Oct-07
Delhi Industries Inc. 523 James Street, Delhi, Ontario N4B 2Z3
Tel. (519) 582-2440 Fax. (519) 582-0581
www.delhi-industries.com
ELECTRICAL
WARNIN
G:
Ensure power supply
i
s d
i
sconnected and locked out pr
i
or to mak
i
n
g
electr
i
cal connect
i
ons.
Before connecting the motor to the electrical supply, check the electrical characteristics and wiring instructions as
indicated on the motor nameplate or as shown below. Complete electrical connections as indicated.
WARNIN
G:
A
g
round w
i
re must be connected from the motor hous
i
n
g
to a su
i
table electr
i
cal
g
round.
OPERATION
1. After electrical connections are completed, remove belts, energize the motor momentarily to ensure proper
motor rotation. Re-install the belts.
2. With the air systems in full operation and all ducts and access panels attached, measure current input to the
motor and ensure that it is less than the rated full load motor amperage.
3. Proper adjustment to the belt tension is critical for quiet efficient operation.
MAINTENANCE
Ensure power supply
i
s d
i
sconnected and locked out pr
i
or to perform
i
n
g
ma
i
ntenance
1. Inspect and tighten the wheel hub bolts after the first 50 to 100 hours of operation and periodically thereafter.
2. Follow the motor manufacturer’s instructions for motor lubrication. Remove any excess lubrication.
3. Drives:
A
– Check belt tension and alignment, replace cracked or worn belts. If it is necessary to replace one
belt on a multiple belt drive, replace all the belts with a matched set.
B
– Under normal conditions, no re-lubrication is the rule. The bearing lubricant cavity is 1/3-1/2 filled as
shipped from the factory. Never lubricate new bearings.
C
– Tighten set-screws on sheaves, wheel and bearing locking collars.
4. Clean the blower wheel periodically. Material build up on the blades can cause wheel imbalance which, may
result in wheel or motor bearing failure.
5. Generally, bearings should be lubricated at six to twelve month intervals. Recommended lubricants are: a)
Imperial Oil – ESSO Beacon 325, or b) Shell Oil – Alvania Grease #3. A small amount of grease should be
added slowly when the shaft is rotating.
Note
:
Over
g
reas
i
n
g
may cause dama
g
e to the bear
i
n
g
. Avo
i
d
ruptur
i
n
g
the bear
i
n
g
seal.
6. To reinstall replacement ball bearings press the locking collar against the inner ring of the bearing and turn in the
direction of the shaft rotation until engaged. Insert a drift pin into the pin hole and tap lightly to set. Tighten set-
screw on locking collar firmly.
7. Should further service to the blower be necessary, refer to the exploded view illustration (see Figure 4).
