rba RBA2731-032-UG Manual

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
Australia 1300 788 778 www.rba.com.au | New Zealand 0800 722 111 www.rbagroup.co.nz1 of 6
RBA2731-032-UG Wall mounted ‘Compact’, grey powder coat water cooler, 30L/hr
RBA2732-032-UG Wall mounted ‘Compact’, stainless steel water cooler, 30L/hr
RBA2732-132-UG Wall mounted ‘Compact’, stainless steel water cooler, with glass ller, 30L/hr
MODELS WALL MOUNTED ‘COMPACT’ WATER COOLERS
As improvements in the design and performance of RBA products are continuous, specications may be subject to change without notice.The illustrations and descriptions herein are applicable to production as of
the date of this Installation Instructions Sheet. Revised 08/22 © 2022 by RBA Group II/RBA2731-032-UG/RBA2732-032-UG/RBA2732-132-UG/0822
*RBA2732-032-UG Shown

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
Australia 1300 788 778 www.rba.com.au | New Zealand 0800 722 111 www.rbagroup.co.nz2 of 6
Components Supplied by Others
• 40mm Trap
• Stop valve
• Electrical outlet
• Mounting xings
Hydraulic Requirements
Operating pressure: 200-500kPa
Inlet: G1/2B
Outlet: 40mm BSP Waste
Water Temp: 4 - 32
Provide 102mm minimum clear space on xture sides to allow for proper ventilation through cabinet louvers.
Due to cold waste water, we recommend the trap supplied by installer be insulated to prevent excessive condensation.
Rough-in and Dimensions
Prior to roughing-in consult with local, state, and federal codes for proper mounting height. Installation to be done in
accordance with AS/NZS3500.1 and AS/NZS3500.2
127338
465
235 235
470
FFL
73 162 162 73
470
454
778
CL
108
345514620134
51
ø6.5
ø10
403
G1/2" INLET
TRAP OUTLET
TO SUIT 40mm WASTE
152338
838
35
470
Pipe Installation [with bottle ller option]

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
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Installation
1. Check rough-in drawings against supplied product.
2. Mount hanger bracket to wall. Hanger bracket MUST be securely anchored with fasteners sufcient to support 3 times
the weight of the water cooler.
3. Remove the bottom cover from the water cooler and set aside in a safe place. Place the screws in a safe place for re-use
in later stages of installation.
4. Hang the water cooler on the hanger bracket, ensuring the bracket tabs engage AND seat in the slots in the back of the
water cooler. Verify the Water Cooler is level, straight and plumb.
5. Anchor water cooler to wall at other mounting points in Base. If necessary, shim lower rear mounting points to level unit.
6. Thoroughly ush the supply line and then connect water supply to water cooler.
7. Make up trap waste connection.
8. Flush the supply line to remove all foreign debris.
9. Connect water supply to water cooler with 1/2” BSP
10. Turn on building water supply and check all connections for leaks.
11. 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 rst activating water cooler. Depress push button until
steady water stream is achieved.
12. Adjust bubbler to the site requirements;
13. Plug water cooler into electrical outlet and make sure unit begins to function.
14. Assemble bottom cover to water cooler with screws furnished.
Cleaning & Maintenance
1. Motors have lifetime lubrication and do not require scheduled maintenance.
2. Excess dirt or poor ventilation will cause the compressor overload protector to turn the compressor off and it will cycle
on and off with no cold water coming out of bubbler. Periodically clean with vacuum cleaner, air hose or brush the
condenser ns and cabinet ventilation louvers. In environments where dirt and dust is more prevalent, clean more
frequently.
3. Periodically remove access panels and clean out in-line strainer.
4. Do NOT use harsh chemicals, abrasive or petroleum based cleaners. Use of these will void RBA warranty.
5. Exterior panels can be cleaned using mild household detergents or warm, soapy water. Extra care must be used cleaning
chrome plated items and mirror nished stainless steel. They can scratch easily and should only be cleaned using a
clean, soft cloth and mild soap with water or a mild glass cleaner
Spare Parts
RBA Code No. Description
RBA7003-095-001 Valve Assembly
RBA7003-099-000 Pushbuttton
12a. If water ow requires adjustment, insert a slotted narrow blade screwdriver in the centre of the button actuator.
Turning clockwise will increase ow and turning counterclockwise will decrease ow.
12b. 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.
12c. Bubbler Stream – Bubbler can be rotated slightly to direct the stream backwards or forwards.

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
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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 Probable cause
Compressor Does Not Run Check the power supply cord.
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, 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. If all components check positive for continuity, then test
the wiring harness plug for continuity.
Compressor Runs –
Water Is Warm
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 certied 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 authorized
service company.
Noisy Operation Check to make sure the fan blade is rotating freely.
Make sure the water cooler is correctly mounted to the wall. Absence of the two lower
mounting bolts may cause excess noise and vibration.
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.
Continued....

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
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Restricted Or No Water Flow Ensure water supply service stop valve is fully open.
Verify minimum 200 kPa supply line ow pressure.
Check for twists or kinks in bubbler tubing.
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 ux. The screen should be cleaned
and checked on a regular basis and replaced if needed.
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.
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 qualied technician
Check ow adjustment. If necessary, adjust bubbler to site requirements, see Installation
Step #12 [Page 3].
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 qualied technician.
Compressor Cycling on
Overload Protector
A dirty condenser or a blocked fan will cause a high head pressure and frequent cycling of
the overload protector.
Check the incoming voltage to make sure it is within 10% of the serial nameplate rating.
A restriction or moisture in the system will also cause intermittent cycling. A certied
refrigeration mechanic should be contacted in this situation.
Change the overload or relay if defective.

INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SYDNEY | MELBOURNE | BRISBANE | PERTH | AUCKLAND
Australia 1300 788 778 www.rba.com.au | New Zealand 0800 722 111 www.rbagroup.co.nz6 of 6
Pushbutton Installation
Note: ttings and tube should be kept clean, bagged and undamaged prior to installation.
Figure 2
1. Cut to t length of 1/4” PE Tubing and remove any burrs or sharp edges. Ensure that the outside diameter is free from
score marks. Tube ends should be square.
2. Firmly and fully insert the Tubing end into the Push-In Fitting up to the Tube Stop located approximately 1/2” [13mm]
deep.
3. Pull on the tted Tubing to ensure it is secure. Tube should not come free from the Fitting. Water test the connection
assembly prior to leaving the site to ensure there are no leaks.
4. Prior to disconnecting the Tube from the Fitting, ensure that the Water Line is depressurised. Push Collet Square
towards the Push-In Fitting Body and hold. While holding the Collet in, pull on the PE Tubing to remove from the Push-
In Fitting.
Note: This product should be installed, by suitably qualied persons, in a t for purpose application, to suitable materials,
using suitable xings and comply with any relevant codes. It should be inspected periodically for signs of wear and tear that
may affect performance or safety.
Dimensions are subject to manufacturer’s tolerance of +/-10mm. Rough-in should be completed with each xture.
Important: Installation Instructions are subject to change without notice. Please visit our websites for latest revision.