Draegar PA 90 Service Manual - Irish Fire Services Resource
Contents
1. Replace sealing o ring P N 4598340 or entire gauge assembly Install gauge assembly Apply Loctite 222 sparingly to gauge threads Tighten gauge assembly in valve 1 NOTE Ensure pressure indicators are properly aligned CAUTION Do not over tighten gauge assembly Replace covers and washer in reverse order of disassembly PA 90 Series Service Manual H 16 5 3 Handwheel Tools Required 1 crows foot Slotted 1 2 flat tip torque wrench 0 40 nm CAUTION Ensure cylinder is completely empty before removing components Remove handwheel retaining nut 8 handwheel 7 spring 21 and plate 20 Remove retaining bonnet 19 using 1 crowsfoot Remove all internal components o ring 18 gasket 17 stem 16 and valve and plug seat 15 e Replace o rings 5 as necessary Installation e Screw in closing bolt 15 completely Then screw out one turn Insert all internal components stem 16 gasket 17 and o ring 18 NOTE Inspect copper sealing ring 17 If it is damaged or leaks develop contact National Draeger Technical Service for replacement information Torque retaining bonnet 19 to 24 fulbs 33 nm Install spring plate 20 spring 21 and handwheel 7 Apply loctite 222 to retaining nut 8 Tighten until flush with upper spindle Disassembly Assembly Section II Rev 1 August 1996 5 4 Valve Removal Tools Required Cylinder vise 1 2 drive valve repla2. speech diaphragm If the speech diaphragm is deformed or shows signs of damage it must be replaced The speech diaphragm is a very thin foil which could easily contribute to considerable leakage if it is damaged When inserting the speech diaphragm always ensure that the gasket is present and in good condition NOTE Take care not to crush the perforated section of the diaphragm If the perforated section of the diaphraqm is crushed it will decrease the sound transmittance properties of the diaphragm Insert diaphragm with perforated section facing the interior of mask e Install threaded ring and tighten with spanner wrench R26817 e Reinsert nosecup 13 Disassembly Assembly Section II Rev 1 August 1996 Connector Exhalation valve ao Spring Bridge Exhalation valve cover Figure 14 N Inhg ting Speech diaphragm ing Figure 15 PA 90 Series Service Manual Disassembly Assembly Section II Rev 1 August 1996 3 4 Changing the Connector Screw Type Clamp e Loosen screw of clamping collar with screw driver and remove clamping collar with support plate e Take connector out of mask body Mask body e Insert new connector such that the center marks on the connector and on mask body coincide Clamp e Clamp support plate under collar and onto clamping frame and align it e Tighten screw until the protruding portion of screw is flush with the end o
3. until a steady whistle sound is heard Put LDV back in Donning mode Reopen cylinder valve then close cylinder valve Bleed down LDV to check set point If no good back out nut and go back to Step 1 10 hT good setting lock in locking nut with 16 mm wen NEN RER VSE LOCATITE dya Do nor oN E 11 Check setting 1 more time Wal notional dr c COM Rue HISE thai PRESS Rep Weise Lou RESSE m Testing Troubleshooting Section IH Rev 1 August 1996 1 1 10 Mask Leak Test Leak Test Panorama Mask Inflate and moisten mask balloon Do MoT OVER INPE e Moisten mask exhalation valve and attach mask to balloon Cennnu T were NOTE Ensure the balloon seams are not on the mask sealing surface 7 a KL Connect maskto the test kit using the connector and hose e Attach squeeze bulb and create negative pressure 7 to 10 mbar in the mask e Clamp off the bulb and not that the pressure does not change more than 1 mbarimin 1 1 1 1 Exhalation Valve Opening Test Test Exhalation Opening Point e Leave test setup as in the previous leak test e Reverse the squeeze bulb and slowly apply positive pressure The pressure gauge needle will stop rising when the exhalation valve opens The exhalation valve must not open before 45 mbar is indicated ee ee jua omer X x S Yai 3 gt S lt PA 90 Series Service Manual lli 4 Testing Troubleshooting Section III Re
4. 60 seconds 1 1 2 High Pressure Cylinder Test Check High Pressure in Cylinder e Connect the high pressure gauge to the high pressure cylinder e Ensure that relief valve is closed on the gauge and slowly open the cylinder valve e Note the reading on the SCBA test kit gauge and compare to the readings on the PA 90 Series high pressure ekest gauge The kit gauge should agree within 5 oF BOT e Close the cylinder valve and slowly open the SCBA test kit gauge relief valve CAUTION Ensure that the vent on the gauge is pointed away from face and hands ug 7 LL PA 90 Series Service Manual 1 1 3 High Pressure Leak Test Test Complete Unit for Leakage Attach all components to backplate LDV amp cylinder Ensure LDV is in donning mode Open and close cylinder valve twice Observe high pressure gauge and ensure ressure does not decrea e more than lt El Cepek ente 200 psiin 1 minute 02 After test drain pressure from the system Fall b 1 1 4 Medium Pressure Test Test Medium Pressure II 2 Attach a high pressure cylinder to the reducer Ensure there is enough air in the cylinder gt 80 for operation Insert the medium pressure gauge in the medium pressure quick disconnect used for the LDV or the buddy breather Ensure the gauge relief valve is closed and open the cylinder valve e Note the initial reading on the gauge and ensure that it falls within 87 130 ps
5. Move palm of hand from regulator connector until only a small volume of air can escape This will allow the pressure to drop slowly Observ ing the apparatus pressure gauge while the pressure is dropping slowly ensures that the whistle activates when the pressure reaches 25 2 of rated cylinder pressure 4 LDV Operation Set the regulator to the donning mode simply depress the donning switch Open cylinder Depress bypass to ensure air flow Close cylinder valve 5 Low Pressure Leak Test Close cylinder valve Depress the bypass to bleed air from the system Once this is done no more air should be able to be drawn from the system 6 LDV and Facepiece Connection Connect the LDV to the facepiece and check for a snug fit Uncouple the regulator by depressing the button on the facepiece connector and pulling the regulator out of the facepiece Check that the o ring on the regulator connector is in good condition and lightly lubricated PA 90 Series Service Manual Iv Maintenance Schedules Equipment 1 2 Maintenance Schedule 0 Dr ger Recommendation E Lightly grease lung demand regulator connector o ring Molykote 111 as required v CI If lung demand regulator assemblies are regulatly im mersed in solutions Drager recommends that banjo O rings are re greased after 100 clean amp disinfect cycles complete Apparatus Clean and disinfect as necessary Visual inspection Functional amp leak testing a
6. Press reset lever of lung demand regulator Do not press center of rubber cover while pressing reset lever or force lever against stop PA 90 Series Service Manual IV 4 1 1 3 Pressure Reducer and Hose Assem biy NOTE These procedures must be performed by a properly trained technician Level I using a SCBA Test Kit 1 For cleaning and disinfecting remove pressure reducer and hose assembly from backplate 2 Unfasten hose loops releasing hoses and remove reducer and hose assembly NOTE Do not immerse pressure reducer in cleaning or disinfecting baths 3 Using a clean cloth moistened in Dr ger Safety Wash or Desi EW80 Des remove dirt and contaminants from pneumatic assembly 4 Using a clean cloth moistened in clean water remove cleaning or disinfecting residue Dry NOTE Do Not exceed a temperature of 140 F when drying components 5 Reassemble reducer and hose assembly to backplate Maintenance Schedules Equipment Section IV Rev 1 August 1998 1 1 4 After Each Use Recharge orreplace the cylinder with a National Draeger approved cylinder charged to full service pressure Use only cylinders with current hydrostatic test pressure dates Inspect the unit for worn or damaged parts with particular focus on the pressure reducer o ring LDV o ring and the exhalation valve Check these parts for damage or debris which may jeopardize its seal Remove any debris that may be present REF E AL
7. for credit if value is less than 60 00 at invoiced price unless National Draeger is in error All materials being returned for credit as a result of shipping error on part of National Draeger must be returned to National Draeger within ten 10 days after receipt of incorrect material On items ordered incorrectly or no longer needed by the customer a minimum restocking charge of 15 will be assessed unless it is a detection tube then a minimum restocking charge of 30 or 50 00 whichever is greater will be assessed Return of parts older than one year subject to refusal due to shelf life of parts Goods must be received in the same condition as originally shipped Repair orders must be accompanied by a purchase order number This includes warranty repairs PA 90 Series Service Manual V 5 Emergency and Rush Orders All emergency orders will be shipped the 4 same day if called in by 3 00 P M eastern standard time WE CONSIDER AN ORDER AN EMERGENCY ONLY WHEN AIR FREIGHT IS REQUESTED UPS Second Day Service is not considered an emergency order All emergency and rush orders air freight and next day services will be subject to a special handling charge All next day emergency orders placed after the cutoff time will be assessed a 25 00 handling fee 6 Return Goods Authorization 1 Return Goods Authorizations RGA s are issued to a customer who requests to return a product to National Draeger
8. repair testing and operation of this equipment IMPORTANT For further information on any supportive documentation contained in this manual please contact National Draeger Inc Technical Service Department PA 90 Series Service Manual i ii Table of Contents Notice Proprietary Information sss i Repairs Modifications m m important Information eee ereer ereer i Theory of Operation 1 Backplate rere rrer 1 1 Purpose serere errer errr 1 2 Construction sss causn sens onan con nne nenen 19 F R US rhin animent 2 HATNES SE Hier men dires 2 1 PUrpose anen scan science nete rere 2 2 Construction ss 2 31 Features rn r t rt tte 3 Pressure Reducer sss sees eee 3 1 Purpose sessssssesserersrsrssssssneernerensnsnsnannnnn 3 2 Construction sn 3 3 TT screen interne 3 4 Technical Data sss 4 Chest Mounted Whistle Warning Unit 451 PUIPOSG i sido bn ne ei 42 Construction withered aes 4 3 Technical Data wns 5 Chest Gauge nuits E Ans rs ST 5 3 Features msn 6 Lung Demand Regulator E dessa blinda ne 6 2 Features Kerci dd 6 3 Technical Data 7 Panorama Nova Mask sessies 7 1 Purpose k rer i ae sb sdst ennen 1 2 Construction Zara lan eed 7 3 FRATUTES mr 7 4 Technical Data wuss 8 Cylinder and Valve Assembly daci 8 1 PUrPOSS murmure 8 2 TITS 8 3 Technical Data ama xa cause nsien BB CD CL CL WWM D D D D PR SOO ca LOOO OG l d d A Qn Qn Qn n P HS General Section i Rev 1 August 1996 ll D
9. the e Attach squeeze bulb and apply positive test kit pressure 7 to 10 mbar Open cylinder valve and depress bypass to e Clamp off bulb and ensure pressure drop is ensure air flow USE FLIWMETER C 1 mbarimin NOTE e Ensure that the pressure does not ingrease This test checks the bypass function f on the gauge means LO els ba pob bypass function knob has been removed 1 1 7 LDV Static Positive Pressure Test and or replaced this flow must be reset Test LDV for Static Positive Pressure to 80 130 LPM 28 4 5 SCFM Contact National Draeger Technical Service Department for details Leave test setup same as in leak test above ot Close cylinder valve and depress bypass to Reverse squeeze bulb to create negative relieve pressure pressure Depress and slowly release bulb POLO imb ajet BuG ExiT Pet LDV should switch to positive peu at a Cie as PN 4405 4998 Chon PPE value of 25 mbar 932 Connect test tubing TT O RING gt 4654 mask exhalation valve and ensure pressure Ja auge indicates between 1 and 3 75 mbar Il 3 PA 90 Series Service Manual DD Aa o 8 9 AE UTE MP 85 120 Ww cots ETTING WHISTL Lol Tt dup Put LDV in Donning mode Open cylinder valve then close cylinder valve Bleed down LDV to 600 psi 2216 SCBA s or 1200 psi 4500 SCBA s Put LDV back in Donning mode at desired setting Use 16 mm wrench and turn adjusting nut in clockwise direction
10. 1 9 LDV Bypass Function ie dre 3 1 1 10 Mask Leak Test crre 1 1 11 Exhalaton Valve Opening Test 4 IV Maintenance Schedules Equipment 1 1 Maintenance Procedures s 1 1 1 Facepiece occ 11 2 Lung Demand Valve LDV 1 1 3 Pressure Reducer and Hose Assembly sssrin 1 1 4 After Each Use wii 1 1 5 Functional Test we 2 Maintenance Schedule 3 Maintenance Equipment 1 3 1 Maintenance Support Equipment sses 1 3 2 Torque Specifications 10 1 3 3 Lubricants and Adhesives 11 PA 90 Series Service Manual V Service Reporting E fete kute hrni 2 2 SCBA Service Log 3 3 Terms of Payment sss s sss sss eric 4 4 Return Goods Policy eee 4 5 Emergency and Rush Orders 4 6 Return Goods Authorization oo 5 7 National Draeger s Product Service lp TAGS SA s Re ae nr sl riad VI Service Instruction History Drager I Theory of Operation Theory of Operation Section Rev 1 August 1996 1 Bac kplate 1 1 Purpose The PA 90 Series backplate is ergonomically designed to provide maximum comfort and minimum stress on the back 1 2 Construction The PA 90 Series backplate is made of compos ite materials for maximum strength and mini mum weight The ProAir backplate may be blue or gray and is composed of nylon and fiberglass filaments The AirBoss is black and is composed of nylon and carbon filaments 1 3 Features The PA 90 Series backp
11. Burst Disk Replacement Maintenance Test Equipment Part Description Comments 4052350 SCBA Test Kit Mandatory for Levels amp I 4054001 Aerotest Kit Low Pressure 150 psi max D20700 R Aerotest Kit High Pressure 4500 psi max 4054968 Bypass Flow Meter LDV Bypass Flow 80 to 130 Ipm 28 to 4 5 SCFM Mandatory for bypass adjustment Recommended But Not Mandatory Equipment Ultra sonic Cleaner MFG Branson Model 5200 IV 9 PA 90 Series Service Manual Maintenance Schedules Equipment Section IV Rev 1 August 1996 1 3 2 Torque Specifications A Cylinder Valves and Components Valve to Cylinder Torque Comments PA 90 22 16 80 10 ft Ibs replace and relubricate 4052006 o ring 4059037 PA 90 4500 replace and relubricate 4052012 o ring 4059027 Safely Plug to Valve Safety Plug 4052098 65 10 in lbe add drop of Loctite 290 all PA 80 Series 4054087 NOTE Prior to tightening inspect threads and sealing surface for damage Threads and sealing surface must be clean and undamaged before tightening otherwise damage to components may occur Exceeding recommended specification may result in damage to components PA 90 Series Service Manual IV 10 Maintenance Schedules Equipment Section IV Rev 1 August 1996 1 3 3 Lubricants and Adhesives Lubricants Lubricant Part Number Dow Corning 4059123 use sparingly on all rubber Molykote 111 O rings recommended for us
12. Drager PA 90 Series Service Manual Notice Proprietary Information This service manual contains confidential information in which National Draeger Inc claims proprietary rights The information is disclosed in confidence and may not be used reproduced or disclosed in whole or in part except as authorized in writing by National Draeger Inc This information is the property of National Draeger Inc and is provided solely for the use intended and shall be returned upon demand Repairs Modifications Repairs on this unit should be performed only by National Draeger inc or its Authorized Service Technicians information about repairs can be obtained from National Draeger Inc by contacting the Technical Service Department at P O Box 120 Pittsburgh Pennsylvania 15230 412 787 8383 National Draeger Inc will not be responsible for injury to persons or damage to property arising directly or indirectly from unauthorized repairs or modifications to this unit Furthermore any unauthorized repairs or modifications voids any warranty extended by National Draeger Inc This service manual is provided for your information only updates will be sent out periodically All information subject to change without notice General Section i Rev 1 August 1996 aurea sures pement er son J STATES DEPARTMENT OF LABOR MSHA MINE SAFETY AND HEALTH ADMINISTRATION U S Department ot Health and Human Service Cente
13. I neni 51 7 1457 4500145 KV 17 0 74 812108 4500160 KV E T EEE 98 912790 2800145 FG nani 19 32 Su 68 4 1930 2216 30 FG HW 16 tres 46 5 1311 2216 30 FG FW a 13 2 46 1 1300 2216 30 ALUN pan SR 45 911295 PA 90 Series Service Manual I 10 Drager II Disassembly Assembly Disassembly Assembly Section Il Rev 1 August 1996 Pneumatic Arrangement Maintenance Tools required 14 mm AF open ended spanner 20 mm AF open ended spanner or adjustable spanner 1 1 Replacing Pressure Gauge Hold manifold block 7 using either adjustable or 20 mm AF open ended spanner e Use 14 mm AF open ended spanner or adjustable to unscrew gauge 9 from manifold block Remove gauge cover 10 Figure 1 Remove sealing washer 8 from bore of manifold block and inspect bore thread for damage Insert new sealing washer into manifold block Refit gauge cover Screw new gauge into manifold using spanners Ensure correct orientation as shown in Figure 1 NOTE Hold assembly with gauge vertical and apply Loctite 290 sparingly around gauge thread following initial thread engagement PA 90 Series Service Manual 2 Figure 1 Disassembly Assembly Section II Rev 1 August 1996 1 2 Disassembly Assembly of Replace capillary tube assembly if damaged Whistle Warning Unit Inspect seal 8 Replace if necessary Ensure replacement seal is refitted with open end Tools requir
14. L WORN OR DAMAGED PARTS IMMEDIATELY Check the LDV connector o ring for lubrication If dry apply a thin film of Dow Corning 111 1 1 5 Functional Test IV 5 Ensure that a properly trained technician Level technician using an SCBA Test Kit tests any component whose function or seal may have been altered due to service by cleaning or replacement Perform a function test on the apparatus 1 Cylinder Pressure and Gauges Open the cylinder valve and note the pressure reading on the cylinder pressure gauge Compare chest gauge reading to the cylinder gauge reading The two values must be within 10 of the full scale For example the gauges on a 4500 unit read O 5000 psi Each gauge has an accuracy of 5 or 250 psi When comparing gauges total accuracy is 10 or 500 psi PA 90 Series Service Manual Maintenance Schedules Equipment Section IV Rev 1 August 1996 2 High Pressure Leak Test Close the cylinder valve and observe the pressure gauge on the apparatus After one minute reopen the cylinder valve and observe the pressure gauge needle for movement If the needle moves less than one graduation on the gauge 200 psi proceed to step 3 3 Whistle Operation Ensure that operation and activation of the whistle is satisfactory by opening the cylinder valve to pressurize the system then closing the cylinder valve Place the palm of the hand over the connection port of the LDV and activate
15. T L an AY SKAN SOK Diagram Field of Vision TH An z Figure 3 Po pe oc amp PA 90 Series Service Manual I 6 7 Panorama Nova Mask 7 1 Purpose The Panorama Nova Mask is used with the quick disconnecting LDR to provide compressed air to the users respiratory system 7 2 Construction The Panorama Nova Mask is available in three materials 1 EPDM Ethylene Propylene Dimonomer 2 Silicone 3 Neoprene Mask construction is the same for all materials 7 3 Features The Panorama Nova Mask uses a lens design that features 90 peripheral vision availability The mask utilizes a five point harness for proper sealing Four of the harness points go on the sides of the head and one harness goes over the center of the head A neck strap is also provided for transporting the mask The input connecting section is manufactured so that the incoming air is flushed past the lens and into the respiratory system This system helps prevent fogging of the lens The mask comes standard with a nosecup that also helps reduce fogging takes up dead air space and channels the voice into the speech diaphragm Nosecup usage is required by NIOSH when temperatures are below 32 F Theory of Operation Section Rev 1 August 1996 National Draeger uses a speech diaphragm made from stainless steel stamped with the letter N This material provides excellent sound transmittance and is less susceptible to chemi cal deterior
16. andards To achieve full operational status through authorized maintenance National Draeger can only be liable if pressure reducer is serviced and resealed by National Draeger This is only the case when pressure reducers are fitted with original Dr ger components and sealing caps Drager IV Maintenance Schedules Equipment including tool list Maintenance Schedules Equipment Section IV Rev 1 August 1996 1 1 Maintenance Procedures IMPORTANT The following standards must be met when performing any maintenance procedure Visually inspect and hydrotest all cylinders at a DOT certified hydrotest facility Composite cylinders must be hydrotested every three years metal cylin ders every five years Accurate documentation should be recorded and filed by serial number as each unit is tested or maintained Protection against pathogens is important With Draeger SCBAs all exhaled air vents through the exhalation valve in the facepiece Since no exhaled air contacts the LDV only the facepiece requires disinfecting against pathogens The LDV only needs cleaning annually unless the unit has been subjected to unusual contamina tion Carefully clean disinfect and thoroughly dry contaminated dirty components as necessary Use only Drager Safety Wash for cleaning and Desi EW80 Des for disinfecting baths Immerse and manually agitate components in baths Drager recommends that no form of mec
17. ation The mask is constructed with a double face seal to ensure a good fit over a wide range of facial features One size fits all 7 4 Technical Data Material s EPDM Neoprene Silicone Exhalation Valve Opening 2 4 5 mbar View Area 90 of peripheral vision Lens material s Polycarbonate Plexiglass d PA9O Series Service Manual Theory of Operation Section I Rev 1 August 1996 8 Cylinder and Valve Assembly 8 1 Purpose The PA 90 Series cylinders are used as light weight storage containers for the breathing air To ensure the wearers safety and that the cylinder remains free of contaminants Grade D or better gaseous air as specified by the Compressed Gas Association Commodity Specification for Air G 7 1 ANSI 286 1 must be used in the cylinders 8 2 Features The cylinders use aluminum valves with CGA connectors The valves have safety discs burst discs installed that are designed to prevent over pressurization These discs are designed to rupture at approximately 5 3 the rated service pressure The valves utilize a straight thread design that permits the use of an o ring seal when attaching to a reducer This seal system ensures that the connection between the cylinder and the reducer need only be hand tightened 8 3 Technical Data Pressure Weight SCF Minutes Lbs w Air Liter 4500 30 FG au Ian 51 7 1457 4500 45 FG uu 20 2 uns 74 8 2108 4500 60 FG ou 25 0 u 98 9 2790 N 4500130 KV
18. ce in castellation Following satisfactory assembly carry out leak and functional tests Wn Sc SS S SS Weal L S TIL E Lg I Figure 72 d 10 Disassembly Assembly Section Il Rev 1 August 1996 2 5 Replacing Demand Regulator Hose Tools required 11 mm AF open ended spanner 14 mm AF open ended spanner or 6 adjustable spanner Hold banjo flange across flats using 14 mm AF open ended spanner Grip elbow on hose assembly using 11 mm AF open ended spanner and unscrew elbow hose assembly from banjo counter clock wise Discard disassembled hose Before assembling new hose assembly check that a threaded bore in banjo is clean and undamaged b new O ring is fitted to threaded end of banjo Apply one drop of Loctite 638 P N 3335389 To elbow thread Ensure that Loctite does not enter bore e Screw elbow to banjo and tighten using 14 mm AF spanner to grip banjo and 11 mm AF spanner to grip elbow e Leak test completed assembly Section Ill 1 1 6 I 11 PA 90 Series Service Manual Disassembly Assembly Section Il Rev 1 August 1996 3 Panorama Nova Mask Tools Required 7 mm open end wrench Screwdriver flat tip Diaphragm spanner P N R26817 End crimp pliers 3 1 Changing the Mask Lens Remove lens screws by turning them counter clockwise with a screwdriver while at the same time holding hexagon nuts Carefully loosen both clam
19. cement socket 1 2 drive torque wrench O 50 nm CAUTION Ensure cylinder is completely empty before disassembly Secure cylinder e Insert valve socket over cylinder valve Remove valve from cylinder Installation Replace sealing ring 3 on lower valve section e Torque valve housing to cylinder 80 10 ft Ibs 110 14 nm e Apply pressure and check for leaks vis iy PA 90 Series Service Manual Disassembly Assembly Section Il Rev 1 August 1996 Cylinder Valve Figure 17 PA 90 Series Service Manual I 18 Disassembly Assembly Section Il Rev 1 August 1996 Cylinder Valve Valve Complete Maintenance Kit 4054415 4054416 4054417 Part No 2800 4500 pr S Ce I S O 4 nr arr e RC CC EE ME o Coo I GI E 12 seg Wow Wee S G S Tia eum ae Gud assy E E S T a E e E AA Co oi ame use use e e F oo o T A A AE Gede Il 19 PA 90 Series Service Manual Drager II Testing Troubleshooting Testing Troubleshooting Section III Rev 2 August 1996 1 Testing Troubleshooting 1 1 Test Kit Operations NOTE Before using the Test Kit P N 4052350 the kit must be leak tested M 1 1 1 Leak Test TEST Kir e Connect tubing to low pressure gauge e Close one open end and clamp insert squeeze bulb in other end e Provide pressure 7 to 10 mbar to the gauge and clamp off bulb e Ensure reading does not change in
20. e United 101 Technology Drive States follow these guidelines Pittsburgh PA 15275 Contact National Draegers Technical Service Department at 412 7665527 or 412 788 5525 and ask for a Service Return Authorization SRA Number This number tells our receiving department to forward the package to the service department for repair and also allows our technicians to match repairs to work orders SRA numbers are valid for 30 days from the date they are assigned When you request your SRA number please have the following information handy the purchasers name and address the model number of the instrument to be repaired the serial number of the instrument to be repaired the purchase order number for the repair along with any other applicable information or confirmation including warranty repair period the phone numbers of persons in your company who National Draeger should contact about the product or repairs Place this information inside the shipping package Include a short note inside the package that explains the symptoms or cause of the damage For example if the instrument was immersed in water just before it malfunctioned tell us that Include all necessary options and accessories in the package you are returning Ship the unit in sturdy packaging PA 90 Series Service Manual V 6 Drager VI Service Instruction History
21. e and remove it from the pressure line Remove the copper washer from the pressure line and replace with a new copper washer P N R50457 Screw until tight Using a 13 mm wrench loosen the buddy breather connection and remove Lubricate with Molykote 111 and replace manifold o ring P N 4059265 To reinstall apply a drop of Loctite 222 to the connection threads and tighten Perform a high pressure leak test Section Ill 1 1 3 Il 15 PA 90 Series Service Manual Disassembly Assembly Section II Rev 1 August 1996 5 Cylinder Valve 5 2 Burst Disc Figure 17 Tools Required 5 1 High Pressure Gauge 3 8 socket Torque wrench O 0 nm Tools Required Flat tip screwdriver Cut out 1 2 socket Small square key only on newer gauge covers Philips screwdriver CAUTION Ensure cylinder is completely empty before removing the seal e Remove 3 8 protective cap 10 with socket e Remove copper disk 4 and sealing ring 9 CAUTION Ensure cylinder pressure has been complete y drained before removing e Replace sealing ring 9 Replace burst disk 4 gauge e Apply Loctite 290 to protective cap 10 Remove screws 14 in top of rubber e Install protective cap 10 and torque to protective cap 65 in lbs 7 nm Lift off cap 13 wave washer 12 and protective plastic cover 1 1 Place 1 2 cut out socket on gauge nut NOTE Make sure gauge indicating needle is not damaged Remove gauge 2
22. e on silicone o rings B Adhesives Part Number Loctite 222 4054086 apply to reducer threads prior to tightening ballnose apply to PA 80 Plus valve gauges 4059026 and 4059036 prior to tightening apply to nut 1335022 following adjustment of bypass flow of all lung demand regulators Loctite 290 409408 apply to safety plug 4052098 prior to assembly apply to chest gauge threac ae 242 apply to whistle Tocking nut O RE RE connection NOTE Use adhesive only on fittings noted by National Draeger Excessive or improper use may result in damaged components or reduced performance of apparatus IV 11 PA 90 Series Service Manual Drager V Service Reporting Service Reporting Section V Rev 1 August 1996 1 Service Repotting National Draeger Inc strives to improve the quality of our products at all times One method used to accomplish the highest quality possible is to periodically review the service logs for our devices and determine what if anything needs to be modified or improved to increase the quality of the device As a certi fied service technician for the PA 90 Series your input into our continuous improvement is vital After servicing a unit in the PA 90 Series we ask you to complete the following proce dure 1 Make copies of the attached SCBA Service Log form 2 Complete the form 3 Return the form to the following address National Draeger Inc Attn Technical Service De
23. ed facing outward as shown in Figure 2 16 mm AF open ended spanner e Reassemble whistle in reverse order of 20 mm AF open ended spanner or adjustable dismantling spanner To adjust whistle activation point attach a Hold manifold block using adjustable or 20 fully charged cylinder mm AF open ended spanners and unscrew Attach lung demand regulator whistle assembly from manifold block using 16 mm AF pen ended spanner Open cylinder Close cylinder valve and using the lung demand slowly bleed pressure down to the Refer to Figure 2 e Using 16 mm AF open ended spanner loosen activation point 25 2 of full locknut 6 and unscrew adjusting nut 1 from main body 7 Holding pressure at activation pressure tighten adjusting nut 1 until whistle activates e Remove whistle tube 2 inspect o ring 3 i He T replace if necessary Apply Loctite 242 to lock nut and lock in place by adjusting locking nut 6 e Remove spring 4 from main body e Extract capillary assembly 5 by pushing 2 3 4 4a 5 5a 6 7 through seal 8 in direction of arrow i 3 CAUTION J Ni Capillary Assembly 5 5a is factory set by Drager Do not attempt to adjust Figure 2 Whistle Warning Unit tem No 1 8 1 8 Whistle Complete 4500 88861488 Whistle Complete 2216 Adjusting Nut 3330674 O ring 3330997 Spring 4500 3336141 Spring 2216 3330999 Capillary Assembly 4500 3331018 a Capillary As
24. eel automotive type or highly fire retardant polymeric buckle 2 Theory of Operation Section I Rev 1 August 1998 3 Pressure Reducer 3 4 Technical Data 3 1 Purpose First Stage Reducer Outlet to High Pressure Manifold The purpose is to reduce the cylinder pressure lt 25 Ipm 2900 psi from a maximum 4500 psi down to a medium Medium Pressure 87 130 psi pressure between 87 130 psi while delivering Relief Valve 160 230 psi high flow when needed 3 2 Construction The pressure reducer is a balanced piston type which provides a controlled medium pressure regardless of cylinder pressure It contains a pressure relief valve to prevent over pressuriza tion of the medium pressure chamber It is connected to the cylinder by CGA fittings 3 3 Features High pressure air enters the reducer via a cylinder connector which is fitted with a sintered bronze filter The high pressure air flows through the piston into the reducer body which forms a medium pressure chamber As the air flows into the medium pressure chamber it forces the piston to close against the plunger the medium pressure should read between 87 130 psi On inhalation medium pressure air flows from the medium pressure chamber As the pressure within the chamber is now reduced the spring reopens the piston allowing the cycle to be repeated An optional pigtail with a female Cejn connector is available When provided it permits both buddy breathing or the con
25. f retaining nut Crimp Type Clamp Remove clamping band and discard band Figure 16 Remove plastic protection band and gusset Lift connector from mask body insert new connector such that the center marks align with the mold marks on the center of mask body Install plastic band around connector and insert gusset under lens frame and on top of plastic band e Place a new crimp style band over connector and plastic band and using a set of end crimps crimp band tightly NOTE Ensure the mask body is not punctured at any time during this procedure P Mask Maintenance Kit Kit nowe o d o Disc Exhalation Valve R50073 O ring Speech Diaphragm T10549 Diaphragm Speech SS Mask R51102 HH i b l lt gt 1 gt l i I gt gt 3 I LD 00 Al hMH DOII I h hlww Lboo gt i ee PA 90 Series Service Manual ll 14 4 Disassembly Assembly Section Il Rev 1 August 1996 Backplate Pneumatic Lines Using a 3 mm allen key loosen and remove the ballnose o ring P N 4054431 Replace o ring and tighten allen screw until tight Using a 17 mm wrench loosen the medium pressure line Remove and replace rubber sealing ring P N R16456 Tighten until snug Using a 17 mm wrench loosen the pressure line assembly at the reducer remove the pressure line assembly and copper washer and replace with the new copper washer PN D15438 Screw until tight Using a 17 mm and 14 mm wrench loosen the pressure gaug
26. for the following reasons a Ordering error b Shipping error c Duplicate order d Damaged merchandise e Processing error An RGA number must be acquired from National Draeger s Customer Service Department before returning and shipping any goods 2 The following information is required by our Customer Service Department to issue an RGA a Customer s company name b Customer contact name and telephone number C Customer s purchase order number d Part number and quantity of item being returned 8 Reason for return 8 After receiving an RGA number please reference that number on the outside of the package being returned to National Draeger 4 All discrepancies on an order must be reported to National Draeger within ten days of receipt of that order 5 0n items ordered incorrectly or no longer needed by the customer a minimum restocking charge of 15 or 50 00 whichever is greater will be assessed 6 An RGA will not be issued if the value of the item being returned is less than 60 00 at invoiced price unless National Draeger is in error 5 Service Reporting Section V Rev 1 August 1996 PA 90 Series Service Manual Service Reporting Section V Rev 1 August 1996 Ti National Draegers Product Send the package to Service In The U S A Technical Service Department SRAR If it becomes necessary to return an instrument National Draeger Inc to National Draeger for repair in th
27. hanical electrical or ultrasonic agitation be used NOTE If lung demand regulator assemblies are regularly immersed in solutions Drager recommends that banjo O rings are re greased after 100 clean and disinfect cycles by a proper y trained technician Level technician using an SCBA Test Kit i PA 90 Series Service Manual IV SAFETY NOTE Refer to manufacturers usage instructions when using cleaning and disinfecting agents It is important to pay attention to the concentration and reaction times Do not use organic solvents such as acetone alcohol white spirit trichloroethylene or similar If required Drager recommends the following Cleaning Draeger Safety Wash Do not exceed a temperature of 86 F Disinfecting Desi EW80 Des Do not exceed a temperature of 86 F Details of cleaning and disinfecting agents are available from Drager on request Rinsing and Drying Remove cleaning and disinfecting solutions by rinsing in clean water followed by drying Do not exceed a temperature of 140 F when drying components 1 1 1 Facepiece e Disengage LDV from facepiece e Lit off the exhalation valve protective cover from the facepiece e Examine the exhalation valve for visible damage and ensure that the valve is free from dirt or debris Check the ease of movement of the exhalation valve and ensure it is not sticking to the valve seat e Check the headstraps body nosecup and speech dia
28. i ANOLE ure may rise in one min a maximu wing the settlin e may rise another 10 psi in one minute Close the cylinder valve Open the relief valve on the gauge and bleed the pressure from the unit Close the gauge relief valve Disconnect gauge and reconnect the LDV to the medium pressure line Testing Troubleshooting Section Il Rev 2 August 1996 1 1 5 Whistle Activation e Return LDV to donning mode and disconnect from tester e Switch LDV to donning mode Close cylinder valve amp SP da vale 1 1 8 LDV Negative Pressure Leak Test Listen for chiro and close cylinder valve Test LDV for Leak e Cover the LDV connector with the palm of Ps your hand and depress the center of the blue Disconnect LDV from unit Sc BA SN Connect LDV to test kit using connector e Slowly move your palm away from the adapter and hose Fes to allow a small amount of air to Block hose inlet to LDV se STOPPER e Observe the chest gauge to determine the e Attach Te an aa create negative whistle activation point pressure 7 to 10 mbar Pe e Ensure pressure does not drop more than 1 1 6 LDV Positive Pressure Leak Test 05 mbar in 30 second Test LDV for Leakage e Disconnect test kit and attach LDV to unit e With LDV in donning mode open cylinder 1 1 9 LDV Bypass Function valve e Connect LDV to test kit using connector Test Function of the are Control adapter and hose magnabel ie gavs Umbar Ensure the LDV is disconnected from
29. isassembly Assembly t Pneumatic Arrangement Maintenance 2 1 1 Replacing Pressure Gauge reer 2 1 2 Disassembly Assembly of Whistle Warning Unit sans 3 1 8 Replacing High Pressure Hose 4 1 4 Replacing Medium Pressure Hose 5 2 Demand Regulator Maintenance 6 2 1 Replacing Diaphragm drurin 6 2 2 Replacing Balanced Piston Unit 7 2 3 Replacing Refitting PP Arm Return SPNNG renier 8 2 4 Replacing Balanced Piston Springs 9 2 5 Replacing Demand Regulator Hose 11 3 Panorama Nova Mask 12 3 1 Changing the Mask Lens eesse 12 3 2 Changing the Exhalation Valve 13 3 3 Changing the Speech Diaphragm 13 3 4 Changing the Connector 14 4 Backplate Pneumatic Lines s 15 5 Cylinder Valve use 16 5 1 High Pressure Gauge s s s 16 5 2 B rst D SC Ans a 16 5 3 Handwheel wesc 17 5 4 Valve Removal menmen 17 iii PA 90 Series Service Manual General Section i Rev 1 August 1996 lil Testing Troubleshooting 1 Testing Troubleshooting sus 1 1 Test Kit Operations sammen 1 1 1 Leak Test FR RA N R IRR RIRI 1 1 2 High Pressure Cylinder Test 1 1 3 High Pressure Leak Test ss 2 1 1 4 Medium Pressure Test 1 1 5 Whistle Activation 11 68 LDV Positive Pressure Leak TESE e nan A sie r v ni 11 7 LDV Static Positive Pressure Tests scie dre ete 3 1 1 8 LDV Negative Pressure Leak Test Tassie Scent CU 3 1
30. jector pipe is secure Do not over tighten Carefully turn connector counterclockwise until first space in castellations on connector aligns with retaining screw hole Refit retaining screw 1 Figure 6 ensuring it enters aligned space in castellation If fitted check action of positive pressure mechanism i e press reset lever 4 Figure 7 checking that balanced piston spring loaded lever lifts and holds in position after releasing reset lever Gently press end of balanced piston lever to check lever releases under spring load Repeat Press reset lever and locate diaphragm 2 Figure 4 onto end of balanced piston lever insert outer bead of diaphragm into locating groove in demand regulator body Ensure correct orientation Figure 5 Moisten lip of bayonet cap with water refit bayonet cap 3 Figure 4 and tighten with peg scanner P N 16 28089 Check position of diaphragm Figure 5 Note alignment of arrows Press reset lever 4 Figure 7 to lift dia phragm towards bayonet cap release reset lever checking that diaphragm remains in position Gently press center of diaphragm to ensure that it releases and retracts Repeat action Fit rubber cover 4 Figure 4 Press lever 4 Figure 7 to check action and ensure lever returns easily after releasing PA 90 Series Service Manual If lever does not retract easily remove screw 1 Figure 6 rotate connector counterclock wise to next spa
31. lates have a shock absorbing rubber bumper on the base The backplate also has convenient carrying handles on both sides and is highly chemically resistant The AirBoss backplate is anti static PA 90 Series Service Manual I lnd 2 Harness 2 1 Purpose The harness is designed to be easily and quickly donned and adjusted to fit each individual 2 2 Construction The ProAir harness is composed of polyester webbing The AirBoss harness webbing is composed of a Keviar Nomex PBI composite material This material has unparalleled strength fire retardation and wear resistance It can be easily removed and washed if necessary for decontamination Washing will not affect the above mentioned characteristics 2 3 Features The ProAir is fully adjustable for both the shoulder straps and waist strap It can be easily removed from the backplate for cleaning if necessary The ProAir has a highly fire retardant polymeric buckle The AirBoss is fully adjustable for both the shoulder straps and waist strap The AirBoss harness has a pull forward waist belt adjustment and a waist pad to transfer weight away from the shoulders for additional support and comfort It also comes equipped with shoulder pads A lung demand regulator LDR holder is provided on the waist belt for convenient stowage when not in use The entire pneumatic system can be readily removed for decontamination The waist belt buckle is either a push button stainless st
32. ls which are available for maintenance of our SCBAs Please refer to this chart when determining which tools are needed for your specific SCBA 1 3 1 Maintenance Support Equipment Operational Level I Level Il 4052512 Adjustable Wrench l I 78 a 4052024 SCBA Tool Kit Use on al respiratory equipment includes the following 1628084A Lung Demand Spanner All Lung Demands R26817 Face Mask Spanner All Panorama Masks R21402 Seal Ring Lifters Use for all o rings 4059039 3 mm Allen Key All Ballnose o rings 1627244 A Flat Tip Screvvdriver 1 4 Blade Width 4053480 Wrench 7 x 6 mm All Equipment 4053479 Wrench 10 x 8 mm All Equipment 4053478 Wrench 12x 12 mm All Equipment 4053481 Wrench 14x 15 mm All Equipment 4053482 Wrench 17x 19 mm All Equipment 4053483 Needle Nose Pliers All Equipment 4053705 Reg Phillips Tip Driver All Equipment 4052511 Ring Spreaders Plus 90 LDR 1618946 2 mm Allen Key Plus 90 LDR 4054839 16 mm wrench Plus 90 Whistle 4053476 Jewelers Screwdriver Plus 90 LDR 4054838 Small Phillips Tip Driver Pius 90 LDR PA 90 Series Service Manual M 8 2 Maintenance Schedules Equipment Section IV Rev 2 August 1996 PA 80 Plus 90 Service Tool List Comments 4054142 Torque Wrench Cyl Valve Replacement O 00 ft lbs 40525 14 Torque Wrench Burst Disk Removal O 50 in ibs 4052530 1 2 Drive Socket Cyl Valve Replacement 4052532 Cut Out 1 2 Socket Valve Gauge Removal 40525 13 3 8 Socket
33. ly lift lever stop to opposite side of rib on de mand regulator body Check assembly by pressing lever 4 Figure 7 Lever should return easily Springs Unhook each spring loop from location on balanced piston lever Unhook each spring loop from location pins on block Refit new springs to pins on block NOTE Use fine point tweezers P N 3333326 Figure 11 to stretch spring to locate on lever arm Hook each spring loop to location arm on balanced piston lever Insert balanced piston unit into demand regulator body ensuring correct location onto internal location boss Figure 11 Ensure banjo seals have fresh grease ap plied Carefully insert banjo 2 Figure 8 into bore of demand regulator body and align through bore in balanced piston block i e reverse Figure 8 Refit washer 3 and new circlip 2 Figure 7 NOTE Check banjo swivels freely in assembly Insert bypass assembly 1 Figure 7 and snug smalls screws Ensure bypass operates smoothly Replace O ring over small screws Orientate and hold demand regulator with outlet port in vertical position Insert anti injector pipe into port while ensuring positive and correct location Figure 12 I 9 PA 90 Series Service Manual Disassembly Assembly Section Il Rev 1 August 1996 Locate and screw connector into demand regulator body NOTE Replace o ring prior to fitting Tighten push in connector hand tight until anti in
34. nection of an external breathing air line The pigtail is supported on the left side of the waist belt I 3 PA 90 Series Service Manual Buddy Breather _ Combi Connection AD MR 90 Theory of Operation Section I Rev 1 August 1996 4 Chest Mounted Whistle Warning Unit 4 1 Purpose The purpose is to audibly alert the user when the air supply reaches approximately 25 of full cylinder capacity 4 2 Construction The high pressure whistle warning unit is fitted to a manifold block The manifold block is fitted to the gauge line The whistle is located on the left shoulder harness close to the ear making it easier to hear the whistle 4 3 Technical Data Mean Flow Rate 2 Ipm PA 90 Series Service Manual I Sealing ring Sealing ring Figure 1 Manifold Theory of Operation Section Rev 1 August 1996 5 Chest Gauge 5 1 Purpose The chest gauge allows the wearer to monitor the cylinder pressure at all times 5 2 Construction The chest gauge is a Bourdon type with a heavy duty stainless steel case 5 3 Features The chest gauge has a large dial face for easy readability and luminous markings for visibility in low light conditions The gauge is attached to the chest manifold I 5 PA 90 Series Service Manual Theory of Operation Section Rev 1 August 1996 Lung Demand Regulator Retaining screw Plugin connection Retaining cap Silicon dia
35. ng washer 6 Discard disassembled hose To assemble new hose reverse the above procedure NOTE Fit new copper washer 3 and copper sealing ring 6 Figure 3 Tighten hose to pressure reducer using torque spanner Tighten to 20nm Ensure correct orientation of gauge when tightening manifold block to new hose Note orientation as shown in Figure 3 Figure 3 Disassembly Assembly Section H Rev 1 August 1996 1 4 Replacing Medium Pressure Hose Tools required 10 mm AF open ended spanner or 6 adjustable spanner 5 mm hexagon socket key Holding tool P N R27986 17 mm AF open ended spanner e Unfasten hose loops on shoulder pads and backplate to release hoses NOTE For the ProAir cut remove and replace re taining ties e Using 10 mm AF spanner and 5 mm hexagon socket key unscrew hexagon locknut on reducer securing bracket remove socket head screw and washers to release pressure reducer e Using 10 mm AF spanner remove nut from end of reducer mounting pin Remove mounting pin from pressure reducer along with spacer and plastic sleeve from hole in mounting pin e Grip pressure reducer holding tool in vice and screw reducer handwheel into holding tool e Unscrew medium pressure hose 12 from pressure reducer using 17 mm AF open ended spanner and remgve sealing washer 4 C A Z4S1 NOTE This procedure is slightly different on the ProAir The medium pressure line is a
36. o supplementary supply Demand valve fails to switch to positive pressure mode Connection o ring Diaphragm damaged Banjo o rings leaking Balanced piston unit leaking Spring s too strong Spring s too weak Bent damaged Balanced piston lever Bentidamaged Balanced piston Lever Bentidamaged switch off wire form Replace Replace Replace complete balanced piston unit Replace springs Replace springs Replace complete balanced piston unit Replace complete balanced piston unit Facepiece Inward leak Facepiece will not hold maintain positive pressure Exhalation resistance too hig Unable to maintain headstrap adjustment Face seals leaking Facepiece perforated pin holes cracking Loose connections clamp Exhalation valve leaking As above Weak exhalation valve spring Exhalation Spring too strong Strap ra chets worn Buckle rollers reversed i e incorrectly fitted Il 6 PA 90 Series Service Manual inspect for damage Replace if necessary Tighten connections replace exhalation valve disc rubber Inspect seat in front port for damage As above Replace spring Replace spring Replace headstrap Assemble correctly IMPORTANT INFORMATION Pressure reducers of certified apparatus are sealed by National Draeger If original seal cap has been broken or removed apparatus is not guaranteed as being operational in accordance with approval st
37. one piece unit into the LDR Discard disassembled hose To assemble new hose reverse above instruc tions NOTE Fit new sealing washer 4 Figure 3 Il 5 PA 90 Series Service Manual Disassembly Assembly Section II Rev 1 August 1996 2 Demand Regulator 2 3 4 Maintenance NOTE Before starting disassembly disconnect demand regulator from apparatus Tools Required Peg spanner P N 1628089 2 1 Replacing Diaphragm Figure 4 Remove rubber cover 4 and using peg Figure 4 spanner P N 1628089 unscrew bayonet cap 3 Depress donning lever 6 Carefully remove diaphragm 2 by unhooking it from its central location on lever of balanced piston assembly Relocate new diaphragm onto balanced piston lever inserting outer bead of diaphragm into locating groove in demand regulator body 1 For correct orientation see Figure 5 Moisten lip of bayonet cap with water refit bayonet cap 3 and tighten with peg spanner P N 1828089 Check diaphragm position Figure 5 Note alignment of arrows Press reset lever 6 positive pressure type only to lift diaphragm towards bayonet cap release reset lever and check that diaphragm has remained in position Fit rubber cover 4 Figure 5 Carry out leak and functional tests PA 90 Series Service Manual I 6 2 2 Replacing Balanced Piston Unit NOTE Balanced piston unit is factory set by Drager do not attempt to adjust or disman
38. partment 101 Technology Drive Pittsburgh PA 15275 Upon receipt of the log form we will enter the data into our service database along with the data from our internal service depart ment This will ensure that we have a complete understanding of the service history leading to improvements in design durability or robustness By actively partici pating in this effort you are helping us to improve our products for your continued satisfaction PA 90 Series Service Manual V 2 Service Repotting Section V Rev 1 August 1996 2 SCBA Service Log Unit Serial Number Problem or Part Replaced Sub Assembly s Serial Corrective Action Number or Lot Number Please mail or fax a copy of this completed form for each SCBA repaired to National Draeger Inc Attn Technical Service Department 101 Technology Drive Pittsburgh PA 15275 Fax 412 787 2207 V 3 PA 90 Series Service Manual Service Reporting Section V Rev 1 August 1996 3 Terms of Payment 1 discount within ten 10 days after invoice date contingent upon credit approval Net 30 days after invoice date For payments later than 30 days a finance 4 charge is applied at 1 1 2 per month Return Goods Policy A Return Goods Authorization RGA must be issued by National Draeger prior to any materials being returned Contact National Draegers customer service department for necessary authorization No materials can be returned
39. phragm LDV cover Balanced piton asembly N QC PE gi N N ori NG UN T Medium pressure banjo sealing rings NN ASS d NN CLAS ANN SES NES paw N NAI SIN LDV housing Sealing ring Sealing ring Figure 2 PA 90 Series Service Manual I 6 q Theory of Operation 6 Lung Demand Regulator 6 1 Purpose The lung demand regulator has two main functions 1 To provide the air demanded by the respira tory system 2 To always provide a positive pressure to the mask interior 6 2 Features LW The lung demand regulator LDR has automatic first breath activation to positive pressure The bypass control on the right side of the housing can be depressed and locked in position to provide a constant flow of air The donning lever is also on the right side The lung demand incorporates a simple effective push in connection to the face mask port and is sealed by a silicone o ring 6 3 Technical Data Input pressure 87 130 psi output flow 500 Ipm Bypass flow range 80 130 Ipm Static Positive Pressure 1 3 75 mbar Positive Pressure Activation a 5 mbar 7 Section Rev 2 August 1996 PA 90 Series Service Manual Theory of Operation Section Rev 1 August 1996 Panorama Nova Mask Polycarbonate plexiglass lens Check valve Speech diaphragm O ring Ridge and spring assembly Exhalation valve SAUT DRASS L
40. phragm There should be no damage or signs of degradation 2 Maintenance Schedules Equipment NOTE Wear suitable eye protection Clean and disinfect all components of the facepiece 1 Immerse and manually agitate facepiece in Drager Safety Wash Refer to Drager Safety Wash instructions 2 After cleaning rinse components in clean water 3 Immerse and manually agitate facepiece in Desi EW80 Des Refer to Desi EW80 Des instructions 4 After disinfection rinse components in clean water 5 Dry at temperature less than 140 F 6 During drying avoid accumulation of water in the exhalation valve housing Improper rinsing and drying can result in sticking or leaking of the exhalation valve 7 Reinstall valve 1 1 2 Lung Demand Valve LDV protective cover over exhalation It is important to follow these instructions to internally clean and disinfect the lung demand regulator Refer to Figure 1 1 Press reset lever Figure 1 6 of lung demand regulator Do not press center of rubber cover Figure 1 4 while pressing reset lever or force lever against stop 2 Remove rubber cover Figure 1 4 Using plate spanner P N R26817 unscrew bayonet cap Figure 1 3 3 Carefully unhook diaphragm Figure 1 2 from lever of balanced piston lever Section IV Rev 1 August 1996 Figure 1 IV 3 PA 90 Series Service Manual Maintenance Schedules Equipment Section IV Rev 1 Aug
41. ping frame halves if necessary by pushing the blade of screw driver between the clamping pins and remove them e Remove lens for reconditioning or replace ment e First insert new lens in the top of retaining f area d The center marks on the lens must coincide at the top and bottom with corresponding center marks on lens holder Thoroughly moisten the outside of lens Fame center point retaining area and the inside of lens frame e g with soapy water Place the frames over the lens retaining area Body center molding Take care to align the center marks of the lens frame with the center mold marking of the body Bring the two frames upper and lower as close as possible Lens center line Screw set screws into hexagon nut v Hold hexagon nut and tighten set screws until the protruding end of screw is flush with the e lower edge of hexagon nut Figure 13 f PA 90 Series Service Manual I 12 3 2 Changing the Exhalation Valve e Remove plastic cap from connector e Slide bridge assembly to one side Take it and spring out of the connector Remove valve discfrom guide and insert new one Check opening pressure min 45 mbar If it is not correct install a new spring into bridge 3 3 Changing the Speech Diaphragm e Remove nosecup unscrew threaded ring by turning it counterclockwise with wrench R26617 e Lightly tap face of mask until speech dia phragm falls out Check the condition of the
42. r for Disease Control NIOSH National Institute tor Ocauvational Safety and Haalth Both the ProAir and the AirBoss are approved by NIOSH MSHA gold label in accordance with the code of Federal Regulations Title 30 Chapter 11 In addition the AirBoss is certified by the Safety Equipment Institute red label as meeting the requirements of NFPA 1981 Standard for Open Circuit Self Contained Breathing Apparatus for Fire Fighters 1992 ed i PA 90 Series Service Manual General Section i Rev 1 August 1996 Important Information 1 The ProAir and AirBoss are approved by NIOSHIMSHA and the AirBoss meets NFPA standards Any modifications changes or deviations from the documentation contained herewith will void the approval and may cause a Safety hazard Contact National Draeger for additional information concerning approval requiremen ts 2 This unit is intended for those purposes specified in the operating manual Any deviations are not authorized 3 Only original National Draeger replacement parts may be used in the maintenance and servicing of this unit Deviation from this shall void any and all warranties and approvals 4 All repairs to be accomplished by a National Draeger certified Level Il technician 5 Authorized repair facilities and their personnel shall assume all responsibility for timely and reliable repair actions 6 All governing specifications and regulations must be observed in the
43. s defined in operating manual Bypass flow and static test per manufacturer s instructions ung Demand Clean and disinfect as necessary Regulator ressure Reducer Medium pressure check aa Replace CGA connector o ring I gt ylinder Charge to correct pressure 0 Charged pressure check Check test date stamped on cylinder Cylinder pressure test according to national standards Recertification gt ylinder Valve Basic overhaul as necessary or at time of cylinder recertification NOTES Maintenance procedures are subject to recommended or required laws or standards from the following agencies NIOSH OSHA NFPA ANSI In addi tion state or local agencies may have other requirements It is the responsibility of SCBA users to determine which of these standards apply in their jurisdiction This periodic maintenance schedule is based on normal usage and wear Heavy usage use where harmful chemicals are present or damage may require more frequent service Accurate documentation should be recorded as each unit is tested and maintained Repairs or replacement of parts shall be performed only by National Draeger certified technicians Please contact National Draeger Service if there are further questions Section IV Rev 1 August 1996 IV 7 PA 90 Series Service Manual Maintenance Schedules Equipment Section IV Rev 1 August 1996 1 3 Maintenance Equipment The following is a list of Level and Il too
44. sembly 2216 3336 146 Locknut 3330675 Main Body 3330673 Seal 3331696 I 3 PA 90 Series Service Manua Disassembly Assembly Section II Rev 1 August 1996 1 3 Replacing High Pressure Tools Hose required 10 mm AF open ended or 6 adjustable spanner 5 mm hexagon socket key Holding tool P N R27986 17 mm AF open ended spanner 20 mm open ended spanner Torque spanner PIN R51 338 17 mm open ended socket PIN R51 334 Unfasten hose loop on shoulder pads and backplate to release hoses NOTE For the ProAir cut remove and replace retaining ties Using 10 mm AF spanner and 5 mm hexagon socket key unscrew hexagon locknut on reducer securing bracket remove socket head screw and washers to release pressure reducer Using 10 mm AF spanner remove nut from end of reducer mounting pin Remove mounting pin from pressure reducer along with spacer and plastic sleeve from hole in mounting pin Grip pressure reducer holding tool in vice and screw reducer handwheel into holding tool Unscrew pressure gauge hose HP from pressure reducer using 17 mm AF open ended spanner and remove copper washer 3 pisyan PA 90 Series Service Manual I 4 Pull back plastic sleeve 5 if fitted and hold hexagon using 17 mm AF open ended spanner Using 20 mm AF open ended spanner on manifold block unscrew hose from block 7 and remove seali
45. tie this unit Should problems occur other than requirement to replace springs on positive pressure type units units to be replaced with factory set unit new To replace complete balanced piston unit or springs follow these instructions Tools required Peg spanner P N 1628089 Fine point tweezers P N 3333326 Fine point circlip pliers Remove rubber cover 4 and using peg spanner P N 3 Figure 4 1828089 unscrew bayonet cap Depress reset lever 6 Figure 4 4 positive pressure type only e Carefully remove diaphragm 2 Figure 4 by unhooking it from its central location on lever of balanced piston assembly e Using Posi drive screwdriver ing screw 1 Figure 6 remove a Unscrew push in connector 5 Figure retain 4 counterclockwise from demand regulator body b Using peg spanner P N 16 23089 unscrew Screw in connector counterclockwise demand regulator body NOTE DO NOT attempt to remove push in from connector unless screw 1 Figure 6 is removed from demand regulator body I 7 Disassembly Assembly Section II Rev 1 August 1996 PS S C 17771 14 a VILLA IN yi G SNE NN sh D N Op m U es L Figure 6 PA 90 Series Service Manual Disassembly Assembly Section Il Rev 1 August 1996 e Remove O ring 5 from bypass button s Use a small screwdriver and remove the two small scre
46. ust 1996 NOTE Wear suitable eye protection 4 Assemble rubber cover Figure 1 4 to demand valve body to protect balanced piston lever 5 If required immerse and manually agitate lung demand regulator in Drager Safety Wash Refer to Drager Safety Wash instructions 6 After cleaning rinse in clean water 7 If required immerse and manually agitate Figure 2 lung demand regulator in Desi EW80 Des Refer to Desi EW80 Des instructions 8 After disinfection remove rubber cover Figure 1 4 and rinse components in clean water Take care not to damage balanced piston lever 9 Press reset lever of lung demand regulator Turn ON air supply 10 Gently depress balance piston lever blowing out fluid residue 11 Disconnect from air supply dry components and if necessary remove excess fluid 12 After drying insert balanced piston lever into hole in center boss of diaphragm Figure 1 2 chamfered side of boss towards lever and carefully locate outer bead of diaphragm into groove in demand valve body note orientation Figure 2 13 Moisten lip of bayonet cap Figure 1 3 with clean water Re fit bayonet cap NOTE Re check orientation of diaphragm IMPORTANT Peer POUSE A A negative pressure leak test must be 14 Assemble rubber cover Figure 1 4 performed by a properly trained techni cian Level I technician using a SCBA Test Kit Refer to published service manual for details 15
47. v 2 August 1996 Drager UNIT SERIAL HIGH PRESSURE REGULATOR SERIAL LDV SERIAL MASK SERIAL SCBA TEST DATA LOG HYDRO DATE DATE we T HIGH PRESSURE LEAK TEST 200 psil min PA 25 LDV NEGATIVE PRESSURE LEAK TEST lt 0 5 mbar 30 seconds PA 2 PRESSE L fess O i 4 PRESSURE LEAK TEST PASS c 1 mbar 1 min ASS POSITIVE PRESSURE ACTIVATION PASS z 5 mbar rie STATIC POSITIVE PRESSURE 1 0 2 75 mbar FUNCTION OF See NOTE BYPASS VALVE Section 1 1 9 80 130 LPM 2 8 4 5 SCFM WARNING WHISTLE ACTIVATION 25 2 of full cylin 87 130 psi 6 9bar MASK LEAK TEST lt 1 mbarfi min EXHALATION VALVE OPENING 2 45 mbar Tl 5 PA 90 Series Service Manual Testing Troubleshooting Section Ill Rev 1 August 1996 Fault Cause Remedy Pressure Reducer Audible leak from pressure reducer High low medium pressure Continuous creep medium pressure Above 10 psi in one minute Pressure relief valve operates indicating reducer failure Reducer out of tolerance High pressure leak Replace complete reducer Replace complete reducer Replace complete reducer Lung Demand Regulator Inward outward leak Static pressure test Demand valve in test Mode i e non positive pressure mode Pressure rise Demand valve in positive pressure mode high static Demand valve in positive pressure mode low static N
48. ws 6 located on the bypass button 1 and remove the bypassassembly Figure 7 e Remove circip 2 using finepoint circlip pliers and remove washer 3 Figure 7 e Push end of banjo 2 and extract banjo hose assembly 2 from demand regulator Figure 6 NOTE Ensure o ring 1 is fitted to banjo e Remove balanced piston unit 1 from de mand regulator body 2 Figure 9 NOTE Remove old grease using a lint free cloth from circumference of banjo and remove seals It is recommended that all seals be replaced Refit new seals and apply thin film of Molykote 111 grease 2 3 Replacing Refitting PP Arm Return Spring e Ensure PP arm 1 is in position with arm pointing as shown in Figure 10 e Insert return spring 2 Figure 10 over PP arm 1 and into housing recess with radial arm of spring correctly located in radial slot in demand regulator body Figure 9 e Hook axial arm of spring into radial slot in lever 4 Figure 7 but not onto hexagon l 1 NOTE Using finger inside demand regulator body press end of PP arm to hold in position and prevent axial movement e Carefully rotate lever arm counterclockwise against spring tension until first hexagon flat aligns with hexagon on PP arm and press lever onto PP arm Figure 10 PA 90 Series Service Manual I 8 2 4 Replacing Balanced Piston Disassembly Assembly Section Il Rev 1 August 1996 Rotate lever counterclockwise and careful
Download Pdf Manuals
Related Search