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KAH Operation & Maintenance Guide
Page: 38 of 88
FIGURE 36 - ADJUSTABLE MOTOR BASE (TOP MOUNT)
MOTOR BASE
MOUNTING HARDWARE
MOTOR BASE ADJUSTMENT
SCREWS (DRIVE SIDE)
MOTOR BASE
ADJUSTMENT SCREWS
(OPPOSITE DRIVE SIDE)
MOTOR BASE
MOUNTING
HARDWARE
MOTOR
MOUNTING/ADJUSTMENT
HARDWARE
MOTOR
MOTOR
MOTOR’S
SHEAVE
KEYWAY
KEYWAY
NOTE 3
FAN’S SHEAVE
FAN’S BEARING
STRAIGHT EDGE
NOTE 2
NOTE 3
PLENUM
FAN
MOTOR BASE
MOTOR BASE
SUPPORT RAILS
DRIVE SIDE
(FIG. 1)
PARALLEL MISALIGNMENT
(FIG. 4)
PARALLEL ALIGNMENT
(FIG. 5)
DRIVE SIDE
(FIG. 2)
SECTION 3 - MAINTENANCE (CONTINUED)
Notes
1. The sheaves should be centered on the shaft’s keyway. Sheave can be closer to the bearing, as long as the sheaves hub is able to fully engage
with the key.
2. Check for parallel misalignment by placing a straight edge across the outer face of the sheaves (Figure 5). Straight edge is to be long enough
that it extends past both sheaves.
3. If the sheaves are misaligned (Figure 4), loosen the motor’s mounting hardware and slide the motor forward (or back) to bring the sheaves into
alignment (Figure 5), Then re-tighten hardware.
