Baltimore Aircoil Company VFL 241-H, Operating And Maintenance Instructions Manual

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Fixation and wrapping of float ball
Operating height is the water level above sump bottom during operation.
Operating water level
1. Operating height
2. Overflow
3. Pan bottom
Operating heights for the evaporative cooling equipment are indicated in the tables below:
Model Operating height
(measured from pan bottom)
(mm)
VFL 140
To check the operating level, proceed as follows:
1. Shut off fan(s) but keep pump(s) running.
2. Remove circular access door next to make-up connection.
3. Measure height from sump bottom to water level and compare with face value from table.
4. Check valve for leakage and replace valve, if necessary.
5. Check that float arm can move freely and that float ball floats and closes valve.
6. Ensure that make-up water supply is adequate.
This procedure does not apply for
•
equipment equipped with electrical water level control
• remote sump applications
If a float operated water make-up is used, initial setting and regular adjustments are needed.
The float controlling the make-up valve is mounted on a threaded rod, held in place by wing nuts. (see figure below)
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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5 Maintenance Procedure
5 Maintenance Procedure