Scheduled Maintenance; Service Ontime; Inspect The Control Panel; Check Safety And Operating Controls - Carrier AquaEdge 19XRV series Operation, Maintenance And Installation Manual

DRIVE
CHAIN
CHAIN
GUARD
The added oil must meet Carrier specifications for the
19XRV. Refer to Changing Oil Filter and Oil Changes sections
on pages 89 and 90. Any additional oil that is added should be
logged by noting the amount and date.Any oil that is added due
to oil loss that is not related to service will eventually return to
the sump. It must be removed when the level is high.
An oil heater is controlled by the PIC III to maintain oil
temperature (see the Controls section) when the compressor is
off. The ICVC COMPRESS screen displays whether the heater
is energized or not. The heater is energized if the OIL HEATER
RELAY parameter reads ON. If the PIC III shows that the
heater is energized and if the sump is still not heating up, the
power to the oil heater may be off or the oil level may be too
low. Check the oil level, the oil heater contactor voltage, and oil
heater resistance.
The PIC III does not permit compressor start-up if the oil
temperature is too low. The PIC III continues with start-up only
after the temperature is within allowable limits.

SCHEDULED MAINTENANCE

Establish a regular maintenance schedule based on actual
chiller requirements such as chiller load, run hours, and water
quality. The time intervals listed in this section are offered as
guides to service only.
The ICVC will display a SERVICE
Service Ontime —
ONTIME value on the MAINSTAT screen. This value should
be reset to zero by the service person or the operator each time
major service work is completed so that the time between
service can be viewed and tracked.
Inspect the Control Panel —
general cleaning and tightening of connections. Vacuum the
cabinet to eliminate dust build-up. If the chiller control
GUIDE VANE
GUIDE VANE
ACTUATOR ACTUATOR
SHAFT
SET
SCREWS
GUIDE VANE
ACTUATOR
SPROCKET
GUIDE VANE
SPROCKET
Fig. 50 — Guide Vane Actuator Linkage
Maintenance consists of
89
HOLDDOWN
BOLTS (3)
GUIDE VANE
SHAFT
malfunctions, refer to the Troubleshooting Guide section for
control checks and adjustments.
CAUTION
Ensure power to the VFD is off when cleaning and
tightening connections inside the VFD enclosure. Failure
to disconnect power could result in electrocution.
Check Safety and
Check values of monitored parameters (see
Monthly —
Table 6 for safety control settings). To ensure chiller protec-
tion, the Automated Control Test should be performed at
least once per month (with machine in OFF mode). See
Table 14 for Control Test functions.
Changing Oil Filter —
yearly basis or when the chiller is opened for repairs. The
19XRV chiller has an isolatable oil filter so that the filter
may be changed with the refrigerant remaining in the
chiller. Early 19XRV compressors were designed with the
oil filter housing attached to the oil pump. The following
procedure applies to later 19XRV compressors which have
the oil filter separate from the oil pump.
1. Ensure the compressor is off and the disconnect for the
compressor is open.
2. Disconnect the power to the oil pump.
3. Close the oil filter isolation valves located behind power
panel on top of oil pump assembly.
4. Close the isolation valves located on both ends of the oil
filter. Have rags and a catch basin available to collect oil
spillage.
5. Equalize the filter's higher internal pressure to ambient
by connecting an oil charging hose to the Schrader valve
on the oil filter housing. Collect the oil-refrigerant mix-
ture which is discharged.
6. Remove the oil filter assembly by loosening the hex nuts
on both ends of the filter assembly.
7. Insert the replacement filter assembly with the arrow on
the housing pointing away from the oil pump.
SUCTION
HOUSING
ACTUATOR
BRACKET
a19-1731
Operating Controls
Change the oil filter on a