FloAire FAV-M - Manual (Page 42)

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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.
WARNING!!
DO NOT ATTEMPT MAINTENANCE ON THE HEATER UNTIL THE ELECTRICAL SUPPLY HAS BEEN
COMPLETELY DISCONNECTED AND THE MAIN GAS SUPPLY VALVE HAS BEEN TURNED OFF.
General Maintenance
1. Fan inlet and approaches to ventilator should be kept clean and free of any obstructions.
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. Before starting a unit after maintenance checks, check all fasteners for tightness.
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.
Re-Setting Of The Unit
If the flame safety control is locked out (alarm
light on), reset the unit by:
1. Turn OFF power to the unit.
2. Turn power to the unit back ON.
Emergency shutdown of unit
To shut down the unit in the event of an
emergency do the following:
1. Turn unit’s power OFF from the unit from
main building disconnect.
2. Turn the external disconnect switch to the
OFF position.
3. Close the inlet gas valve located on the
heater.
Prolonged shutdown of the unit
For prolonged shutdown the following steps
should be done:
1. Turn the external disconnect switch to the
OFF position.
2. CLOSE the inlet gas valve located on the
heater.
To re-start the unit the following steps
should be done:
1. Turn the external disconnect switch to the
ON position.
2. OPEN the inlet gas valve located on the
heater.
Lubricating Blower Bearings
Blower bearings require little lubrication. A general rule is one half pump from a grease gun for ½” to 1
7/16” shaft diameters and one pump for 1 11/16” and large diameter shafts for every 1500 to 3000 hours
of operation. A lithium based grease should be used. Bearings should be rotated as they are lubricated
to evenly distribute the grease, either by hand or via extended grease lines. Do not attempt to grease
bearings from inside the enclosure while the motor is energized.