SPX Marley NCWD, Руководство пользователя

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12
Tower Startup
Microorganisms including Legionella bacteria can exist in premise
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:
1. 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 ASHRAE Standard 188 and
Guideline 12.
The water conditions during the initial tower operation are crucial in pre-
venting premature corrosion of galvanized steel (white rust). For at least
the first eight weeks of operation, pH should be controlled between 6.5
and 8.0 with hardness and alkalinity levels between 100 and 300 ppm
(expressed as CaCO
3
).
2. Do NOT attempt any service unless the fan motor is locked out.
3. Remove any and all accumulated debris from tower. Pay particular at-
tention to inside areas of cold water basin, hot water basins, louvers and
drift eliminators. Make sure that cold water suction screens are clear and
properly installed.
4. Fill the water system to an approximate depth of 8". 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
1/8" below the lip of the overflow.
5. Close the water valve leading to the plume abatement coil and open the
water valve leading to the hot water distribution basin.
If tower is equipped with a standard side-suction connection, vent
accumulated air from the top of the suction hood by removing one or
both tap screws provided at that location. Replace these tap screws
when venting is complete. (On certain models, the top of the suction
hood for 14" diameter side suctions is 1 1/4" above the top of the
overflow. In those situations, it is necessary to block the overflow
and continue filling the basin to the level where the aforementioned
tap screws are submerged before venting.)
Warning
Note
operation