3-10
LX31/41 Electric Work Platform
M
AINTENANCE
Section
3.10
3.10 S
WITCH
A
DJUSTMENTS
Proportional Control Adjustment
Potentiometers are sealed to protect sensitive adjust-
ments from vibrations, or from tampering. Remove
sealant prior to adjustment, and replace after.
NOTE: Do not use silicone sealer; it will damage
pots.
Use a small screwdriver or special adjustment tool to
set adjustment pots. Pots can be easily damaged.
Pots have 15 turns of adjustment, more than one turn
will often be required to complete the adjustment. If
pots have been previously set, reset by turning no
more than 1 turn at a time. If they have not been pre-
viously set, preset to about mid range and start from
there.
Turn pot clockwise (CW) to increase settings.
Turn pot counterclockwise (CCW) to decrease set-
tings.
Adjust pots only in sequence as outlined in this pro-
cedure.
Proportional Drive Control
IMPORTANT: Back out ramp trimpot 10 turns
(counter clockwise) before making any
adjustments.
Adjusting one pot affects the setting of others. After
making all adjustments recheck each function to ver-
ify settings.
1. Adjust sensitivity threshold pot (located in upper
control box) to obtain an equal threshold between
forward and reverse directions (Figure 3-12).
2. Set Sevcon motor values. Drive adjustments are
made through the motor control calibrator.
Ramp
Low Range
High Range
Threshold
Figure 3-12: Rotary Control Adjustment, Upper
Control Box
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