Trane CenTraVac Duplex CDHE, Operation & Maintenance Manual

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CDHF-SVU01C-EN
Oil Maintenance
Compressor Oil Change
It is recommended to change the oil
and oil filter:
• After the first 1000 hours of chiller
operation. For a chiller operated
continuously this oil and oil filter
change may be performed as soon
as 1.5 months after first start-up, for
a chiller operated intermittently it
may be 4 or 6 months after first
start-up.
• Again at the first scheduled annual
mainenance, preferably within 6 to
12 months of the first oil change.
Note: Use only Trane OIL00022. A full
oil change is 9 gallons of OIL00022.
Beyond the first year,
recommendations are to subscribe to
an annual oil analysis program rather
than automatically change the oil as
part of scheduled maintenance.
Change the oil only if indicated by
the oil analysis. Use of an oil
analysis program will reduce the
chillers overall lifetime waste oil
generation and minimize refrigerant
emissions. The oil analysis should
be performed by a qualified
laboratory that is experienced in
refrigerant and oil chemistry and in
the servicing of Trane centrifugal
chillers.
In conjunction with other diagnostics
performed by a qualified service
technician, oil analyses can provide
valuable information on the
performance of the chiller to help
minimize operating and maintenance
costs and maximize it’s operating life.
A drain fitting is installed in the oil
filter top, after the oil filter, for
obtaining oil samples.
Oil Change Procedure
When oil analysis indicates the need
to change compressor oil, use the
following procedure for removing
oil.
CAUTION
Heater Damage!
The oil sump heater must be
deenergized before draining the
sump. Failure to do so could
possibly burn out the oil sump
heater.
[ ] Draw the oil from the chiller
through the oil charging valve on the
chiller oil sump into an approved,
evacuated tank; or,
[ ] Pump the oil from the chiller
through the oil charging valve into an
airtight resealable container, using a
magnetically-driven auxiliary pump.
Forcing the oil from the oil sump by
pressurizing the chiller (by raising
chiller temperature or adding
nitrogen) is not recommended.
Refrigerant dissolved in the oil can
be removed and returned to the
chiller by using an appropriate deep-
vacuum recovery unit and heating
and agitating the oil container. Follow
all Federal, State and Local
regulations with regard to disposal of
waste oil.