ESAB AristoFeed 4-30 or 4-48 Does Not Respond Troubleshooting instruction

Brand: ESAB

Model: AristoFeed 4-30 or 4-48 Does Not Respond

Type: Troubleshooting instruction

www.esabna.com

DATE: January 26, 2005 BULLETIN NO: M_05_002

TITLE/ PRODUCT NAME: AristoFeed 4-30 or 4-48 Does Not Respond

RATING:

_ DIRECTIVE _ _ ALERT

(Action is Required) (Potential Problem)

X_ INFORMATION _ _ PRODUCT IMPROVEMENT

(Action is Optional) (Enhanced Product)

X_ General Distribution _ _ Business Confidential

(Unrestricted) (Restricted Distribution)

PRODUCT SERIES/ MODEL:

AristoFeed 4-30

AristoFeed 4-48

SERIAL NO:

All Serial Numbers and Models

SUMMARY:

The 42 vac power needed by the AristoFeed wire feeder control board originates at the control

transformer in the AristoMig power source and is protected by an 8 amp fuse. There have

been several reported instances of “no wire feed” even though the MA-6 display and power

source indicate normal operation. If ESAT is connected to further troubleshoot the system, the

wire feeder cannot be seen on the Canbus; only the AristoMig power source and MA-6 are

recognized.

The AristoFeed control PCB has no external indicator light to show that 42 vac power is

actually present. The user usually assumes if the MA-6 display is “ON” and the power source

power lamp is “ON, the feeder MUST be powered too. This is a false assumption because the

MA-6 operates on 12 vdc and power source light uses a 24 vac source not the 42 vac needed

by the wire feeder PCB.

There is an 8 amp fuse located in the top of the power source which protects the 42 vac control

transformer and wire feeder control board from over current. This fuse can blow due to:

• Shorted wire harness.

• Solid state component failure.

• Drive motor stall due to mechanical failure or severe wire “birdsnest”.

OPERATIONAL IMPACT:

None

ACTION:

When there is no response of the Aristo wire feed motor answer the following questions:

1. When pressing the inching button on the U8 or MA-6 control, will the wire inch or the

feed rolls start to turn?

a. If Yes – then the fuse is OK.

b. If No – then continue.

2. Is there 42 volts across pins A & C of the cable connection (Burndy plug) going to the

rear of the wire feeder?

a. If Yes – then fuse is OK.

b. If No – then continue.

3. Are the 42 vac circuit fuses blown?

a. Remove the top of the power source (do not loosen the Allen screws holding

the FRONT HANDLE).

b. Locate the round (donut shaped) transformer in the top of the power source.

c. Find the fuse holder mounted on the top of the transformer and check the

fuses. See below.

i. If Yes – then replace.

ii. If No – then continue.

4. Check the output of the control transformer for 42 vac.

Top of AristoMig 500 Fuse Holder on Top of Transformer

CONTACT:

ESAB Welding & Cutting Products

Product & Service Information Group

843-664-4416 Phone

843-664-5539 FAX

ESAB AristoFeed 4-30 or 4-48 Does Not Respond Troubleshooting instruction

ESAB AristoFeed 4-30 or 4-48 Does Not Respond Troubleshooting instruction

ESAB AristoFeed 4-30 or 4-48 Does Not Respond Troubleshooting instruction

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