Double E M70 - Electrical Troubleshooting

www.ee-co.com M70-100 Manual V2 Page 18 of 22
G.1 Electrical Troubleshoong
I. Motor does not work aer turning on the machine and pressing the START buon while
pulling the cung arm assembly down
Possible Causes:
1. Micro-switch placed inside the knife cover K2 is damaged.
How to Proceed:
Check if the micro-switch is jammed. If it is jammed remove the two screws and micro- switch cover
and adjust
its posion so it does not jam.
If this procedure does not yield sasfactory results, replace the micro - switch.
2. Current protecon breaker inside the electrical box has been acvated.
How to Proceed:
Press the black reset switch on the Q1 circuit breaker.
3. The S1 contactor is damaged.
How to Proceed:
Check with a multi-meter if the contacts operate properly. Check with a multi-meter if contactor coil
is
damaged..
5. EMERGENCY STOP switch, contact K1 - (red contact) - is damaged.
How to Proceed:
Check with a multi-meter if the contacts operate properly. If needed replace them.
6. Power Supply is damaged or there is short-circuit in the 24VDC circuit.
How to Proceed:
Check if there is 24VDC at power supply output and if the green diode is illuminated.
If the diode is not illuminated, check if 120 VAC is at the power supply input. If it is present, the
power supply is damaged.
If the green LED is blinking, the 24VDC circuit has an electrical short
present. Trace the short and repair