Shortening The Wire Liner; Cleaning The Gun Neck - Kemppi A7 MIG Gun 500-g Operating Manual

12.3.2 Shortening the wire liner

This section describes how to shorten the wire liner.
Unused wire liners or PA liners have to be shortened to
the actual length of the hose assembly.
Mounting of plastic liners is similar to mounting of
wire liners. Refer to the operating instructions of the
manufacturer of the wire feeder.
Plastic liners are used for aluminum. Plastic liners and
fastening material are available on request.
Figure 8: Shortening the wire liner
2
3
1
4
6
5
1. Support sleeve
2. Central plug
3. Hose assembly
4. Retaining nut
5. Collet chuck
6. Liner
Proceed as follows:
1. Lay out the hose assembly (3) straight.
2. Disconnect the central plug (2) from the feed unit.
3. Remove the old liner (6), and replace it with a new
one. Then insert the non-insulated side into the
central plug (2) as far as it will go.
4. Place the support sleeve (1), turned 180°, on the
new spiral liner (6) (on the side without the liner).
5. Cut off the protruding wire liner (6). The liner must
be even with the support sleeve (1).
6. Screw the collet chuck (4) onto the spiral liner (6) as
far as it will go.
The position of the wire guide can be checked
through the sight hole of the collet chuck (5).
7. Slide the collet chuck (5) and the wire liner (6) into
the central plug (2) as far as they will go.
8. Slide the support sleeve (1), with the thread side
first, into the central plug (2), and tighten it.
9. Attach the hose assembly (3) to the central plug (2),
using the retaining nut (4).
15
© Kemppi Oy 2016

12.3.3 Cleaning the gun neck

This section describes how to clean the gun neck.
To increase the availability time of the welding robot,
Kemppi offers an option for automated gun cleaning.
Proceed as follows:
1. Remove the gas nozzle.
2. Remove welding spatter, and spray the gas nozzle
with a suitable anti-spatter agent.
3. Check the wear parts for visible damage, and
replace any damaged parts if doing so is required.
4. Replace the equipment kit if it is worn or dirty.
5. Clean the separating point and O-rings with a
silicone-free sealing grease.
6. Check the TCP after each use and after any
collisions. Use, for example, an alignment jig to do
this.
A7 MIG Gun 500-g 1616