Installation, Input power connection, Duty cycle – Lincoln Electric IDEALARC R3R 375-I User Manual
Page 8: Output connections, Warning, Caution
A-1
INSTALLATION
IDEALARC® R3R 375-I, 500-I AND 600-I
A-1
INSTALLATION
FALLING EQUIPMENT can cause
injury.
• Do not lift this machine using lift
bail if it is equipped with a heavy
•
accessory such as trailer or gas cylinder.
• Lift only with equipment of adequate lifting
capacity.
• Be sure machine is stable when lifting.
The machine should be located in a clean, dry place
where there is free circulation of clean air, such that air
movement entering the front and exiting the back will
not be restricted. Dirt and dust that can be drawn into
the machine should be kept to a minimum. Failure to
observe these precautions can result in excessive
operating temperatures and nuisance shutdown of the
machine.
The Idealarc R3R welders can be stacked three high
when the following precautions are observed:
1. Be sure the bottom machine is on a firm, level sur-
face suitable for the total weight [up to 1340 pounds
(608 kg)] of the stacked machines.
2. Stack the machines with the fronts flush. Be certain
the pins on the top front corners of the lower
machines fit through the holes in the base rails of
the upper machines.
3. No unit heavier than the bottom unit should be
stacked on top of it. For example, an R3R 500-I
shall not be slacked on top of an R3R 400-I, but an
R3R 400-I may be stacked on top of an R3R 500-I.
INPUT POWER CONNECTION
ELECTRIC SHOCK can kill.
• Have an electrician install and ser-
vice this equipment.
• Turn the input power off at the fuse
box before working on equipment.
• Do not touch electrically hot parts.
Remove the rear access panel. Connect the three
phase input power to the three line terminals on the
input contactor, and the earth ground lead to the
ground stud marked with the
symbol. Install the
reconnect panel for the proper input voltage per the
diagram pasted inside the access panel cover.
DUTY CYCLE
The maximum output rating of this welder is at a 35%
duty cycle. Duty cycle is based on a ten minute period.
Therefore, the welder can be operated at the maximum
rated output for 3.5 minutes out of every 10 minute
period without overheating.
Failure to follow these instructions can cause immedi-
ate failure of components within the machine.
When powering welder from a generator be sure to
turn off welder first, before generator is shut down,
in order to prevent damage to welder!
------------------------------------------------------------------------
OUTPUT CONNECTIONS
With the machine power switch off, the output leads
are connected to the Magnum™ Twist-Mate™ output
terminals marked “–” and “+”. They are located at the
lower right and lower left corners of the front panel.
Strain relief for the electrode and work cables is pro-
vided by routing the leads through the rectangular
holes in the base before the connections to the output
terminals are made. Twist-Mate Lead plugs must be
installed to the output cables before connections can
be made to the power source. See S18737 instructions
included with the plugs.
Theommended output cable sizes can be found in the
Table below.
WARNING
WARNING
Copper Wire Size
Input
Type 75°C in Conduit
Super Lag
R3R
Volts
Amps
3 Input
1 Ground
Fuse Size
Welder 50/60 Hz
Input
Wires
Wire
in Amps
220
67
8
8
80
375-I
380
39
10
10
60
440
34
10
10
40
220
90
6
6
125
500-I
380
52
8
8
80
415-440
45
10
10
60
220
103
4
6
150
600-I
380
60
8
8
90
440
52
8
8
70
Machine Up to 100 ft. 100 to 150 ft. 150 to 200 ft. 200 to 250 ft.
Size
(30 m)
(30 – 46 m)
(46 – 61 m)
(61 – 76 m)
375-I
1/0 (54 mm
2
) 1/0 (54 mm
2
)
2/0 (68 mm
2
)
3/0 (86 mm
2
)
500-I
2/0 (68 mm
2
) 2/0 (68 mm
2
)
3/0 (86 mm
2
) 4/0 (108 mm
2
)
600-I
2/0 (68 mm
2
) 3/0 (86 mm
2
)
3/0 (86 mm
2
) 4/0 (108 mm
2
)
CAUTION