HUAYUAN SLG-200HF, Manual Instruction, Page: 38 / 53

31
Maintenance
WARNING
ELECTRIC SHOCK DANGEROUS
Be carefully working around radiator.the largest capacitors on IGBT connections stores lots of power,even if cut off
power,capacitor connection terminal,IGBT,diode still exist dangerous voltage.Never use screw driver or other tools to
discharge capacitor,otherwise it will explode and equipment damaged. Wait 5mins at least after turn off power to release
IGBT or capacitor.
Huayuan have the professional repair workers with rich practice repair experience,please contact our after sale service
department or engineer department if need any support.Meanwhile,please refer to “SAFETY” and study the operational
precaution and warning before operation.
1. Operation process
1
、
Power on — Make sure all the follows items turn off before supply power.
Cooling flow meter sensor;
Output current off;
No arc transfer signal;
No default phase;
No radiator overheat protection signal;
No liquid overheat protection signal;
No plasma arc signal;
2
、
Blow —
24s Air or N
2
to torch,continues for 24s
Turn on cooling system power;
Check air pressure in required;
No current sensor signal;
3
、
Standby
Check air pressure in required;
Check Input voltage in normal status;
No current sensor signal;
4
、
Pre-set —
Open pre-set gas,continue for 1.2s
5
、
Guide arc — Make the stable current through electrode and nozzle
Output unload voltage
Produce High frequency
The checked current of sensors TA102 and TA202 equal to Guidance arc current;
6
、
Arc transfer — Current is detected on the workpiece wire;
7
、
Current up —
When current rise to setting point,gas switch to cutting
8
、
Stability cutting — cutting workpiece with normal parameter
Cooling liquid flow normal;
Air pressure normal;
input voltage normal;
No radiator temperature protection;
No liquid overheat protection;
9
、
Current down — After turn off arc signal.the wire current down to setting point,air pressure down;
10
、
Automatic off — automatic off after 10s.
2.Gas clean