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CVHE-SVU01E-EN
90
[ ] Complete all recommended
quarterly maintenance procedures.
[ ] Lubricate the vane control linkage
bearings, ball joints, and pivot
points; as needed a few drops of light
machine oil (SAE-20) is sufficient.
[ ] Lubricate vane operator tang
o-rings as described in the
maintenance section.
[ ] Lubricate the oil filter shutoff valve
o-rings by removing the pipe plug
and adding several drops of Trane
OIL00022. Replace plug.
[ ] Drain the contents of the rupture
disc and purge discharge ventline
drip-leg, into an evacuated waste
container minimally and more often if
the purge is operated excessively.
Also, apply one or two drops of oil
on the vane operator shaft and
spread it into a very light film; this
will protect the shaft from moisture
and rust.
Off-Season Maintenance
During those periods of time when
the chiller is not operated, be sure
the control panel is energized. This is
to keep the purge operational, the oil
heater warm and will also keep air
out of the machine.
Annual Maintenance
Shut down the chiller once each year
to check the items listed ; a more
detailed inspection checklist is
provided on the ‘‘Model CVHE, CVHF
and CVHG CenTraVac Annual
Inspection Checklist and Report’’
illustrated in this manual.
[ ] Perform the annual maintenance
procedures referred to in the
Maintenance Section of the purge
manual.
[ ] Use an ice water bath to verify that
the accuracy of the evaporator
refrigerant temperature sensor (4R10)
is still within tolerance (+ or - 2.0° at
32°F (1° at 0°C)). If the evaporator
refrigerant temperature displayed on
the UCP’s read-out is outside this 4-
degree tolerance range, replace the
sensor.
Note: If the sensor is exposed to
temperature extremes outside its
normal operating range (0°F to 90°F) (-
18°C to 32°C), check its accuracy at
six-month intervals.
Periodic
Maintenance