CDHF-SVU01C-EN
92
Overview
This section describes the basic
chiller preventive maintenance
procedures, and recommends the
intervals at which these procedures
should be performed. Use of a
periodic maintenance program is
important to ensure the best possible
performance and efficiency from a
CenTraVac® chiller.
Recommended purge maintenance
procedures for the EarthWise Purge
unit are covered by PRGD-SVU01A-
EN or the latest revision which can
be obtained at the nearest Trane
office.
Record Keeping Forms
An important aspect of the chiller
maintenance program is the regular
completion of records. Provided at
the end of this manual are copies of
the “Annual Inspection Check List
and Report”, “CenTraVac
Commissioning Checklist and a
‘‘Start-Up Report’’ with a TechView
settings record. When filled out
accurately by the machine operator,
the completed logs can be reviewed
to identify any developing trends in
the chiller’s operating conditions.
For example, if the machine operator
notices a gradual increase in
condensing pressure during a
month’s time, he can systematically
check, then correct the possible
cause(s) of this condition (fouled
condenser tubes, noncondensable in
the system, etcetera)
Daily Maintenance and Checks
[ ] Check the chiller’s evaporator and
condenser pressures, oil tank
pressure, differential oil pressure and
discharge oil pressure. Compare the
readings with the values provided in
the Normal Chiller Operating
Characteristics table.
IMPORTANT: IT IS HIGHLY
RECOMMENDED THAT THE
OPERATING LOG BE COMPLETED
ON A DAILY BASIS.
CAUTION
Moisture Contamination!IF FREQUENT PURGING IS
REQUIRED, MONITOR PURGE
PUMPOUT RATE, IDENTIFY AND
CORRECT SOURCE OF AIR OR
WATER LEAK AS SOON AS
POSSIBLE. Failure to do so can
shorten chiller life expectancy, due to
moisture contamination caused by
leakage.
[ ] Check the oil level in the chiller oil
sump using the two sight glasses
provided in the oil sump head. When
the unit is operating, the oil level
should be visible in the lower sight
glass.
Periodic
Maintenance