Caution
Warning
Operation
4.With no heat load on the circulating water, icing cannot be controlled effectively by air control during freezing weather. Towers must not be operated with reduced water rate and/or no heat load during freezing weather. If the circulating water system cannot be shut down, water returning from the process should be made to bypass the tower. If a bypass is used, all water must be bypassed without modulation. If the water bypass is directly into the tower's cold water basin, its design must be approved by SPX Cooling engineers.
Intermittent Wintertime Operation:
If periods of shutdown (nights, weekends, etc.) occur during freezing weather, measures must be taken to prevent the water in the cold wa- ter
Unless some means of freeze prevention is incorporated into your system, the tower basin and exposed pipework should be drained at the beginning of each wintertime shutdown period.
If tower basin is drained, verify that all basin heaters have been shut off either by automatic cutoff or disconnect switch.
It is recommended that you discuss your freeze prevention options with your local Marley sales representative.
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