Section 7 - Maintenance; General Requirements; Table 43 - Operation/Inspection /Maintenance Requirements For Yvwa Chillers - York YVWA Installation Operation & Maintenance

FORM 201.30-ICOM1 (519)
ISSUE DATE: 05/22/2019

GENERAL REQUIREMENTS

The maintenance requirements for YVWA chillers are
shown below. The procedure is in the left-hand column
and the required frequency is marked with an X in the
right-hand column. Refer to the notes at the bottom of
the table to maintain warranty validation.

TABLE 43 - OPERATION/INSPECTION /MAINTENANCE REQUIREMENTS FOR YVWA CHILLERS

PROCEDURE
Record operating conditions (on applicable log form)
Check oil level in oil level sight glass
Check refrigerant levels
Check oil return system operation
Check operation of motor starter
Check oil heater operation
Check 3-phase voltage and current balance
Check programmable operating setpoints and safety
cutouts. Make sure they are correct for the application.
Verify condenser and evaporator liquid flows
Check and repair leaks as needed¹
Check and tighten all electrical connections
Check the motor windings resistance
Clean or back flush VSD heat exchanger
Replace VSD coolant (after cleaning heat exchanger)
Perform oil analysis on compressor lube oil
Perform refrigerant analysis
Perform Eddy current testing and inspect tubes
Clean evaporator and condenser tubes
For operating and maintenance requirements listed above, refer to appropriate service literature, or contact a local Johnson Controls Field
Service Office.
¹ This procedure must be performed at the specified time interval by an industry certified technician, who has been trained and qualified to
work on this type of YORK equipment. A record of this procedure being successfully carried out must be maintained on file by the equipment
owner should proof of adequate maintenance be required at a later date for warranty validation purposes.
² More frequent service may be required, depending on local operating conditions or relaxed with good engineering controls (water quality).
JOHNSON CONTROLS

SECTION 7 - MAINTENANCE

Compressor vibration analysis is not prescribed. Due
to the compressor design, a typical vibration analysis
can be misleading.
Periodic oil filter changes are not recommended.
Change the oil, filter, and filter driers only when an oil
analysis indicates a moisture issue.
DAILY WEEKLY MONTHLY
X
X
X
ANNUALLY
X
X
X
X
X
X
X
X
X
X
¹
X
X
¹
X
X²
X²
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