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B-3
OPERATION
B-3
A. POWER SWITCH
- A two-position toggle switch.Controls the
input power to the CV-300.
B. VOLTAGE ADJUST
- Controls the CV-300 output voltage.
C. THERMAL PROTECTION INDICATION LIGHT
- Indicates that the protection thermostat has
activated. The digital meter will display "E10"
when this occurs. When the light turns off,
the machine will be capable of supplying
welding output power again.
NOTE: Leaving the power switch in the "ON" posi-
tion will result in the most rapid cooling.
D. VOLTS/AMPS SWITCH
- Selects either output current or arc voltage
to be displayed on the digital meter.
E. DIGITAL VOLTMETER/AMMETER
- Displays the CV-300 output current, or the
arc voltage.
NOTE: Due to voltage drops in the welding cables
and at cable connection points, the actual arc
voltage may be lower than that displayed on
the voltmeter. Use welding cables of the
proper capacity and make sure all connec-
tions are tight to minimize this effect.
F. 42 VOLT CIRCUIT BREAKER
-Protects the 42 volt 41-42 circuit in the wire
feeder receptacle from overloads and shorts.
If this circuit breaker opens, the CV-300 will
work normally. However, any equipment
powered by the 42 volt circuit will not work.
G. 115 VOLT CIRCUIT BREAKER
-Protects the 115 volt 31-32 circuit in the wire
feeder receptacle from overloads and shorts.
If this circuit breaker opens, the CV-300 will
work normally. However, any equipment
powered by the 115 volt circuit will not work.
H. LOCAL/REMOTE SWITCH
-Determines whether the welding voltage is
controlled at the CV-300, or controlled
remotely by a remote output control (such as
a K857).
CV-300
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the case front of the CV-300. Refer to Figures B.1, and B.2
and corresponding explanations.
FIGURE B.1 - CONTROL PANEL
A
B
C
D
E
F
G
H
J
A. POWER SWITCH F. 42 VOLT CIRCUIT BREAKER
B. VOLTAGE ADJUSTMENT G. 115 VOLT CIRCUIT BREAKER
C. THERMAL PROTECTION INDICATION LIGHT H. LOCAL / REMOTE SWITCH
D. VOLTS / AMPS SWITCH J. WIRE FEEDER VOLTMETER SWITCH
E. DIGITAL VOLTMETER / AMMETER