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A-4
Work Cable Installation
Refer to Figure A.2.
1. Open the wire feed section door on the right side of
the SP 170-I.
2. Pass the end of the work cable that has the termi-
nal lug with the smaller hole through the Work
Cable Access Hole (1) in the case front.
3. Route the cable under the feedplate (6) and in front
of the Wire Feed Motor.
4. For Innershield Only: Refer to Figure A.2. As
delivered, the machine is connected for negative
electrode polarity. This is the appropriate configu-
ration for the Innershield process. To complete
installation, use the provided wing nut to connect
the work cable's terminal lug to the positive (+) out-
put terminal (4) located above the Wire Feed
Gearbox (5). Make sure that both wing nuts are
tight.
5. For GMAW Only: Refer to Figure A.4. To wire for
positive polarity (required for the GMAW process),
connect the short cable attached to the connector
block (1) to the positive (+) output terminal (4) and
the work cable (3) to the negative (-) terminal (2).
4
2
1
FIGURE A.4
GUN INSTALLATION
As shipped from the factory, the SP 170-I gun is ready
to feed .035 Innershield. If other wire is to be used,
change the contact tip to the appropriate size.
INSTALLATION
Connecting Gun Cable to the SP 170-I
As shipped the gun is fitted with a liner suitable for all
wire diameters from .025" - .035" (0.6mm - .9mm) and
has an .035" (0.9mm) contact tip installed.
1. Refer to Figures A.2 and A.4. Unplug the machine
or turn power switch to the OFF "O" position.
2. Pass the insulated terminals of the gun trigger con-
trol leads, one at a time, through the Gun Cable
and Control Lead Access Slot (A.2-2) in the case
front. The leads are to be routed up the inside of
the case front, behind the gas line.
3. Insert the connector on the gun conductor cable
through the Gun Cable Access Hole (A.2-2) in the
SP 170-I case front. Make sure the connector is all
the way in the brass connector block to obtain
proper gas flow. If the gun connector will not fully
insert, unscrew the thumbscrew on the connector
block a few turns. Rotate the connector so control
leads are on the underside and tighten the
Thumbscrew on the connector block.
4. Connect the gun trigger control lead terminals to
the two insulated 1/4" (6,4 mm) tab terminal con-
nector bushings located above the "Gun Trigger
Connection" decal in the wire feed section (A.4).
Either lead can go to either connector.
If the gun trigger switch being used is other than
3
that supplied, the switch must be a normally open,
momentary switch. The terminals of the switch
must be insulated from the welding circuit.
Malfunction of the SP 170-I may result if this
switch shorts to the SP 170-I welding output cir-
cuit or is common to any electrical circuit other
than the SP 170-I trigger circuit.
5
GAS CONNECTION
When using the MIG process, a cylinder of shielding
gas must be obtained. See Table B.1. Additionally a
flow regulator is required. For more information, refer
to the ACCESSORIES section.
SP 170-I
CAUTION
A-4
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