maxiMIG 250/300
Operating manual
Page 15
Contents
11.
Brief description ...................................................................................................................................... 15
12.
Technical data ......................................................................................................................................... 16
13.
Safety requirements ................................................................................................................................ 17
14.
Control elements ..................................................................................................................................... 20
15.
Wire feed unit ........................................................................................................................................... 22
16.
Operation / Welding ................................................................................................................................ 23
17.
Welding..................................................................................................................................................... 23
18.
Maintenance and safety check ............................................................................................................... 24
19.
Trouble-shooting ..................................................................................................................................... 25
20.
Ersatzteile / spare parts .......................................................................................................................... 27
21.
Schaltpläne / circuit diagrams ............................................................................................................... 32
11. Brief description
The
maxiMIG 250/300
welding units are suited for welding thin sheet (motorcar parts) as well as extremely thick
materials. Very good results are achieved also in welding stainless steel and aluminium.
Weld-grade adjustment
maxiMIG 250/300: 12-grade switch
Control functions:
maxiMIG 250:
wire feet rate and spot welding time adjustable
maxiMIG 300:
wire feet rate and spot welding time adjustable
selector switch for 2-cycle / 4-cycle operation / spot welding
Wire feed by four-roller drive
Current-source cooling by low-noise fan
The fan is switched on by thermostat control and runs only when the current source gets hot. During weld off
periods, the fan switches off as soon as the current source has cooled down again.
Thermic overload protection
In the event of extremely high load or ambiant temperature followed by an inadmissibly high opeating
temperature, a built-in thermoswitch cuts off the welding current.
Central connecting socket
The central connecting socket permits quick coupling/decoupling of the torch.
Sign S
designates that this unit is admitted for welding under increased electrical hazard in
accorddance with European Standard EN 60 974-1.
