Trane CVGF-SVU02B-E4 Operation And Maintenance Manual page 83

Replacing the Oil Filter
The oil filter should not be
changed unless absolutely
required due to plugging, which
will shut the chiller off on low oil
pressure or if the oil is required
to be changed. To replace the oil
filter, use the following
procedure:
1. Be sure the chiller is in the
Stop mode.
2. Locate the two oil filter
isolation valves (See Figure
24).
3. Connect an approved
refrigerant recovery unit for
R134a to the 1/4 inch Schrader
valve on the oil filter inlet
isolation valve to allow
removal of oil and refrigerant
from the oil filter cavity.
4. Close both isolation valves.
5. Recover the refrigerant and oil
out of the oil filter cavity.
6. Remove the oil filter cover by
removing the bolts and
loosening the Roto-Lock
connector on the outlet oil
filter isolation valve.
CVGF-SVU02B-E4
Periodic
Maintenance
Note: When removed, do not
allow any contaminants to get
on the oil filter cover. Re-
installing a contaminated oil
filter cover could decrease the
life of the compressor.
7. Remove the oil filter and o-
ring.
8. Install a new oil filter, o-ring,
and Roto-Lock nylon seal.
9. Replace the oil filter cover and
torque the bolts and Roto-
Lock connector. The cover is
torqued to 19 lb-ft (2.62 N-m)
and the Roto-Lock to 90 lb-ft
(12.44 N-m).
10. Evacuate the oil filter cavity
by attaching a deep vacuum
pump to the 1/4 inch
Schrader valve and pulling at
least a 500 micron (0.5 mm
Hg) vacuum. Do a standing
vacuum rise test to
determine if any leaks are
present. If leak free, remove
the vacuum pump from the
valve.
11. Replace the Schrader valve
cap and tighten.
12. Open both isolation valves.
13. On the DynaView ™
select Settings, Mode
overrides and select Oil
Pump. Start and run the oil
pump in manual mode to
charge the oil filter with oil.
Allow the pump to run for
several minutes and shut the
oil pump off by going back
to the Auto mode at the
control panel.
14. Check the oil level in the
sump and if it is below the
center of the lower sight
glass, add oil by following
the oil charging procedure
outlined previously.
display,
83