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BCXC-SVX01B-EN 63
Maintenance
Maintenance Procedures
Perform the following maintenance procedures to ensure proper unit operation.
Air Filters
Always install filters with directional arrows pointing toward the fan.
Fan Bearings
Fan bearings are permanently sealed and lubricated and do not require additional lubrication.
Fan Motors
Inspect fan motors periodically for excessive vibration or temperature. Operating conditions will
vary the frequency of inspection and lubrication. Motor lubrication instructions are on the motor
tag or nameplate. If for some reason these instructions are not available, contact the motor
manufacturer. Some motor manufacturers may not provide oil tubes on motors with permanently
sealed bearings.
ƽ WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
Before lubricating the motor:
1. Turn the motor off and disconnect power to the unit to ensure the motor doesn’t accidentally
start.
2. Use a No. 10 SAE, non-detergent automotive type oil. Do not over-oil.
Sheave Alignment
To prevent interference of the fan frame with the belt, make sure that the belt edge closes to the
motor has the proper clearance from the fan frame as shown in Figure 15, p. 64.
Align the fan and motor sheaves by using a straight–edge or taut string, as shown in Figure 16,
p. 64. The straight-edge must be long enough to span the distance between the sheave outside
edges.
When the sheaves are aligned, the straight–edge will touch both sheaves at points A through D,
as shown in Figure 16. For uneven width sheaves, place a string in the center groove of both