Lincoln Electric IM10145 AUTOPRO 20 - Manual (Page 9)

A-2 INSTALLATION
AUTOPRO™ 20
A-2
Read entire Installation Section before installing the
AUTOPRO™ 20.
SAFETY PRECAUTIONS
ELECTRIC SHOCK CAN KILL.
• Only qualified personnel should
perform this installation.
• Only personnel that have read and
understood the AUTOPRO™ 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 AUTOPRO™ 20 power switch is to be in the
OFF (“O”) position when installing work cable
and gun and when connecting power cord to
input power.
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SELECT PROPER LOCATION
Place the AUTOPRO™ 20 where clean cool air can
freely circulate in and out the front, rear and side lou-
vers. 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 precau-
tions can result in excessive operating temperatures
and nuisance shutdown of the machine.
STACKING
The AUTOPRO™ 20 cannot be stacked.
TILTING
The AUTOPRO™ 20 must be placed on a stable,
level surface so it will not topple over.
HIGH FREQUENCY INTERFERENCE
PROTECTION
The AUTOPRO™ 20 employs a touch start mecha-
nism for arc initiation which eliminates high frequency
emissions from the machine as compared with spark
gap and solid state type high frequency 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 fol-
lowing steps, high frequency interference into the
AUTOPRO™ 20 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
AUTOPRO™ 20 or possibly even damage to the con-
trol system or power supply components.
INPUT ELECTRICAL CONNECTIONS
The AUTOPRO™ 20 must be connected to a Line-
Neutral system with protective grounding wire. Check
that the relevant electrical outlet is actually connected
to the distribution system grounding.
The AUTOPRO™ 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