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Water Level Control
There are two types of water level controls used on Vertex™ Evaporative Condensers:
•
Mechanical make-up valve assembly
•
Optional electric water level control package
Mechanical Make-up Valve Assembly
NOTE: If the unit has been ordered with the optional electric water level control package or is
intended for remote sump application, a mechanical water make-up valve will not be provided.
A float-operated mechanical water make-up assembly is furnished as standard equipment on the unit. The standard make-up
assembly consists of a corrosion resistant make-up valve connected to a float arm assembly actuated by a polystyrene-filled
plastic float. The float is mounted on an all-thread rod held in place by wing nuts. The basin operating water level can be
adjusted by repositioning the float and all-thread rod using the wing nuts provided.
•
Inspect the make-up valve assembly monthly and adjust if necessary.
•
Inspect the valve annually for leakage. Replace the valve seat if necessary.
•
Maintain the make-up water supply pressure between 15 psig and 50 psig for proper operation. BAC recommends a
pressure regulator valve (provided by others) for pressures over 50 psig.
•
Set the initial basin water level by adjusting the wing nuts so that the make-up valve is completely closed when the water
level in the basin is at the operating level as stated in Table 3.
•
With the design thermal load and the average water pressure (15 to 50 psig) at the valve, the above setting will produce
operating water levels as stated in Table 3.
•
If the thermal load is less than the design load at the time of unit start-up, the procedure may produce operating levels
greater than those shown in Table 3. If operating levels are higher than specified, readjust the float in order to attain the
recommended operating level.
•
Closely monitor the water level in the basin and adjust the level if necessary during the first 24 hours of operation.
Vertex™ Evaporative Condenser Operation & Maintenance Manual – Component Maintenance Procedures
Figure 10. Nozzle Spray Pattern
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