HTP MTS 160, Owner'S Manual

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11) Slope Down (TIG Mode) Arc Force (Stick)
In the TIG welding mode, this control adjusts the slope down.
The slope down is the amount of time it takes your MTS 160
to go from the preset welding current to off. A longer slope
down time will gradually cool your weld and help to prevent
“cratering”. The slope down is adjustable from .1 sec to 10 sec.
In the Stick welding mode, this control adjusts the Arc Force.
The arc force is how “hard” or “soft” the welding arc is. The
minimum setting produces a softer arc, while the maximum
setting produces a “harder” arc with more “driving” force
behind it. The “harder” arc may produce more spatter.
Front Panel Receptacles
1) Adapter Block
This is where the MIG welding gun or the TIG torch
connects to the machine. This single connection houses the
power, welding wire, shield gas, and the trigger wires.
To install the welding gun or TIG torch, simply insert the
male central adapter block (on welding gun) into the female
central adapter block (on welding machine). These will only
fit together in one way. Tighten the adapter nut securely
by hand.
2/3) Power Output Receptacles
3 is the positive power output receptacle and 2 is the
negative power output receptacle. These control the polarity
of the machine. For most MIG welding applications with
shield gas, the ground cable will be connected to the
negative receptacle (2). For most MIG welding applications
with flux cored wire and most TIG welding applications, the
ground cable will be connected to the positive receptacle (3).
If you have burn-through problems when welding on
extremely thin material with a solid wire and shielding gas,
you may want to reverse the polarity as this will reduce the
penetration and make it easier for you to weld thin material.
This is also where you will install your optional electrode
holder if you are arc welding. If you will be arc welding DC
electrode positive, then the electrode holder will go in the
positive receptacle (3) and the ground will be installed in the
negative receptacle (2). If you will be arc welding DC
electrode negative, then the electrode holder will go in the
negative receptacle (2) and the ground will be installed in
the positive receptacle (3).
When inserting the end of the ground cable into either
power output receptacle, secure the ground cable by twisting
it clockwise 1/2 turn. It is important that the ground clamp
be connected to a good, clean, surface. Failure to do so will
cause poor quality welds. Place the ground clamp as close
as possible to the area to be welded.
Polarity Adjustment
The polarity must be adjusted correctly for MIG welding with
shielding gas, flux cored MIG welding, and TIG welding. This
connection is located in the wire feed compartment. The wire
connected to the polarity terminal goes to the adapter block and
determines the polarity of the adapter block.
For most MIG welding applications using shielding gas, the
polarity wire will be connected to the positive terminal (1) as
shown. This would make the welding gun positive and the
ground cable would be plugged into the negative output
receptacle on the front of the welder (see Fig 3).
For most flux cored MIG welding and TIG welding, the polarity
wire will be connected to the negative terminal (2). This will
make the torch negative. The ground cable would be connected
to the positive output receptacle on the front of the welder (see
Fig 3).
To change the polarity from positive to negative, unplug the
welder from the power supply. Remove the insulated nut.
Remove the polarity wire from the positive terminal, and install
it on the negative terminal. Tighten the insulated nut securely
on the negative terminal.
6
Figure 3
Figure 2
1
2 3