Remote Amperage Output Contactor | Miller Electric KC237900 guide

l.Connect lead 58, originating at the preflow cir- cuit card, to the terminal on CR2 where lead 59 was removed in Step j.

m.Locate terminal JJ on electroslope circuit card. Route supplied lead 58, through the grommet in the electroslope box and connect it to terminal HH on the electroslope circuit card. Connect re- maining end of lead 58 to CR2 in addition to ex- isting lead 58.

n.Replace electroslope box cover.

o.Cover all splices with electrical tape. Tape or tie new or unused leads to existing wiring har- nesses.

p.Replace left side panel and top cover.

3-9. FIELD INSTALLATION OF OPTIONAL SPOT TIMER (Figure 3-3)

WARNING: ELECTRIC SHOCK can kill.

• Do not touch live electrical parts.

•Shut down welding power source, and dis- connect input power employing lockout/tagging procedure before beginning this installation.

Lockout/tagging procedures consist of pad- locking line disconnect switch in open position, removing fuses from fuse box, or shutting off and red-tagging circuit breaker or other discon- necting device.

IMPORTANT: All directions, such as left or right, are with respect to the operator facing the welding power source front panel. Retain all hardware removed during this procedure for re- installation.

A. Mechanical Installation (Figure 3-3)

1.Remove TIG-Unit top cover and both side panels.

2.Mount Spot Time switch S201 in the 1/2 in. (12.7 mm) diameter hole using supplied hardware.

3.Mount Spot Time control with attached printed cir- cuit card assembly TD3 in the 3/8 in. (9.5 mm) diam- eter hole using supplied hardware.

4.Affix supplied SPOT TIME label to front panel over both controls.

5.Attach supplied knob to Spot Time control shaft.

B. Electrical Installation (Figure 3-2)

IMPORTANT: Before preceeding with this installation familiarize yourself with the circuit diagram provided in this manual.

For All Models:

1.Remove jumper link 5 from terminals 33 and 88 on terminal strip 1T.

2.Connect lead 32 from spot time assembly to termi- nal 32 on 1T.

3.Connect lead 89 from spot time assembly to termi- nal 89 on terminal strip 2T.

4.Connect lead 88 from spot time switch S201 to ter- minal 88 on 1T.

5.Connect lead 33 from S201 to terminal 33 on 1T.

6.Tape or tie new leads together to maintain a proper lead dress inside the unit.

7.Replace both side panels and top cover.

3-10. REMOTE 14 RECEPTACLE INFORMATION AND CONNECTIONS (Figure 3-4 And Figure 4-1)

REMOTE 14

A AMPERAGE

OUTPUT

(CONTACTOR)

REMOTE 14 receptacle RC2 is used to connect any of the following equipment to the welding power source cir- cuitry:

a.Remote Contactor

b.Remote Amperage control

c.Combination of the above.

To make connections, align keyway, insert plug, and ro- tate threaded collar fully clockwise.

The following socket information is included in case the supplied cord is not suitable, and it is necessary to wire a plug or cord to interface with REMOTE 14 receptacle RC2.

IMPORTANT: When contact closure is provided be- tween sockets A and B, the welding power source out- put/contactor control circuit is energized.

Receptacle RC2 socket connections to the TIG-Unit control circuitry are as follows;

Socket A: Contactor control switch connection.

Socket B: Contactor control switch connection.

Socket C: Amperage control connection (maximum side).

Socket D: Amperage control connection (minimum side).

Socket E: Amperage control connection (wiper con- tact).

IMPORTANT: The remaining sockets in the receptacle are not used.

OM-530 Page 10

KC237900 specifications

The Miller Electric KC237900 is a standout model in the realm of welding technology, specifically designed for versatility and efficiency. This machine embodies Miller's commitment to innovation and quality, making it a popular choice among professionals and hobbyists alike.

One of the main features of the KC237900 is its advanced inverter technology, which allows the unit to operate efficiently across a range of welding applications. This technology ensures that the welder maintains a stable arc for precision welding, even on thin materials. The inverter design also contributes to a lighter and more compact machine, enhancing portability without compromising on power.

The KC237900 supports multiple welding processes, including MIG, Flux-Cored, and Stick welding. This versatility makes it suitable for a variety of projects, from automotive repairs to intricate fabrication tasks. The machine’s ability to handle diverse materials, including steel, stainless steel, and aluminum, further expands its application scope.

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In conclusion, the Miller Electric KC237900 is a high-performance welding machine that combines advanced inverter technology, versatility, and user-friendly features. With its ability to handle multiple welding processes and materials, along with its focus on reliability and ease of use, it stands out as an excellent choice for both experienced welders and newcomers to the trade. Whether for professional use or personal projects, the KC237900 delivers the performance and quality that Miller Electric is known for.