Maintenance
OMAX JetMachining® Center Operator’s Guide
400433D-EN
4 - 39
16. Replace all removed pump panels and close the pump lid.
17. Adjustment of the ADO pressure is complete.
Note:
The ADO pressure will require readjusting anytime a different sized orifice is installed in the nozzle, or a
defective or worn jewel is replaced with a new one.
Changing the Dump Valve Orifice Size
Excessive differences in pressure between the cutting head pressure and the traverse or dump valve
pressure may cause premature failure throughout the plumbing system in parts such as the on/off body,
swivel body, UHP (ultra high-pressure) plumbing, and the pump outlet manifold. It is very important that
the size of the cutting orifice be matched up with the correct dump valve orifice size as follows:
• Match a 0.010" cutting orifice with a 302028-10 dump orifice
• Match a 0.014" cutting orifice with a 302028-13 dump orifice
• Match a 0.015" cutting orifice with a 302028-14 dump orifice
Follow these steps to change the dump valve orifice assembly size to match the size of the nozzle orifice
in use.
Disassemble the Dump Valve and Removing the Orifice Assembly
1.
Power down the
JetMachining Center
using approved tag and lockout procedures.
2.
Open the
cabinet lid
and remove the
front side cover
, enabling easy access to the
dump valve
:
Figure 4-82: Dump Valve Location in Pump
3.
Remove the Pump Front Cover to Access the
Dump Valve
Assembly.
Figure 4-83: Dump Valve and Associated Components
dump valve
dump valve assembly
dump valve
gland nut
high-pressure tubing
tee fitting
safety valve
port adapter
port adapter
gland nut
air hose
fitting
Summary of Contents for JetMachining Center 2626
Page 8: ...OMAX JetMachining Center Operator s Guide viii 400433D EN ...
Page 12: ...OMAX JetMachining Center Operator s Guide xii 400433D EN ...
Page 22: ...OMAX JetMachining Center Operator s Guide Safety First 1 10 400433D EN ...
Page 140: ...OMAX JetMachining Center Operator s Guide OMAX Glossary 6 16 400433D EN ...
Page 144: ...OMAX JetMachining Center Operator s Guide Index 4 400433D EN ...