Finned Coil Heat Exchanger - Baltimore Aircoil Company TrilliumSeries TRF Operation & Maintenance Manual

Finned Coil Heat Exchanger

Finned coil heat exchangers have a maximum allowable working pressure (MAWP) of 200 psi (13.7 bar). Finned coil heat
exchanger types will vary depending on the model and design. Proper finned coil heat exchanger maintenance should be
followed regardless of coil type. The finned coil heat exchanger should be inspected quarterly; it is susceptible to corrosion and
entrapment of airborne particulates (coil fouling). The speed of coil fouling can be reduced, and the service lifetime of the coil
can be extended, if the adiabatic pre-cooler pads are always kept in place to act as air filter.
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To keep the coils in optimum condition, ensure that Self-Clean Cycles are enabled. Refer to section Maintenance
Menu on Page 61 for more details.
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To inspect the coil, the adiabatic pre-cooler pads must be removed, refer to section Adiabatic Pre-Cooler Pad
Removal on Page 24.
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Inspect the coil surface. Any corrosion, damage, or obstructions must be corrected.
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To manually clean the coils, use a standard garden hose. Never use a brush or pressure washer. First, rinse the
outside surface dust and dirt into the water collection gutters and the sump. Continue to rinse until the water easily
flows to the inside of the unit and into the sump. Do not use harsh chemicals or extreme water pressure.
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Additional cleaning steps that can be used to dislodge clogged coils include high pressure air, vacuum/Shop-Vac
a mild detergent such as Nu Calgon Cal-Green MX coil cleaner (use per manufacturer's instructions).
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The sump and water collection gutters should be cleaned immediately after cleaning the coil to avoid clogging the
pump and drain valves.
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Coated coils: Inspect coil coating. To touch up blemished areas, use a Red Epoxy Repair Kit.
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Re-install the adiabatic pre-cooler pads per section Adiabatic Pre-Cooler Pad Removal on Page 24.
TrilliumSeries™ Adiabatic Cooler - TRF Operation & Maintenance Manual – Component Information & Maintenance
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