.A complete Parts List is available at www.MillerWelds.com

SECTION 6 − OPERATING THE WELDING GENERATOR

6-1. Engine Control Switches

4

3

2

Glow Plug Time

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

70°F (21°C)

0 seconds

 

 

 

32°F (0°C)

 

 

10 seconds

 

 

−4°F (−20°C)

 

 

 

20 seconds

Do not use glow plugs longer than 20 seconds.

Do not use ether to start engine. Using ether voids warranty.

1

Ref. 228 647-A

NOTICE − Disconnect equipment from auxil- iary power receptacles during start−up and shutdown. Some equipment can be damaged by changes in frequency as engine rpms change during start-up and shutdown.

1 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.

.Place switch in Run position to operate most MIG equipment.

2 Glow Plug Switch

If necessary, push switch down before start- up. See glow plug table for operating informa- tion.

3 Idle Lock Switch

Use switch to lock engine in idle speed during start-up. In Start position and Engine Control switch in Run or Run/Idle, engine is locked in idle speed. In Run/Idle position and Engine Control switch in Run/Idle, engine runs at idle speed at no load and weld/power speed under load.

In Run/Idle position and Engine Control switch in Run, engine runs at weld/power speed.

To Start: Use glow plug switch if necessary. Turn Engine Control switch to Start position. Release switch when engine starts.

.If the engine does not start, let engine

come to a complete stop before attempt- ing restart.

To Stop: Turn Engine Control switch to Off position.

.Close fuel valve to stop engine if Engine

Control switch does not work (see Section 5-4).

4Fuel Gauge/Maintenance Display See insert from maintenance label.

OM-217 455 Page 20

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Miller Electric 250 Operating the Welding Generator, Engine Control Switches, Do not use glow plugs longer than 20 seconds