Tweco A 2000 Ultra-Feed - Manual (Page 34)

ULTRAFEED A 2000
5-4 May 1, 2006
FAULT CAUSE REMEDY
1. Too much pressure
on feed rolls.
a. Decrease feed roll pressure.
2. Input and output wire
guides misaligned. a. Realign wire guides. Refer to
section 3.06.
3. Incorrect cable liner
or contact tip. a. Refer to table in welding
gun manual for correct size.
1. Faulty gun trigger
switch or connection.
a. Check gun switch recepticle connection.
b. Check continuity of gun trigger switch leads
with trigger depressed. Repair or replace
as needed.
2. Faulty feed drive
motor or connections.
a. Check feed drive motor connections.
Repair or replace as needed.
b. Check motor brushes for excessive wear.
Replace as needed.
E. Motor continues to
run after gun switch
has been released.
1. Electrical short with
gun leads.
a. Check for shorted welding gun trigger
leads. Repair or replace welding gun.
b. Check the gun switch recepticle on
the feeder for a shorted condition.
F. No arc voltage
(Volts) control. 1. WSP/Local switch in
wrong position.
a. Make sure the WSP/Local switch on the power
supply is in the "local" position. Refer to the
power supply owner's manual.
G. Wire does not
feed with INCH
button depressed.
1. Loose or faulty
connections.
a. Check the INCH/PURGE switch located
on the wire feeder for loose or faulty
connections. Repair or replace as needed.
H. Gas does not flow
with PURGE button
depressed.
1. Switch connection
a. Check the INCH/PURGE switch located
on the wire feeder for loose or faulty
connections. Repair or replace as needed.
I. Wire feeds but
no gas flows. 1. Gas cylinder flow
restricted or empty.
a. Check the gas cylinder for gas. Replace
as needed.
b. Check for possible restriction in the gas
line. Repair or replace as needed.
c. Check to see if welding gun nozzle is
plugged. Clean or replace as needed.
D. Check connections on the gas valve for
faulty or loose connections. Tighten or
replace as needed.
1. Loose or faulty
connections.
a. Check all connections from gas cylinder
to welding gun. Tighten or replace
as needed.
2. Regulator/Flow
Meter problem a. Check for foreign material in gas valve.
Clean or replace as needed.
K. Wire feeds but
electrode wire is not
hot - there is no arc.
1. Faulty power supply
control cable.
a. Check continuity of pins A and B of the
19 pin power supply control cable.
Replace cable as needed.
C. Wire wraps around
feed rolls.
D. Wire does not feed
with gun switch
depressed.
J. Gas flows all the
time or leaks.
Table 5-1b: Trouble Shooting Continued