YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls

SECTION 9 - MAINTENANCE
132
PROCEDURE WEEKLY QUARTERLY
Check Oil Level in Oil Separator
Sight Glass.
Check Liquid Line Sight Glass/
Moisture Indicator.
Check refrigerant level in the Evaporator
Sight Glass while running
full load for 10 to 15 minutes.
Record System Operating Temperatures
& Pressures.
Check Condenser Coils for dirt /
debris and clean as necessary.
Check Programmable Operating
Setpoints and Safety Cutouts. Assure
they are correct for the application.
Check Compressor and Evaporator
Heater operation.
Check for dirt in the Panel. Check
Door Gasket sealing integrity.
X
X
X
X
SEMI-
ANNUALLY
**Leak check the Chiller. X
**Sample Compressor Oil, check for
Acid, and replace if necessary.
**Disconnect Power Source and
Lock Out. Check tightness of
Power Wiring connections.
Check Glycol concentration on Low
Temp. or other applications where
freezing may be a problem.
MAINTENANCE REQUIREMENTS FOR
YVAA CHILLERS
X
X
X
X
ANNUALLY EVERY 5
YEARS
VSD Glycol Change. X
X
X
X
FORM 201.28-NM1.1
ISSUE DATE: 8/29/2012
EVERY *
HOURS
* Reserved for customer use for any special site requirements.
** This procedure must be performed at the specific time by an industry certified technician who has been
trained and qualified to work on this type of equipment. A record of this procedure be successfully carried out should be maintained on file by
the equipment owner should proof of adequate maintenance be required at a later date for warranty purposes.
JOHNSON CONTROLS