Dräger PSS Series Manual

Lung demand valve

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Instructions for use (2 pages)

Quick start manual (3 pages)

Instructions for use (2 pages)

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D D D D D

Training

tm1285.001

Plus and PSS Series - Lung Demand Valve

Dräger

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Page 1 Dräger Dräger Dräger Dräger Dräger D D D D D Training tm1285.001 Plus and PSS Series - Lung Demand Valve...
Page 2 Plus and PSS Series - Lung Demand Valve Index Section 1 Instructions for Use Section 2 Introduction and Safety Warnings Section 3 Product Description Section 4 Operating Principle Section 5 Servicing Instructions Section 6 Test Procedures Section 7 Fault Location...
Page 3 Plus and PSS Series - Lung Demand Valve tm 1285.001 - August 2001...
Page 4 Plus and PSS Series - Lung Demand Valve Section 1 Instructions for Use tm 1285.001 - August 2001...
Page 5 Plus and PSS Series - Lung Demand Valve Positive Pressure Lung Demand Valve - Type A Series 3338727 Positive Pressure Lung Demand Valve - Type AE Series 3338726 Normal Demand Lung Demand Valve - Type N Series 3338725 tm 1285.001 - August 2001...
Page 6 Plus and PSS Series - Lung Demand Valve Section 2 Introduction and Safety Warnings tm 1285.001 - August 2001...
Page 7 Plus and PSS Series - Lung Demand Valve Introduction The Plus and PSS Series range of Lung Demand Valves are approved for use with approved Dräger Compressed Air Breathing Equipment (C.A.B.E.) and Facepieces. The combination of Lung Demand Valve, C.A.B.E. and Facepiece provides the wearer of the equipment with respiratory protection when working in or escaping from a contaminated or oxygen deficient life-threatening environment.
Page 8 Plus and PSS Series - Lung Demand Valve Positive Pressure - Type A Illustrated 1100 tm 1285.001 - August 2001...
Page 9 Plus and PSS Series - Lung Demand Valve tm 1285.001 - August 2001...
Page 10 Plus and PSS Series - Lung Demand Valve Section 3 Product Description tm 1285.001 - August 2001...
Page 11: Product Description
Plus and PSS Series - Lung Demand Valve Product Description The variants of the Plus and PSS Series Lung Demand Valve are as follows: Type A - Positive Pressure with Push-In connector to facepiece. Type AE - Positive Pressure with M45 Screw-In connector to facepiece.
Page 12 Plus and PSS Series - Lung Demand Valve Section 4 Operating Principle tm 1285.001 - August 2001...
Page 13 Plus and PSS Series - Lung Demand Valve Operating Principle Operation Positive Pressure Lung Demand Valves - Types A and AE Refer to Figure 1. Before turning ‘On’ the high pressure air supply the positive pressure mechanism must be switched ‘Off’. This is achieved by pressing the re-set button at the top of the lung demand valve to lift and lock the main pivot lever and diaphragm.
Page 14 Plus and PSS Series - Lung Demand Valve Balanced Piston ‘Closed’ Medium Pressure (M.P.) Fig. 1 0583 Balanced Piston ‘Open’ M.P. Flow to Facepiece Fig. 2 0587 tm 1285.001 - August 2001...
Page 15 Plus and PSS Series - Lung Demand Valve Normal Demand Lung Demand Valves - Type N Refer to Figure 3 The conical compression spring, in the main chamber of the balanced the piston unit, acts against the piston flange resulting in the piston cone being pressed against the sealing rim of the piston housing - sealing ‘Off’...
Page 16 Plus and PSS Series - Lung Demand Valve Balanced Piston ‘Closed’ Medium Pressure (M.P.) Fig. 3 1169 Balanced Piston ‘Open’ M.P. Flow to Facepiece Fig. 4 1170 tm 1285.001 - August 2001...
Page 17 Plus and PSS Series - Lung Demand Valve tm 1285.001 - August 2001...
Page 18 Plus and PSS Series - Lung Demand Valve Section 5 Servicing Instructions tm 1285.001 - August 2001...
Page 19: Table Of Contents
Plus and PSS Series - Lung Demand Valve Contents Section Description Contents Service and Test Intervals Cleaning, Disinfecting and Drying 5.3.1 Important Information 5.3.2 Cleaning and Disinfecting Replacing Diaphragm Replacing Positive Pressure Spring Replacing Medium Pressure Hose 5.6.1 Removing Medium Pressure Hose 5.6.2...
Page 20 Plus and PSS Series - Lung Demand Valve Service and Test Intervals Carry out Inspection, Service and Testing of equipment according to this table. Record all necessary data in the logbook for the equipment. These instructions apply also to non-used in storage equipment.
Page 21 Plus and PSS Series - Lung Demand Valve Cleaning, Disinfecting and Drying 5.3.1 Important Information Dräger recommend that contaminated and dirty components or assemblies are carefully cleaned and disinfected then thoroughly dried after use, or as and when considered necessary by the user.
Page 22 Plus and PSS Series - Lung Demand Valve 3. Rinsing and Drying Remove cleaning and disinfecting solutions by rinsing in clean running water, followed by drying. Do Not exceed a temperature of 60 degrees Celsius when drying components. Immediately remove from the drying cabinet when dry.
Page 23 Plus and PSS Series - Lung Demand Valve Fold rubber cover back over the front of the body of the demand valve to cover and protect the main pivot lever (5). Immerse and manually agitate demand valve, diaphragm, slip ring and bayonet cap in cleaning fluid.
Page 24 Plus and PSS Series - Lung Demand Valve Types A and AE - Locate positive pressure spring of bayonet cap into the recess in centre plate of diaphragm. Using plate spanner, inserted into radial slots of the bayonet cap, lock bayonet cap to body then fold rubber cover back over the front of the demand valve.
Page 25 Plus and PSS Series - Lung Demand Valve Replacing Diaphragm Tools Required Plate Spanner R26817 Refer to Figure 3 - Type A Demand Valve Illustrated. Fold rubber cover (1) from front of lung demand valve. Using plate spanner, inserted into...
Page 26 Plus and PSS Series - Lung Demand Valve Replacing Positive Pressure Spring - Types A and AE Tools Required Plate Spanner R26817 Refer to Figure 4 - Type A Demand Valve Illustrated. Fold rubber cover (1) from front of lung demand valve. Using...
Page 27 Plus and PSS Series - Lung Demand Valve Replacing Medium Pressure Hose 5.6.1 Removing Medium Pressure Hose Tools required Screwdriver 3336222 Plate Spanner R26817 Retractor Tool 3310663 Disconnect demand valve from female quick release coupling of equipment. Note: Fixed variants of the lung demand valves incorporate a medium pressure hose fitted directly to the medium pressure outlet port of the pressure reducer.
Page 28 Plus and PSS Series - Lung Demand Valve 5:10 Insert the hook end of the retractor tool into the hole in the side lugs of the spacer (1) - pull and remove spacer. While keeping the hose fully inserted into the air transfer block (3), slide...
Page 29 Plus and PSS Series - Lung Demand Valve 5:11 Carefully locate outer bead of diaphragm into the body of the demand valve. Locate tapered side of slip ring into recess in bead of diaphragm then locate positive pressure spring of bayonet cap into the recess in centre plate of diaphragm.
Page 30 Plus and PSS Series - Lung Demand Valve 5:12 Replacing Injector Pipe - A, AE, and N Important Note: The Injector Pipes are pre-set units for use only with the correct variant of lung demand valve - A, AE or N. Do Not mix -...
Page 31 Plus and PSS Series - Lung Demand Valve 5:13 Refer to Fig. 11. Using posi-driv screwdriver unscrew retaining screw (1) until the locking arm (2) is able to be withdrawn from castellation of connector (3). Remove connector as follows. attempt to remove push-...
Page 32 Plus and PSS Series - Lung Demand Valve 5:14 Screw-in Types - AE and N Check handwheel freely rotates on connector assembly. If necessary use assembly tool to assemble new O-ring to connector handwheel assembly then using tool (3310679) screw connector handwheel assembly into demand valve body until secure.
Page 33 Plus and PSS Series - Lung Demand Valve 5:15 Air Transfer Block and Balanced Piston Assembly Important Note: The Air Transfer Block and Balanced Piston Assembly is a precision pre-set unit that incorporates a factory set Air Transfer Block Assembly containing a pre-set and sealed balanced piston unit.
Page 34 Plus and PSS Series - Lung Demand Valve 5:16 Refer to Figure 15. Important Note: Spacer (1) must be removed before attempting to remove Clip (2). Insert the hook end of the retractor tool into the hole in the side lugs of the spacer (1) - pull and remove spacer.
Page 35 Plus and PSS Series - Lung Demand Valve 5:17 Remove Air Transfer Block and Balanced Piston Assembly (1) Fig. 17 as follows: Types A and AE - Press re-set button to switch ‘off’ positive pressure. Types A, AE and N - Using two...
Page 36: Fitting Air Transfer Block Assembly - Lever Height Setting
Plus and PSS Series - Lung Demand Valve 5:18 5.8.2 Fitting Air Transfer Block Assembly – Lever Height Setting Tools required Plate Spanner R26817 No. 2 Posi-Drive Screwdriver 3331245 Molykote 111 Grease 3331241 Ball End Setting Tool (1.5mm) 3310676 Height Gauge...
Page 37 Plus and PSS Series - Lung Demand Valve 5:19 Screw-in Types - AE and N Check handwheel freely rotates on connector assembly. If necessary use assembly tool to assemble new O-ring to connector handwheel assembly then using tool (3310679) screw connector handwheel assembly into demand valve body until secure.
Page 38 Plus and PSS Series - Lung Demand Valve 5:20 Refer to Figure 23. Fully insert tailpiece through hole in body of lung demand valve and into hole in air transfer block (3) then push and assemble a new clip (2) over the end fitting of hose - retaining the hose in position.
Page 39 1167 Plus and PSS Series - Lung Demand Valve 5:21 Carefully locate outer bead of diaphragm into the body of the demand valve. Locate tapered side of slip ring into recess in bead of diaphragm. Types A and AE - Locate positive pressure spring of bayonet cap into the recess in centre plate of diaphragm.
Page 40: Lubrication Of Connector Assemblies - M40 And M45
Plus and PSS Series - Lung Demand Valve 5:22 Lubrication of Connector Assemblies - M40 and M45 Important Note: Immersing of components will eventually remove lubricants. Following cleaning, disinfecting and drying it is recommended that functional tests be carried out. Re-lubricate as required. Refer to Page 5:3.
Page 41: Disassembly Of Connectors - M40 And M45
Plus and PSS Series - Lung Demand Valve 5:23 5.9.2 Disassembly of Connectors - M40 and M45 Tools required Screwdriver O ring Lifter R21402 Refer to Figure 27. Fig. 27 1285007 Using the O ring lifter remove and discard O ring (1) and using suitable screwdriver open gap in circlip (2) and remove the circlip.
Page 42: Assembly Of Connector - M40
Plus and PSS Series - Lung Demand Valve 5:24 5.9.3 Assembly of Connector - M40 Tools required Assembly Tool 3310664 Molykote 111 Grease 3331241 Refer to Figure 28. Assemble new quad ring (10) to connector - back (8) and place flange of connector on a flat surface.
Page 43: Assembly Of Connector - M45
Plus and PSS Series - Lung Demand Valve 5:25 5.9.4 Assembly of Connector - M45 Tools required Assembly Tool 3310664 Molykote 111 Grease 3331241 Refer to Figure 30. Assemble new quad ring (10) to connector - back (5) and place flange of connector on a flat surface.
Page 44: Assembly Of Connector Assemblies To Ldv - M40 And M45
Plus and PSS Series - Lung Demand Valve 5:26 5.9.5 Assembly of Connector Assemblies to LDV - M40 and M45 Important Note: If the Injector Pipe has been removed then fit only the correct Injector Pipe to the appropriate lung demand valve.
Page 45 Plus and PSS Series - Lung Demand Valve 5:27 When viewing inside body of the lung demand valve - carefully turn connector anti- clockwise until first castellation connector is visible and centred between the internal slot. Lift the locking arm (2) and locate the...
Page 46 Plus and PSS Series - Lung Demand Valve Section 6 Test Procedures tm 1285.001 - August 2001...
Page 47 Plus and PSS Series - Lung Demand Valve Contents Section Description Test Procedures tm 1285.001 - August 2001...
Page 48 Plus and PSS Series - Lung Demand Valve Test Procedures The Plus and PSS Series range of Lung Demand Valves are approved for use with approved Dräger Compressed Air Breathing Equipment (C.A.B.E.) Standard test procedures for C.A.B.E. are as follows and are covered in the relevant Training Manual for the C.A.B.E.
Page 49 Plus and PSS Series - Lung Demand Valve tm 1285.001 - August 2001...
Page 50 Plus and PSS Series - Lung Demand Valve Section 7 Fault Location tm 1285.001 - August 2001...
Page 51 Plus and PSS Series - Lung Demand Valve Contents Section Description Fault Location Demand Valve tm 1285.001 - August 2001...
Page 52 Plus and PSS Series - Lung Demand Valve Fault Location Demand Valve The high performance Plus and PSS Series Lung Demand Valves incorporate a precision factory set Air Transfer Block Assembly containing a pre-set and sealed balanced piston unit. These items have unlimited service life.
Page 53 Plus and PSS Series - Lung Demand Valve tm 1285.001 - August 2001...
Page 54 Plus and PSS Series - Lung Demand Valve Section 8 Spare Parts and Tool List tm 1285.001 - August 2001...
Page 55 Plus and PSS Series - Lung Demand Valve Contents 1285.001 Lung Demand Valve - Push-In - Type A 1285.002 Lung Demand Valve - Screw-In - Type M45 1285.003 Lung Demand Valve - Screw-In - Type M40 (Rd40) 1285.005 Air Transfer Block and Balanced Piston Assemblies 1285.006 Lung Demand Valve - Screw-In - Type M40 (Rd40) - Straight Connector...

This manual is also suitable for:

Plus series