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rba RBA2770 Series Installation, Operation And Maintenance Instructions page 4

Wall mounted 'compact' water coolers

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Noisy Operation
Restricted Or No Water Flow
Compressor Cycling on
Overload Protector
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 fins 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 finished 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
Cartridge Spare Parts
RBA Code No.
Description
RBA7000-065-001
Valve Cartridge Assembly
Note: This product should be installed, by suitably qualified persons, in a fit for purpose application, to suitable materials,
using suitable fixings 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 fixture.
Important: Installation Instructions are subject to change without notice. Please visit our websites for latest revision.
4 of 4
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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.
Ensure water supply service stop valve is fully open.
Verify minimum 200 kPa supply line flow 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 flux. 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 qualified technician
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 certified
refrigeration mechanic should be contacted in this situation.
Change the overload or relay if defective.
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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