Aqua Lung MRS III Guida all'installazione
MRS III
Mobile Rell System
for the Aqua Lung SEA
(Survival Egress Air)
January, 2016
Operation and
Maintenance Manual
Change No. Date Title or Description Change Made By
01-2010 5/2010 Add pages 35 & 36, Case dimensions, MRSIII
weights, empty & full
BAS
02-2010 5/2010 Page 26, items #7 & #11, part number changed BAS
03-2010 9/2010 New page 34, 955SSMM check vakve overhaul BAS
01-2011 9/2011 New page 35, PRS6 overhaul BAS
02-2011 9/2011 New page 36, Preset Regulator and overhaul kit
moved to page 36.
BAS
03-2011 9/2011 Inline Bleeder Assembly moved to page 28 BAS
04-2011 9/2011 Page 28, items #69 & #70 added to list. BAS
05-2011 10/2011 Page 35, item #347-1 added to picture and table BAS
01-2012 2/2012 Page 27, item 21, only 1 is required BAS
02-2012 4/2012 Page 14, item 15.5.8, new designation of torque.
Page 17, items 15.6.4.4 & 15.6.4.6, new
designations of torque.
BAS
03-2012 8/2012 Page 15, item 15.5.3.5, and directions to remove
VAL1-13.
BAS
01-2016 1/2016 Page 28, item 71 was added to the list, and sketch
on page 25 was updated accordingly.
BAS
CHANGE RECORD
TABLE OF CONTENTS
SECTION 1................................................................................................................................................... 1
DESCRIPTION OF UNIT ............................................................................................................... 1
SECTION 2................................................................................................................................................... 1
CONFIGURATION ......................................................................................................................... 1
FIGURE 1, MRS III UNIT ............................................................................................... 1
SECTION 3 ............................................................................................................................................ 2
PREPARATION FOR USE ............................................................................................................. 2
FIGURE 2, CYLINDER HYDROSTAT STICKER .......................................................... 2
SECTION 4 ............................................................................................................................................ 2
MRS III OPERATING INSTRUCTIONS ........................................................................................ 2
SECTION 5 ............................................................................................................................................ 2
OPERATION .................................................................................................................................. 2
OPENING VALVES ......................................................................................................................... 2
CONNECTING FILL HOSES ......................................................................................................... 2
FIGURE 3, OPENING SUPPLY CYLINDER VALVES .................................................. 2
LEAKING FITTINGS ...................................................................................................................... 3
BLEEDER VALVES ........................................................................................................................ 3
FIGURE 4, CONNECTING SEA FILL HOSES ............................................................... 3
FIGURE 5, CLOSE BLEEDER VALVE ........................................................................... 3
FIGURE 6. OPEN PANEL-MOUNTED VALVES ........................................................... 3
FIGURE 7, FILL PRESSURE GAUGE ............................................................................ 3
SECTION 6 ............................................................................................................................................ 3
REFILLING SUPPLY CYLINDERS ............................................................................................... 3
CHECK HYDROSTAT DATE ......................................................................................................... 3
VISUAL INSPECTION ...................................................................................................................3
FILL ADAPTERS ............................................................................................................................3
FIGURE 8, FILL ADAPTER ............................................................................................. 4
FIGURE 9, REMOVE RUBBER CAP ............................................................................ 4
FIGURE 10, CONNECT TO AIR INLET FITTING ......................................................... 4
FIGURE 11, CHECK SUPPLY AIR PRESSURE ............................................................. 4
SECTION 7 ............................................................................................................................................ 4
AFTER FILLING IS COMPLETED ............................................................................................... 4
FIGURE 12, DRAINING FILL HOSE ............................................................................. 5
FIGURE 13, PUTTING AWAY FILL HOSE ....................................................................5
SECTION 8 ............................................................................................................................................ 5
WARNINGS ..................................................................................................................................... 5
MRS III MAINTENANCE
SECTION 9 ............................................................................................................................................ 6
AFTER ONE YEAR, AND EVERY YEAR THEREAFTER .......................................................... 6
OVERHAUL SEA ADAPTERS...................................................................................................... 6
FIGURE 14, REPLACE FILL ADAPTER ASSEMBLY ................................................. 6
FIGURE 15, PRS21-8 ......................................................................................................6
INSTALLING SEALS .....................................................................................................................7
FIGURE 16, USING PRS21-8-1 ...................................................................................... 7
FIGURE 17, USING PRS21-8-2 ....................................................................................... 7
FIGURE 18, USING PRS21-8-3 ...................................................................................... 7
FIGURE 19, FINISHED SPINDLE AND BODY ............................................................ 7
SECTION 10 ............................................................................................................................................ 8
REPLACING BLEEDER VALVE SEAT ......................................................................................... 8
FIGURE 20, BLEEDER VALVE AND SEAT ................................................................... 8
SECTION 11 ............................................................................................................................................ 8
DISASSEMBLING UNIT ................................................................................................................ 8
REMOVING TOP PLATE ...............................................................................................................8
FIGURE 21, REMOVE SCREWS FROM PLATE ........................................................... 8
I
FIGURE 22, REMOVE TOP PLATE ................................................................................8
FIGURE 23, INSPECT FOAM PADDING ....................................................................... 8
FIGURE 24, DISCONNECT CYLINDERS ...................................................................... 9
REMOVING CYLINDERS ............................................................................................................. 9
FIGURE 25, REMOVE CYLINDERS ............................................................................. 9
CGA INSPECTION REQUIREMENTS .......................................................................................... 9
REINSTALL SUPPLY CYLINDER ................................................................................................9
FIGURE 26, CONNECTING O’ RING ............................................................................ 9
SECTION 12 .......................................................................................................................................... 10
CYLINDER INSPECTION GUIDELINES ...................................................................................10
SECTION 13 .......................................................................................................................................... 10
REMOVING UNIT FROM CASE ................................................................................................. 10
FIGURE 27, REMOVE SCREWS FROM BACK .......................................................... 11
FIGURE 28, REMOVE UNIT FROM CASE ................................................................. 11
SECTION 14 .......................................................................................................................................... 10
GAUGE CALIBRATION .............................................................................................................. 11
REMOVING GAUGES ................................................................................................................. 11
FIGURE 29, REMOVE AND REPLACE GAUGE ....................................................... 11
REINSTALLING GAUGE ............................................................................................................. 12
REINSTALLING UNIT ................................................................................................................. 12
PRESSURE TEST .......................................................................................................................... 12
SECTION 15 .......................................................................................................................................... 12
AFTER FIVE YEARS AND EVERY FIVE YEARS THEREAFTER .......................................... 12
HYDROSTAT OF CYLINDERS ................................................................................................... 12
FILL VALVE MAINTENANCE .................................................................................................... 13
FIGURE 30, FILL VALVE ASSEMBLY .........................................................................13
SUPPLY CYLINDER VALVES ..................................................................................................... 14
FIGURE 31, SUPPLY CYLINDER VALVE ................................................................... 14
REMOVING SUPPLY CYLINDER VALVE ................................................................................14
FIGURE 32, VAL1-10 TOOL .......................................................................................... 14
FIGURE 33, USING VAL1-10 ........................................................................................ 14
FIGURE 34, SUPPLY CYLINDER VALVE ASSEMBLY ............................................ 15
FIGURE 35, VAL1-12 VALVE NUT TOOL ...................................................................15
FIGURE 36, REMOVE BONNET W/VAL1-12 .............................................................15
FIGURE 37, REMOVE BONNET W/ WRENCH .......................................................... 15
REPLACING SAFETY DISC ........................................................................................................ 16
FIGURE 38, SAFETY DISC PLACEMENT ..................................................................16
SUPPLY VALVE GAUGE MAINTENANCE ..............................................................................16
FIGURE 39, VAL1-11 GAUGE TOOL ........................................................................... 16
FIGURE 40, REMOVE GAUGE W/VAL1-11 ................................................................ 16
FIGURE 41, SUPPLY CYLINDER GAUGE ASSEMBLY ............................................17
SECTION 16 .......................................................................................................................................... 17
MRS III REGULATOR .................................................................................................................. 17
REMOVING FROM MRS III ........................................................................................................17
FIGURE 42, REGULATOR ASSEMBLY .......................................................................17
FIGURE 43, REGULATOR FITTINGS .......................................................................... 18
FIGURE 44, ACORN NUT ............................................................................................. 18
FIGURE 45, 1120KIT-1 DETAIL .................................................................................... 19
REASSEMBLE REGULATOR ..................................................................................................... 19
PRESSURE TESTING ...................................................................................................................19
SECTION 17 .......................................................................................................................................... 19
MRS III CASE ...............................................................................................................................19
CASE WARRANTY INSTRUCTIONS ......................................................................................... 20
FIGURE 46, CASE LATCHES........................................................................................20
FIGURE 47, HANDLE LATCH ...................................................................................... 20
FIGURE 48, CARRY HANDLES ...................................................................................20
FIGURE 49, HANDLE AND WHEELS .........................................................................20
II
III
WARNINGS, CAUTIONS, & NOTES
Pay special attention to information provided in warnings, cautions, and notes that are accompanied
by one of these symbols:
A WARNING indicates a procedure or situation that may result in serious injury or death if
instructions are not followed correctly.
A CAUTION indicates any situation or technique that will result in potential damage to the
product, or render the product unsafe, if instructions are not followed correctly.
A NOTE is used to emphasize important points, tips, and reminders
WARNING:
This unit contains air under high pressure. Serious injury may result from misuse of this
apparatus and the gas it contains.
Avoid blowing compressed gas at yourself or any other person.
Wear hearing protection.
Avoid standing over top of the unit when it is in use.
Have the gauges checked for accuracy every 18 months. They should be plus or minus
100psi.
Do not overpressurize any compressed gas cylinder.
Do not ll a damaged cylinder.
Do not use this unit if the hoses are damaged.
Do not ll this unit if the supply cylinders have not had the proper hydrostatic testing done
within ve years of today’s date.
TROUBLE SHOOTING CHART........................................................................................................21-23
ILLUSTRATED PARTS BREAKDOWN ................................................................................................ 24
MRS III UNIT COMPLETE ASSEMBLY................................................................................26-28
INLINE BLEEDER ASSEMBLY .................................................................................................. 28
FILL VALVE .................................................................................................................................. 29
SUPPLY CYLINDER VALVE ..................................................................................................30-31
SEA FILL ADAPTER .................................................................................................................... 32
ONE-YEAR MAINTENANCE KIT .............................................................................................. 33
FIVE-YEAR MAINTENANCE KIT ............................................................................................. 33
955SSMM CHECK VALVE ..........................................................................................................34
PRS6..... ..........................................................................................................................................35
REGULATOR ................................................................................................................................ 36
MRS III FLOW DIAGRAM ......................................................................................................................... 37
PELICAN CASE, DIMENSIONS, TOP ...................................................................................................... 38
PELICAN CASE, DIMENSIONS, BOTTOM ............................................................................................. 39
1.0 DESCRIPTION OF UNIT: The MRS III is designed to rell the Aqua Lung Survival Egress
Air (SEA) LV, MK1.5, MK2, MK2.5. It has an internal supply of two carbon ber composite
4500psi cylinders and has two preset regulated 3000psi ll lines. The control panel will allow
you to monitor the pressure in the supply cylinders, verify the preset regulated pressure and con-
trol the lling of one or two SEA units.
2.0 CONFIGURATION: The attached picture shows the COMPLETE MRS III UNIT. The items
lettered are listed below.
MRS III
Mobile Rell System
A. Supply Cylinder (CYL1)
B. Rell Port w/ rubber cap (RCAP)
C. Adapter PRS6 to CGA 347
D. Case (1650)
E. Frame/Control Panel (FRM1)
F. SEA ll adapter (PRS21)
G. Bleeder valves (712)
H. Fill Hose (HOS1)
I. SEA Fill pressure Gauge (GAG1)
J. Supply Pressure Gauge (GAG1)
K. Preset regulator (1120)
L. Regulated Pressure Gauge (GAG1)
M. Fastener for top cover of the frame
N. Top Cover/ Instruction sheet
O. Fill Valves (YVA3010A)
P. Supply Cylinder Valves (VAL1)
Q. SEA Cylinder Holder/Burst Protector
R. Unit/serial number, Manufacture date
gure 1 MRS III
N
O
P
B
KL
H
D
QE
IO
A
A
FG
F
J
R
M
M
Q
C
NOTE: These identication letters do not match the I.D. numbers in the PARTS section, page 25
page 1
gure 3
3.0 PREPARATION FOR USE: First unpack the unit and check for damage caused by shipping.
Next, open the case.. Verify the hydrostatic test date of the supply cylinders, shown on a sticker
prominently displayed on the cylinder (gure 2) and on the neck of supply cylinders (gure 3).
This should also be written on the maintenance log, located on the lower right hand corner of the
instruction sheet.
3.1 NOTE: THESE CYLINDERS (CYL1)
REQUIRE HYDROSTATIC TESTING
EVERY 5 YEARS, BY A DOT-
APPROVED TEST FACILITY. CHECK
DATE STICKER ON CYLINDER (gure 2),
OR ON CYLINDER NECK. (gure 3)
3.2. Since the unit is shipped from the factory empty
you must ll it with air (see Relling Supply
Cylinders, Section 6). The MRS III is now ready
to ll SEA cylinders.
4.0 MRS III OPERATING INSTRUCTIONS
4.1. The purpose of this unit is to allow the lling either MK or LV series SEA cylinders to
3000psi from an internal source of approved breathing air. You can ll either one or two at
a time.
4.1.1. WARNING-DO NOT FILL CYLINDERS THAT ARE DAMAGED OR THAT
HAVE LIQUID IN THEM. THEY MUST BE INSPECTED ACCORDING TO
MANUFACTURERS INSTRUCTIONS
5.0 OPERATION:
5.1. Make sure the ll valves (YVA3010A) on the panel are
closed.
5.2. Open the valves (VAL1) on the supply cylinders
(gure 3). Valves lock in place when released. To release,
push the knob while turning. Verify that the pressure in the
supply cylinders is between 3000 and 4500psi .
5.3. Verify that the Regulated Pressure Gauge on the panel
shows 3000psi, +/- 100 psi. If it does not, have a techni-
cian that has been trained on the maintenance of the MRS III
adjust the regulator, per 16.11.
5.4. Place the SEA in the cylinder holder.
5.5. Connect the SEA to the ll hose, by placing the ll
adapter (PRS21) into the ll port and rotating the knob
clockwise until the O-ring is fully seated. (gure 4)
5.5.1. CAUTION-DO NOT USE A WRENCH OR PLIERS TO TIGHTEN!!!
page 2
gure 2
HYDRO
DATE
STICKER
5.6. If the 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) should be closed (gure 5).
5.8. Slowly open the panel mounted valve (YVA3010A),
counterclockwise, that corresponds to the ll hose(s)
used (gure 6). There is no need to open any valve
on the SEA.
5.9. Watch the SEA ll pressure gauge (CAG1). Fill the
cylinder at a rate not to exceed 500psi per minute
(gure 7).
5.10. After the cylinder reachs 3000psi +/- 100psi, close
the ll valve (YVA3010A). Open the bleeder valve
(712) on the ll hose used to vent the pressure from
the ll lines.
5.11. Disconnect the ll hose from the SEA, by rotating
the ll adapter (PRS21) counterclockwise.
6.0 REFILLING SUPPLY CYLINDERS:
6.1. Verify that the cylinders (CYL1) are within 5 years of the last hydrostatic test. Check the
dated sticker placed prominently on each cylinder (gure 2). There is also a sticker on the
cylinder neck, visible without removing MRS top plate (gure 3).
6.2. Visually check the observable portion of the outside of the cylinders for damage. If any is
found consult manual for acceptable/unacceptable conditions.
page 3
gure 4 gure 5
gure 6
gure 7
6.2.1. NOTE-THIS INSPECTION SHOULD CONFORM TO COMPRESSED
GAS ASSOCIATION PAMPHLET C-6.2 VISUAL INSPECTION OF FIBER
REINFORCED HIGH PRESSURE CYLINDERS (EXTERNAL INSPECTION ).
6.3. This unit may be lled from any source of air that meets or
exceeds CGA Grade “D” standards at pressures up to and
including 4500psi. The standard inlet tting is a 4500psi or
a 300 BAR DIN (DIN-F) SCUBA tting (PRS6). For US
users, adapter for CGA 347 ll connections are provided.
(gure 8)
6.4. Open the valves (VAL1) on both Supply Cylinders.
REFER TO FIGURE 3 (page 2) FOR
A PICTURE OF THE VALVES
6.5. Remove rubber cap. (RCAP). (gure 9) Connect approved
source of air to inlet tting (DIN-F) (gure 10).
6.6. Pressurize the system at a rate not to
exceed 500psi per minute until it reaches the
maximum pressure of the approved air supply,
or 4500 psi, whichever is lower. (gure 11).
6.7. Close the supply cylinder valves
(VAL1).
6.8. Close the valve from the approved air
source and bleed the air from the ll connector.
6.9. Disconnect the approved air source from the
ll connection (DIN-F). Replace protective
rubber dust cap. (RCAP)
7.0 AFTER FILLING IS COMPLETED:
7.1. Verify that the supply cylinder valves (VAL1)
are closed.
page 4
gure 9
gure 8
gure 10
gure 11
Indice
