9
USER MANUAL
JEFMIG185-A – JEFMIG210-A
185A MIG WELDER - 230V 50Hz
210A MIG WELDER - 230V 50Hz
www.jeffersontools.com
damage the internal spring. d) Unscrew copper contact tip
(right hand thread) to remove.
4.8.5 Check welder is switched off “0”, and that the earth clamp is away
from the torch tip. Connect the welder to the mains power supply
and set the voltage switch to one. 3.9.6 Set the wire speed knob
to position 5 or 6. Keep the torch cable as straight as possible and
press the torch switch. The wire will feed through the torch. 3.9.7
When the wire has fed through, switch welder off, unplug from
mains. a) Take torch in left hand, slide the contact tip over the wire
and screw back into place. b) Grasp gas cup in right hand, push
onto torch head and turn clockwise only. Do not turn gas cup anti-
clockwise, as this will damage the internal spring. c) Cut wire so
that it is just protruding from the cup.
4.9 SETTING WIRE TENSION. Adjust the wire tension by rotating
the wire tension knob. Turn clockwise to increase the tension and
anticlockwise to decrease the tension. See (1) in g11.
IMPORTANT: Too little or too much tension will cause
problematic wire feed and result in poor welding.
4.9.1 Tension between rollers is checked by slowing down the wire
between gloved ngers. If top feed roller skids the tension is
correct. Use as low a tension as possible, too high a tension will
disgure wire and result in a blown fuse.
4.10 CLUTCH ADJUSTMENT. Note: It is essential that the clutch is
adjusted correctly.
4.10.1 Once the wire is fed through the torch, switch on the machine and
set the wire speed to maximum.
4.10.2 D Depress torch switch and release quickly. If the spool overruns it
indicates that the clutch is too loose.
4.10.3 Tighten the clutch nut located in the centre of the wire spool
holder with a spanner (g.8-C) and test the machine as above until
the wire stops over running.
Note: DO NOT over tighten the clutch as this will cause wire
feed problems and strain the motor.
4.11 TURNING/CHANGING THE DRIVE ROLLER. (See g.12) Ensure
that the wire diameter used, is matched by the correct groove size
in the drive wheel and the correct tip size on the torch as well as
the correct torch liner. Failure to do this could cause the wire to
slip and/ or bind.
4.11.1 Referring to g.9, open the wire feed mechanism by pushing
the locking/wire tension knob (1) down to the right allowing the
pressure roller carrier (2) to spring up revealing the feed roller.
4.11.2 Referring to g.12, loosen and unscrew the black feed roller
retaining knob (C) and put to one side.
4.11.3 The roller carrier (A) is keyed to the main drive shaft and the drive
roller (B) is keyed to the carrier, see below. Place a nger onto the
end of the drive shaft to prevent the carrier moving and slide the
drive roller off the carrier with your other hand.
4.11.4 The size of each wire feed groove is printed on the edge of the roller on the same side as the groove.
4.11.5 Turn the roller over to use the other groove or use a roller with different sized grooves as required. The groove to be used
should be positioned furthest away from you to be in line with the drive path.
4.11.6 Check that the key in the carrier (A) is properly seated in its slot. Ensure that the slot on the inside face of the drive roller
(B) is aligned with the key and slide the roller back onto the carrier.
4.11.7 Screw the black roller retaining knob (C) back on to the end of the drive shaft and tighten.
4.12 CONVERTING TO GASLESS WELDING. When delivered, your welder is set up for gas welding with the torch cable
connected to the positive (+) terminal and the earthing cable connected to the negative (-) terminal.
4.12.1 To weld without gas (using ux cored wire) you must reverse the polarity and connect the torch cable to the negative (-)
terminal and the earthing cable to the positive (+) terminal as shown in g.13.
4.12.1 Ensure that the machine is switched off and unplugged from the mains supply before carring our this task.
4.12.2 Safely disconnect the gas.
4.12.3 Fit a 1.0mm tip to the torch.
4.12.4 Change the drive roller to one having a 1.0mm groove.
4.12.5 Mount the ux cored wire reel and feed it through to the torch.
FIG. 11
FIG. 12
FIG. 13
