Operator`s manual

To calibrate the Inclinometer Dial, first lower the ladder onto its bed. Loosen the set screw on the Dial
drum (see Figure 4-8, number 2) and rotate until a 0 reading is seen in the Dial Window on the Control
Console. Tighten the set screw. Check that the control cable is tight. If it requires tightening, loosen the
clamp screws holding the end of the cable to Ladder Section 1 and, with pliers, pull the cable tight.
Ensure the dial setting remains at 0 degrees. Tighten the clamping screws.
To calibrate the Extension Dial, first fully retract the ladder. Loosen the set screw holding the Extension
Control Cable in the end of the Extension Indicator Assembly Screw (see Figure 8-9, number 3). Move
the Control Cable until the Dial reads 35 degrees and tighten the set screw. If more adjustment is
required, loosen the set screw on the Extension Dial drum (See Figure 4-8, Number 8) and rotate the dial
until 35 degrees is indicated. Tighten the set screw.
8.11 CALIBRATING THE OVERLOAD SWITCH
Pull up the green Throttle Control Button. Pull up on the Ladder Elevation Auxiliary Control Lefver (see Figure 8-2,
number 6). When the Ladder Elevating Cylinders are fully extended, the hydraulic pressure will continue to
increase as indicated by the Hydraulic Pressure Gauge on the Ladder Control Console. When hydraulic pressure
reaches 1050 psi the Automatic Stop Light on the Ladder Control Console should light. If the light comes on when
hydraulic pressure is less than 1050 psi or greater than 1050 psi, the limit switch in the bourdon tube, which is in
the Ladder Control Console requires adjustment. If the light comes on when hydraulic pressure is less than 1050
psi, turn the spring tensioner adjusting screw counterclockwise to increase the pressure at which the light will
come on. If the light comes on when hydraulic pressure is greater than 1050 psi, turn the spring tensioner
adjusting screw clockwise to decrease the pressure at which the light will come on.
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