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6. MAINTENANCE
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DANGER! Unplug the welder from the mains power supply before performing maintenance or service.
6.1.
WIRE FEED UNIT
6.1.1.
Check the wire feed unit at regular intervals. The feed roller wire guide plays an important part in obtaining consistent results. Poor wire
feed affects the weld. Clean the rollers weekly, especially the feed roller groove, removing all dust deposits.
6.2.
TORCH
6.2.1.
Protect the torch cable assembly from mechanical wear. Clean the liner from the machine forwards by using compressed air. If the liner is
blocked it must be replaced.
CONTACT TIP (to remove tip follow steps in section 4.5)
6.3.
6.3.1.
The contact tip is a consumable item and must be replaced when the bore becomes enlarged or oval. The contact tip MUST be kept free
from spatter to ensure an unimpeded flow of gas.
6.4.
GAS CUP (to remove cup follow steps in section 4.5)
6.4.1.
The gas cup must also be kept clean and free from spatter. Build-up of spatter inside the gas cup can cause a short circuit at the contact
tip which will result in either the fuse blowing on the printed circuit card, or expensive machine repairs. To keep the contact tip free from
spatter, we recommend the use of anti-spatter spray (MIG/722307) available from your Sealey stockist.
6.5. TURNING FEED ROLLER IMPORTANT: Turn the feed roller to suit the wire size.
6.5.1.
There are two grooves on the feed roller, 0.6mm and 0.8mm. Always have the groove that is being used on the outside of the roller
(nearest to you). To turn the feed roller first loosen the wire tension knob and move it into its down position (see fig.10-1) then
move the tensioning roller assembly to its up position (see fig.10-2). Take hold of the triangular knob on the roller retainer and rotate it
90°anticlockwise to release it as shown in fig.10.3. Now pull the roller retainer off the drive spindle to reveal the roller as shown in fig.11.
fig.12
6.5.2.
Pull the roller off the drive spindle, flip it over and put it back on the drive spindle. (See fig 12) The groove size
you require should now be visible on the face of the roller. Push the roller retainer back onto the drive spindle with the opening
facing left. Ensure that the flanges at the base of the retainer, seat fully into the circular recess in the main moulding and then rotate the
retainer through 90° to lock it in place.
6.6.
REPLACING WIRE LINER
6.6.1.
A worn or damaged wire liner will seriously affect the performance of the welder and should be immediately replaced. First wind the wire
back onto the spool and secure it. Remove the four screws securing the torch cable clamp to the wire feed unit (fig.13) and take off the
clamp. Undo the torch case (fig.14) and pull the wire liner from theinsulation block. Pull out the liner from the torch cable and insert the
new one. Reverse the process to re-assemble. Ensure the liner is fully inserted into the torch insulation block and reassemble the torch.
Trim the other end of the liner as close to the feed roller as possible. Replace the torch cable clamp.
6.7.
REPLACING GEARS
6.7.1.
An inexperienced welder can allow spatter to build up in the tip and shroud. In severe cases this can block the wire feed causing gear
damage in the wire drive. To check if the gears are worn depress the button on the torch with the set switched on. If the gears are worn,
a grating sound will be heard coming from the wire feed motor and you may also observe the feed roller vibrating instead of rotating
smoothly. In this is the case, return the welder to your local Sealey stockist for repair.
© Jack Sealey Limited
fig.10
fig.13
Original Language Version
fig.11
SUPERMIG150.V4
Issue:1
fig.14
08/07/22
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