ACORN AQUA A112408B/S-VR-UBL Istruzioni per l'installazione, il funzionamento e la manutenzione - Pagina 5

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TROUBLE SHOOTING:

IMPORTANT: BEFORE MAKING ANY OF THE REPAIRS LISTED, MAKE SURE THE WATER

COOLER IS DISCONNECTED FROM THE ELECTRICAL SUPPLY AND THE WATER SUPPLY

VALVE IS SHUT OFF.

1. Adjustments

a. Cartridge – The water flow can be adjusted through the pushbutton using a straight blade

screwdriver and turning clockwise to increase flow and counterclockwise to decrease flow.

b. Cold Water Thermostat – The water temperature can be adjusted using a slotted screwdriver and

turning clockwise to make colder and counterclockwise to make

warmer.

c. Bubbler Stream – Bubbler can be rotated slightly to direct the stream backwards or forwards. Adjust

the stream to minimize splashing. Splashing may occur from bubbler stream if the unit is not level.

Shim lower mounting points, if necessary, to level cooler.

2. Compressor Does Not Run

a. Check the electrical receptacle for power and correct voltage. The incoming voltage must be within

10% of the rated voltage on the serial nameplate.

b. The cold thermostat is accessible by removing the bottom access cover. If the cold thermostat

capillary bulb loses its charge or becomes kinked it will fail in the open position causing a disruption

of power to the compressor. Unplug the water cooler and using and ohm meter check for continuity

across the two electrical terminals on the

thermostat. Install a new thermostat if there is no continuity.

c. Check for loose wires within the compressor box. The incoming power leads must be connected to

the overload and relay.

d. If all components check positive for continuity then test the wiring harness plug for continuity to see

if there is a broken wire within the wiring harness insulation.

3. Compressor Runs – Water Is Warm

a. The most common cause for a water cooler to run without producing cold water is a loss of

refrigerant. The water cooler must be taken to a certified refrigerant technician for repairs.

b. Make sure the condenser fan motor is operative. The fan blade must turn freely to help remove the

heat of compression.

c. An incorrect refrigerant charge, restriction or defective compressor (not pumping) will also cause

the compressor to run without producing cold water. All these signs indicate a problem within the

refrigeration system and the water cooler must be checked by an authorized service company.

4. Compressor Cycling On Overload Protector

a. A dirty condenser or a blocked fan will cause a high head pressure and frequent cycling of the

overload protector.

b. Check the incoming voltage to make sure it is within 10% of the serial nameplate rating.

c. A restriction or moisture in the system will also cause intermittent cycling. A certified refrigeration

mechanic should be contacted in this situation.

d. Change the overload or relay if defective.

5. Noisy Operation

a. Check to make sure the fan blade is rotating freely.

b. Make sure the water cooler is correctly mounted to the wall. Absence of the two lower mounting

bolts may cause excess noise and vibration.

c. Check the compressor mounting to make sure the pins and clips are not rattling. If the compressor

appears to be noisy internally, it must be replaced.

6. Restricted Or No Water Flow

a. Ensure water supply service stop valve is fully open.

b. Verify minimum 20 psig supply line flow pressure.

c. Check for twists or kinks in bubbler tubing.

d. Check the water inlet strainer. Sediment from the main supply can get trapped in the screen along

with installation materials such as pipe dope and flux. The screen should be cleaned and checked

on a regular basis and replace if needed.

e. The cartridge valve located in the water control assembly or bubbler can also become clogged with

foreign material. The cartridge valve can only be replaced and not repaired.

f. The water cooler may also develop a freezing condition in which the water will become frozen

inside the evaporator coil. This indicates a refrigeration problem or thermostat failure in which case

the water cooler needs to be checked by a qualified technician.

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