Miller Electric 500DX R Description Of Standard Controls See Section, Do not switch under load

5-2. Description Of Standard Controls (See Section 5-1)

.This unit has a max OCV control circuit

that resets the Amperage/Voltage Con- trol to maximum when the arc breaks. When an arc is struck, weld output con- trol returns to the front panel or remote control setting. The Amperage/voltage Control adjusts amperage only when welding and does not adjust open-circuit voltage.

1 Ampere Range Switch

Use switch to select one of five ampere ranges.

For most welding applications, use lowest amperage range possible to help prevent arc outages.

YDo not switch under load.

2 Amperage/Voltage Control

Control adjusts amperage within range se- lected by Ampere Range switch. Weld output

would be 223 A DC with controls set as shown (50% of 125 to 320 A).

3Remote A/V Control Receptacle And Switch

Connect optional remote control to RC3 (See Section 4-9). Use switch to select front panel or remote amperage control (see example below).

4Manual Stop Control

5Engine Start Button

6Ether Starting Aid Switch (Optional)

Push switch up and release while cranking engine to release ether.

YDo not use Ether if engine is running.

To Start: Press button and use Ether switch (if necessary). Release button when engine starts.

Do not crank engine while engine is turning.

To Stop: Pull control out and hold. Release control when engine stops.

7DC Ammeter (Optional)

8DC Voltmeter (Optional)

9Oil Pressure Warning Light

Light goes off if oil pressure is too low.

YIf light goes off, stop engine and check oil level.

10 Battery Charging Warning Light

Light goes on when battery is not charging.

YIf light goes on, stop engine and check engine belt.

11Engine Hour Meter

12Polarity Switch (Optional)

Example: Combination Remote Amperage Control

In Example:

Range = 125 to 320 A

Percentage Of Range = 50%

Max = 223 A DC (50% of 125 to 320)

			Max (223 A DC)
			Min (100 A DC)
Set Switches	Set Range	Set Percentage	Adjust Optional Remote Control

S-0774 / Ref. ST-180 933-B

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