Repair and maintenance
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02.20
909.2079.9-03
Plastic core: (for aluminium, stainless steel or
CuSi wire)
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Remove the existing wire feed spiral or plastic core and in-
sert the new plastic core. (Refer to the operating manual
for the torch)
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Remove the guide tube 51 from the central connection.
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Shorten the protruding plastic core, so that it is tight up
against the wire feed roller, and slide the appropriately
shortened support tube 50 over the protruding plastic
core for stabilisation.
All:
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Tighten the torch and thread the wire electrode in.
The order numbers of the replacement parts
depend upon the type of torch used and the
diameter of the wire, and can be obtained from
the torch spare parts lists.
50
48
49
47 46
35
45
51
8
52
Fig. 17:
Wire feed
8
Central socket
35
Wire feed roller
45
Main plug (torch)
46
Retaining nipple (=clamp) of the plastic cores for 4.0
mm and 4.7 mm outside diameter
47
O-Ring
48
Union nut
49
Plastic core
50
Support tube for plastic cores with 4 mm OD. At 4.7
mm outside diameter the tube is not required.
51
Guide tube
52
Wire guide spiral
12
Repair and maintenance
Please heed the current safety and accident
prevention regulations during all mainte-
nance and repair work.
Coolants are harmful to health if swallowed!
If coolant is swallowed accidentally, imme-
diately rinse the mouth and drink plenty
of water. Call for immediate medical assis-
tance.
If it comes into contact with the eyes, rinse them under
running water with the eyelids open for 15 minutes. Seek
medical assistance.
If it comes into contact with the skin, wash with soap and
water and rinse thoroughly.
If someone has inhaled vapour/aerosol, take the person
concerned out into the fresh air. Call a doctor.
When working with coolants, wear protective gloves and
goggles/face protection.
Use only original Lorch spare parts for mainte-
nance and repair.
Take care, products from other manufacturers
may cause damage to the equipment.
Do not allow coolant to penetrate into the en-
vironment!
Dispose of the coolant in a way that is compat-
ible with the environment. Follow the regula-
tions applying in your country.
The machine requires a minimum of care and maintenance.
Only a few items need to be checked to ensure trouble-free
long-term operation.
12.1
Check regularly
Check the following points for damage before starting up
the welding machine.
–
Welding torch and connections
–
Inert gas and coolant connections
–
Keyboard membrane and control panel
Blow out the welding machine every two months.
Â
Switch the welding current source off.
Â
Disconnect the mains plug on the welding current source.
Â
Open both side parts.
Â
Blow out the wire feed case with dry, low pressure com-
pressed air. Avoid blowing directly on the electronic com-
ponents from a short distance, to prevent damage.
Â
Close both side parts.
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