Greenheck Fan LFC manual Fan Maintenance, Two Weeks after Start-Up, Every Three 3 Months, Yearly

Fan Maintenance

Greenheck recommends these procedures to ensure 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.

Two Weeks after Start-Up

Belts - Belts tend to stretch after a period of
time. They should be
periodically checked
for wear and tightness.
Approximately 3/8 inch	Deflection = Belt Span	Belt Span
of deflection per ft.	64
of span between
sheaves is standard for
belt tightness. When
replacing belts, use the
same type as supplied	NOTE: For motors of 1 hp or less a
with the unit. Matched	smaller sliding base bracket
	is used to attach to blower.
belts should always be
used on units with multigroove pulleys.

Replacement of belts can be accomplished by loosening the motor to the point where the belts can be removed by hand. Do not force belts on or off as this may cause breakage of cords leading to premature belt failure. Belts should be adjusted as above.

Every Three (3) Months

Filters - The filter in the unit should be inspected at least every three (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.

Yearly

Bearings — Most bearings are permanently lubricated and require no further lubrication under normal use. Normal use being considered -20ºF to 120ºF and in a relatively clean environment. Some bearings are relubricatable and will need to be regreased depending on fan use. Check your bearings for grease fittings to find out what type of bearing you have. If your fan is not being operated under normal use, bearings should be checked monthly for lubrication.

Motors — Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited to the exterior surfaces only.

Removing dust and grease buildup 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 104ºF (40ºC), the grease should be replaced after 2000 hours of running time as a general rule.

Wheels — 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, bearing, drive, motor base and accessories for tightness.

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Model LFC Low-Profile Fan Coil 11