ENVIRO-TEC
13
FAN ASSEMBLY
Each fan assembly is easily removed from the unit at
four ¼” weld studs in the fan deck. In most applications
the fan assembly can be removed without disconnecting
the ductwork for service access to motors and blowers
at, or away from the unit.
Should the assembly require more extensive service,
the motor/blower assembly may be removed from the
unit to facilitate such operations as motor or blower
wheel/housing replacement, etc. Dirt and dust should
not be allowed to accumulate on the blower wheel or
housing. This can result in an unbalanced blower wheel
condition that can damage a blower wheel or motor.
The wheel and housing may be cleaned periodically
using a vacuum cleaner and a brush taking care not to
dislodge the factory balancing weights on the blower
wheel blades.
To remove the motor from the fan, disconnect the motor
wire leads, loosen the set screw on the motor shaft and
remove the (3) cap screws that attached the motor to the
blower housing. To reassemble, insert the motor into
the blower wheel, (motor slots to be facing up) center
the blower wheel within the blower housing and tighten
the set screw. Reinstall the (3) cap screws and tighten
to 40 in/lbs. Place the entire fan assembly back up over
the weld studs, install the washers and tighten the 1/4-20
nylok nuts to 65 in/lbs.
COIL
Coils may be cleaned in place by removing the motor/
blower assemblies and brushing the entering air face
between ns with a soft brush parallel to ns.
Do not brush perpendicular to n orientation as damage
may occur. Brushing should be followed by cleaning
with a vacuum cleaner. If a compressed air source is
available, the coil may also be cleaned by blowing
air through the coil ns from the entering air face.
Vacuuming should again follow this. Units provided
with the proper type of air lters, replaced regularly,
may require periodic coil cleaning.
Fan Assembly Removal
Electric Heater Removal
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