Baltimore Aircoil Company VFL 241-H, Инструкция по эксплуатации и техническому обслуживанию

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Water make-up valve assembly
1. Float ball
2. Float arm assembly
3. Float valve
CAUTION
Supply pressure for mechanical make-up valves should be between 1 and 3,5 bar.
To make the initial basin water level setting, fill the sump with water until 2 cm above operating level. Adjust the
wing nuts of the float ball so, that the make-up valve is completely closed.
Before starting the unit for the first time, fill the sump till 1 cm below overflow level (push float ball under).
Under normal load conditions this setting should produce the correct operating level. At low load conditions the
operating level will rise and needs to be adjusted.
The unit basin should be closely monitored and water level adjusted as necessary during the first 24 hours of
operation.
BLOW DOWN
In case of a continuous blow down with a metering valve in the bleed line, ensure that the valve is unobstructed
and that blow down water can drain freely. Measure the blow down flow rate by recording the time needed to fill a
given volume.
For automatic blow down using conductivity control, ensure that the conductivity probe is clean and that the blow
down solenoid valve is operational. Unless you have a specific adjustment procedure, your water treatment
company should check and adjust set points.
SUMP HEATER PACKAGE
Sump heaters must only operate in the winter to prevent the sump water from freezing, when the water pump(s)
and the fan(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.
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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