BAC PCE Operating And Maintenance Instructions Manual page 19

Operating water level
1. Operating height
2. Overflow
Operating heights for evaporative cooling equipment are indicated in the table below:
Model Operating height (measured from pan bottom)
(mm)
PCE 216
Cold water basin operating heights
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)
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.
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.
19
5 Maintenance Procedures
5 Maintenance Procedures
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