Oil Filter - Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual

Inspect the Control Panel
-- Maintenance consists of
general cleaning and tightening of connections. Vacuum the
cabinet to eliminate dust build-up. If the chiller control
malfunctions, refer to the Troubleshooting Guide section for
control checks and adjustments.
Ensure power to the control center is off when cleaning and
tightening connections inside the control p_mel. Failure to
disconnect power could result in electrocution.
Check Safety and Operating Controls
Monthly
-- Check values of monitored parameters (see
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 12 for Control Test functions.
Changing Oil Filter--Change
the oil filter on a
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 flom 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
filtel: Have rags and a catch basin available to collect oil
spillage.
5. Equfdize the filter's higher internal pressure to ambient
by connecting an oil charging hose to the Schmder valve
on the oil filter housing. Collect the oil-refrigerant mix-
ture which is dischm'gedi
6. Remove the oil filter assembly by loosening the hex nuts
on both ends of the filter assembly.
7. Insert the replacement tilter assembly with the rerow on
the housing pointing away from the oil pump.
8. Rotate the assembly so that the schraeder drain vfflve is
oriented fit the bottom, and tighten the connection nut on
each end to a torque of approximately 30 ft-lb (41 N-m)
The oil filter housing is at a high pressure. Relieve this
pressure slowly. Failure to do so could result in serious per-
sonal injury.
9. Evacuate the filter housing by placing a vacuum pump on
the charging valve. Follow the normal evacuation proce-
dures. Shut the charging valve when done and reconnect
the valve so that new oil can be pumped into the filter
housing. Fill with the stone amount that was removed;
then close file charging valve.
10. Remove the hose from the chmging valve, open the isola-
tion valves to the filter housing, and turn on the power to
the pump and the motol:
Oil Specification
-- If oil is added, it must meet the fol-
lowing Carrier specifications:
Oil Type for units using R-134a .................. Inhibited
polyolester-based synthetic
compressor oil formatted for
use with HFC, gear-driven,
hermetic compressors.
ISO Viscosity Grade ................................. 68
The polyolester-based oil (P/N: PP23BZI03) may be
ordered from a local Carrier representative.
Oil Changes--Cmrier
recommends changing the oil
after the first year of operation and every three to five years
thereafter as a minimum in addition to a yedy oil amdysis.
Howevel: if a continuous oil monitoring system is functioning
and a yearly oil analysis is performed, file time between oil
changes can be extended.
TO CHANGE THE OIL
1. Transfer the refrigerant into the chiller condenser vessel
(for isolatable vessels) or to a pumpout storage tank.
2. Mark the existing oil level.
3. Open file control and oil heater circuit breakel:
4. When the chiller pressure is 5 psig (34 kPa) or less, drain
the oil reservoir by opening the oil charging vfdve
(Fig. 2). Slowly open the valve against refrigerant
pressure.
5. Change the oil filter fit this time. See Changing Oil Filter
section.
6. Change the refrigerant filter fit this time, see the next
section, Refrigerant Filtec
7. Charge the chiller with oil. Chmge until the oil level is
equal to the oil level marked in Step 2. Turn on the power
to the oil heater and let file PIC [II warm it up to fit least
140 F (60 C). Operate the oil pump manually, using the
Control Test function, for 2 minutes. For shutdown condi-
tions, the oil level should be full in the lower sight glass.
If the oil level is above
1/2
full in the upper sight glass,
remove the excess oil. The oil level should now be equal
to the amount shown in Step 2.
Refrigerant Filter
--
A refrigerant filter/driel, located on
the refrigerant cooling line to the motol; should be changed
once a ye;u or more often if filter condition indicates a need for
more frequent replacement. Change the filter by closing the
filter isolation valves (Fig. 4) and slowly opening the flare
fittings with a wrench and back-up wrench to relieve the pres-
sure. A moisture indicator sight glass is located beyond this
filter to indicate the volume and moisture in the refrigerant. If
the moisture indicator indicates moisture, locate the source of
water immediately by performing a thorough leak check.
Oil Reclaim Filter--The
oil reclaim system has a
strainer on file eductor suction line, a strainer on the discharge
pressure line, and a filter on the cooler scavenging line.
Replace file filter once per year or more often if tilter condition
indicates a need for more frequent replacement. Change the
filter by closing the filter isolation valves and slowly opening
the flare fitting with a wrench and back-up wrench to relieve
the pressure. Change the stminel_ once every 5 yeal_ or when-
ever refrigerant is evacuated from the coolel:
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