9
CALIBRATION OF THE MINIHELIC
Zeroing hex screw
Step 1
Remove the plastic cover by turning it counter-
clockwise. One may have to press on the cover
as one is turning it.
Step 2
With the supplied hex wrench, one can adjust the
needle by turning the hex screw at the bottom of
the gauge.
ADJUSTMENTS
AIRFLOW VOLUME (CFM)
The airflow for the M66O is factory-set at the
maximum volume of air. If reduced airflow is
desired, it can be accomplished by adjusting the
variable motor sheave.
TO ADJUST THE BLOWER CAPACITY:
1. Turn the air cleaner off and open the access
door to the blower and motor section of the air
cleaner.
2. Loosen the two bolts locking the end of the
motor rail in position. Remove the belt.
3. Loosen the Allen setscrew on the face of the
motor sheave.
4. Rotate the sheave into a position that gives
the desired blower capacity.
5. Measure the amperage after the sheave
adjustment to insure that you do not exceed
the rated amperage
NOTE: When the sheave is rotated all the way
into the shaft, the blower capacity is at its
maximum. When the sheave is rotated five
turns out on the shaft, the blower capacity is at
its minimum. DO NOT ROTATE THE
ADJUSTABLE SHEAVE MORE THAN FIVE
TURNS OUT ON THE SHAFT. The sheave may
already be adjusted one or more turns out on
the shaft.
- CAUTION -
Adjusting the variable sheave changes the load on
the motor. Do not exceed the rated amperage for
the motor.
Summary of Contents for M660
Page 12: ...12 PARTS IMAGES ...
