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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 6 for procedures.
Below Stow Switch: The Below Stow Switch
controls the height of the carriage/platform before it
moves inward 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 increase 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
unloading procedures. After the door is closed, down-
ward 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
floor 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. Remove bottom pan.
2. Pull the manual release cable and lock.
3. Remove adjustment bolt (tensioner) access cover.
4. Loosen inside jam nut. Secure tensioner and
tighten outside jam nut. Tighten to eliminate visible
chain sag but do not overtighten.
5. Lock jam nuts together making sure the tensioner
roller is horizontal. Release and push the manual cable
in fully. Ensure platform is locked by moving the plat-
form in and out until 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 in-
crease carriage height. Rotate the shaft counterclock-
wise to decrease carriage height. Reinstall mounting
screw in nearest retainer hole. Adjust left and right side
eccentric 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. There must be no weight on platform.
2. Press hand held pendant UP switch to raise platform
a minimum 3" above stow level.
3. Press and hold control board mounted 50# CAL but-
ton. While pressing the 50# CAL button, press and
hold the handheld pendant STOW switch (button).
The platform will lower to stow level (begin stow
function), and then start to raise. Release 50# CAL
button immediately when platform starts to raise
from stow level.
4. After calibration, the LCD screen should read “PF
OCCUPIED” whenever there is 50 pounds or more
present on the platform.
Ground Sense Calibration
1. Press hand-held pendant DOWN switch to lower
platform fully to ground level.
2. While continuing to press the pendant DOWN switch,
press and then release control board mounted
O_BAR button.
3. Release the pendant DOWN switch.
4. After calibration, the LCD screen should read “GND
LVL 1” (in diagnostic mode) whenever the platform is
at ground level.
Outer Barrier Occupied Calibration
1. Press hand-held pendant DOWN switch to lower
platform 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 mounted O_BAR
button. While holding O_BAR button, press hand-
held pendant UP switch to raise the outer barrier. Be
sure to release O_BAR button when outer barrier
reaches approximately 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.