10
Fan Maintenance
Greenheck recommends these procedures to insure trouble free operation of this unit. It is especially important
to maintain heater units for clean and efficient operation. Most unit failures can be attributed to poor setup or
poor maintenance.
A record of maintenance performed on this unit should be kept. This information will provide essential
information if problems are encountered. A section at the back of this manual is provided for recording the
unit's maintenance history.
CAUTION: When performing any maintenance on this unit be sure that the power is disconnected and
cannot be accidentally turned on. The control center disconnect can be locked in the off position.
Pre-Starting Checks
Check all fasteners for tightness. The wheel should rotatefreely and be aligned. Wheel position is preset at the
factory, however, movemenet may occure durig shipment and realignment may be necessary. Centering may be
accomplished by loosening hte set screw in the wheel and moving the wheel to desired position.
Every 3 Months
The filter in the unit should be inspected at least every 3 months. Depending on the environment filters could
require changing or cleaning more or less often. The filters can be slid out of either side of the unit.
If
washable filters
are installed, they can be washed in warm soapy water. An adhesive spray can be applied
to increase filter efficiency.
If
disposable filters
are installed, check by holding up to a light source. If light cannot pass through the filter, it
should be replaced. Replacement filters should be of the same manufacturer and size. When reinstalling filters,
be sure to install with the airflow in the correct direction indicated on the filter.
Motor
maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be
limited to the exterior surfaces only. Removing dust and grease build-up on motor housing assures proper
motor cooling. Greasing of motors is intended only when grease fittings are provided. Many fractional motors
are permanently lubricated and require no further lubrication. Motors supplied with grease fittings should be
greased in accordance with manufacturer's recommendations. When motor temperature does not exceed 104°F
(40°C), the grease should be replaced after 2000 hours of running time as a general rule.
Wheels
require very little attention when moving clean air. Occasionally oil and dust may accumulate on the
wheel causing imbalance. When this occurs the wheel and housing should be cleaned to assure smooth and
safe operation. Inspect fan impeller and housing for fatigue, corrosion or wear
Routinely check all
fasteners, set screws and locking collars on the fan, motor base and accessories
for
tightness.
