Pro-Weld ARC 1850, Operation Manual

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ARC 1 8 5 0
PRO WEL D
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9. Be sure to provide proper ventilation when welding in a con-
fined area.
10. Never look at the electric arc without wearing protective
eye shields.
11. Always use the proper protective clothing, gloves, etc.
12. Never strike an arc when near a bystander who is unaware
of the dangers of ultraviolet light to their eyes.
4.2 Power Supply Safety Precautions
1. Always connect the frame to the power supply to ground in
accordance with the National Electric Code and the manufac-
turer’s recommendation.
2. Installation, servicing or trouble shooting should be done by
qualified personnel trained to work on this type of equipment.
3. Before servicing this piece of equipment, turn off the discon-
nect switch at the fuse box.
4. When in operation, all the covers must be on the equipment.
5.0 GENERAL DESCRIPTION
THE PROCESS
Stud welding is a time saving tool which semi-automatically
arc welds the FULL CROSS-SECTION of a weld stud to the
base material in a fraction of a second and develops superior
strength over normal arc welding procedures.
Since the ARC-1850 stud welding system provides the proper
arc length and allows you to select the proper arc time and
welding current, the variables that affect weld quality are mini-
mized.
THE UNIT
The ARC-1850 is a fully regulated stud welding power supply
that is available in a single or dual gun version. Both versions
have the constant output feature that allows the unit to be used
as a power source that can operate external stud welding con-
trol units. An added feature in the ARC-1850 is the ability to
dial in the desired weld time and weld current before even
making a weld. By selecting the setup mode, the weld time and
current can be adjusted and displayed on the front panel’s digi-
tal meters.
.
A specially designed electronic gun control circuit has been
incorporated in this system. If a fault condition occurs due to a
shorted gun solenoid or a faulty control cable, the circuit will
prevent gun triggering and eliminate damage to printed circuit
boards. The ARC-1850 system is capable of welding studs
from 12ga. to 3/4” diameter with precision and repeatability.
6.0 ELECTRICAL INPUT REQUIREMENT
This welding power source is designed to be operated from
three-phase, 60 Hertz, AC power supply which has a line volt-
age rating that corresponds with one of the electrical input volt-
age shown on the nameplate or input data label. Consult the
local electric utility if there is any question about the type of
electrical system available at the installation site or how proper
connections to the welding power source are to be made.
The ARC-1850 should be operated from a separate fused or
circuit breaker protected circuit. Install three primary leads plus
one ground wire (see tables for proper wire and fuse sizes)
through the inlet hole in the rear of the unit, using proper strain
relief. The primary cables connect to the terminals L or line.
The fourth lead (ground connection) should be fastened to the
welder from the ground bolt. The other end of the ground lead
or cable should be attached to a suitable ground such as a water
pipe, ground rod, etc.
This unit is equipped with input voltage jumper links either
installed or in a bag on the jumper link board to allow opera-
tion from different line voltages. If installed, the jumper links
are positioned for the highest voltage stated on the nameplate
or on the input data label. In either case the jumper links should
always be checked to see if they are properly positioned for the
voltage being used.
Open the access door located on the lower portion of the rear
panel to expose the jumper link board. If necessary, reposition
the jumper links to match the line voltage being used. (see Fig-
ure 6.1)