Pinguely-Haulotte HA20PX, Repair Manual

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CORRECTIVE MAINTENANCE SHEET
CHANGING THE U1 ELECTRONIC MODULE
Sheet C058
Caution!
Computers are not
interchangeable, they have a
serial number corresponding
to a given machine. If this rule
is ignored, dangerous
malfunctions may occur.
2
1
1 - Preliminary operations
• Put the machine in the maintenance configuration (see corresponding
paragraph).
• Switch off electric power (see corresponding paragraph).
• Disconnect the « - » then « + » terminals of the starter battery to isolate
the electric circuit.
2 - Removing the U1 electronic module
• Open the turntable electric box.
• Remove the fixing flange (2) from the U1 electronic module.
• Remove the U1 electronic module.
3 - Installing the U1 electronic module
• Install a new U1 electronic module, previously programmed by the manu-
facturer.
• Install the fixing flange.
• Close the electric box.
• Reconnect the « + » then « - » terminals of the starter battery.
• Put the machine back into the operational configuration.
• Check that the U1 electronic module works perfectly using the check list
for the machine concerned.
4 - Testing the U1 electronic module
• Make all movements from the bottom control panel for two seconds.
• Make all movements from the top control panel for two seconds.
• Lift the jib (> 0°)
• Make a travel movement with the selector on high speed and check that
movement speed is actually micro-speed.
• Lower the jib.
• Lift the arm to 3 metres.
• Make a travel movement with the selector on high speed and check that
movement speed is actually micro-speed.
• Lower the arm.
• Lift the boom.
• Make a travel movement with the selector on high speed and check that
movement speed is actually micro-speed.
• Lower the boom.
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