Replacement Of Bag; Replacement Of Cylinder; Replacement Of Burst Disc; Replacement Of Charging Port Complete - MSA S-Cap-Air Maintenance Manual

5.5

Replacement of Bag

[Part number 10018520 spare part bag S-Cap-Air]
[Part number 10034562 spare part bag S-Cap-Air 'Light']
Disconnect hood from valve. Pull clip from hose connection, then pull supply hose off the
connection. Unhook clip from firing pin. Unbotton pressure indicator from bag loop, then
withdraw complete cylinder / valve assembly from old bag and put it back again into new
bag in reverse order.
5.6

Replacement of Cylinder

Note: Prior to any servicing ensure that cylinder is fully discharged.
[Part number 10034231 Steel cylinder 3 litres with valve (15 min.)]
[Part number 10033901 Composite cylinder 3 litres with valve (15 min.)]
Disconnect hood from valve. Pull clip from hose connection, then pull supply hose off the
connection. Unhook clip from firing pin. Unbotton pressure indicator from bag loop, then
withdraw complete cylinder / valve assembly from bag.
Charge new cylinder. Put new cylinder and valve assembly into the bag. Check O-ring on
hose connection, replace if necessary [part number 10024118, O-ring for hose connection,
pg 10]. Check the two felt disks in the hose connection for cleanliness, if necessary, re-
place [part number 10019508, felt disk, spare, pg 10]. Carefully push hose entirely on hose
connection, lock it in position with the clip [part number 10019483, clip spare part, pg 5].
Finally make function test.
5.7

Replacement of Burst Disc

Note: Prior to any servicing ensure that cylinder is fully discharged.
[Part number 10032930 Burst disc spare part kit]
Unscrew burst disc retaining screw (opposite to indicator) remove old burst disc and gas-
ket. All 3 components must be replaced since they are calibrated to each other. Fit new
gasket, observe cleanliness. Fit new burst disc with bulging to outside. The new retaining
screw is fitted with a locking force of 5,9 ± 0,3 Nm torque. Charge cylinder. Check for leak-
tightness by using liquid leak detector, leak detector spray, or soap solution with brush.
5.8 Replacement of Charging Port
Note: Prior to any servicing ensure that cylinder is fully discharged.
[Part number 10044717 Charging Port complete]
Unscrew the filling port with 27-mm
leaktightness by pressurising cylinder and using liquid leak detector, leak detector spray,
or soap solution with brush.
wrench. Screw in new filling port [30 Nm]. Check for
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