Arc Machines 307 - Manual (Page 41)

Arc Machines, Inc. Model 307 Orbital Tube Welder Training
Document No. 740096 Chapter 4. Page 7.
Rev. A
MODEL 307-CW INSTALLATION
The Model 307-CW mounts beneath the 307 power supply and cir-
culates water and coolant through the weld heads and cables to prevent
overheating. The CW is recommended for welding heavy-walled materi-
als or for bench welding where high productivity is required. Most AMI
weld heads are water-cooled but the Model 9-500 and 9-250 weld heads
are not. Heads without water cooling may be cooled between welds by
placing in front of a fan.
Note: The 9-500C weld head is a water-cooled version of the 9-500.
Input power The Input Power cable is attached to the back of the Model
307-CW and connected to the back of the Model 307 power supply.
The 307 Adapter cable has two water fittings that connect into the op-
tional 307-CW. Water circulates from the CW through those hoses to the
weld head and back to the CW.
The maximum flowrate for the 307-CW is 2 liters per minute (.5 gal-
lons) at 35 PSI. The maximum delivery pressure is 45 PSI with a bypass
relief valve. Total 307-CW water capacity is 0.75 Gallons U.S. (2.8 liters).
A glycol coolant-water mixture is recommended. The M307-CW unit op-
erates on 12 volts DC at 2.6 Amps (4 AMP indicated rating is for
Model 307 Power Supply and Optional 307-CW
coolant IN
coolant OUT
Model 307 Power Supply
307-CW