Question about Hobart Handler 140 Mig Welder

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When I plug in my Hobart 135 welder the relay operates and lets the gas escape before operating the trigger to start welding. What could the problem be?

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Make sure your welder is turned off before you plug it in, there may be residual gas in the line because you forgot to purge the gas line

Posted on Aug 08, 2012

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Does it just do it once for a short time each time the machine is plugged in? If so, don't worry about it.


Posted on Dec 24, 2010


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1 Answer

I have no gasflow it sounds as if the gas is leaking at the feed rolls

there is no seal at the feed rollers around the wire as it requires the correct gauge wire and feed hole to slow down the loss of gas at that point ( easier for the gas to escape up the wire housing and out the welding end )
the gas is allowed to flow when the welding trigger is operated as that opens a gas solenoid that allows gas to the welding wire tube to exit past the shroud around the welding point

read you user manual well to be acquainted with the machines operation, and if there is a persisting problem talk with your supplier and consider a warranty service check

Sep 15, 2016 | Lincoln Electric Weld Pak 140 HD Wire Feed...

1 Answer

Hobart beta 200 arks without pulling trigger have to pull trigger to feed wire

I was a service tech/manager for 10 years and had my repair business for another 8 years after I left the company I worked for. Can't really remember that exact machine's theory of operation, but check your weld output contactor. Sounds like it might possibly be stuck In the closed position.

Nov 03, 2014 | Hobart Welding Tools

1 Answer

I have a lincoln sp-135t mig welder. while i was welding it started to just blow gas and i could weld with out pulling the trigger. also when the welder is plugged in but turned off the unit is still...

Contacts of the main contact relay "CR-1" are likely fused together completing the circuit. Otherwise the trigger switch is fused closed.

The main contactor can sometimes be released, then dressing the contacts with a small point file (Small mill ******* about 1/4 inch wide and 1/16 inch thick.

Otherwise locating a contactor/relay of a suitable current rating with a control voltage/coil rating of 24 volts.

Jan 02, 2012 | Lincoln 210 BLUE Welding Tools

1 Answer

I have a hobart 135 handler that with machine plugged in and turned on the wire has constant juice and the gas cylonoid is flowing gas from the bottle without the trigger being pressed. my dealer said it...

Have you disconnect the gun's power plug? If the wire and gas stop flowing by doing this action, then your problem is the gun's trigger. If the machine continues to feed gas and wire with the gun disconnected then yes, it is the pc board.
Good luck.

Aug 25, 2011 | Hobart Welding Tools

1 Answer

I have a handler 135 but when i plug in there is a buzzing noise with the power off and if the bottle is open, it will pump the whole bottle dry. Is there a solenoid that i can change to correct this...

Sound like a solinoid jamed open, the buzzing is the solinoid plunger viberating, this is possibly due to for too much gas, turn the cylinder off. Close the regulater so the Needle/s are at 0, release the wire feed rollers, pull the trigger , set the flow meter to approximatly 12-15Ltr try welding again.

Jan 20, 2010 | Hobart Welding Tools

1 Answer

Welder running but wont feed wire etc

Try to short the trigger wire back closer to the unit or better still inside the panel somewhere. There is often a relay that is operated that allows gas to flow and power to the wire feed motor. Check where the trigger wire goes it may give you some idea. If you can identify the part you can source one and see if it worthwile repairing. Cheers

Nov 18, 2009 | Welding Tools

1 Answer

I have a hobart 135 welder that is not working right. The gas keeps running when your not welding. When you plug it in it sounds like something is running inside without it being turned on. Do you know...

This sounds like the gas solinoid, first, check the gas flow, this should be 12 - 15 ltr per min: if thegas flow is to high it will hold the solinoid vale open. you can reduce the gas flow to a minimum, then check to see if the solinoid closes and opens, if not the iether the voltage to the solinoid is too low or the solinoid plunger is damage, replase the solinoid. lets know .

Nov 17, 2009 | Hobart Handler 140 Mig Welder

4 Answers

I have a hobart handler 135

You do not indicate if the wire is already out of the nozzle. If not, commonly the wire can jab the side of the tube it runs through and cannot advance.

IF the wire is already threaded, then there MAY be a fuse to protect the motor.

The click MAY be the gas valve, or the relay driving the motor and/or the main transformer for welding current. The circuitry for these is relatively simple and a voltmeter is your friend to troubleshoot this.

Oct 26, 2009 | Hobart Handler 140 Mig Welder

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