22
Vertical Band Saw
15.4 WELDER MECHANICAL PROBLEMS
Table 4
Trouble
Probable Cause
Remedy
Weld could not be made. Jaws do not
move.
Wire connection is poor; connecting
point of welding switch is bad.
Change switch, or grind the connect-
ing port with a fi le.
Transformer burned out.
Change transformer, or rewire it.
Blade has oil on it.
Wipe off any oil.
Blade ends have rust.
Grind off rust.
Weld area melts when weld switch is
pushed.
Welding switch is cutting off late.
Screw welding switch connecting nut
tighter.
Welding press too weak.
Rotate pressure selector knob accord-
ingly.
Jaw movement too slow.
Put some oil on rear side of welding
lever and the two jaws.
Blade cannot be tightly clamped with
the clamp jaws.
Clamp jaws are out of order, or de-
cayed.
Replace clamp jaws.
Lower jaw inserts are out of order.
Replace lower jaw inserts.
Annealing doesn’t occur when anneal-
ing button is pushed.
Annealing switch connection is poor.
Replace annealing switch.
Fuse blown.
Replace fuse.
Annealing button will not return to
correct position after release.
Annealing button has dust or debris
around it.
Remove annealing button housing and
clean out any dust or debris.
Grinder will not run when Grinder
switch is pushed.
Grinder motor is burnt out.
Change grinder motor or rewire it.
Grinder switch is bad.
Replace grinder switch.
Summary of Contents for 891100
Page 34: ...34 Vertical Band Saw 19 0 WIRING DIAGRAM ...
Page 35: ...35 EVBS 20 NOTES ...
Page 36: ...36 Vertical Band Saw NOTES ...
