Lincoln Electric CV-655 - Manual (Page 17)

B-1 OPERATION B-1
GENERAL DESCRIPTION
The CV-655 is an energy efficient constant voltage DC power
source that produces outstanding arc characteristics.
Four models are available:
Domestic - all 60 Hertz models except 230/460/575v.
NEMA Class 1 rated
Canadian - 230/460/575v 60 Hertz
NEMA Class 1 rated
European - 50/60 Hertz models rated for IEC 974-1
Export - 50/60 Hertz models NEMA Class 1 rated
RECOMMENDED PROCESSES AND
EQUIPMENT
The CV-655 is designed for GMAW (MIG), FCAW,
(except NR-203 family electrodes) and CV semi-auto-
matic submerged arc welding processes (SAW), plus
the capability of air carbon arc gouging (AAC) up to
3/8” (10mm) diameter carbons. Limited CV automatic
submerged arc welding with 5/64” and smaller wires.
The CV-655 is recommended for use with Lincoln’s
DH-10 or LN-10 as well as the LN-7*, LN-7 GMA*, LN-
742, LN-8*, LN-9*, LN-9 GMA*, LN-23P and LN-25
semiautomatic wire feeders. It is also recommended
for use with the NA-3, NA-5 and NA-5R automatic
feeders, but “cold starting” for sub-arc cannot be used
(it must be jumpered out).
* The 14-pin MS receptacle on the European models
does not provide 115 VAC for these feeders; 115 VAC
must be obtained from terminal strip.
There are no provisions on the CV-655 for paralleling.
DESIGN FEATURES AND ADVANTAGES
• Two inductance positions: operator can choose the opti-
mum arc characteristics.
• Power on/off switch with pilot light and thermostat tripped
indicator light.
• Full range output voltage control for easy operation.
• Panel switches for remote or local output control, and out-
put on or remote selection.
• Hinged cover to protect output terminals and auxiliary con-
nections.
• 42 VAC, 10 amp auxiliary power available for the wire
feeder; circuit breaker protected.
CV-655
ELECTRIC SHOCK
can kill.
• Do not touch electrically live parts
or electrode with skin or wet
clothing.
• Insulate yourself from work and
ground.
• Always wear dry insulating
gloves.
FUMES AND GASES
can be dangerous.
• Keep your head out of fumes.
• Use ventilation or exhaust to
remove fumes from breathing
zone.
WELDING SPARKS
can cause fire or
explosion
• Keep flammable material away.
• Do not weld on containers that
have held combustibles.
ARC RAYS
can burn.
• Wear eye, ear and body
protection.
SAFETY PRECAUTIONS
Read and understand this entire section before oper-
ating the machine.
GENERAL WARNINGS
Observe additional Safety Guidelines detailed
throughout this manual.
WARNING