TrilliumSeries™ Adiabatic
Cooler - TRF Operation & Maintenance Manual
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Unit Operation & Storage
Page | 97
Extended Shutdown
Perform the following services whenever the unit is shutdown in excess of three days:
NOTICE:
Do not use steam, high-pressure water, or high-pressure air to clean any
component.
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Disconnect, lock-out, and tag-out the unit.
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Close the shut-off valve in the make-up water line (supplied by others) and drain the sump and all exposed water piping.
Heat trace all exposed make-up water lines if the water cannot be shut off and external piping cannot be drained.
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To minimize the risk of biological contamination during shutdown, it is recommended the entire system be drained.
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Coils must be empty and closed off. For extended shutdown periods coils should be charged with nitrogen at 15 psig in
the field and capped by adding a welded cap. Upon start-up, the coil connections will require cutting.
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Insert desiccant bags into the control panel to absorb moisture. Seal the control panel for storage
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Clean all debris, such as leaves and dirt, from the interior and exterior of the unit.
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Clean and flush the water distribution system and sump.
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Leave sump drain valve open so rain and melting snow will drain from the unit.
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Clean the sump strainer and re-install.
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Cover the fan discharge to keep out dirt and debris.
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Inspect the protective finish on the unit. Clean and refinish as required.
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Start-up and operate fan motors at full speed for at least three hours once a month to move the bearings and allow any
condensate that may have ingressed to evaporate
