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OM-808 Page 21
5-2. Overload Protection
Ref. ST-124 643-A / Ref. ST-161 156-A
Fuse link F1, or fuse links F1 and F2
for dual models, protect the grid
from overload damage. If weld
output stops, check link(s) as
follows:
Turn Off welding power source and
disconnect input power.
1 Fuse Link (See Parts List For
Rating)
Check and replace fuse link(s), if
necessary.
Close rear access door.
Grid Rear Panel
Multi-Grid Rack
1
5-3. Troubleshooting
Trouble Remedy
No weld output. Check and replace open fuse link(s), if necessary (see Section 5-2).
Check electrical input and output connections (see Section 3-3).
Erratic or improper weld output. Select correct size weld cables according to Section 3-7.
Clean and tighten weld cable connections (see Section 3-3).
For dual models, be sure paralleling switch is in proper position (see Section 4-7).
If using remote control, be sure Fine Amperage control and 2-1/2 Ampere switch on grid are in the Off
position (see Section 4-5).