Greenheck Fan Low-Profile Fan Coil LFC - Manual (Page 11)

11 Model LFC Low-Profile Fan Coil
®
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.
Fan Maintenance
Belt Span
Deflection =
Belt Span
64
Clockwise
CORRECT WRONG WRONG WRONG
NOTE: For motors of 1 hp or less a
smaller sliding base bracket
is used to attach to blower.
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.
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
of deflection per ft.
of span between
sheaves is standard for
belt tightness. When
replacing belts, use the
same type as supplied
with the unit. Matched
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.
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.