Miller Electric PipePro 304 manual Description Of Controls See Section

6-2. Description Of Controls (See Section 6-1)

.The fan motor is thermostatically

controlled and only runs when cooling is needed.

Engine Lights

1 Engine Temperature Light

Light goes on and engine stops if engine tem- perature is too high.

NOTICE − Stop engine and fix trouble if En- gine Temperature light goes on.

2 Engine Oil Pressure Light

Light goes on and engine stops if oil pressure is too low. Light goes on momentarily during start-up but goes out when engine reaches normal oil pressure.

NOTICE − Stop engine and fix trouble if En- gine Oil Pressure light stays on after start-up.

3 Battery Charging Light

Light goes on if engine alternator is not charg- ing battery. Engine continues to run.

NOTICE − Stop engine and fix trouble if Bat- tery Charging light goes on.

Engine Gauges

4 Engine Hour Meter

Use hour meter to help schedule routine main- tenance.

5Fuel Gauge

Weld Controls

6Dig/Inductance Control

Control adjusts Dig when Stick mode is se- lected on mode switch. When control is set to- ward minimum, short-circuit amperage at low arc voltage is the same as normal welding amperage.

When set toward maximum, short-circuit am- perage is increased at low arc voltage to as- sist with arc starts and help prevent the elec- trode from sticking while welding (see volt-am- pere curves in Section 4-4).

Select setting best suited for application.

Control adjusts inductance when MIG or V-Sense Feeder position is selected on the

mode switch. Inductance determines the “wetness” of the weld puddle. When set to- ward maximum, “wetness” (puddle fluidity) in- creases.

Control is not functional when Pulsed MIG or one of the TIG modes is selected.

7 Voltmeter

Meter displays weld voltage and help mes- sages (see Sections 6-3and 8-10).

8 Ammeter

Meter displays weld amperage and help mes- sages (see Sections 6-3and 8-10).

9V/A (Voltage/Amperage) Adjustment Control

10Mode Switch

The Mode switch setting determines both the process and output On/Off control (see Sec- tion 6-4). Source of control (panel or remote) for the amount of output is selected by the V/A Control switch.

For Air Carbon Arc (CAC-A) cutting and goug- ing, place switch in Stick position. For best re- sults, place Dig/Inductance control in the max- imum position.

11V/A (Voltage/Amperage) Control Switch And Remote 14 Receptacle

For front panel control, place switch in Panel position and use the V/A Adjustment control.

For remote control, make connections to Re- mote 14 receptacle (see Section 5-8), and place switch in Remote position. In most modes, remote control is a percent of V/A Ad- justment control setting (value selected on V/A Adjustment control is maximum available on remote). In the MIG mode, remote control provides full range of unit output regardless of V/A Adjust control setting.

Engine Starting Controls

12 Glow Plug Switch

Use switch to energize glow plugs for cold weather starting. Glow plugs warm in about six seconds and engine can be started (see starting instructions following).

NOTICE − Do not use glow plug longer than 20 seconds.

13 Engine Control Switch

Use switch to start engine, select speed, and stop engine. In Run/Idle position, engine runs at idle speed at no load, and weld/power speed under load. In Run position, engine runs at weld/power speed.

To Start:

NOTICE − Do not use ether as a starting aid. Using ether voids warranty.

Above 325 F: turn Engine Control switch to Start. Release switch when engine starts and Engine Oil Pressure light goes out.

.If engine does not start, let engine come

to a complete stop before attempting re- start.

Below 325 F: turn engine control switch to Run/Idle position. Push Glow Plug switch up and hold about six seconds. Turn Engine Con- trol switch to Start. Release switch when en- gine starts and Engine Oil Pressure light goes out.

See Section 6-6for additional information on cold weather operation.

.If engine does not start, let engine come

to a complete stop before attempting re- start.

To Stop: turn Engine Control switch to Off position.

.Push engine stop lever to stop engine if

Engine Control switch does not work (see item 14).

14 Engine Stop Lever

Use lever to stop engine if Engine Control switch does not work.

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