Side By Side; V-Belt Drive Installation - Kruger BNA General Instructions Manual

GUIDELINES FOR PLENUM AND PLUG FANS INSTALLATION
Adjacent Walls
The distance between the fan and walls or ceilings will affect the fan performance. The recommended
distance between the fan wheel and any wall is a minimum of 0.5 wheel diameter. Multiple walls reduce the
performance even more.

Side by Side

When two or more plenum fans are in parallel, there should be at least one fan diameter spacing between
the wheels. Applications with less spacing will experience performance losses.
0.5 D

V-BELT DRIVE INSTALLATION

Remove the protective coating from the end of the fan shaft and assure that it is free of nicks and

burrs.
Check fan and motor shafts for parallel and angular alignment.

Slide sheaves on shafts – do not drive sheaves on as this may result in bearing damage.

Align fan and motor sheaves with a straight-edge or string and tighten.

Place belts over sheaves. Do not pry or force belts, as this could result in damage to the cords in the

belts.
Adjust the tension until the belts appear snug. Run the unit for a few minutes (see section on unit

start-up) and allow the belts to "set" properly.
Switch off the fan, adjust the belt tension by moving the motor base. When in operation, the tight

side of the belts should be in a straight line from sheave to sheave with a slight bow on the slack side.
0.5 D
D
6
0.5 D