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rba RBA2770 Series Installation, Operation And Maintenance Instructions page 3

Wall mounted 'compact' water coolers

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Installation
1. Check rough-in drawings against supplied product.
2. Anchor water cooler to wall through anchor clips on the bottom of the base [provide 102mm minimum clear space on
fixture sides to allow for proper ventilation through cabinet louvers].
3. Remove the front panel from the water cooler by taking out the screws on each side at the bottom front, press the panel
sides together at the bottom so that front panel clips disengage from the housing sides and carefully pull forward and
down. Set panel aside in a safe place where it will not be damaged.
4. Make up trap waste connection.
5. Flush the supply line to remove all foreign debris.
6. Connect water supply to water cooler with 1/2" BSP.
7. Turn on building water supply and check all connections for leaks.
8. Air within the water supply will cause an irregular bubbler outlet stream until purged out by incoming water. Covering the
bubbler with a clean cup [or similar object] is recommended when first activating water cooler. Depress push button until
steady water stream is achieved.
9. Adjust bubbler to the site requirements;
9a. If water flow requires adjustment, insert a narrow slotted screwdriver in the center of the button actuator.
Turning clockwise will increase flow and turning counterclockwise will decrease flow.
9b. The water temperature can be adjusted using a slotted screwdriver in the cold water thermostat and turning
clockwise to make colder and counterclockwise to make warmer.
9c. Bubbler can be rotated slightly to direct the stream backwards or forwards.
10. Plug water cooler into electrical outlet and make sure unit begins to function.
11. Re-attach bottom cover to water cooler with screws furnished.
Troubleshooting
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.
Problem
Compressor Does Not Run
Compressor Runs –
Water Is Warm
3 of 4
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Probable cause
Check the electrical receptacle for power and correct voltage. The incoming voltage
must be within 10% of the rated voltage on the serial nameplate.
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 an ohm meter check for continuity across the two electrical terminals on the
thermostat. Install a new thermostat if there is no continuity.
Check for loose wires within the compressor box. The incoming power leads must be
connected to the overload and relay.
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.
Make sure the condenser fan motor is operative. The fan blade must turn freely to
help remove the heat of compression.
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 authorised service company
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
Australia 1300 788 778 www.rba.com.au | New Zealand 0800 722 111 www.rbagroup.co.nz

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