Component Maintenance Manual
12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
Fax (405) 382-0737
http://www.enviro-ok.com
Copyright © 2017
ATA 21-00-23
P a g e
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21
Revision 10
June 1, 2017
3.4.3.11 Apply soapy leak check fluid to each fitting connection. If leaks are detected, attempt
to tighten fitting without over tightening. If leak cannot be corrected with tightening,
system must be evacuated (refer to Servicing, Section 13) and then fitting must be
disconnected and new thread sealant applied.
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 R-134A 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 R-134A 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 21-00-23-81-001
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.
