Adjusting Compressor Air Pressure - Miller Big Blue 600 Air Pak Owner's Manual

9-6. Adjusting Compressor Air Pressure

Tools Needed:
5/16, 3/8 in.
.
Complete Parts List available at www.MillerWelds.com
Air Compressor Assembly Left Side
2
Check compressor air pressure using
air pressure gauge known to be accu-
rate. If necessary, adjust air pressure
as follows:
1 Screw
Loosen jam nut securing screw. Turn
screw clockwise (increase pressure)
or counterclockwise (decrease) until
pressure is 125 psi (862 kPa).
.
Maximum weld output is reduced
if compressor air pressure is set
above 125 psi (862 kPa).
Tighten nut.
2 Pressure Relief Valve
Pressure relief valve opens and re-
leases pressure at 150 psi (1034
kPa). The pressure relief valve is not
adjustable.
1
255 862-A / Ref: 803 228
OM-279640 Page 69