Repair And Maintenance; Check Regularly; Torch Care; Technical Data - LORCH M-Pro Performance Manuel D'utilisation

17

Repair and maintenance

Please heed the current safety
and accident prevention regu-
lations during all maintenance
and repair work.

17.1 Check regularly

Check the following points for damage
before starting up the welding machine:
– Mains plug and cable
– Welding torch and connections
– Ground cable and connection
Blow out the welding machine every two
months.
 Switch the machine off
 Disconnect the mains plug
 Unscrew both side panels of the unit
 Blow out the welding machine with dry,
low pressure compressed air. Avoid blow-
ing directly on the electronic components
from a short distance, to prevent damage
18

Technical data

1
Technical data
Welding
Welding range (I ..I
2min 2max
Welding range (U ..U
2min
No-load voltage
Voltage setting
Slope characteristic
ED 100 %
ED 60 %
ED at max. current
Usable wires steel
Usable wires aluminium
- 62 -
A
)
) V
2max
V
steps
A
A
%
Ø mm
Ø mm
 Screw the two side panels onto the ma-
chine back again
Never make repairs or technical
changes yourself.
In this case the manufacturer's
warranty is no longer valid.
If you experience problems or
i
need repairs, contact a dealer au-
thorised by Lorch.

17.2 Torch care

 Remove the weld spatter from inside the
gas nozzle using suitable tongs.
 Spray the inside surface of the gas noz-
zle with a releasing agent, or use nozzle
protection paste.
9 This will prevent weld spatter from being
burnt on.
M 200 CuSi
15..200
14,8..24,0
14,4..32,5
21
constant voltage characteristic line
100
130
20
0,6..1,0
1,0..1,2
Technical data
M 250
30..250
15,5..26,5 15,5..29,0
16,3..35,1 16,3..40,2
21
115
140
20
0,6..1,0
1,0..1,2
M 300
30..300
21
135
175
20
0,6..1,2
1,0..1,2
10.13