Instructions / Assembly

COOLER
MOTOR
INSTRUCTIONS EVAPORATIVE
COOLER MOTOR
WARNING: FAILURE TO FOLLOW
INSTRUCTIONS AND USE SAFE ELEC-
TRICAL PROCEDURES COULD RESULT
IN SERIOUS INJURY SUCH AS SHOCK
OR ELECTROCUTION.
SAFETY PRECAUTIONS
:
1. Disconnect electrical power at
source before working on or
near a motor or its connected
load.
2. This motor must be grounded
by attaching the power supply
green ground wire to the motor
terminal green screw.
3. Caution: Motor may stop and
restart without warning.
If motor is “overloaded”, it will
become unusually hot and the
automatic internal overload
switch will cause the motor to
stop. The motor will then
automatically restart after
cooling down. An “overloaded”
motor will cycle on and off. If
this occurs, see Motor Pulley
Adjustment section.
4. Install all wiring, fusing and
grounding in accordance with
National Electrical Code, local
requirements, and according to
cooler manufacturer’s instruc-
tions.
5. Keep all parts of body and loose
clothing clear from belts,
pulleys and other exposed parts
at all times.
MOTOR INSPECTION
1. Examine motor thoroughly to be
sure it was not damaged in
shipment.
2. Check the motor shaft. It should
rotate freely when turned by hand.
3. Check nameplate rating. Voltage
and frequency must match the
electrical power source. Motor
H.P. must be suitable for your
cooler size.
MOTOR PULLEY SELECTION
The motor pulley must
be the same
size and type recommended by cooler
manufacturer. Do not
use a larger
pulley size. Recommended motor
pulley sizes are:
1/3 HP Motor:
3¼" adjustable, or
2¼" to 2
½" fixed
with
½" bore.
1/2 HP Motor:
3
½" to 3¾"
adjustable, or 2½"
to 2
¾" fixed with ½"
bore.
3/4 HP Motor:
3
¾" adjustable, or
3" to 3
¼" fixed with
½" bore.
1 HP Motor:
(Single Inlet
Coolers Only)
4" adjustable, or
3¼" to 3
½" fixed
with 5/8" bore.
IMPORTANT: Too large of a motor
pulley will “overload” motor and cause
it to cycle on and off. If this occurs,
see Motor Pulley Adjustment section.
INSTALLATION INSTRUCTIONS
1. Motor Mounting:
Place motor in motor mounting bracket
with vent holes down and motor label
up. Be sure groove in rubber mounting
rings seats securely on mounting
bracket. Tighten clamps.
2. Motor Pulley and Blower Pulley
Alignment:
Pulleys must be aligned per Figure 1.
If necessary, loosen pulley set screws
with 5/32 Allen wrench. Each set
screw must seat securely on flat of
shaft.
Align Motor and Blower Pulley
with V-Belt in Place
(Figure 1)
3. Belt Tension:
Adjust belt to deflect 1/2 to 3/4 inch at
center of span as per Figure 2.
Readjust belt tension after any pulley
adjustment. Replace worn or damaged
belts.
Adjust Belt Tension
(Figure 2)