12
LS Series Coolers and Condensers
Motor Installation
(1.2m and 1.6m
wide
models
)
1. Study Figure 20 before installing the motor bases on the unit.
2. Insert the lifting device into the lifting hole A provided in the motor base.
3. Lift the motor/motor base assembly and align holes B to B1 and C to C1. Insert the 13mm diameter pivot bolts with flat
washer D. Install flat washer, nut and jam nut E on the pivot bolt. DO NOT OVERTIGHTEN.
4. Insert the J-bolts F into holes G. Install flat washers and cotter pins H. Place nuts, lock washers, and flat washers J on the
threaded portion of J-bolts. Their final location will be behind the motor base installed next.
5. Insert the J-bolts into the holes K in the motor base. Install flat washers, lock washers, and nuts L. Remove the lifting device
from the motor base and position motor base toward the unit for belt installation.
6. Install the belts M around the fan sheave and motor sheave (Figure 21). Tighten belts by adjusting nuts on J-bolts. Do not
over tension the belts. When the belts are properly adjusted, the deflection at the center of the belt should be approximately
13mm with moderate hand pressure.
7. Measure the distance from the motor base to the J-bolt mounting angles to ensure that both sides of the base are located the
same distance from the unit. This should ensure that the sheaves are properly aligned since they were pre-set at the factory.
8. As a final check, lay a straight edge from sheave to sheave (Figure 22). There should be 4 point contact. Adjust the position
of the motor sheave if necessary.
9. To install the motor guard N, line up the holes and fasten with the self-tapping screws P (Figure 21). Check to ensure that the
motor guard does not make contact with the drive sheave or belts.
Figure 20 – Motor Installation
MOTOR
SHEAVE
FAN
SHEAVE
ADJUST POSITION
OF MOTOR SHEAVE
(only if necessary)
Figure 21 – Motor Guard and Powerband Belt Installation
Figure 22 – Sheave Alignment Check
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