Miller Electric Digi-Meter RMS (AC-DC) - Manual (Page 11)

OM-867 Page 5
SECTION 5 – MAINTENANCE & TROUBLESHOOTING
WARNING
ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Turn Off welding power source, and disconnect
input power before inspecting, maintaining, or
servicing. Stop engine on welding generator.
HOT PARTS can cause severe burns.
•
Allow cooling period before maintaining or servicing.
Maintenance and troubleshooting to be performed only
by qualified persons.
swarn8.1* 10/91
5-1. Routine Maintenance
See
Section
7
Replace
Unreadable
Labels
Turn Off all power before maintaining.
ST-084 121-A
3 Months
OR
Blow Out
Or
Vacuum
Inside
6 Months
– –
Tape Or
Replace
Cracked
Weld
Cable – –
Clean
And
Tighten
Weld
Terminals 3-2
Figure 5-1. Maintenance Schedule
5-2. Troubleshooting
READ SAFETY BLOCKS at start of
Section 5 before proceeding.
WARNING
Table 5-1. Welding Trouble
Trouble Remedy Section
Unit completely inoperative; no meter
display. Be sure input power cord is plugged in and that receptacle is receiv-
ing input power. 3-2
Incorrect meter display. Check weld cable, input power, and voltage sensing connections. 3-2
Turn off high frequency, if applicable. 3-2
No display on one meter only; other me-
ter works. Check connections to meter module; tighten or clean if necessary. – –
Check and replace meter module if necessary. – –
Have Factory Authorized Service Station/Service Distributor check
digital meter board PC1. – –
Erratic meter display. Check connections to meter shunt; tighten or clean if necessary. – –
Meters do not hold display with Std./Hold
switch in Hold position. Place switch in Std. position when welding amperage is below re-
quired minimum. Figure 4-2
Have Factory Authorized Service Station/Service Distributor check
digital meter board PC1. – –