Greenheck Fan HEAT RECOVERY UNIT WITH EVAPORATIVE COOLING HRE-20 - Manual (Page 39)

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CLEANING THE ENERGY RECOVERY WHEEL
If the wheel appears excessively dirty, it should be cleaned to ensure maximum operating efficiency . Only
excessive buildup of foreign material needs to be removed . DISCOLORATION AND STAINING OF ENERGY
RECOVERY WHEEL DOES NOT AFFECT ITS PERFORMANCE.
Thoroughly spray wheel matrix with household cleaner such as Fantastic® or equivalent . Gently rinse with
warm water and using a soft brush remove any heavier accumulation . A detergent/water solution can also be
used . Avoid aggressive organic solvents, such as acetone . The energy recovery wheel segments can be soaked
in the above solution overnight for stubborn dirt or accumulation .
After cleaning is complete, shake the excess water from the wheel or segments . Dry wheel or segments
before placing them back into the cassette . Place wheel or segments back into cassette by reversing removal
procedures .
** DO NOT CLEAN ENERGY RECOVERY WHEEL SEGMENTS WITH WATER IN EXCESS OF 140ºF
** DO NOT DRY ENERGY RECOVERY WHEEL SEGMENTS IN AIR IN EXCESS OF 140ºF.
** THE USE OF A PRESSURE WASHER TO CLEAN SEGMENTS IS NOT RECOMMENDED. DAMAGE COULD
RESULT.
Energy Recovery Wheel Belt
Energy Recovery Wheel Bearings
Inspect belts each time filters are replaced . Belts that
look chewed up or are leaving belt dust near the motor
pulley may indicate a problem with the wheel . Be sure to
inspect wheel for smooth and unrestricted rotation . If a
belt requires replacement, contact the local Greenheck
representative . Instructions for replacement will ship with
the new belt .
Wheel Belt & Pulley
In the unlikely event that a wheel bearing fails, access is
available through the outdoor air filter door and through
a removable plate in the divider in the unit (accessed
through the exhaust air filter door) . Contact the local
Greenheck representative for detailed instructions on how
to replace the bearing .
ROUTINE MAINTENANCE
Wheel Bearing