Marley Primus P11, Руководство пользователя

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18
Tower Start-Up
Among other sources, outbreaks of Legionnaires’ Disease have
reportedly been traced to cooling towers. Maintenance 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 start-up.
2. Remove any and all accumulated debris from tower. Pay particular
attention 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.
3. Fill the water system to an approximate depth of 6 ″ (152 mm) in the
depressed area of the cold water basin at the air inlet side of the tower.
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
″ (3 mm) below the lip of the
overflow. Normal water operating level is 5" for model P11, 6" for
models P12 and P13 and 7" for models P14 and P15.
If tower is equipped with a standard suction connection, vent
accumulated air from the top of the suction hood by removing the tap
screw provided at that location. Replace tap screw when venting is
complete.
4. Start pump(s) and observe system operation. Since the water system
external to the tower will have been filled only to the level achieved in
the cold water basin, 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. 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.
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Note
Operation
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Warning
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