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Periodic maintenance of the VariTrane
product is minimal, but necessary for
efficient operation. Routine mainte-
nance consists of inspecting/replacing
the air filters of the fan-powered
terminals.
Motors
Both the PSC (permanent split capaci-
tor) and the ECM (Electrically Commu-
tated Motor) require no lubrication
during its normal life of operation.
Fan Wheel:
Periodically, the fan wheel should be
inspected for dirt or debris and cleaned
as necessary.
Filter
The filter on fan-powered terminals will
need to be inspected/replaced routinely
depending on the environmental
conditions of the plenum.
Water Coil
Water coils should be inspected and the
fins should be cleaned periodically.
Water coils have been provided with an
access panel as standard to assist with
inspection and cleaning.
Fan Motor Replacement
WARNING
WARNING
Hazardous Voltage
w/Capacitors!
Disconnect all electric power, including
remote disconnects and discharge all
motor start/run capacitors before
servicing. Follow proper lockout/tagout
procedures to ensure the power cannot
be inadvertently energized. Verify with
an appropriate voltmeter that all
capacitors have discharged. Failure to
disconnect power and discharge
capacitors before servicing could result
in death or serious injury.
WARNING
WARNING
Rotating Components!
Disconnect all electric power, including
remote disconnects before servicing.
Follow proper lockout/tagout proce-
dures to ensure the power cannot be
inadvertently energized. Failure to
disconnect power before servicing
could result in death or serious injury.
VAV-SVN01E-EN
Maintenance
Figure 27 – Standard Motor Removal
Standard height fan-powered series
and parallel fan motors are replaceable
through the filter opening and the
standard sliding side access panel. To
access the fan motor, the fan housing
must be detached by removing the
mounting bolts that hold the housing to
the fan board. Removing the entire
housing allows the fan motor, fan
housing, and fan wheel to be re-aligned
on a workbench or floor and prevent
any possible fan wheel rubbing that
may occur. Removing the housing will
provide access to the motor shaft set
screw that holds the fan wheel to the
motor shaft.
The low-height fan assembly was
designed with an inlet ring that assists
with removal of the fan motor. To
access the fan motor assembly, the
bottom panel must be removed. The
inlet ring is held in place by six bolts
and three motor mount bolts. Remove
these bolts and the motor and fan
wheel will come out of the fan housing.
Figure 28 – Low-Height Motor Removal
55
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