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FIGURE 9 - Airflow Adjustment
VIII. MAINTENANCE AND CLEANING
CAUTION: ELECTRIC SHOCK HAZARD Disconnect power
whenever servicing unit. More than one disconnect may
be required to de-energize unit.
Keep your air door operating at peak efficiency by cleaning
the blower wheels, motor(s) and intake grille. Buildup of dust
on the blower wheels can cause vibration, noise and excessive
wear on the motor bearings. The frequency of cleaning will
depend on the environment where the unit is operating.
Dirty, dusty or greasy environments could require a
cleaning schedule of once every two months. If the envi-
ronment is not that dirty, the unit(s) should be scheduled
for cleaning a minimum of once every (6) months.
To access the interior of the unit:
A. Disconnect the power to the unit; remove the intake grille by
removing the locking screws on each end of the unit. Lift the
intake grille up and then towards you. See Figure 10.
B. Remove the bottom access panel by removing the phillips
head screws on the bottom of the unit.
C. Vacuum and scrape (if necessary) to remove the buildup of
dirt and debris. The motor(s) are permanently lubricated and
require no additional lubrication. Reinstall the cover and intake
grille.
D. Switch the power on after cleaning, reinstalling the cover and
intake grille.
CAUTION: STAND CLEAR OF THE UNIT OR WEAR SAFETY
GOGGLES AS LOOSE DEBRIS MAY BE PRESENT AND MAY
EXIT THE NOZZLE.
FIGURE 10- Intake Grill Removal
IX. SERVICE
CAUTION: ELECTRIC SHOCK HAZARD Disconnect power
whenever servicing unit. More than one disconnect may
be required to de-energize unit.
Any service performed on the MaxAir/Zephyr air door MUST be
done by qualified personnel.
Berner air doors require very little servicing. All parts are eas-
ily accessible for periodic inspection and maintenance. Units
should be cleaned at least twice a year. Your particular appli-
cation (the amount of dirt and dust in the air) and location of
the unit(s) will determine how often your unit(s) will need to
be cleaned and serviced. All motors have permanently lubri-
cated, sealed, sleeve bearings and require no maintenance.
See Figure 11
FIGURE 11 - Unit Components
7
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