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GCM02-MT-ING4 NEW.doc c/02 04/03/2003 ENG Page 13 of 57
1.9 SIMPLE MAINTENANCE WORK
USER SAFETY PROCEDURE
WARNING
It is strictly prohibited for anyone to touch powered parts.
1.9.1. ELECTRICAL MAINTENANCE
All jobs must be performed by skilled personnel.
The control unit is equipped externally with all the possible command, control and reset functions.
Proceed as follows to access the equipment within the control panel:
1. Set the programming switch on LOCKED mode.
2. Check if the unit has stopped completely.
3. Disconnect the mains line that powers the control panel and switch the main ON/OFF switch of the mains off.
4. Check if the mains has been effectively disconnected, which can be seen by the mains OK LED switched off and by the
display switched to the mains that must indicate zero.
5. Open the control panel and check for any anomalies in the:
• fuses;
• automatic switches;
• thermal relays.
Once maintenance has been completed repeat the procedure in reverse order to reset the unit.
Overload fault
This may cause the unit’s trip switch to open (lever in central “TRIPPED” position). This must be reset by
pushing the lever down to the OFF position and then returning it to the ON position. Where switches have been
installed inside the electrical board, follow the ELECTRICAL MAINTENANCE procedure before opening the
board.
1.9.2. MECHANICAL MAINTENANCE
If the generator should fail to start due to an anomaly in the fuel circuit and also in an emergency status, the following tips may prove
useful.
How to restore the fuel circuit:
1. Set the programming switch on Manual Start mode without starting the generator. In this way the 15/54? that powers the fuel
interception solenoid valve is activated.
2. Once you have filled up with fuel, operate the hand pump situated on the motor until the circuit is restored, which can be seen
by the pump becoming harder to move.
3. Start in manual mode (It is advisable to restrict the starting attempts to 10 seconds each with a pause of 15 seconds in-
between to allow the battery to recover efficiently). Once the unit has started and is running regularly reset the automatic
functions.
1.9.3. PERIODIC CHECKS
To keep the unit efficient some periodic checks must be made together with those scheduled by the manufacturer of the motor and by
the installation engineer:
1. check the electrolytic level of the battery every 15 days following installation and request the assistance of an engineer if an
excessive consumption is noticed. Following the initial period check every 30 - 60 days;
2. In generators complete with motor pre-heating system check if the motor is warm each time a check is made otherwise request
technical assistance. (WARNING: a cold motor at low temperatures could have difficulty in starting or outputting once started);
3. If the generator is rarely triggered due to the lack of mains power supply execute an automatic test for at least 2 minutes.
4. if new electrical machines are installed in the system powered by the generator, request technical assistance to check the suitability
of the CG/CG mains/generator switching to the new load.
SUMMARY:
On a periodic basis check the electrolytic level of the clear batteries. Touch the motor to feel if it is warm (if equipped with pre-
heating system) and execute an automatic test.
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