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DANGER: Rotating equipment
will cause severe personal injury
or death to persons who come in
contact. Do not perform any service,
maintenance, or inspection on or
near the fans, motors, and drives,
or inside the unit without first
ensuring that the fans and pump
motors are disconnected, locked
out, and tagged out.
NOTE: There should be no "chirp"
or "squeal" when the fan motor is
started.
Figure 5a. Belt Tension with a Straight Edge
14
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Fan Drive System
BALTIDRIVE
Power Train and Independent Fan
®
The BALTIDRIVE
Power Train consists of a solid-
®
backed, multi-groove, neoprene/polyester belt rated
for cooling tower service, and corrosion resistant
sheaves. These components provide high reliability
with low maintenance requirements.
The independent fan option consists of one fan motor
and drive assembly for each fan to allow independent
operation, adding redundancy to models with more
than one fan.
The BALTIGUARD™ Fan System consists of two
standard single-speed fan motors and drive assemblies. One drive assembly is sized for full
speed and load, and the other is sized for approximately 2/3 speed and consumes only 1/3
the design horsepower. This provides motor redundancy and the greatest level of reliability.
Inspection & Maintenance
These drives require a periodic check of the belt condition and, when necessary, tension
adjustment. The recommended service intervals are as follows:
• Initial Start-up: Servicing is not required prior to initial unit start-up. The drive has
been tensioned and aligned at the factory.
• Seasonal Start-up: Readjust the belt tension (if required).
• Operation: After the first 24 hours of operation, readjust the belt tension on a new unit
start-up or installation of a new belt. Thereafter, check the belt condition monthly, and
adjust tension as necessary. Readjust tension at least once every three months.
Figure 4. BALTIGUARD™ Fan System
Figure 5b. Belt Tension with a Tape Measure
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