4.6 Maintenance and Repairs
4.6.1 Only authorised personnel may perform operations relating to maintenance, troubleshooting and
repairs.
4.6.2 An appropriate notice must be posted on the control panel of the control unit while maintenance
and repairs are being carried out; this notice must not be removed until the operations have been
completed even if they are temporarily suspended.
4.6.3 Maintenance operations and the replacement of components or the control unit must be carried
out with the main circuit breaker padlocked in the open position.
4.6.4 Even when the main circuit breaker is open and the control unit is therefore not supplied, intercon
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nected voltages may come from peripheral units (e.g. input/output 24 Vdc or 110 Vac) or from ex
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ternal power supplies (e.g. internal lighting system 110 Vac or 220 Vac). The relevant external
sources should therefore be deactivated when work is to be carried out on the system.
4.6.5 The main circuit breaker must be padlocked in the open position before removing panels, protec
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tive screens, grilles, etc.
4.6.6 Faulty components must be replaced with others having the same code.
4.6.7 Checks for faults on the control unit must, whenever possible, be performed outside the protected area.
4.6.8 If the control unit needs to be powered in order to proceed with the troubleshooting, all the precautions
required by the safety standards regarding personnel working in the presence of dangerous voltages
must be taken.
4.6.9 All troubleshooting on the robot must be carried out with the power off (Drive off).
4.6.10 All deactivated safety devices (panels, protective screens, interlocks, etc.) must be restored upon
completion of maintenance and troubleshooting.
4.6.11 Upon completion of any maintenance, repairs and troubleshooting, the robot system and all its
safety devices must be checked for correct operation from outside the protected area.
4.6.12 Only the original disks, provided by COMAU S.p.A. with the robot, must be used to load software
(e.g. after replacing electronic cards). Always run a safety test cycle from outside the protected
area, once the software has been loaded. When loading the system software, follow the proce-
dure described in the Product User Manual to the letter.
C3G Plus SAFETY REGULATIONS
02/1299 1-7
SAFETY REGULATIONS
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