PRE-STARTING CHECKS
Check all fasteners and set-screws for tightness, this is especially important for bearing set-screws.
The propeller should rotate freely and not rub on the fan panel venturi. Rotation should be in the same direction as the decal affixed to the unit. For 3-
phase installations, fan rotation can be reversed by simply interchanging any two of the three electrical supply leads. For single phase installations follow
the wiring diagram located on the motor
.
See page 4 for special wiring instructions for models FADE.
BELT-DRIVE FANS
The adjustable motor pulley is preset at the factory for the specified fan RPM. Fan speed can be increased by closing or decreased by opening the
adjustable pulley. Two-groove or three-groove variable pitch pulleys must be adjusted an equal number of turns open or closed. Any increase in the fan
speed represents a substantial increase in the horsepower required from the motor. Always check the motor load amperage and compare it to the name
plate rating when changing fan speed.
BELTS
Proper tensioning and alignment of belts will give years of trouble free service. The proper tension for operating a V-belt is the lowest tension at which
the belts will not slip at peak loading conditions. For initial tensioning, the proper belt deflection half way between pulley centers is 1/64” for each inch of
belt span. Check belt tension two times during the first 24 hours of operation and periodically thereafter. To adjust belt tension, loosen the four fasten-
ers (two each side of the motor plate) and slide the motor away from the fan shaft until proper belt tension is achieved.
It is very important that the drive pulleys remain in proper alignment after adjustments are made. Misalignment of pulleys will result in premature belt
wear, noise, vibration and power loss.
BEARINGS (BELT-DRIVE FANS ONLY)
All Fantech belt-drive fans have self-aligning cast iron pillow block type bearings with re-lube fittings of the air handler type, L50 200,000 hour average
life. Bearings should be inspected at periodic intervals. Locking collars and set-screws in addition to fasteners attaching the bearings to the bearing plate
or mounting frame, must be checked for tightness. Selection of the correct bearing grease and lubrication intervals depends on several things. Extreme
high or low temperatures, dirty or damp conditions and vibration exceeding 1 or 2 mils are all things that will require more frequent lubrication or spe-
cial greases. For standard servicing, use good quality lithium based grease that conforms to NLIG grade 2 consistency.
With the unit running, add grease very slowly with a manual grease gun until a slight bead of grease forms at the seal. Be careful not to unseat the seal
by over lubricating or using excessive pressure.
MOTORS
The motor bearings should be lubricated at the intervals recommended by the motor manufacturer in accordance with the instructions printed on the
motor plate. DO NOT OVER LUBRICATE. Many fractional horsepower motors have sealed for life bearings and do not require lubrication. Motors on the
FADE series are sealed for life and require no maintenance.
REMOVAL OF DIRT AND DUST
Dirt clogs cooling openings on the motor housing, contaminates bearing lubricant and collects on propeller blades causing severe imbalance if left
unchecked. The exterior surfaces of the motor, fan panel and propeller should be thoroughly cleaned periodically. Use caution and do not allow water or
solvents to enter the motor or bearings. Under no circumstances should motors or bearings be sprayed with steam or water.
DON”T FORCE BELT
- Loosen the motor
so that the belt can be slipped on the
pulley easily. Forcing the belt will break
the cords & cause early belt failure.
MOUNT BELTS STRAIGHT
- Shafts must
be be parallel and pulleys in alignment
to prevent unnecessary belt wear
Summary of Contents for FADE Series
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