Essick Air AUA5112 - Manual (Page 4)

4 110498-2
• Check belt tension. A 3 lb. force
should defl ect the belt 3/4 inches (see
Fig. 11). Readjust belt if needed.
• Oil bearings. The blower bearings and
cooler motor in this unit should be oiled
with a few drops of non-detergent 20/30
weight oil once each year. The motor
does not need oil if it has no oil lines for oiling. Motors that have no
oil lines 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.
• Clean pump. Cleaning the
pump is necessary once a year
at start-up. For your safety,
turn unit off and unplug motor
and pump. Remove the pump
from the mount slot. Remove
the base of the pump as shown
in Fig. 12. Clean the pump and
turn the impeller to ensure free
operation. Remove the pump
Fig. 11
3 Lb.
3/4 Inches
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.
• Check bleed-off valve to be sure it is not clogged.
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 particularly
at the end of the season. Keep the water line disconnected from both
the unit and water supply so that it does not freeze.
• Unplug motor and pump. When cooler is not used for extended
periods unplug the motor and pump from inside cooler.
• Cover unit. To protect the life of the fi nish, a cover for the unit is
suggested in extended periods of non use.
By following the operating, installation, and maintenance suggestions
as outlined, you can get many years of efficient 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.
Problem Possible Cause Remedy
Failure to
start or no
air delivery
Inadequate
air delivery
with cooler
running
Water drain-
ing onto
roof
Musty or
unpleasant
odor
1. No electrical power to
unit
• Fuse blown
• Circuit breaker tripped
• Electric cord damage
2. Belt too loose or tight
3. Motor overheated
• Belt too tight
• Blower bearings dry
• Motor pulley diameter
too large
4. Motor locked
1. Insuffi cient air exhaust
2. Belt too loose
3. Pads plugged
4. Motor underloaded
1. Float arm not adjusted
properly
2. Overfl ow asembly leak-
ing
1. Stale or stagnate water
in cooler
1. Check power
• Replace fuse
• Re-set breaker
• Replace cord
2. Adjust belt tension
3. Determine cause of
overheating
• Adjust belt tension
• Oil blower bearings
• Adjust pulley to cor-
rect diameter
4. Replace motor
1. Open windows or
doors to increase air
fl ow
2. Adjust belt tension or
replace if needed
3. Clean pads
4. Adjust pulley
1. Adjust fl oat
2. Tighten nut and over-
fl ow pipe
1. Drain pan and clean
pads
Troubleshooting Guide
Problem Possible Cause Remedy
1. Low voltage
2. Excessive belt tension
3. Blower shaft tight or
locked
4. Bearings dry
5. Motor pulley diameter
too large causing motor
overload
1. Bearings dry
2. Wheel rubbing blower
housing
3. Loose parts
1. Inadequate exhaust in
house
2. Pads not wet
• Pads plugged
• Dist. tube holes clogged
• Pump not working prop-
erly
1. Insuffi cient air exhaust
1. Check voltage
2. Adjust belt tension
3. Oil or replace bear-
ings (Unplug unit)
4. Oil bearings
5. Adjust pulley so full
load ampere rating of
motor is not exceeded
1. Oil bearings
2. Inspect and realign
(Unplug unit)
3. Tighten loose parts
1. Open windows or
doors to increase air
fl ow
2. Check water distribu-
tion system
• Clean pads
• Clean
• Replace or clean
pump (Unplug unit)
1. Open doors or win-
dows
Motor
cycles on
and off
Noisy
Inadequate
cooling
Excessive
humidity in
house
Impeller
Remove
Base
Fig. 12