EVAPCO LS Series - Freeze Protection; Water Treatment Guidelines; Routine Maintenance

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LS Series Coolers and Condensers
Freeze Pr otecti on
The simplest and most effective way of keeping the recirculated water from freezing is to use a remote sump. With a remote sump,
when the recirculating water pump is shut off all recirculating water drains back to the sump.
If a remote sump is not being used, pan heaters are available. However, the basin heater will not prevent the external water lines,
pump or pump piping from freezing. For installations where water will be left in the basin during freezing conditions, the make-up water
supply, overflow and drain lines, as well as the pump and pump piping up to the overflow level must be heat traced and insulated to
protect them from damage. Any other connections or accessories at or below the water level must also be heat traced and insulated.
A condenser or cooler cannot be operated dry (fans on, pump off) unless the water is completely drained from the pan.
The pan heaters are sized to prevent pan water from freezing only when the fans are turned off.
Water T r eatment
Proper water treatment is an essential part of the maintenance required for evaporative cooling equipment. Galvanized equipment
should be passivated prior to equipment startup to avoid the formation of white rust. For more information on passivation and white
rust, please download a copy of EVAPCO’s Engineering Bulletin 36 at www.evapco.com.
The spray water and the fluid inside the
heat transfer coil should both be maintained with a water treatment program to ensure efficient system operation while maximizing
the equipmentʼ s service life. For more information on recommended water chemistry for EVAPCO equipment, see the Operation
and Maintenance Instructions for this equipment.
Mai ntenance
Once the installation is complete and the unit is turned on, it is important that it be properly maintained. Maintenance is not difficult
or time-consuming but must be done regularly to assure full performance of the unit. Refer to the operation and maintenance
instructions supplied with the unit for proper maintenance procedures.