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MIG COMPACT 220H/2R / 250H/2R / 290H/2R / 300H/4R / 350H/4R / 400H/4R
4 – INSTALATION / OPERATING
MIG machines must be installed in proper places free from dust, humidity and flammable products (see pag. 39 "SAFETY
PRESCRIPTIONS FOR ARC WELDING GENERATORS).
-Before connecting the primary cable to the mains supply, voltage must be checked (3x230 or 3x400 Volt). Normally, the
welding machine is settled to 3x400V. Under request it may be prepared to other voltages.
-The earth connection is strongly recommended to avoid health risks.
-When connecting the gas or water hoses it is recommendable to check eventual leaks.
-The torch, earth cable must be well tightened when connected to their plugs. Equal cares must be taken with the earth clamp
in order to maintain the good quality of the welding.
When positioning the wire coil on the coil holder (4-fig.1), it is necessary to verify the correct positioning of breaking hole (3-
fig.1) on the spindle (5-fig.1) of the holder (4-fig.1) in order to maintain the breakage system operationally.
- The wire feeder rolls (8-fig.2) and the tip of the torch (9) must correspond to the wire diameter.
The wire must be manually conducted a few centimeters through the rolls (8-fig.2) and the wire guide (7-fig.2). After this, close
the traction levers (6-fig.2) verifying that the correct positioning of the wire on the roll rend.
The roll pressure regulation must be completed when the motor is running (the wire must flow without sliding). This pressure
should be reduced to the minimum in order to prevent wire deformations by crushing.
5
7
8
2 rolls motor
- After this, the wire coil breakage system must be regulated, actuating on the respective screw (2-fig.1). The rotation
movement of the wire coil must stops at the same time as the motor.
- Switch on the machine and press the torch trigger (models 220/250/290) or the "wire inch" key button (models 300/350/400)
until the wire appears outside the torch tip (9-fig.3). If necessary, unscrew the tip torch and straight torch cable.
- Open gas bottle flowmeter and press the gas test key button. Gas must flow until complete elimination of the air of the torch.
After this, regulate the gas flow between 6 and 12 lts/min. During welding, revise gas flow.
- Machine is ready to weld. If necessary, before start the welding job, test welding parameters on a sample. Before welding,
analyze personal and environmental security conditions.
10
1
2
Fig.1
5
6
6
7
7
8
Fig.2
4 rolls motor
3
6
7
8
4
5
9
Fig.3
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