Hi Is there anyone that can help with wire feed. Runs on about 10cm after a weld. I've fitted a new solenoid but that didn't fix it and checked the trigger. No luck.
Check the tension on the spool brake. The spindle for the wire spool should have a compression spring on the mounting bolt, to stop the inertia of the spinning wire spool causing run-on. The pressure on that spring may be adjustable. It should be set so that at maximum speed with a full spool, the spool comes to a full stop.
However, 10cm of run-on is a lot. It could be a fault on the motor control PCB. The speed controller may be designed to short-circuit the motor when the trigger is released, bringing it to a full stop ( like when you release the switch on a cordless drill ).
What is the exact model of Draper MIG welder that you have? Does the machine have any automated functions, such as spot or stitch welding? If so, are those controls set to off?
When the wire run-on fault occurs, does the gas solenoid remain open and does the welding arc continue?
Quote : weld stops gas stops but wire runs on. A run-on of 10cm is a lot - about 4 inches of wire can't really be inertia, the wirefeed motor must be getting power from somewhere to make it continue running. Putting a meter, or even just a bulb across the motor will confirm that power is still being supplied even though the torch trigger has been released. For a bulb, the supply is likely to be 15v to 27v, so you probably need two 12v 5 Watt car tail-light bulbs in series.
I don't know anything specific about this Draper machine, but it is probably a re-badge of a more common generic box. We need to find out what sort of circuitry is on the PCB, and where the power for the motor is coming from. The low-end machines typically tap off from the main welding power, i.e. the DC coming from the main transformer secondary plus the large rectifier, whereas larger machines will have a separate 24v transformer which provides a dedicated stabilised DC supply for the motor and the control circuit.
Does the owner's manual include a circuit diagram? Some photos of the inside of the machine and of the PCB would help.