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• Maintain the make-up water supply pressure between 20 and 75 psig for proper
operation. BAC recommends a surge protector (provided by others) for pressures over
60 psig.
• The basin water level will be factory-set. However, if additional adjustments are
required, set the basin water level by adjusting the float ball so that the valve is
completely closed at the operating level shown in
Table 2
on
page 22
.
• Closely monitor the water level in the spray water basin and adjust the level if
necessary during the first 24 hours of operation.
• Operating at the recommended water level will ensure that the unit basin contains
sufficient water volume to prevent air entrainment in the circulating pump during
system start-up and provides sufficient excess basin capacity to accept the total
system pull-down volume upon shutdown.
Spray Pump
Quarterly, ensure that spray pump remains clean and free of dirt or debris buildup on the
inlet strainer.
Figure 20.
Spray Pump
Basin Heaters (Optional)
Annually, ensure that basin heater(s) remain clean, and remove debris buildup around the
heater elements (see
Figure 10
on
page 14
).
Drain Valve
Check the nameplate for pressure, voltage, frequency, and service. Motorized valves should
be inspected at start-up and shutdown. However, the interval between cleanings will vary
depending on water quality and service conditions. If the voltage is correct, then sluggish
valve operation, excessive noise or leakage will indicate that cleaning is required. The valve
is normally open, but faulty valve operation may cause it to fail either open or closed. See
Figure 21
for the location of the valve.
Figure 21.
Drain Valve
DANGER:
Rotating equipment
will cause severe personal injury
or death to persons who come in
contact. Do not perform any service,
maintenance, or inspection on or
near the fans, motors, or inside
the unit without first ensuring
that the fans and pump motors
are disconnected, locked out, and
tagged out.
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