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Lubricate the bearings as follows:
Initial Start-Up: Normally, no lubrication is required since the bearings have been lubricated at the factory prior
o
to shipment. However, if the unit has been stored at the job site for more than three months, both bearings
should be lubricated with new grease before initial operation. When lubricating, purge the old grease from the
bearing by gradually adding grease until a bead of new grease appears at the seal on the underside of the
bearing.
Seasonal Start-Up: Purge the bearings with new grease prior to start-up.
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Operation: Purge the bearings with new grease every three months while in operation.
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Extended Shutdown: Purge the bearings with new grease prior to any prolonged storage or downtime.
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Locking Collars
Each eccentric locking collar should be checked quarterly to ensure that the inner bearing race is secured to the fan shaft. The
locking collar can be set using the following procedure (see Figure 9):
•
Loosen the set screw.
•
Using a drift pin or center punch, tap the collar (in the hole provided) tangentially in the direction of rotation while holding
the shaft.
•
Retighten the set screw.
Vertex™ Evaporative Condenser Operation & Maintenance Manual – Component Maintenance Procedures
Figure 9. Locking Collar Assembly
Locking Collar
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