Miller TRAILBLAZER 275 DC, Руководство пользователя

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A complete Parts List is available at www.MillerWelds.com
OM-4426 Page 31
6-2. Description Of Front Panel Controls (See Section 6-1)
1 Process/Contactor Switch
See Section 6-4 for Process/Contactor
switch information.
2
Remote Receptacle
Use receptacle to connect remote control or
wire feeder.
When a remote voltage/amperage control is
connected to the Remote receptacle, the
Auto Sense Remote feature automatically
switches voltage/amperage control to the re-
mote control (see Sections 5-12 and 6-7).
With remote voltage/amperage control con-
nected, weld output in CC mode is deter-
mined by a combination of front panel and re-
mote control voltage/amperage settings. In
CV mode, weld output is controlled through
remote control only.
If no remote voltage/amperage control is
connected to the Remote receptacle, the
front panel Voltage/Amperage control ad-
justs voltage and amperage.
3 And 4 Displays
Displays can show weld process information
(voltage and amperage) or maintenance in-
formation (hourmeter, oil change count-
down, or rpm).
Meter Weld Functions : In Wire modes,
Voltmeter displays preset weld voltage
when not welding. Meters display actual volt-
age and amperage when welding and for five
seconds after welding has stopped.
In Stick and TIG modes, Voltmeter reads
ON and Ammeter displays preset amperage
when not welding. Meters display actual volt-
age and amperage when welding and for five
seconds after welding has stopped.
Meter Engine Maintenance Functions:
See inset from maintenance label.
5
Fuel Level Indicator
With Engine running or Engine Control
switch in Run or Run/Idle position, LED’s in-
dicate fuel left in tank.
6
Voltage/Amperage Control
Use control to select weld voltage or
amperage. Control may be adjusted while
welding.
With Process/Contactor switch in any Stick
or TIG setting, use control to adjust amper-
age. With Process/Contactor switch in any
Wire position, use control to adjust voltage.
When a remote voltage/amperage control is
connected to Remote receptacle RC4, con-
trol sets the maximum amperage in Stick and
TIG modes, but has no effect in MIG modes.
7
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.
Use switch in combination with meters to de-
termine total engine hours and hours until
next recommended oil change (see items 3
and 4 earlier in this section).
The unit will not return to idle speed
when the remote contactor is on and
Process/Contactor switch is in any Wire
position. The unit will return to idle speed
in all other modes.
8 Engine Choke Control (Carbureted
Engines Only)
Use control to change engine air-fuel mix
when starting engine.
To Start : pull out choke (if equipped) and
turn Engine Control switch to Start position.
Release switch when engine starts. Slowly
push in choke (if equipped).
If the engine does not start, let the
engine come to a complete stop before
attempting restart.
During cold weather some gasoline en-
gines encounter difficulties that are easi-
ly remedied. See Section 6-3 and 8-14.
To Stop : turn Engine Control switch to Off
position.
9
DC Polarity/AC Switch (AC/DC Models
Only)
!
Do not switch under load.
Use switch to select AC weld output or polar-
ity of DC weld output.
6-3. Cold Weather Engine Operation
Ref. 216 170
1 Engine Control Switch
Carburetor Icing
Carburetor icing causes the unit to drop below the normal idle speed and then
stall. This condition occurs when the temperature is near freezing and the rela-
tive humidity is high. Ice forms on the throttle plate and inner bore of the carbu-
retor. The engine typically restarts without problems but soon stalls again.
Treat gasoline with a fuel de − icer product (isopropyl alcohol).
Place the Engine Control switch in the Run position.
Run engine only when expecting to frequently load it.
Breather Icing
Oil breather/pulse line icing occurs in severe cold (continuously below 0 F).
Moisture accumulates in the oil from piston ring blow − by if the engine is exten-
sively idled. This may cause vacuum line freezing, oil breather tube freezing
or ice in the carburetor. All of these cause operating problems. Due to ice in
the lines, the engine may not restart until it is warmed to above freezing.
Load engine and reduce idle times to prevent engine shutdowns.
Use an electric fuel pump to avoid pulse line freezing.
Install engine cold − weather kit.
Both Kohler (1-800-544-2444) and Subaru (1-800-277-6246) offer kits for cold
weather operation. The user can install these kits. Both kits pull heated air from
the muffler surface into the carburetor and shut the cold air off. This increases
engine temperature during operation in both idle and high speed.
When the ambient temperatures become warmer (above 45
_
F) the air
flow will have to be returned to normal.
1
Frequently
Loaded
Infrequently
Loaded