Miller Electric pmn - Manual (Page 28)

OM-228 305 Page 24
6-6. Troubleshooting Torch
Torch travel speed too slow;
increase travel speed (see
Section 5-2). Clean or
replace torch consumables
as necessary (see Section
6-4). Be sure work clamp is
securely attached to
workpiece.
Yes
No
Does arc go
on and off
while cutting?
Does arc go out
while cutting?
No
Yes
Be sure work clamp is
securely attached to work-
piece. Make sure tip is on or
near, 1/16 in (1.6 mm) to 1/8
in (3.2 mm) workpiece (see
Section 5-4). Clean or
replace torch consumables
as necessary (see Section
6-4).
Do sparks come
out of top of cut;
or cut is not
clean?
No
Yes
Torch travel speed too fast;
reduce travel speed (see
Section 4-1). Clean or
replace torch consumables
as necessary (see Section
6-4). Be sure work clamp is
securely attached to
workpiece. Unit not capable
of cutting metals thicker
than rating (see Section
4-1).
Is Trouble light
On; unit has no
cutting output? Yes
Check torch shield cup (see
Section 6-2); reset unit
Power switch. *Check torch
and connections inside unit.
Go to Section 6-5.
Go to Section 6-5.
Go to Section 6-5.
No
Go to Section 6-5.
*Servicing procedure to be performed
only by authorized Service Station.