SET-UP AND SAFE OPERATING PROCEDURES
8-25
89210000
SUMMARY
On either “CC”(constant current) or “CP”(constant potential) power sources the cardinal rule is:
Air carbon arc gouging performs best when the dc volt meter on the controller panel reads
between 40 and 44 volts and the dc ampere meter on the controller panel reads the correct
amperage for the electrode being used. Refer to table 4.
Set the dc volt and dc ampere meters as you adjust the power source and/or the “arc level dial”.
Always fine tune ampage and voltage reading by watching the meters on the controller.
PREMATURE SHUTDOWN
There are three major reasons why the N6000 System would automatically shutdown:
1. Contactor overheating.
2. Low arc voltage.
3. No current or Low current due to high voltage
CONTACTOR OVERHEATING SHUTDOWN
Inside the contactor are two heat sensors. These sensors monitor the operating temperatures
inside the contactor cabinet. A yellow warning light, located on the side of the cabinet, will
light if the temperature inside reaches 210°F. If the unit continues to overheat, the red light
by the yellow, will light and the system will SHUT DOWN. The system can only be restarted
when the internal temperatures drop to a safe level. When this happens both lights will go off
and then the unit will restart.
The cause of the overheating should be determined before restarting. Refer to Troubleshooting
Section.
LOW VOLTAGE SHUTDOWN
Should the DC voltage supplied to the N6000 System drop below 28 volts, the controller will
shutdown the system. This feature protects the system from serious damage. If this occurs
determine the cause of the voltage drop, take corrective action and restart the system.
NO CURRENT OR LOW CURRENT/HIGH VOLTAGE SHUTDOWN
At first the system responds to high voltage by feeding the electrode, as happens during normal
gouging. If the voltage continues to increase, at some point the ARC CURRENT will drop to
less than 200 amperes. When this occurs the NO-CURRENT DETECT circuit will shutdown the
system. Determine the cause of the voltage increase, fix the problem and then the system
can be restarted.
Operating the N6000 System
To Next Page
Loading...