ENVIRO-TEC
14
FORM ET115.24-NOM12 (718)
SECTION THREE - NORMAL OPERATION & PERIODIC MAINTENANCE
MOTOR/BLOWER ASSEMBLY
The type of fan operation is determined by the control
components and their method of wiring and may vary
from unit to unit. Refer to the wiring diagram for each
unit for that unit’s individual operating characteristics.
The direct drive blower coil fan’s EC motors are
permanently lubricated and do not require field
lubrication. Check periodically that all motor hardware
is properly fastened and clear of all dirt and dust.
Should the assembly require 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.
GENERAL
Each unit on a job will have its own unique operating
environment and conditions that may dictate a
maintenance schedule for that unit that is different
from other equipment on the job. A formal schedule of
regular maintenance and an individual unit log should
be established and maintained. This will help to achieve
the maximum performance and service life of each unit
on the job.
Information regarding safety
precautions contained in the preface
at the beginning of this manual should
be followed during any service and
maintenance operations.
For more detailed information concerning service
operations, consult your Sales Representative.
Figure 5a-5b: Motor access
Figure 5a
Figure 5b
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