Repair Procedures; Rp1 General; Rp2A Leak Test (Warm & Empty Unit) - CAIRE Companion C1000 Technical & Service Manual

XI
Troubleshooting & Repair Procedures
RP1 – General
The following procedures have been carefully prepared to allow
proper removal and replacement of defective components and
should be used in conjunction with the Troubleshooting Chart and
the tests in this section.
WARNING: Make sure the unit is empty and vent valve is open
before replacing any component, except seals.
WARNING: Parts that are welded in place must not be replaced
in the field. Should these parts fail, return complete assembly or
sub-assembly to factory for repair. DO NOT use solder or silver
solder to repair broken welds.
CAUTION: When replacing components, make sure the new
part is oriented exactly the same as the original part prior to
installation.
CAUTION: Some components require a specific amount of
torque when assembling. Follow torque requirements where
specified.
NOTE: All replacement parts must be factory approved, cleaned
for oxygen service, and stored in sealed plastic bags. The repair
area must be clean and separate from other areas. Room air should
be filtered, and free from dust, soot, and other contaminants.
NOTE: When replacing components with pipe threads, use PTFE
tape thread sealant. Apply two rounds of PTFE tape to threads
near end of component, avoiding first thread.
NOTE: When assembling new compression fittings, tighten 1/8",
1/4" and 1/2" nuts eight flats past finger tight and 3/16" nuts five
flats past finger tight. When reassembling previously used com-
pression fittings, tighten nuts one to two flats past finger tight.
RP2A - Leak Test (Warm & Empty Unit)
1) Remove the covers (RP4).
2) Set the flow control valve to 0 LPM (Off).
3) Pressurize the C1000/T portable to approximately 1.52 bar
(22 psi) with gaseous oxygen using the portable pressurizing
setup and gaseous oxygen supply (Figure 9). Close the vent
valve after pressurizing the unit and remove the pressurizing
setup from the vent tube.
4) Connect the test pressure gauge to the oxygen outlet barbed
fitting and set the flow control valve to its highest setting.
Place the C1000/T in the portable test fixture (Figure 10).
Figure 9: Pressurizing the Companion Portable
Companion Portable Technical Service Manual • PN 20562220 Rev B
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