Thermo King 914 724, Руководство пользователя

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Compressor and Clutch Maintenance (Rev. 1/99)
77
Checking the Oil Level
Drain the Oil
Draining the Oil
Remove the compressor from the unit and drain the oil from
the compressor drain plug and all other ports. Turn the
clutch (rotating the internal compressor parts) by hand and
drain oil again. Repeat until all oil is removed from the
compressor. Measure the oil in liquid ounces. Also, inspect
the oil for signs of contamination.
Oil contamination.
1. Dirt in the oil.
2. Color changed to a varnish color.
3. Presence of foreign substances, metal shavings, etc. in
the oil.
NOTE: Always replace oil with new fresh oil taken from a
sealed container only.
NOTE: Always replace the system filter-drier anytime the
system has been opened for service.
When a System Becomes Contaminated
A severely contaminated system may be indicated by black
oil in the compressor. If severe contamination occurs, it will
be necessary to flush the complete system. If flushing is
required, use industry approved materials.
In all cases when this occurs you must determine the extent
of contamination. Do this by removing the filter-drier and
determine if the darker colored oil is present at that point of
the system too. If it is, flushing the system is recommended.
If the oil appears clean at the filter-drier, install a new filter-
drier and replace the compressor with clean new oil. Refer
to checking and draining the compressor oil section for
details.
CAUTION: Any extra or replacement oil should be
placed into the system at the receiver tank port.
Electrical Connection
1. Connect the lead wire to the electrical circuit.
NOTE: The stationary field is grounded at the fac-
tory; therefore, it is necessary only to connect the hot
(lead) wire.
2. Engage and disengage the clutch several times to check
the clutch engagement. The disc should snap firmly
against the pulley.