Wood’s Powr-Grip MRTALPCH611LDC - Manual (Page 33)

Rev 8.0/6-13 31 MRTALPCH6-DC: #35054
Adjustment Procedure
WARNING: Lifting capacity decreases whenever vacuum switch is adjusted to
maintain lower vacuum level.
1) Locate the access hole in the enclosure that contains the
vacuum switch (see OPERATING FEATURES), and remove the
plug from the hole. Using a flat-blade screwdriver, turn the
adjustment screw on the vacuum switch about 1/6th turn at a
time.
To maintain a
lower vacuum level, turn the screw clockwise .
To maintain a higher vacuum level, turn the screw counter-
clockwise .
2) Recheck the vacuum switch setting following each 1/6th turn
of the adjustment screw. In order to test the adjustment
accurately, release the vacuum pads completely before
reapplying them to a test surface.
When a vacuum switch is adjusted correctly, the vacuum pump turns off only
after vacuum
increases to a level higher than the minimum lifting level; and the pump turns on again
before vacuum decreases to a level lower than the minimum lifting level.
VACUUM SWITCH
1) ADJUSTMENT SCREW