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12
Fan Drive System
Model Specific Fan Drive System Descriptions
Direct Drive Motor
[Model PT2-0412]: Factory mounted direct drive system with premium
efficiency totally enclosed motors (
Figure 2a
).
Externally Mounted Motor
[Models PT2-0709, PT2-0809, PT2-0812, and PT2-0814]:
A BALTIDRIVE
®
Power Train belt drive system with a premium efficiency totally enclosed
motor mounted outside the airstream is provided on these units (
Figure 2b
).
Internally Mounted Motor
[Models PT2-1009, PT2-1012,PT2-1212, PT2-1214, and
PT2-1218]: A BALTIDRIVE
®
Power Train belt drive system with a premium efficiency
totally enclosed motor mounted inside the airstream is provided on these units (
Figure 2c
).
Inspection & Maintenance
Direct Drive System
Periodically check the rotation of the fan and motor assembly. No adjustments are
necessary.
BALTIDRIVE
®
Power Train
BALTIDRIVE
®
Power Train requires a periodic check of the belt condition and, when
necessary, tension adjustment. The recommended service intervals are as follows:
•
Initial Start-up:
–
Externally Mounted Motor:
The motor base assembly has been pre-aligned at the
factory. Mount the motor base assembly to the unit and verify alignment. Install the
belt and follow the belt tensioning directions on
page 13
[PT2-0709, PT2-0809,
PT2-0812, and PT2-0814].
–
Internally Mounted Motor:
The drive has been tensioned and aligned at the factory.
However prior to initial startup, check belt tension [PT2-1009, PT2-1012,
PT2-1212, PT2-1214, and PT2-1218].
•
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 2b.
Externally Mounted Motor
Figure 2c.
Internally Mounted Motor
Figure 2a.
Direct Drive Motor
