Component Maintenance Manual
EFFECTIVITY: ALL
21-00-22
Page
1004
JULY 21, 2011
3.4.3.12
Using a wire brush and cleaning solvent, completely remove old thread sealant. Apply
a thin layer of thread sealant primer to fitting threads.
CAUTION
: WHEN APPLYING THREAD SEALANT, TAKE EXTREME CARE TO KEEP SEALANT OFF
FIRST 2 OR 3 THREADS.
3.4.3.13
Apply Loctite thread sealant on all male fitting threads sparingly.
CAUTION
: WHEN APPLYING R12 OIL TO FLARE AND O-RING, TAKE EXTREME CARE TO KEEP OIL
AWAY FROM FITTING THREADS
3.4.3.14
Apply a light coating of R12 refrigerant oil to flare and/or o-ring to prevent metal galling
or o-ring damage.
3.4.3.15
Tighten joints as required to stop leaks (refer to Table 1, Section 1.3 for torque
values).
CAUTION
: VENT SYSTEM PRESSURE VERY SLOWLY TO ASSURE COMPRESSOR OIL IS NOT
VENTED WITH THE NITROGEN. DO NOT LET AIR ENTER THE SYSTEM.
3.4.3.16
After leak check is finished and system integrity is sound, turn off nitrogen source,
disconnect yellow charging hose from nitrogen source and slowly release nitrogen
pressure to zero.
3.4.3.17
Close manifold valve.
3.4.3.18
System is now ready for charging (refer to Servicing, Section 13).
SUBTASK 21-00-22-81-001
3.5
Fault Isolation (Trouble Shooting):
3.5.1
The following list of system/component failures and/or abnormal operation and possible
solutions is only a partial listing of what may occur. The more informed service personnel
are in the operation of the system and its various components, the less time will be required
to diagnose failures. Use this trouble shooting list as well as all information contained in this
manual, to aid in diagnosing system faults. Contact Enviro Systems customer service for
any items not listed in this trouble shooting list.
