York YVWA User Manual

JOHNSON CONTROLS
131
FORM 201.30-ICOM1 (519)
ISSUE DATE: 05/22/2019
7
SECTION 7 - MAINTENANCE
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 DAILY WEEKLY MONTHLY ANNUALLY
Record operating conditions (on applicable log form) X
Check oil level in oil level sight glass X
Check refrigerant levels X
Check oil return system operation X
Check operation of motor starter X
Check oil heater operation X
Check 3-phase voltage and current balance X
Check programmable operating setpoints and safety
cutouts. Make sure they are correct for the application.
X
Verify condenser and evaporator liquid ows X
Check and repair leaks as needed¹ X
Check and tighten all electrical connections X
Check the motor windings resistance X
Clean or back ush VSD heat exchanger X¹
Replace VSD coolant (after cleaning heat exchanger) X
Perform oil analysis on compressor lube oil X¹
Perform refrigerant analysis X
Perform Eddy current testing and inspect tubes X²
Clean evaporator and condenser tubes X²
For operating and maintenance requirements listed above, refer to appropriate service literature, or contact a local Johnson Controls Field
Service Ofce.
¹ This procedure must be performed at the specied time interval by an industry certied technician, who has been trained and qualied to
work on this type of YORK equipment. A record of this procedure being successfully carried out must be maintained on le 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).
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.

York YVWA Specifications

General

Brand	York
Model	YVWA
Category	Chiller
Language	English