Lincoln Electric SAE-400 SEVERE DUTY IM727, Руководство оператора

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B-3
OPERATION
ENGINE TEMPERATURE GAUGE
Displays the coolant temperature in the engine block.
ENGINE Oil Pressure Gauge
Displays the oil pressure to the engine. When the engine starts
running, watch for the oil pressure to build up. If no pressure
shows within 30 seconds, stop the engine and consult the engine
instruction manual.
Battery Charging Ammeter
Displays the current going from the charging alternator into the
batteries. It is normal for charging current to be high (above 15
amps) after starting or when the batteries are ‘low’ on charge.
Engine Hour Meter
The engine hour meter records the total running time on the
engine in hours. It can be used to keep a record of maintenance
on the engine and or welder.
For code 12311, the engine hour meter & engine fault indicator
LED are built-in the fuel guage.
Engine Protection System
The engine protection system shuts down the engine under high
coolant temperature or low engine oil pressure conditions by
allowing the fuel solenoid valve to close.
WELDER CONTROLS
POLARITY SWITCH
Turn the Arc Polarity switch to electrode positive or electrode
negative as required for each particular application.
CONTROL OF WELDING CURRENT
Purpose of Controls
The continuous “Current Control” is the main current adjuster. The
“Job Selector” is both a fine current adjuster and the continuous
Open Circuit Voltage adjuster. Open Circuit Voltage (OCV) controls
the arc characteristics.
“Job Selector”
The “Job Selector” dial is divided into four colored sections
providing OCV ranges as follows:
The “Job Selector” is usually set in the black range because it
provides a soft “Buttering “ arc desired for most welding. Some
operators prefer to set the “Job Selector” in the red range for a
snappy “Digging” arc when welding vertical up or overhead.
CURRENT CONTROL
Do not adjust the “Current Control” while welding because
this can damage the control.
The “Current Control” dial is calibrated in amperes on three
separate colored dials corresponding to the white, black and red
ranges of the “Job Selector” dial. For example: when the
“Job Selector” is set on the black range, the approximate welding
current is indicated on the black scale of the “Current Control”
dial.
How to Set the Controls
Assume you want a normal soft arc and about 135 amps, using a
5/32” (4.0 mm) electrode:
1. Set the “Job Selector” at the center of the black range.
2. Set the “Current Control” to read 135 amps on the black dial.
3. Start to weld.
4. If you want a little more current, turn the “Job Selector” up
(counterclockwise) to increase current. If you want a little less
current, turn the “Job Selector” down (clockwise) to decrease
current.
5. If dialing the desired current with the “Job Selector” moves
the setting outside the black range causing undesirable arc
characteristics, turn the “Job Selector” back to the center of
the black range. Then turn the “Current Control” up or down a
little as needed. Readjust the “Job Selector” for the exact
characteristics and current desired.
REMOTE CONTROL
A receptacle and “Local/Remote” control switch is located on the
lower front control panel. A remote control box with 100 ft. (30.5
m) of cord for adjusting the OCV at the welding site is available.
Putting the switch in the “REMOTE” position allows fine current
control at the remote control box while placing the switch in the
“LOCAL” position allows fine current control at the “Job Selector”
on the machine. When using the optional field installed CV adapter
(K385-[ ]) the “Local/Remote” switch is only active in the “VV”
mode.
SAE-400
®
COLOR TITLE OCV RANGE
White Large Electrodes High OCV
Black Normal Welding Medium OCV
Red Overhead & Vertical Low OCV
Grey Special Applications 3.25Extra-Low OCV
CAUTION