Troubleshooting The Rcl - Manitowoc Grove GMK6300L Operating Manual

Malfunctions during crane operation
14.4 Finding and eliminating malfunctions
14.4.14
G
G
General
malfunctions
Malfunction
RCL not working – dark
displays, no buzzer tone
14 - 26

Troubleshooting the RCL

This section contains general malfunctions which are not displayed on the
RCL control unit as well as malfunctions which prompt an error display on
the RCL control unit.
Risk of accidents!
Immediately stop operating the crane if an error message is displayed!
The RCL may be repaired only by qualified personnel.
Risk of accidents due to overridden or faulty RCL!
In the event of a faulty RCL, first try to correct the error with the information
in this section. Only override the RCL if it becomes absolutely necessary in
order to lower the load in the event of an emergency.
Do not carry out any movements which increase the load moment in the
event of a faulty or overridden RCL.
If the RCL is overridden, the crane operations are not monitored and no
shutdown procedures are initiated when leaving the working range.
RCL program version
Always note down the number of the program version after a malfunction
occurs and before notifying Manitowoc Crane Care.
•
If required, open the main menu
The display (1) shows the program version.
Power supply not switched on
Fuse F2/6 blown
Fuse RCL F6 faulty
ö
.
Cause
3 112 xxx en
Remedy
Switch on the ignition
Replace blown fuse;
à
p. 14 - 6.
Replace blown fuse;
à
p. 14 - 12.
Operating Manual GMK6300L