Supplementary Protectors; Troubleshooting - Unitor UWI 400 Owner's Manual

6-5. Supplementary Protectors

6-6. Troubleshooting

Trouble
No weld output; unit completely inop-
erative.
No weld output; meter display On.
Erratic or improper weld output.
No 110 volts AC output at Remote 14
receptacle.
No 24 volts AC output at Remote 14
receptacle.
1
Place line disconnect switch in On position (see Section 4-11).
Check and replace line fuse(s), if necessary, or reset circuit breaker (see Section 4-11).
Check for proper input power connections (see Section 4-11).
If using remote control, be sure Mode Selector switch is in a position that provides output control at
Remote 14 receptacle.
Check, repair, or replace remote control.
Unit overheated. Allow unit to cool with fan On (see Section 4-4).
Use proper size and type of weld cable (see Section 4-8).
Clean and tighten all weld connections.
Reset supplementary protector CB1 (see Section 6-5).
Reset supplementary protector CB2 (see Section 6-5).
1 Supplementary Protector CB1
2 Supplementary Protector CB2
CB1 protects 110 volt AC portion of
Remote 14 receptacle from over-
load.
CB2 protects 24 volt AC portion of
Remote
overload.
Press button to reset supplement-
ary protector.
2
Remedy
14 receptacle from
Ref. ST-801 245-A
OM-202 137 Page 29