Operating instructions

ManualsBrandsBOC ManualsWelding SystemMIG 250C

BOC Smootharc Advance II MIG 250C Operating manual

7.0 Installation

Installation for MIG/MAG process Installation for MMA process

WARNING

15A PLUG FITTED FOR DEMONSTRATION ONLY.

Max 200A @ 20% duty cycle for 15A plug.

For full output a 32A, 250V, 3-pin plug should be tted

by a certied electrician along with the additional input

cablesupplied.

7.1 Installation for MIG/MAG process

1 Connect the gas hose to the regulator and the rear of the machine.

Select correct shielding gas for the application.

2 Insert the earth return lead connection into the front panel.

3 Fit the wire spool to the machine. Select correct welding wire for

application.

4 Select the appropriate feed roller to suit the wire being used

- This machine comes complete with two types of wire feed rollers

- V groove for use with solid carbon manganese and stainless steels

- U groove for use with soft wires such as aluminium

5 Loosen the wire feed tension screws and insert the wire. Re t and

tension rollers ensuring the wire is gripped su󹟾ciently so as not

to slip but avoid over tightening as this can a󹟽ect feed quality and

cause wire feed components to wear rapidly.

6 Fit and tighten the torch on the output connection [A]. Ensure correct

torch liner and contact tip are selected.

7 Select the correct polarity for the type of wire used as indicated on

the consumable packaging. This is achieved by swapping the polarity

terminal wires. For most solid wires the terminal should be set as

torch positive.

8 For torch positive, plug the short mechanical connector (link plug) [B]

on the front panel into the positive (+) terminal and the work return

lead [C] into the negative (-) terminal.

9 For torch negative, couple the short mechanical connector [B] into

the terminal marked negative (-), and the work return lead [C] into

the positive (+) terminal.

7.2 Installation for MMA process

1 Connect the electrode holder [D] to the positive (+) of the machine

and fasten it clockwise tightly.

2 Connect the work return lead [C] into the negative (-) of the machine

and fasten it clockwise.

3 Please note that for manual metal arc (MMA) welding the electrode

holder can be switched to the negative pole of the welding machine

if so required by the specication of the electrode.

4 The short mechanical connector (link plug) [B] should remain

hangingfree.

Smootharc

AdvanceAdvance

250C

VOLTAGEINDUCTANCE

CRATER

ARC CURRENT

0 100 100 10

VA m/min