Aqua Lung MRS III, Operation And Maintenance

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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 or dry either is fine), or a soft bristle brush.
Use a source of Grade D breathing air to blow out
all internal passages.
15.6.4.4. Assemble in the reverse order of
disassembly. Use Christo-lube on all O-rings.
When reinstalling VAL1-16 torque to 25 ± 5 foot
pounds.
15.6.4.5. Replace neck valve O-ring VAL1-8. Lubri-
cate first with Christo-lube.
15.6.4.6. Reinstall the valve into the cylinder if it
was removed, using valve tool VAL1-10 (figure 32).
This has a non-critical torque of 45 ± 2 foot
pounds.
15.6.5 If possible, test the valve by pressurizing the
cylinder to 1000psi and checking for air leaks.
After the valve is leak free at 1000psi then
pressurize to 4500psi and check for leaks.
Otherwise, reinstall into system and test. After it
is leak free at 4500psi, reinstall into the MRS III
and return to service.
16.0 MRS III Regulator
(1120)
16.1. In order to rebuild the preset regulator (1120) it first must be removed from the panel. To
do this the plumbing must initially be drained of all air, and the unit removed from the case.
page 17
1120KIT-1*
1120-2
1120-1
PRS10
1120KIT-3*
1120KIT-2*
Regulator Assembly
figure 42
figure 41
Supply Cylinder Gauge Assembly
(VAL1-20)
VAL1-21
VAL1-25
VAL1-22
VAL1-20
VAL1-23
VAL1-26
* available only as a complete kit
Part # 1120KIT
VAL1-8