Comau C3G Plus, Operation And Maintenance Manual, Page: 243 / 266

REPLACEMENTS
Specific cautions:
·
Comply with the “GENERAL RULES FOR MAINTENANCE” given in this chapter.
·
Any maintenance and/or checking operation on the module must be carried out only after opening the control unit main switch. If
the RPT module is removed from the signal distribution, carefully follow the instructions given below:
-
open the main switch;
-
wear the antistatic bracelet;
-
remove the fastening screws from the upper part of the signal distribution;
-
remove the upper part of the signal distribution;
-
disconnect the backup battery;
-
remove the module fastening screws;
-
remove the RPT Annex from the RPT MAIN using the edge of the RPT Annex to rest the fingers, taking care not to dam-
age the components assembled on both faces;
-
rest the removed module on a clean non conductive surface;
-
remove the RPT MAIN with the same precautions as for the RPT Annex module.
·
When refitting it is important to reverse the sequence. The battery must be connected to the RPT module with the motor and ser-
vices cables connected and with the control unit main switch at ON. The protection fuses inside the module must be replaced only
by equivalent ones specified by COMAU; the use of other fuses may cause danger to the operators and control unit malfunctioning
for which COMAU undertakes no liability.
·
The replacement of protection fuses with others not foreseen by COMAU (refer to parts list) does not guarantee compliance of the
equipment with the standards stated.
·
Should it be necessary to replace the backup battery following a system alarm warning, it is possible to proceed with the main
switch ON to prevent losing the axes absolute position. This operation however, must be carried out after removing the lid and tak-
ing the utmost care not to invert the poles. The backup battery must be disconnected before machine shipment and re-connected
during machine set-up. Connection of the battery to the RPT module must be made with the motor and services cables connected
and the control unit main switch at ON. For these operations follow the instructions given on the label on the signal distribution.
Special tools: unnecessary
C3G
Plus
MAINTENANCE
08/0702 7-53
C3G-RPT
(WHEN
INSTALLED)