Aqua Lung SEA MK Operations Instructions Page 1

MRS IIIMobile Refi ll System for the Aqua Lung SEA(Survival Egress Air)October, 2011Operation and Maintenance Manual

6.2.1. NOTE-THIS INSPECTION SHOULD CONFORM TO COMPRESSED GAS ASSOCIATION PAMPHLET C-6.2 VISUAL INSPECTION OF FIBER

7.2. Hold one of the fi ll hoses (HOS1) fi rmly and point the opening away from people (fi gure 12).7.2.1. WARNING — AIM THE HOSE AWAY FROM YOURSELF AND

MRS III MAINTENANCE Scheduled Service (1-year and 5-year) 9.0 AFTER 1 YEAR, AND EVERY YEAR THEREAFTER...9.1. PARTS REQUIRED: 1-year overhaul kit (

9.7. Lubricate the new seals generously with an approved non-toxic O-ring lubricant (Christo-lube), and slip the new seal on in the proper orde

10.0 REPLACING THE SEAT IN THE BLEEDER VALVE (712):10.1. Unscrew the knob (712KNOB) and turn it over. The knob will pull through the bleeder keeper

11.3.1. WARNING: IF THESE DO NOT COME LOOSE WITH FIRM HAND STRENGTH, THERE MAY STILL BE AIR PRESSURE IN THE SYSTEM. VERIFY THAT ALL PRESSURE IS REM

12.0 CYLINDER INSPECTION GUIDELINES12.1 Cuts, Scuffs and Scratches 12.1.1 Usually these are confi ned to clear coat and are less than .005” deep

14.1.1. CAUTION: DO NOT CONTAMINATE THE MRS III BY USING CALIBRATION APPARATUS THAT WILL PUT OIL INTO THE SYSTEM.14.1.2 To calibrate the gauge

14.3. The rear connection on the gauge is ¼” MNPT and will have a standard industrial 1/8” tube high-pressure compression fi tting (PRS10). The calib

15.4. After the 5-Year Maintenance is completed return the unit to service.15.5. Fill valve (YVA3010A).15.5.1. With valve open, remove the plastic c

Change No. Date Title or Description Change Made By01-2010 5/2010 Add pages 35 & 36, Case dimensions, MRSIII weights, empty & fullBAS02-2010

15.5.7. The only other replaceable part in the valve body is the copper gasket (YVAKIT-5) that seals the bonnet nut to the body. Use the O-ring pick

15.6.3.2.1. NOTE! DO ALL WORK ON A CLEAN WORK SURFACE AS IT IS IMPORTANT THAT THIS VALVE BE KEPT CLEAN. 15.6.3.2.2. NOTE! REMOVI

15.6.3.7. Remove the safety disc plug (VAL1-9) by using a 3/8” wrench or socket and turning counterclockwise until it is out (fi gure 38). Reinstal

15.6.4.3. If the valve is still in the cylinder the only method you can use is to wipe with a lint free cloth (damp o

fi gure 4316.1.1. Place the unit face down on a clean work surface that has been covered with a pad or towel (to protect the unit from scratches on th

page 19the spring cap and turn it so that the inside portion is facing up. You will see an O-ring (1120KIT-3) and a smaller hex opening(1120KIT-2).

page 20fi gure 47 Push handle latch (white arrow) to the right, to raise or lower the case handle.17.0 MRS III Case (1650)17.1 The case for the MRS

TROUBLE SHOOTING CHART FOR THE MRS IIIpage 21PROBLEM ACTIONLeaks at connection to EBS.O-ring at fi ll connection is damaged or missing. Replace O-rin

page 22Leak at fi tting Inspect fi tting for damage, if damaged replace fi tting.If fi tting is loose: Pipe Thread fi ttings must be removed, have the Tefl

page 23Supply cylinder is damagedInspect per CGA Pamphlet C-6.2. Replace if damage exceeds allowable limits.MRS III case is damaged Replace case.MRS

TABLE OF CONTENTSSECTION 1...

Illustrated PartsBreakdownMobile Refi ll System III (100701)FRONT OF UNITpage 24

SIDE VIEWpage 25

page 26END VIEW** FRM1 Items available as assembly only.ITEM REQ ’D PART NO.AQUALUNGPART NO.DESCRIPTION01 1 1650 103201 CASE, PELICAN WITH WHEELS02 1

page 27ITEM REQ’D PART NO. AQUALUNG PART NO.DESCRIPTION21 4 MRS3-ASY 103226 CONNECTOR, 1/8” TUBE X ¼” FNPT, SST22 2 PRS2 103227 CONNECTOR, ¼” MNPT X 1

page 28ITEM PART NO. AQUALUNG PART NO.DESCRIPTION59 1 NUT1 103272 NUT, MRSIII, 1.25-12, 1.5 HEX60 1 PRS6 103273 HANDWHEEL ASSEMBLY, DIN X ¼” MNPT61 1

page 29 Fill Valve* YVAKNOB consists of #8 & #11.FILL VALVE ASSEMBLY (YVA3010A)* These items are contained in the YVA KIT, and cannot be purch

SUPPLY CYLINDER VALVE (#VAL1 or #103276)page 301411039458762GAUGE ASSEMBLY16182217151915SUPPLY CYLINDER VALVE OVERHAUL KIT (VAL1KIT)1271016813112120

+ Part of valve rebuild kit. Parts cannot be bought separately.SUPPLY CYLINDER VALVEPARTS BREAKDOWNpage 31ITEM REQ’D PART NO. AQUALUNG PART NO.DESCR

SEA FILL ADAPTER (PRS-21)ADAPTER OVERHAUL KIT (PRS21KIT)page 3212436253533226PRS21KITITEM REQ’D PART NO. AQUALUNG PART NO.DESCRIPTIONPRS21KIT 10078

page 33ONE-YEAR MAINTENANCE KIT MRSKIT1 (AQUA LUNG 100703)FIVE-YEAR MAINTENANCE KIT MRSKIT2 (AQUA LUNG 100704)ITEM REQ’D PART NO AQUALUNGPART NO

FIGURE 22, REMOVE TOP PLATE ...8 FIGURE 23, INSPECT FOAM PADDING .

page 34CHECK VALVE OVERHAUL (#955SSMM or #100781)+** Part of valve rebuild kit. Parts cannot be bought separately.ITEM REQ’D PART NO. DESCRIPTION1 1

page 35ITEM REQ’D PART NO. AQUALUNG PART NO.DESCRIPTIONPRS61 1 PRS6-1 820040 O-RING2 1 PRS6-3 106058 STEM (Cannot be purchased separately.)3 1 PRS6-2

PRESET REGULATOR (1120)123456**Items 2, 3, and 4 are not available separately. They are included in overhaul kit 1120KIT, shown below.432PRESET REG

MRS III FLOW DIAGRAMpage 37

page 38

page 39

IIIWARNINGS, CAUTIONS, & NOTESPay special attention to information provided in warnings, cautions, and notes that are accompanied by one of these

1.0 DESCRIPTION OF UNIT: The MRS III is designed to refi ll the Aqua Lung Survival Egress Air (SEA) LV, MK1.5, MK2, MK2.5. It has an internal supply o

fi gure 33.0 PREPARATION FOR USE: First unpack the unit and check for damage caused by shipping. Next, open the case.. Verify the hydrostatic test

5.6. If the fi tting leaks, remove from the SEA and inspect threads and O-ring for damage. Replace or repair parts as needed. 5.7. Bleeder valve (712