Plastec Adjustable Dampers - Manual (Page 5)

PL ASTEC VENTILATION, INC.
Installation, Operation & Maintenance Manual
GENERAL INSTRUCTIONS
MAINTENANCE
Before performing any maintenance on the fan, be sure power is turned off and locked in
the off position at the service entrance.
Ventilators should be carefully checked at least once a year. For critical or rugged applications,
a routine check every two or three months is suggested.
All motors carry a one-year warranty from the date of shipment. For repairs within the
warranty period, the motor must be taken to the motor manufacturer’s authorized service
dealer. Contact your representative for additional warranty details.
A periodic motor check should consist of spinning the motor shaft with the power off to be
sure the motor turns freely and the bearings run smoothly.
The motor cooling fan and guard should also be maintained by checking and cleaning
accumulated dust and debris.
The rotating wheel or propeller requires particular attention since materials in the air being
handled can build up on blades to cause destructive vibration or weaken the structure of the
propeller by corroding and /or eroding the blades. Regular inspection and corrective action
at intervals determined by the severity of each application are essential to good service life
and safety.
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July 2012