YORK INTERNATIONAL
20
FORM 160.54-O2(1102)
FORM 160.54-O2(1102)
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YORK INTERNATIONAL
OIL EDUCTOR BLOCK
SOLENOID VALV
E
SOLENOID VALVE
DEHYDRATOR
STOP VALVE
STOP VALVE
CHECK VALVE
COMPRESSOR
FIG. 9 – OIL RETURN SYSTEM
LD08578
SECTION 4
OPERATIONAL MAINTENANCE
OIL RETURN SYSTEM
The oil return system continuously maintains the
proper oil level in the compressor oil sump. (See Fig.
9.)
High pressure condenser gas ows continuously
through the eductor inducing the low pressure, oil rich
liquid to ow from the evaporator, through the dehy-
drator to the compressor sump.
CHANGING THE DEHYDRATOR
To change the dehydrator, use the following pro-
cedure:
1. Shut the stop valves on the condenser gas line,
oil return line to rotor support and inlet end of the
dehydrator.
2. Remove the dehydrator. Refer to Fig. 9.
3. Assemble the new lter-drier.
4. Open condenser stop valve and check dehydrator
connections for refrigerant leaks.
5. Open all the dehydrator stop valves to allow the
liquid refrigerant to ow through the dehydrator
and condenser-gas through the eductor.
4
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