Wiring Diagram; Troubleshooting Guide - Champion Essick WCM28 Manual De Instrucciones

• Clean pump. Cleaning the pump is necessary once a year at
start-up. For your safety, turn unit off and unplug from power
receptacle. Remove the pump from the mount slot. Remove the
base of the pump (Fig. 7). Clean the pump and turn the impeller
to ensure free operation. Remove the pump spout and check for
any blockage. After cleaning,
reinstall the base onto the pump.
Press fi rmly to make sure it is
secure. Reattach the pump to
the mount in the cooler using
the plastic retainer to ensure that
the pump will not overturn. Do
not forget to replace the spout
and water delivery tube onto the
pump outlet.
• Oil motor. The cooler motor in this unit
should be oiled with a few drops of non-
detergent 20/30 weight oil once each year.
The oil ports are located on each side of
the motor (Fig. 8). Motors that have no oil
ports are lifetime oiled at the factory and
require no further oiling for the life of the
unit.
CAUTION:
Do not over oil. Over oiling can cause motor burn
out, due to excessive oil getting into motor winding.
Winter Shut Down
• Drain water. Always drain all of the water out of the cooler and
water supply line when not in use for prolonged periods, and
par ticularly at the end of the season. Keep the water line discon-
nected from both the unit and water supply so that it does not
freeze.
Problem Possible Cause
Failure to 1. No electrical power to
start or no unit
air delivery • Fuse blown
• Circuit breaker tripped
• Electric cord damage
2. Motor overheated
• Bearings dry
3. Motor locked
Inadequate 1. Insuffi cient air exhaust
air delivery
with cooler
running 2. Pads plugged
Inadequate 1. Inadequate exhaust in
cooling house
2. Pads not wet
• Pads plugged
• Open spots in pads
• Trough holes or Dis-
tributor system clogged
• Pump not working
properly
110499
Remove
Base
Impeller
Fig. 7
Oil
Fig. 8

Troubleshooting Guide

Remedy
1. Check power
• Replace fuse
• Reset breaker
• Replace cord
2. Determine cause of
overheating
• Oil bearings
3. Replace motor
1. Open windows or
doors to increase air
fl ow
2. Replace pads
1. Open windows or
doors to increase air
fl ow
2. Check water distribu-
tion system
• Replace pads
• Repack pads
• Clean
• Replace or clean
pump (Unplug unit)
• Cover unit. To protect the life of the fi nish, a cover for the unit is
suggested in extended periods of non use.
• Unplug unit from power supply during extended periods of non
use.
By following the operating, installation, and maintenance sugges-
tions as outlined, you can get many years of effi cient and satisfactory
service from your cooler. In the event additional information is
desired, your dealer will be more than glad to assist you in every
possible way.

Wiring Diagram

Blower
Motor
Pump
Motor
Problem Possible Cause
Motor 1. Low voltage
cycles on 2. Motor bearings dry
and off 3. Wheel rubbing blower
housing
4. Faulty motor
Noisy 1. Motor bearings dry
2. Wheel rubbing blower
housing
3. Loose parts
Excessive 1. Inadequate exhaust
humidity in
house
Musty or 1. Stale or stagnate water
unpleasant in cooler
odor 2. Pads not wetting
properly
• Trough holes clogged
• Pump not wetting
properly
• Insuffi cient water fl ow
over pads
White-Com.
Switch
Black-Hi
4
B
3
Plain
Plain
2
A
1
Red-Lo
Ribbed-Com.
Ribbed-Com.
Green-Ground
Remedy
1. Check voltage
2. Oil bearings
3. Inspect and realign
(Unplug unit)
4. Replace motor
1. Oil bearings
2. Inspect and realign
(Unplug unit)
3. Tighten loose parts
1. Open doors or win-
dows
1. Drain pan and clean
pads
2. Check water distribu-
tion system
• Clean
• Replace or clean
pump (Unplug unit)
• Clean distribution
system and trough
openings
3