Compressor; Electrical Controls - York R-134a Operation And Maintenance Manual

SECTION 6 - MAINTENANCE
the detector will assure that any leakage will travel
through the tube to the detector.
5. Mark any leaking tubes for later identification.
6. If any of the tube sheet joints are leaking, the leak
should be indicated by the detector. If a tube sheet
leak is suspected, its exact location may be found
by using a soap solution. A continuous buildup of
bubbles around a tube indicates a tube sheet leak.

COMPRESSOR

Maintenance for the compressor assembly consists
of checking the operation of the oil return system and
changing the dehydrator, checking and changing the oil,
checking and changing the oil filters, checking the op-
eration of the oil heater, checking the operation of the oil
pump, and observing the operation of the compressor.
Internal wearing of compressor parts could be a seri-
ous problem caused by improper lubrication, brought
about by restricted oil lines, passages, or dirty oil filters.
30
If the unit is shutting down on (HOT) High Oil Tem-
perature or Low Oil Pressure (OP), change the oil filter
element. Examine the oil filter element for the pres-
ence of aluminum particles. Aluminum gas seal rings
can contact the impeller and account for some alumi-
num particles to accumulate in the oil filter, especially
during the initial start up and first several months of
operation. However, if aluminum particles continue to
accumulate and the same conditions continue to stop
the unit operation after a new filter is installed, notify
the nearest Johnson Controls office to request the pres-
ence of a Johnson Controls Service Technician.

ELECTRICAL CONTROLS

For information covering the OptiView™ Control
Center operation, refer to the OptiView™ Control Cen-
ter – Operation Manual (160.76-O2).
FORM 160.76-O1
ISSUE DATE: 05/22/2019
JOHNSON CONTROLS