Plastec Adjustable Dampers - Manual (Page 4)

PL ASTEC VENTILATION, INC.
Installation, Operation & Maintenance Manual
GENERAL INSTRUCTIONS
TEST & START PROCEDURES
Disconnect power before servicing the unit. Make sure power is turned off and locked in
the OFF position.
Check that fan/blower is securely attached to the mounting location and that the mounting
location is also secure. This unit should not vibrate when operating! Check clearances and
all mounting hardware and secure as required.
All fans have sealed for life ball bearings and do not require lubrication. Running the unit for
15 to 20 minutes will assure lubricant to thoroughly mix with the bearings and operate at
optimum quietness.
When power is applied to the unit, check for proper rotation of fan wheel/impeller. Most
motors allow for reverse rotation and if the fan wheel/impeller is moving in the wrong
direction, air performance will be greatly affected. Reverse rotation for a prolonged period
of time may cause motor damage that could void the warranty. Check the motor wiring
diagram for proper wiring.
Electrical input check should be performed with fan properly loaded (pressure drop) to
assure motor name plate amps are not exceeded. Never run a fan at free air.
Check fan RPM against motor name plate to verify correct performance.
The fans are factory tested and checked for vibration so this type of balancing is not
required. Vibration could be caused by rough handling during shipment, installation, and
weak foundations. Correct as required.
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July 2012