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5 Maintenance Procedure
5 Maintenance Procedure
W W W . B A L T I M O R E A I R C O I L . E U
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MAINTENANCE PROCEDURE
Checks and adjustments
COLD WATER BASIN AND BASIN STRAINERS
The cold water basin should be inspected regularly. Any debris which may have accumulated in the basin or on the
strainers should be removed.
Quarterly, or more often if necessary, the entire cold water basin should be drained, cleaned and flushed with fresh
water to remove the silt and sediment which normally collects in the basin during operation.
When flushing the basin, the strainers should be left in place to prevent the sediment from re-entering the unit
system. After the basin has been flushed, the strainers should be removed, cleaned, and replaced before refilling
the basin with fresh water.
CAUTION
Do not use acid to clean the strainers.
OPERATING LEVEL
The electric water level control package maintains a constant water level in the cold water sump independent of
cooling load changes and water supply pressure variations. Ensure every six months that all components (valve,
float switches) are operational and clean.
CAUTION
Supply pressure for mechanical make-up valves should be between 1 and 10 bar.
Operating height is the water level above sump bottom during operation.
SUMP HEATER PACKAGE
Sump heaters must only operate in the winter to prevent the water in the wet sump from freezing, when the
circulating water pump(s) are shut off.
Under no circumstances should sump heaters operate at other times as they could potentially heat the water to
temperature levels, which are favourable to bacteriological growth. Ensure every six months the heater thermostat
is properly set and clean. Also ensure that control and safety devices, such as low level cut out switches, are
operational, clean and properly incorporated into the control circuit.
HFL
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