SECTION 4 – MAINTENANCE AND TROUBLESHOOTING

4-1. Routine Maintenance

Y Disconnect power before maintaining.

3 Months

Replace unreadable labels.

Repair or replace cracked weld cable.

Clean and tighten weld terminals.

6 Months

Blow out or vacuum inside. During heavy service, clean monthly.

OR

Remove drive roll and apply light coat of oil or grease to drive motor shaft.

4-2. Circuit Breakers

2

1

Y Turn Off unit.

1 Circuit Breaker CB1

CB1 protects main circuit board PC1 if drive motor shorts or fails. If CB1 opens, wire feeding stops. Check for gun liner blockage or kinks, and check for jammed wire, or binding drive rolls.

2 Circuit Breaker CB2

CB2 protects the trigger circuit from overload. If CB2 opens, weld output stops. Check gun switch, and trigger leads.

Correct problem. Press button to reset circuit breaker. Close door.

Ref. ST-802 285

OM-192 440 Page 18

Page 22
Image 22
Hobart Welding Products 2250 specifications Maintenance and Troubleshooting, Routine Maintenance, Circuit Breakers, Months