York Millennium YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 User Manual

42 YORK INTERNATIONAL
SECTION 5
OPERATIONAL MAINTENANCE
OIL RETURN SYSTEM
The oil return system continuously maintains the proper
oil level in the compressor oil sump. (See Figs. 18 &
19.)
High pressure condenser gas flows continuously
through the eductor inducing the low pressure, oil rich
liquid to flow from the evaporator, through the dehydra-
tor to the compressor sump.
CHANGING THE DEHYDRATOR
To change the dehydrator, use the following procedure:
1. Shut the stop valves on the condenser gas line, oil
return line to rotor support and inlet end of the de-
hydrator.
2. Remove the dehydrator. Refer to Fig. 19.
3. Assemble the new filter-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 flow through the dehydrator and
condenser-gas through the eductor.
FIG. 19 – OIL RETURN SYSTEM
LD00950

York Millennium YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4 Specifications

General

Brand	York
Model	Millennium YK M3 M3 G4 THRU YK S6 S4 J2, YK LB LB G4 THRU YK SE SC J4
Category	Chiller
Language	English