39
Rear Panel Description and Explanation:
1.
Gas Supply.
Connect the Gas regulator hose to
this point via the brass barb fitting. (Regulator is
customer supplied and not provided as standard
equipment at time of publication.) The hose
barb connection must be tight to prevent gas
leakage. Install extra clamp if needed to pre-
vent gas from escaping.
2.
Power Switch
. Turns unit on or off. This is a 2
pole single phase 120/ 240V breaker
-
type
switch. If it is switched to the left, this means
the unit is switched off. If it is switched to the
left, and the unit is plugged into a good power
supply, the unit should power up.
Note: When
switched off, the unit will continue to run and
appear to be switched on for up to 10 seconds
as the capacitors discharge. This is normal.
However, If the unit will not switch off for some
reason, the switch may be damaged. Turn off
the unit at the main circuit breaker, and contact
Everlast technical. Do not continue to use.
3.
Power Input Cable and NEMA 6
-
50P Plug.
The
PowerMTS 221STi requires 220/240 V single
phase 50/60 Hz power input. If necessary this
unit will operate on 208V input as it is within th
e 10% voltage allowance. If actual voltage is
below 205 volts, the unit may not function cor-
rectly. For 120V operation, use the pig
-
tail
adapter. No internal changes are necessary.
NOTE:
Output will be reduced on 120V. Do not
run unit on less than a 20 amp, time delay cir-
cuit on 120V. If operating on 120V at sustained
use at maximum capable output some nuisance
tripping of the circuit may be observed . If using
on 240V, a 40 amp breaker will be required.
If
used on a generator, the generator must la-
beled as
“
clean power
”
and provide less than
5% THD. Consult your generator manufacturer
for information regarding the clean power
rating on specific units. Everlast does not pro-
vide a list of approved generators. Manufactur-
ers rate their units as clean power independent-
ly according to industry standards. The plug is
the NEMA 6
-
50P. This is the standard plug for
welders operating on 240V in the US and Cana-
da. Other countries will have different configu-
rations.
4.
Fans.
The unit is equipped with a 4 fan system,
which offers quieter and more efficient cooling.
It must operate free of obstruction to preserve
the high duty cycle which it offers. Keep all ob-
jects or restrictions at least
12”
from all sides of
if the unit for proper cooling. If possible allow
18”.
Allow the unit to rest on the rubber pads/
feet mounted on the welder. Do not have the
bottom of the unit supported directly on the
metal pan so air can circulate around the
bottom as well. Do not run in an enclosed space
such as a cabinet or work box. Do not grind or
weld where sparks are directed toward the rear
of the unit or metallic particles will build up on
the fan blades and also on interior components.
If metal builds up on the fan blades, it can cause
the them to vibrate and ultimately fail.
5.
Ground Bolt.
The unit is equipped with an addi-
tional grounding point for applications requiring
a bonded ground. Under most conditions, the
use of the ground is not required. Consult a
local licensed electrician for installation and use
of this connection.
6.
Water
-
Cooler Plug.
(NA on early models) This is
a 240V cooler plug designed for use with Ever-
last Water Coolers. Do not use this plug for any
other application. This is a low amperage outlet
and is not designed to power any tools or other
accessories.
Setup Guide and Component Identification
Section 2
