Lincoln Electric IM944 POWERTORCH PLASMA 20 - Manual (Page 8)

A-2 INSTALLATION
POWERTORCH™ PLASMA 20
A-2
Read entire Installation Section before installing the
POWERTORCH™ PLASMA 20.
SAFETY PRECAUTIONS
ELECTRIC SHOCK CAN KILL.
• Only qualified personnel should per-
form this installation.
• Only personnel that have read and
understood the POWERTORCH™ PLAS-
MA 20 Operating Manual should install
and operate this equipment.
• Machine must be plugged into a receptacle which is
grounded per any national, local or other applicable
electrical codes.
• The POWERTORCH™ PLASMA 20 power switch is to
be in the OFF (“O”) position when installing work
cable, torch parts and when connecting power cord to
input power.
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SELECT PROPER LOCATION
Place the POWERTORCH™ PLASMA 20 where
clean cool air can freely circulate in and out the front,
rear and side louvers. Dirt, dust, smoke, gas or any
foreign material that can be drawn into the machine
should be kept at a minimum. Insure open space of at
least 15 ft. around the machine. Failure to observe
these precautions can result in excessive operating
temperatures and nuisance shutdown of the machine.
STACKING
The POWERTORCH™ PLASMA 20 cannot be
stacked.
TILTING
The POWERTORCH™ PLASMA 20 must be placed
on a stable, level surface so it will not topple over.
HIGH FREQUENCY INTERFERENCE
PROTECTION
The POWERTORCH™ PLASMA 20 employs a touch
start mechanism for arc initiation which eliminates
high frequency emissions from the machine as com-
pared with spark gap and solid state type high fre-
quency generators. Keep in mind, though, that these
machines may be used in an environment where other
high frequency generating machines are operating.
By taking the following steps, high frequency interfer-
ence into the POWERTORCH™ can be minimized.
(1) Make sure the power supply chassis is connected
to a good earth ground. The work terminal ground
does NOT ground the machine frame.
(2) Keep the work clamp isolated from other work
clamps that have high frequency.
(3) If the work clamp cannot be isolated, then keep
the clamp as far as possible from other work
clamp connections.
(4) When the machine is enclosed in a metal building,
several good earth driven electrical grounds
around the periphery of the building are recom-
mended.
Failure to observe these recommended installation
procedures may cause improper function of the POW-
ERTORCH™ PLASMA 20 or possibly even damage
to the control system or power supply components.
INPUT ELECTRICAL CONNECTIONS
The POWERTORCH™ PLASMA 20 must be connect-
ed to a Line-Neutral system with protective grounding
wire. Check that the relevant electrical outlet is actual-
ly connected to the distribution system grounding.
The POWERTORCH™ PLASMA 20 is rated for
115VAC input.
Use on 15 amp branch circuits will limit cutting output.
When the output is set at 16 amps or greater, the
input fuse or circuit breaker may “blow” in roughly 30
seconds or less (depending on fuse or circuit breaker
type).
To achieve 16-20 amp output with 115VAC input,
replace the 15 amp plug on the input cord with a 20
amp plug, and connect the unit to a 20 amp branch
circuit with super lag fuses (or equivalent breaker). To
install 20 amp plug: Connect the white (neutral) wire
under terminal clamp with silver screw, and black (hot)
wire under terminal clamp with brass screw. Connect
green wire under terminal clamp with green screw.
Tighten terminal wire clamp screws securely.
5-20P plug must comply with the standard for attach-
ment plugs and receptacles, UL498. This product is
acceptable for use only when an attachment plug as
specified is properly attached to the supply cord.
• Failure to wire as instructed may cause personal
injury or damage to equipment.
• To be installed or checked by an electrician or
qualified person only.
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WARNING
WARNING