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Chapter 11 - Maintenance
d. When the platform lowers and stops at the ground and the klaxton stops, this suggests that the calibration
has been successfully completed.
With charge:
1. Load the platform: Place the counterweight (1.1 times the rated load) in the centre of the platform.
2. Turn the ignition switch to Platform mode; (note that the platform is at the very beginning)
3. Move the LIFT button as described below to activate the no-load automatic weighing procedure:
"DOWN" "DOWN" "DOWN" "DOWN" "DOWN" (5x) "UP", "DOWN" "DOWN" "DOWN" "DOWN" "DOWN" (5x) "UP",
"DOWN" "DOWN" "DOWN" "DOWN" "DOWN" (5x)
Pay attention:
a. Each operation of the button takes 0.15s - 2.5s;
b. The calibration is terminated when the control limit is reached. In this case, the calibration performed again
from the beginning.
c. After the klaxton sounds 5 times, this indicates that the calibration procedure has gone correctly.
d. When the platform lowers and stops at the ground and the klaxton stops, this suggests that the calibration
has been successfully completed.
2) Frequent testing of the platform overload mechanism is essential for safe operation of the machine.
The continuous incorrect operation of the platform can lead to a reaction failure on overload information of the
system. The stability of the machine is affected and the machine can even tilt.
3) The platform overload system is used to prevent the operation of the machine in case of of overload.
This system consists of two electrical elements, an overload pressure switch and an angle sensor.
4) The pressure sensor is adjustable, it determines the cylinder pressure and provides feedback on the platform
overload - system. When the pressure is extremely high, the pressure switch sends the signal through the
ECU and all machine functions are stopped until the excessive load is removed from the platform.
5) The angle sensor in scissor arm 1 is used to measure the angle of inclination of the scissors and the further
determination of the platform height.
•
Engage the ignition switch on the ground control. Raise the platform to a height of about 3.2 m above the ground.
• Lift the safety support, move it to the centre of the scissors housing and turn it up until it's vertical.
• Lower the platform height until the safety support is completely against the shaft housing.
Warning: risk of crushing
Place your hand on the correct position of the safety support when lowering the platform.
• Open the limit switch base valve on the chassis.
• Remove the limit switch valve.
• Mark and remove two lines from the upper limit switch.
• Make a short connection between the two removed lines.
• Turn the key switch to the ground controls and pull the red emergency stop buttons on the ground and
platform operation controls.
• Raise the platform slightly and restore the safety support to the installation position.
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