Greenheck Fan 55 Energy Recovery Wheel Maintenance, routine maintenance, Wheel segment removed

routine maintenance

Energy Recovery Wheel Maintenance

Annual inspection of the energy recovery wheel is recommended.. Units ventilating smoking lounges and other non-clean air spaces should have energy recovery wheel inspections more often based upon need.. Inspections for smoke ventilation applications are recommended bimonthly to quarterly until a regular schedule can be established..

ACCESSING ENERGY RECOVERY WHEEL

The HRE units have one energy recovery wheel.. Open the outdoor air filter door to access the wheel.. For the HRE-20 and HRE-45 models, the wheel cassette slides out.. Due to the size and weight of the HRE-55 and HRE-90 wheels, they remain stationary and all maintenance is performed in place.. There is room inside the unit to perform energy recovery wheel servicing.. Filters must be removed to access stationary wheels..

**WARNING: Disconnect power to the unit before performing any type of service.

REMOVING THE ENERGY RECOVERY WHEEL SEGMENTS Models HRE-20, 45, 55, & 90

Access to wheel through

outdoor air filter door

Bracket Segment Retainer

Steel retainers are located on the inside of the wheel rim (see diagram at right).. Push the retainer toward center of wheel, then lift up and away to release segments (see below)..

Lift Away

From Segment

Catch-
Segment Retainer	Inside of Wheel Rim
	Spoke
	Push Toward Center

important! PLACE RETAINERS BACK IN THE ORIGINAL POSITION BEFORE ROTATING THE ENERGY RECOVERY WHEEL. OTHERWISE DAMAGE TO RETAINER WILL OCCUR.

Wheel segment removed

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