Description Of Front Panel Controls - Miller Electric Legend 301 G Owner's Manual

6-2. Description Of Front Panel Controls

1 Process Switch
See Section 6-3 for Process switch informa-
tion.
2 Voltage/Amperage Adjust Switch And
Remote Receptacle
Use switch to select front panel or remote
voltage/amperage control. For remote con-
trol, place switch in Remote position and
connect remote control to Remote recep-
tacle RC4 (see Sections 5-8 and 6-4).
3 V/A Control
Use control to select weld voltage or
amperage. Control may be adjusted while
welding.
.
For maximum weld output (above 220
Amps), run unit at 3600 rpm. For weld
output below 220 Amps, operate unit at
3000 or 3600 rpm.
With Process/Contactor switch in Stick or
TIG setting, use control to adjust amperage.
With Process/Contactor switch in Wire posi-
tion, use control to adjust voltage. With V/A
Adjust Switch in Remote position, control
limits the remote amperage in Stick and TIG
modes, but has no effect in MIG modes.
4 Engine Hour Meter
Engine Controls
Speed Control Switch In Generator
Lock. Engine Control Switch in either
Run/Idle position.
Speed Control Switch In Weld.
Engine Control Switch in 3600/2400 RPM.
Speed Control Switch In Weld.
Engine Control Switch in 3000/1800 RPM.
Use hour meter to help schedule routine
maintenance (see Section 8-1).
5 Engine Choke Control
Use control to change engine air-fuel mix
when starting engine. Pull control out when
starting a cold engine. Push control in when
engine starts.
.
Do not run engine with Choke control
partially on or spark plugs will foul.
6 Engine Control Switch
Use switch to start engine, stop engine, and
select engine speed. (Use switch in com-
bination with Speed Control switch to select
engine speed.) In Run/Idle 3600/2400 RPM
position, engine runs at 2400 rpm at no weld
load, and 3600 rpm under weld load. In Run/
Idle 3000/1800 RPM position, engine runs at
1800 rpm at no weld load, and 3000 rpm
under weld load. In either position, engine
speed is determined by weld load and posi-
tion of Speed Control switch (see item 7 and
table below).
.
Generator power is available at recep-
tacles RC1 and RC2 only at 1800 rpm.
If generator is not locked at 1800 rpm,
Controlling Engine Speed And Weld/Generator Power Output
Engine Speed
1800 rpm (Power Speed)
Continuous
No Load: 2400 rpm (Idle Speed)
Load: 3600 rpm (Weld Speed)
No Load: 1800 rpm (Idle Speed)
Load: 3000 rpm (Weld Speed)
engine speed increases in response to
weld load and generator power output
stops at receptacles RC1 and RC2.
Generator power load does not affect
engine speed.
7 Speed Control Switch
Use switch to control engine auto idle func-
tion. Place switch in Generator Lock position
when not welding to lock engine speed at
1800 rpm for generator power at 60 Hz ac re-
ceptacles RC1 and RC2. (Generator power
is always available at 60-120 Hz receptacle
RC3.)
Place switch in Weld position to allow engine
speeds to be determined by position of En-
gine Control switch. The Speed Control
switch is not needed at start-up.
To Start: pull out choke and turn Engine
Control switch to Start position. Release
switch and slowly push choke in when
engine starts.
.
If the engine does not start, let the
engine come to a complete stop before
attempting restart.
To Stop: turn Engine Control switch to Off
position.
Generator Power
Output
5 kW/kVA Total From
All AC Receptacles
2.4 kW/kVA at 60-120 Hz
From AC Receptacle
RC3 Only
5 kW/kVA Total From
All AC Receptacles At 1800 rpm.
At 3000 rpm, Output Available
Only At 2.4 kW/kVA 60-120 Hz
AC Receptacle RC3
Weld Output
Welding Not
Recommended
3600 rpm:
20 − 300 A
3000 rpm:
20 − 220 A
OM-4411 Page 23