FORM 160.73-O2 (605)
21
YORK INTERNATIONAL
OIL EDUCTOR BLOCK
SOLENOID VALVE
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 prop er
oil level in the compressor oil sump. (See Fig. 9.)
High pressure condenser gas fl ows continuously through
the eductor inducing the low pressure, oil rich liquid to
fl ow from the evaporator, through the de hy dra tor to the
compressor sump.
CHANGING THE DEHYDRATOR
To change the dehydrator, use the following pro-
ce dure:
1. Shut the stop valves on the condenser gas line, oil
return line to rotor support and inlet end of the de-
hy dra tor.
2. Remove the dehydrator. Refer to Figure 9.
3. Assemble the new fi lter-drier.
4. Open condenser stop valve and check dehydrator
connections for refrigerant leaks.
5. Open all the dehydrator stop valves to allow the liq-
uid re frig er ant to fl ow through the dehydrator and
con dens er-gas through the eductor.
4
To Next Page
Need help?
General