25 3 INSTALLATION AND OPE
Download Pdf Manuals
Related Search