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TROUBLESHOOTING GUIDE: 

Should an obvious problem occur with your cooler consult the following table. If you 

cannot correct the problem, or if it persists, contact qualified service personnel.

Adjust float to 2 1/2“ water depth

Free float from obstruction 

Replace float assembly

Remove obstruction

Replace water pump

Locate and free obstruction

Clear debris from distributor

Replace switch

Repair or replace non-functional wiring

Turn on water supply

Check power receptacle and cord

Adjust belt tension

Replace motor

Replace switch

Replace belt

Open windows to increase air flow

Adjust belt tension or replace is needed

Replace pads

Check voltage

Adjust belt tension

Oil or replace bearings

Oil bearings

Adjust to full load ampere rating on motor 

Replace motor

Reposition wheel

Tighten set screws

Open doors and windows to increase ventilation

Float valve out of adjustment

Float movement obstructed

Float valve non-functional

Pump intake clogged

Non-functional water pump

Clogged water line

Water distributor clogged

Non-functional switch

Non-functional wiring

Water turned off to cooler

Electrical power disconnected

Belt too loose or too tight

Non-functional motor

Non-functional switch

Broken belt

Low voltage

Excessive belt tension

Blower shaft tight or locked

Bearings dry

Motor pulley diameter too large

Non-functional motor

Blower rubbing on housing

Motor sheave or blower set screws loose

Inadequate exhaust

Insufficient air exhaust

Belt too loose

Pads plugged

Water draining from unit

Dry pads

Motor does not start or no air delivery

Motor cycles on & off

Noisy operation

Excessive humidity in house

Inadequate air delivery

PROBLEM / SYMPTOM

POSSIBLE CAUSE

CORRECTIVE ACTION

6    Trophy Ducted Evaporative Cooler Use and Care Manual

Changing Cooler Pads

CAUTION: 

Disconnect all electrical power to the cooler 

before attempting to install, open, or service your cooler. 
More than one disconnect may be required to de-energize 
the equipment for servicing. If the cooler is 
thermostatically controlled, the thermostat is not to be 
used as the power supply disconnect, as it may reset and 
start the unit unexpectedly.

The condition of your cooler pads should be checked at least once a 
year; at the beginning of the season is best. However, your pads may 
need to be checked more frequently, depending on local air and water 
conditions. For instance, in areas where mineral content of the water 
is high or the air is dusty, deposits may build up in the cooler pads, 
restricting airflow. Clean or replace pads as follows:

1. Disconnect power from unit. 

2. Remove pads from wet section cabinet as follows:

a.

Remove inlet louver panels from cabinet.

b.

Remove top pan from cabinet.

c.

Remove water distributor cover and tube assembly.

d.

Remove pads by tilting slightly forward and carefully lifting up 
and out. If passages are clogged or pad is dirty, hose off inlet 
face of pad. Light, 

gentle

 brushing of the inlet edges of the

pad with a stiff bristle brush (do not use a wire brush) will not 
harm the pad and will remove more stubborn scaling. 

e.

If necessary, replace with new pads, available from your
dealer. Aspen, expanded paper or other types of evaporative 
cooling pads will not work and will void your warranty.

3. Using a mild detergent, wash dirt and scale from the inside of the 

wet section cabinet. Wire brushing is not recommended. If finish 
is damaged or rusting is noted, repair as noted in the “Touch-Up” 
section. Rinse with fresh water.

4. Reinstall pads, making sure they

are positioned correctly (painted
stripe on pad placed to the bottom,
facing outside).

5. Reinstall water distributor cover and 

tube assembly.

6. Reinstall top pan and inlet louver

panels.

REPLACEMENT PARTS

When ordering replacement parts, always refer to the serial and 
model number of your cooler. Use the part numbers listed in the 
accompanying parts list, as illustrated in the diagrams for your model.

Winter Shut Down:

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 cooler
and the water supply so it does not freeze.

- Disconnect 

power from cooler during extended periods of non-use.

Summary of Contents for AEROCOOL TD3801

Page 1: ...ing cooler More than one disconnect switch may be required to de energize the equipment for servicing Do not remove access panels while cooler is running this may cause the blower fan motor to overloa...

Page 2: ...airflow to the areas that are occupied during different times of the day or night example living room windows during the daytime bedroom windows at night To eliminate a rush of warm air when starting...

Page 3: ...equipment for servicing If the cooler is thermostatically controlled the thermostat must not be used as the power supply disconnect as it may reset and start the unit unexpectedly Even while routinely...

Page 4: ...he water level To prevent siphoning of the water make sure that the bleed off tee is a GENERAL INSPECTION Initial Start up or Annual Inspection CAUTION Disconnect all electrical power to the cooler be...

Page 5: ...g Drain and clean reservoir avoid draining water onto a roof mineral build up or damage to roof may occur Regular maintenance and periodic inspection is the key to long and successful service from you...

Page 6: ...ly controlled the thermostat is not to be used as the power supply disconnect as it may reset and start the unit unexpectedly The condition of your cooler pads should be checked at least once a year a...

Page 7: ...a paramontar operarinspeccionar manteneryencontrarcualquierfallaensuenfriador La primera secci n de Instalaci n e Inicio es especialmente para el instalador La secci n segunda Mantenimiento contiene i...

Page 8: ...ctores de cocina etc ya que repugnantes olores o vapores pueden ser inducidos por la unidad NOTA Cuando los enfriadores son instalados dentro de la jurisdicci n de los c digos de edificaci n de la Ciu...

Page 9: ...Cuando no pueda asegurar los interruptores escriba una nota que resalte a la vista en la caja de servicio No prender el suministro de corriente hacia la unidad hasta que la instalaci n o trabajo de se...

Page 10: ...uidos extra os P Condici n de la banda tensi n alineamiento P Revise la montadura del motor tornillos del gabinete tornillos opresores en las poleas y de la turbina apretados 4 Trophy Enfriador Evapor...

Page 11: ...ve de un bueno y prolongado servicio de su Trophy enfriador El enfriador debe recibir servicio completo a menos una vez por a o y m s seguido si las condiciones lo requieren ambiente polvo uso constan...

Page 12: ...ra aumentar la ventilaci n V lvula de flotador fuera de ajuste Movimiento del flotador obstruido V lvula no funciona Entrada de agua de la bomba tapada Bomba no funciona Linea de agua tapada Canaleta...

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