MAINTENANCE
HBC(X), PHBC(X), RHBC(X), CHBC(X): Installation, Operation, and Maintenance Instructions 11
MAINTENANCE
FAN The fan should be inspected and cleaned annually, in conjunction with
maintenance of the motor and bearings. It is important to keep the wheels
clean in order to avoid imbalance and vibration.
MOTOR Check motor connections to ensure that they are secure and made in
accordance with the wiring diagram.
The blower motor should be cleaned annually.
WARNING: Units with ECM motors have line voltage power applied at all times. Make
sure power is disconnected before servicing.
FILTER The air filter should be cleaned or replaced every 30 days or more frequently if
severe conditions exist. Always replace the filter with the same type as
originally furnished.
COIL Any dust or other contaminants which accumulate on the heat transfer surfaces
interferes with the air flow and impairs heat transfer. The coil must be kept
clean by any of the following methods.
• Cleaning with low-pressure compressed air.
• Flushing or rinsing with water (a detergent is advisable for greasy surfaces).
DRAIN PIPING The drain should always be:
• Connected or piped to an acceptable disposal point sloped away from the
unit at least 1/8-inch per foot.
• Checked before summer operation.
• Periodically checked during summer operation.
PREVENTATIVE
MAINTENANCE
To achieve maximum performance and service life of each piece of equipment,
a formal schedule of regular maintenance should be established and
maintained.
MAINTENANCE
UPDATES
A current copy of the Maintenance Program log can be found at
www.firstco.com under “Product Information,” or click HERE.
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