Thermo King CRR-40 119, Руководство пользователя

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123
Refrigeration Maintenance and Service
Operations
NOTE: The following procedures involve
servicing the refrigeration system. Some of these
service procedures are regulated by Federal, and
in some cases, by State and Local laws.
All regulated refrigeration service procedures
must be performed by an EPA certified
technician, using approved equipment and
complying with all Federal, State and Local
laws.
NOTE: It is generally good practice to replace
the filter drier whenever the high side is opened
or when the low side is opened for an extended
period of time.
Service Tools
Unit Service Fittings
Special fittings are used on R-134a systems to
prevent mixing of non-HFC refrigerants in
R-134a units. These fittings are located in three
places on CRR refrigeration systems:
• Low side near the compressor suction service
valve (or suction adapter),
• High side near the compressor discharge
service valve (or discharge manifold),
• High side on the receiver tank.
Leak Detection
Leaks can be detected with the use of soap
bubbles and with Halogen leak detectors such as
model H10G, P/N 204-712 or model H10N, P/N
204-756 (portable).
Gauge Manifold Set
A new gauge manifold set (P/N 204-758) should
be dedicated for use with R-134a only. Gauge
hoses should also be dedicated to R-134a.
1. Internal Threads for Cap
2. High Pressure Fitting
3. Low Pressure Fitting
Figure 29: Service Fittings Specifications
AJA1314
CAUTION: When servicing Thermo King
R-134a refrigeration systems, use only
those service tools (i.e., vacuum pump,
refrigerant recovery equipment, gauge
hoses, and gauge manifold set) certified
for and dedicated to R-134a refrigerant
and Polyol ester based compressor oils.
Residual non-HFC refrigerant or
non-Ester based oils will contaminate
HFC systems.