Section 5 − Maintenance And Troubleshooting; Routine Maintenance; Supplementary Protectors - MAC TOOLS MW 270 Plus Owner's Manual

SECTION 5 − MAINTENANCE AND TROUBLESHOOTING

5-1. Routine Maintenance

3 Months
Replace unreadable labels.
6 Months
Blow out or vacuum inside. During
heavy service, clean monthly.

5-2. Supplementary Protectors

2
1
OM-219 806 Page 24
Y Disconnect power before maintaining.
Clean and tighten weld terminals.
OR
Repair or replace
cracked weld cable.
Remove drive roll
and apply light coat
of oil or grease to
drive motor shaft.
Y Turn Off unit.
1
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
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
supplementary protector. Close door.
Supplementary Protector CB1
Supplementary Protector CB2
Ref. 802 285-D