Page 5
Adjustments and Calibration
Adjustment Procedures
Lift Out Switch:
The Lift Out Switch stops inward
travel of the carriage/platform during Stow function
(activated by the housing-mounted Lift Out Cam).
Move cam in to increase inward travel. Move cam out
to decrease inward travel.
Full Out Switch:
The Full Out Switch stops outward
travel of the carriage/platform during Deploy (Up/Down)
functions (activated by the housing-mounted Full Out
Cam). Move cam in to decrease outward travel. Move
cam out to increase outward travel. Carriage rollers
must be inside housing a minimum 1/2". The platform
will not raise or lower until this switch is activated.
Floor Level Switch:
See page 7 for procedures.
Inner Roll Stop Occupied Sensor:
See page 11 for
procedures.
Below Stow Switch:
The Below Stow Switch controls
the height of the carriage/platform before it moves in-
ward during the Stow function (activated by the torque
tube-mounted Below Stow Cam). Rotate the cam in
to decrease platform height. Rotate the cam out to in-
crease platform height. Adjust cam so lifting arms are
aligned. View the platform position in the housing.
Barrier Down Switch:
This platform-mounted switch
prohibits the platform from raising unless the outer
barrier is in the full up position. The Up function is
prohibited if the outer barrier detent pin is not fully
engaged also.
Switch 0:
The switch (activated by the torque tube-
mounted Switch 0 cam) interrupts downward travel of
the platform during the Down function. This allows the
vehicle door to be closed during the remaining unload-
ing procedures. After the door is closed, downward
travel can be restarted. Rotate the cam in to lower the
height of the stopping position. Rotate the cam out to
raise the height of the stopping position.
Switch 1:
This switch (activated by the torque tube-
mounted Switch 1 cam) interrupts upward travel of
the platform during the UP function. This allows the
vehicle door to remain closed until the lift approaches
fl
oor level. After the door is opened, upward travel can
be restarted. Rotate the cam in to lower the height of
the stopping position. Rotate the cam out to raise the
height of the stopping position.
Drive Chain Adjustment
In event the drive chain sags 1/2" or more, adjust ten-
sion as detailed. Tighten to eliminate visible sag but do
not overtighten.
1. Unlock and pull the manual release cable and lock
in the released position.
2. Manually extend platform carriage 2/3 full out.
3. Remove adjustment bolt (tensioner) access cover.
4. Use deep well socket (long key sleeve) to loosen
outside jam nut. Tighten inside jam nut to eliminate
visible chain sag but do not overtighten.
5. Lock jam nuts together. Unlock and push the manual
cable in fully. Lock release cable. Move the platform
in and out until platform chain release assembly
engages chain.
Carriage Ride Height Adjustment
The carriage horizontal arms move (roll) in and out of
the housing tracks on roller bearings. Following instal-
lation or extensive lift operation, clearance between
horizontal arms and tracks may diminish. The eccentric
shaft mounting plate allows height adjustment.
Remove eccentric plate mounting screw. Using screw-
driver or small rod, rotate the shaft clockwise to increase
carriage height. Rotate the shaft counterclockwise to
decrease carriage height. Reinstall mounting screw in
nearest retainer hole. Adjust left and right side eccen-
tric shafts (screw positions may vary from side to side).
Adjust height such that horizontal arms do not contact
top or bottom of tracks (align center).
Calibration Procedures
Platform Sense Calibration
1. Place 20 lbs. in the center of the platform.
2. Press UP button on the hand-held pendant to raise
the platform a minimum of 3" above stow level.
3. Press and hold 50# CAL button on control board.
While pressing the 50# CAL button, press and hold
the STOW button on the hand-held pendant. The
platform will lower to stow level, raise slightly, lower to
stow level, and begin inward travel. Release the 50#
CAL button when the platform begins moving inward.
The platform sensing is now calibrated.
4. After calibration, the LCD screen should read “PF
OCCUPIED” when 50 lbs., or more, are present on
the platform. If 50 lbs. does not activate the “platform
occupied” signal readout, recalibrate with less weight
to lower the “occupied” setting or more weight to
increase the “occupied” setting.
Ground Sense Calibration
1. Press hand-held pendant DOWN switch to lower plat-
form fully to ground level.
2. While continuing to press the pendant DOWN switch,
press and then release the control board O_BAR/
GROUND LVL button.
3. Release the pendant DOWN switch. Ground level
sensing is now calibrated.
4. After calibration, the outer barrier should not unfold
(down) until the platform is fully on the ground.
Outer Barrier Occupied Calibration
1. Press hand-held pendant DOWN switch to lower plat-
form fully to ground level.
2. Once outer barrier is fully unfolded (ramp position),
release the pendant DOWN switch.
3. Press and hold the control board O_BAR/GROUND
LVL button. While holding O_BAR/GROUND
LVL button, press hand-held pendant UP switch to
raise the outer barrier. Be sure to release O_BAR/
GROUND LVL button when outer barrier reaches ap-
proximately half full up (vertical) position.
4. After calibration, the LCD screen should read “OUT-
BAR OCCUPIED” whenever there is weight present
on the outer barrier.
