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Maintenance
3. Remove the liquid line drier and install an oversized liquid
line filter-drier (one size larger than the normal selection
size).
4. Evacuate the system according to standard procedures.
Normally, this will include the use of a high-vacuum pump
and a low-vacuum micron gauge for measuring the
vacuum obtained.
5. Recharge the system.
6. Turn on the power at the main power disconnect switch and
start the system.
Burn-Out/Acidic Cleanup Procedure
1. These systems should be cleaned using the suction line
filter-drier method.
2. Turn off power to the unit at the main power disconnect
switch.
3. Remove the burned-out compressor and install the new
compressor.
4. Install a suction line filter-drier designed for acid removal.
5. Remove the liquid line drier and install an oversized liquid
line filter-drier (one size larger than the normal selection
size).
6. Check the expansion valve, sight glass and other controls
to see if cleaning or replacement is required.
7. Evacuate the system according to standard procedures.
Normally this will include the use of a high-vacuum pump
and a low-vacuum micron gauge for measuring the
vacuum obtained.
8. Recharge the system through the access valve on the
suction line filter-drier.
9. Turn on power at the main power disconnect switch and
start the system.
10. A permanently installed suction line filter-drier permits
small-system cleanup to be completed in one service call.
The pressure drop across the suction line filter-drier should
be measured during the first hour of operation. If the
pressure drop becomes excessive, the suction line filter-
drier should be replaced (See Sporlan Bulletin 40-10, for
the maximum recommended pressure drop (PSI) for the
suction line filter drier).
11. In 24 hours, take an oil sample. Observe the col- or and test
for acidity. If the oil is dirty or acidic, replace the suction line
filter-drier.
12. In 2 weeks, examine oil to determine if another suction line
filter-drier change is necessary.
Component Replacement
All electrical connections should be checked to ensure they are
tight and properly made. Check all circuit breakers, contactors
and wiring. The contactors should be examined and replaced
if contacts are worn or pitted.
1. Turn off power to unit at the main power disconnect switch.
2. Remove the old component and install the new one.
68
3. Turn on power at the main power disconnect switch and
start the system.
Fan Replacement
The EC Fans are located behind the front access panel. The
panel must be removed to access the fans. The fans are
equipped with quick connect fittings for the power and control
cables to make swap-out easy. Lift the retaining latch on top of
the power and control cable connector housings to unplug the
cables. Cut the wire-ties holding the cable bundle in the
cabinet.
Remove the four hex-bolts holding the inlet ring then remove
the four hex-bolts holding the fan mounting bracket. Remove
the fan assembly together with the inlet ring from the cabinet.
Remove the mounting bracket from the old fan and install it on
the new fan. Bolt the new fan assembly (together with the inlet
ring) into the cabinet and plug the power and control cables into
the connectors.
Inlet Ring
Fan
M-6 Hex Bolts-
Two Per Side
M-5 Hex Bolts-
Two Per Side
Power/Control
Connectors
Condensate Pump Replacement
The condensate pump can be accessed directly through the
front panel and is easily accessible for replacement by
removing the front panel.
Reach inside the fan opening to grasp the pump. Tilt the pump
up and cut the wire-ties holding the clear plastic discharge line.
Remove the discharge line from the barbed stub fitting.
Release the cable retaining clip on the side of the pump and cut
the wire-ties holding the cable loop. Maneuver the pump into
the fan opening with the cable still attached and remove the
cover to expose the wire terminals. Remove the wires from the
pump and remove the pump from the cabinet. Install the
replacement pump in the same manner that the old pump was
removed, reversing the procedure.
AH-SVX015A-EN
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Table of Contents
Troubleshooting
