16
To maintain adequate pressure to the
blaster
:
y
From the air compressor to 50 ft (15 m) use a flexible 1 in (2.5 cm) air hose (preferably the
hoses supplied with the system).
y
From the air compressor to beyond 50 ft (15 m) make sure the pipe is 1 in (2.5 cm) in
diameter before attaching the air hose.
Water and rust will collect in the line. Before plugging into the air supply, purge the line, to prevent
contamination of the
CO
2
or abrasive media
.
Using Portable Air
(minimum of 185 cfm (5.6 m3/m))
Portable diesel air compressors are frequently not optimized for dry ice blasting units and are
therefore not able to cool or remove air moisture.
The Cold Jet After Cooler is required to reduce the discharge air temperature 180° F (82° C) to within
15°F (-9°C) of ambient air temperature. Visit coldjet.com to learn more about purchasing a Cold Jet
After Cooler.
Without the After Cooler, the following may occur:
1.
Incoming air moisture may rapidly cool and freeze at the blaster feeder.
2.
Water ice may accumulate in the feeder, distorting the air flow and seal.
3.
Water ice buildup may continue inside the blast hose, to the nozzle.
4. Media may clump.
5.
Water ice may break off inside the hose and lodge in the nozzle, causing a jam.
6.
Water ice, may exit the nozzle, and damage the target surface.
If blasting continuously, an air dryer will further reduce the air moisture (dew point). Desiccant
dryers produce a dew point of -40° F (-40° C), resulting in a dew point low enough for continuous
blasting.
To verify the compressor is of adequate size for the system, the air compressor needs to produce an
air volume 10% greater than the blast system’s maximum required air volume.
To determine adequate air volume, watch the pressure gauge or digital pressure display while
blasting.
y
If the gauge drops slowly the compressor is insufficient.
y
If the gauge drops quickly there is a restriction or the pipe is too small.
y
If the gauge stays steady then the compressor is adequate.
To maintain adequate pres
sure, the hose size from the compressor to the blast system needs to be
1 in (2.5 cm) in diameter.
Summary of Contents for E-CO2 150
Page 1: ...Original Instructions English January 2020 Dry Ice Blasting Abrasive E CO2 150 Operator Manual...
Page 4: ......
Page 37: ...33 Technical Schematics Pneumatic Schematics 34 39...
Page 38: ...34...
Page 39: ...35 C100 E CO2 150 Schematic...
Page 40: ...36...
Page 41: ...37 Aero 80FP E CO2 150 Schematic...
Page 42: ...38...
Page 43: ...39 PLT 60 E CO2 150 Schematic...
Page 44: ......
