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operation
Tower Startup
Microorganisms including Legionella bacteria can exist in premise
Warning
plumbing including cooling towers. The development of an effective
water management plan (WMP) and implementation of maintenance
procedures are essential to prevent the presence, dissemination and
amplification of Legionella bacteria and other waterborne contami-
nants throughout premise plumbing. Before operating the cooling
tower, the water management plan and maintenance procedures
must be in place and regularly practiced.
WATER SYSTEM–Consult a knowledgeable water treatment professional to
clean and treat your new cooling tower prior to startup. Cooling towers must
be cleaned and disinfected regularly in accordance with local public health
services and recommendations. Do NOT attempt any service unless the fan
motor is locked out.
Remove any dirt and trash which has accumulated in the cold water basin.
Remove any sediment from the cold water collection basin, sump, and screens.
Use a water hose to flush cold water collection basins.
Fill the cold water collection basin and circulating water system until the op-
erating water level is reached.
OPERATE WATER SYSTEM–Prime and start the circulating water pumps.
Increase the flow of circulating water gradually to design water flow rate to
avoid water hammer which could damage the distribution piping system.
Increase the flow of circulating water gradually to match design water flow
rate. Circulate water over the cooling tower continuously for several days
before starting the mechanical equipment and placing the cooling tower into
continuous operation.
When starting in freezing weather, follow procedures outlined in
Note
Freezing Weather Operation.
INSPECTION–It is imperative that all operating assemblies be inspected
before they are placed in operation. The following is a list of components to
be checked before starting the tower:
1–Check tightness of bolts in fan hood joints.
2–Check bolted joints in the fan and gear motor drive assemblies.
➠
3—Check the piping connection hardware
3
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