POSITIVE PRESSURE VENTILATOR
5
716-EXP PPV User Guide
Revised 11-2015
6. Maintenance and Repair
Maintenance should only be performed by experienced and trained personnel.
Be sure the ventilator is disconnected from the power source before performing any maintenance or repair. The motor is of heavy
duty ball bearing construction. The unit is completely sealed and requires no lubrication for the life of the motor.
The ventilator blade should be specially checked for build-up of material or dirt which may cause an imbalance. Excessive
imbalance can lead to accelerated wear on motor bearings and vibration. Remove ventilator guards. Clean blade and inside housing
with mild detergent and water. Do not use abrasives, sharp instruments or caustic solvents that may scratch or damage the
aluminum alloy blade.
Intake and exhaust guards are not interchangeable. When replacing guards after cleaning, position them with the rings
to the outside with the row of spot welds holding the rings on the bottom.
7. Extension Cords
Do not use reeled or coiled cable. Reeled or coiled cable can produce a counter EMF (electromotive force). The counter EMF can
reduce the current carrying capability of an extension cord. This counter EMF will result in a voltage drop within the motor
instigating a thermal overload condition. Power supply must handle wattage requirements. When conditions require the use of
reeled cable, unreel all cable and place on the ground in very loose overlapping non-uniform coils.
Units*
Watts **
Minimum Wire Gauge
Maximum Cable Length
1
2000
14
150 ft
2
4000
12
250 ft
3
6000
10
350 ft
* Multiple units powered by one extension cord
** Minimum running wattage for multiple units. Startup amerage draw is much higher.
