Johnson Controls York MaxE YK Series, Руководство пользователя

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JOHNSON CONTROLS
FORM 160.75-O1 (309)
20
system components description
OIL EDuCTOR BLOCK
SOLENOID VALVE
SOLENOID VALVE
DEHYDRATOR
STOP VALVE
STOP VALVE
CHECK VALVE
COMPRESSOR
fig. 7 – 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. 7).
High pressure condenser gas flows continuously through
the eductor inducing the low pressure, oil rich liquid to
flow from the evaporator, through the dehydrator to the
compressor sump.
changing the dehYdrator
To change the dehydrator, use the following pro-
cedure:
1. Isolate the dehydrator at the stop valves.
2. Remove the dehydrator (See to FIG. 7).
3. Assemble the new filter-drier.
4. Open evaporator stop valve and check dehydrator
connections for refrigerant leaks.
5. Open all the dehydrator stop valves.