2. Loosen the set screw.
3. Using a drift pin centre-punch, tap the collar (in the hole provided) tangentially in the direction of rotation while
holding the shaft.
4. Re-tighten the screw.
5. Close unit access door and start pump(s) and fan(s).
Locking collar assembly
1.
Direction of rotation
2.
Drift pin: Tap the locking collar in direction of fan rotation until cam is locked.
3.
Tighten set screw.
ROTATION OF FAN(S) AND PUMP(S)
Fans must rotate without obstruction and both fans and pumps must rotate in the correct direction, which is
indicated by arrows on the equipment. Check proper functioning as follows:
1. Stop fan(s) and pump(s).
2. Turn the fan by hand to ensure rotation without obstruction. Remove obstruction, if present.
3. Start the pump(s) and check for the proper rotation as indicated by the arrow on the pump cover. If rotation is
wrong, stop pump and correct electrical wiring.
4. Start the fan(s) and check for proper rotation as indicated by the arrow on the fan housing. If rotation is wrong
stop fan(s) and contact BAC.
Forward curved centrifugal fan
W W W . B A L T I M O R E A I R C O I L . E U
25
5 Maintenance Procedure
5 Maintenance Procedure
Summary of Contents for VFL 241-H
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