FloAire STAGED ELECTRIC HEAT MODULE - Manual (Page 21)

21
MAINTENANCE
To guarantee trouble free operation of this heater, the manufacturer suggests following these guidelines.
Most problems associated with fan failures are directly related to poor service and maintenance.
Please record any maintenance or service performed on this fan in the documentation section located at
the end of this manual.
WARNING: ELECTRIC HEATERS HAVE TWO POWER INPUTS. DO NOT ATTEMPT
MAINTENANCE ON THE HEATER UNTIL BOTH THE MOTOR AND COIL
ELECTRICAL SUPPLY HAVE BEEN COMPLETELY DISCONNECTED.
General Maintenance
1. Fan inlet and approaches to ventilator should be kept clean and free from any obstruction.
2. Motors are normally permanently lubricated. Check bearings periodically. If they have grease
fittings lubricate each season. Use caution when lubricating bearings, wipe the fittings clean, the
unit should be rotated by hand while lubricating. Caution: Use care when touching the exterior
of an operating motor. Motors normally run hot and may be hot enough to be painful or
cause injury.
3. All fasteners should be checked for tightness each time maintenance checks are preformed prior
to restarting unit.
4. Blowers require very little attention when moving clean air. Occasionally oil and dust may
accumulate causing imbalance. If the fan is installed in a corrosive or dirty atmosphere,
periodically inspect and clean the wheel, inlet and other moving parts to ensure smooth and safe
operation.
5. The electric coil should be kept free of dirt and foreign matter that may cause uneven air patterns.
Hot spots on the coil can shorten the life of the coil.
2 weeks after startup
1. Belt tension should be checked after the first 2 weeks of fan operation. Belts tend to stretch and
settle into pulleys after an initial start-up sequence. Do not tension belts by changing the
setting of the motor pulley, this will change the fan speed and may damage the motor. To re-
tension belts, turn the power to the fan motor OFF. Loosen the fasteners that hold the blower
scroll plate to the blower. Rotate the motor to the left or right to adjust the belt tension. Belt
tension should be adjusted to allow 1/64” of deflection per inch of belt span. Exercise extreme
care when adjusting V-belts as not to misalign pulleys. Any misalignment will cause a sharp
reduction in belt life and produce squeaky noises. Over-tightening will cause excessive belt and
bearing wear as well as noise. Too little tension will cause slippage at startup and uneven wear.
Whenever belts are removed or installed, never force belts over pulleys without loosening
motor first to relieve belt tension. When replacing belts, use the same type as supplied by the
manufacturer. On units shipped with double groove pulleys, matched belts should always be
used.
2. All fasteners should be checked for tightness each time maintenance checks are preformed prior
to restarting unit.
3. Inspect the electric coil. All elements should be in the proper location and clean. If an element is
missing or broken, replace coil immediately.