Everlast POWER i-MIG 253DP Operator's Manual page 23

Section 2
Connect the MIG torch by aligning pins on the
gun cable with the receptacle and pushing in.
Twist the collar on the cable connector to lock in
place. Do not use pliers or other tools to tighten.
Hand tighten only. This type of gun connection is
typically superior to many others because it is
self contained, does not require tools to connect
and does not have a separate control connector
that also needs to be plugged. This connector
has a reliable and proven track record with many
companies throughout the world. Note: When
using the spool gun or the push-pull gun with
this welder, this port also becomes the attach-
ment point for the spool gun, so the main gun
will need to be removed. This connection be-
comes live (hot) when the stick mode is activat-
ed. You may leave the gun connected during
stick welding. However, the wire and nozzle
should be protected from accidentally touching
the work or welder during use. A short piece of
rubber hose can be used to slide over the nozzle
to protect against accidental touching of the
wire to the work piece or welder. A "best" prac-
tice is to remove the gun when welding in stick
mode.
17. Pull Motor Connector. The push-pull power lead
connects to this 2 pin connector on the Push/Pull
gun. This powers the gun.
18. Positive Polarity Connector (+). This front
mounted connector terminal is a standard 35
series DINSE style connector. It provides a posi-
tive polarity output. When using stick mode, con-
nect the cable from the electrode holder to this
terminal for most electrodes and applications.
When using Flux-core or dual shield, connect the
work clamp to this port, unless the wire manu-
facturer specifically states an electrode positive
polarity (also referred to as Reverse Polarity).
19. Control. This seven pin plug is used to control
wire speed when the spool gun or push-pull gun
when it is connected.
20. Negative Polarity Connector (-). This front
mounted connector terminal is a standard 35
series DINSE style connector. It provides nega-
tive polarity output. When using stick mode, con-
nect the cable rom the work clamp to this termi-
nal for most applications. When using Flux-core
or dual shield, change polarity inside the ma-
chine by changing the buss-bar position, unless
the wire manufacturer states to use electrode
positive. Do not use this connection for most Flux
-core and Dual shield wires that require Elec-
Setup Guide and component Identification
trode negative polarity (Straight Polarity). Connect
to the work clamp while in MIG/Stick mode.
Features found in Weld Cycle Graph (item #11) from left
to right.
1. Pre-Flow Timer. To improve weld quality before the
weld begins and to reduce porosity, shielding gas Pre-
Flow has been provided. This is especially important in
Pulse-MIG welding. Pre-Flow is the length of time that
shielding gas flows before arc initiation after the gun
trigger is pressed. The Pre-Flow provides a blanket of
shielding gas to surround and enclose the weld area so
that the wire does has a lesser chance of oxidizing and
creating porosity due to the presence of oxygen in the
weld at the time of arc initiation.
2. Hot Start. Hot Start creates an initial higher "surge"
of volts and amps at the beginning of a weld. This is
designed to help reduce porosity and lack of fusion at
the start. In special circumstances, it also can be used
to set a lower, cooler start if needed to prevent burn-
through. Aluminum is especially prone to lack of fusion
at the start of the weld. The Hot Start feature is only
available in Single Pulse MIG or Double Pulse MIG
modes and can only be selected and adjusted in the 4T
Special mode. Any other combination will deny access
to this feature. Changing to 2T or 4T will cause the
unit to deny the use of Hot Start even if originally set
in 4T Special mode and is in a Pulse MIG mode.
3. Inductance. Inductance varies the current rise time
during MIG welding. This affects the actual point where
the current potential has risen sufficiently to burn back
the wire after pinching off and depositing in the puddle.
The point at which it has burned back is considered the
"pinch point." This is where the wire will begin to once
again melt and transfer. To put it in more practical
terms, the user will see that the wire is sticking out
longer or shorter from the MIG torch before it burns
away, depending upon the exact setting. This controls
spatter, penetration and bead profile. When the arc
force knob is rotated from one extreme to the other,
the operator will observe that the arc is more stiff with
a shorter arc length toward the high end (towards 10)
or more fluid at the low end (towards 1). Bead profile
changes will occur as well. A stiffer arc will produce a
deeper but more narrow profile. A fluid arc will pro-
duce a wider, shallower weld, usually with an improved
bead appearance and less spatter. If long arc length,
especially while welding Aluminum, is encountered and
becomes a problem, increase arc length towards the
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