12
Aerial work platform
ZED 20.3 HV
COD. UM0284_GB | REV. 0.0 | ED: 09/17
GB
Chapter 8
MAINTENANCE
7
6
5
4
Fig.
8.4
DAnGEr
When levelling the work platform, it is prohibited to use telescopic swing.
8.7
Electrical system
8.7.1
Electrical circuit
The electrical circuit is made up of many components. Their working eficiency should be checked
according to the operations they perform. Check the working order of all operational controls before
each use by carrying out a complete work cycle for each control using the ground control panel. Also
check that the emergency stop buttons work properly.
CAUTiOn
There should be nobody on the work platform during the test.
Go onto the work platform and repeat the test using the controls on the platform. Check the condition
of the power cable of the ground control panel underneath the turret. If the cable is twisted, remove
the plug from the control panel and unravel it.
8.7.2
Stabiliser limit switches and interlock switches
Before each use, check that all the stabiliser/boom interlock limit switches are working properly. To
make sure that they are working correctly, stabilise the machine and check the operation of the boom.
Lower the boom, retract the stabilisers one at a time and check that it is not possible to operate the
boom.
