CV-655
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B-4
OPERATION
B-4
1. INPUT POWER ON/OFF SWITCH - This tog-
gle switch turns the machine on or off. Putting the
switch in the ON position energizes the machine’s
input contactor applying input power to the machine.
Switching the switch to the OFF position de-
energizes the input contactor.
2. PILOT LIGHT - When the power switch is in the ON
position the machine’s white pilot light will illuminate.
If the input contactor de-energizes the machine in an
overload situation the pilot will still illuminate. In this
situation it will be necessary to reset the machine by
switching the power switch to the OFF then ON posi-
tion. (See Overload Protection Section)
3. OUTPUT VOLTAGE CONTROL - This control
provides continuous control of the machine’s output
voltage from minimum to maximum (typical full pot
range between 15 to 44 volts) as it is rotated clock-
wise.
4. OUTPUT TERMINALS ON/REMOTE - When this
switch is in the REMOTE position, the CV-655’s
output terminals will be electrically “cold” until a
remote device such as a wire feeder closes the #2
and #4 circuit in the MS-receptacle or terminal strip.
When this switch is in the ON position the machine’s
output terminals will be electrically energized all the
time.
5. LOCAL/REMOTE CONTROL SWITCH - When this
switch is set to the LOCAL
position, control of
the output voltage is via the output voltage control
on the CV-655’s control panel. When this switch is
set to the REMOTE position, control is through
a remote source such as a wire feeder via the #75,
#76, and #77 leads in the MS-receptacle or terminal
strip.
6. THERMAL PROTECTION LIGHT - If the
machine overheats due to lack of proper air flow
through the machine or due to exceeding the
machine’s duty cycle, thermostats will disable the
welding output and this light will illuminate. Input
power is still applied to the machine and the cooling
fan will continue to run. When the machine cools
the welding output will resume.
7. OPTIONAL VOLTMETER & AMMETER - Digital or
analog meter kits are available as field installed
options. Refer to the Accessories Section of this
manual.
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the case front of the CV-655. Refer to Figures B.1, and B.2
and corresponding explanations.
FIGURE B.1 CONTROL PANEL CONTROLS
CV-655
5
4
7
1
6
2
3
