40 YORK INTERNATIONAL
MAINTENANCE REQUIREMENTS FOR YORK YS CHILLERS
PROCEDURE DAILY WEEKLY MONTHLY QUARTERLY YEARLY EVERY 50,000 HOURS
Leak Check and Repair Leaks *** X
Perform Oil Analysis on Compressor Lube Oil *** X
Record Operating Pressures and Temperatures X
Calibrate Safety Controls X
Replace Oil Filters X
Replace Filters/Driers X
Check Slide Valve Operation and
Calibrate Slide Valve Potentiometer
X
Check Operation of Oil Heater X
Check Oil and Refrigerant Levels X
Lubricate Motor Bearings per
Motor Manufacturer’s Recommendation
X
Megohm Motor X
Check 3-Phase Voltage and Current Balance X
Remove Condenser Water Box(s) and
inspect tube sheets X
Mechanically Brush Condenser Tubes
X or as
necessary
Verify Evaporator and Condenser
Water Flow Rates vs. Design Conditions
X
Compressor Internal Inspection *** X
Vibration Analysis X
*** These procedures 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.
Maintenance
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