12
Fluid Cooler Start-Up
Among other sources, outbreaks of Legionnaires’ Disease have
reportedly been traced to cooling towers and fluid coolers. Main-
tenance and water treatment procedures that prevent amplification
and dissemination of Legionella and other airborne bacteria should
be formulated and implemented BEFORE systems are operated and
continued regularly thereafter to avoid the risk of sickness or death.
Water System:
1. New installations should be cleaned and treated with biocides by a water
treatment expert before startup.
2. Remove any and all accumulated debris from fluid cooler. Pay particular
attention to inside areas of collection water basin, distribution water basins,
louvers and drift eliminators. Make sure that cold water suction screens
are clear and properly installed.
3. Fill the water system to an approximate depth of 8" in the depressed area
of the collection water basin. This is the recommended operating water
level. Adjust the float valve so that it is 75% open at that level. Continue
filling the system until the water reaches a level approximately 3mm below
the lip of the overflow.
4. Start your pump(s) and check for proper rotation as indicated by the ar-
row on the pump cover, observe system operation. A certain amount of
“pump-down” of the basin water level will occur before water completes
the circuit and begins to fall from the fill in the upper module. The amount
of initial pump-down may be insufficient to cause the float valve to open.
However, you can check its operation by pressing down on the operating
lever to which the stem of the float valve is attached.
operation
Warning
