Flush The Pump And The High-Pressure Tubing - Hypertherm HyPrecision Predictive P-15 Operator's Manual

9 – Installation

Flush the pump and the high-pressure tubing

It is common for small pieces of metal and debris to be present in newly installed high-pressure tubing. Flush the
system to prevent damage to orifices, on/off valve parts, and other parts of the high-pressure system.
This procedure can cause damage to the on/off valve seals parts and orifices. Keep spare kits
and orifices available.
Debris can cause damage to the on/off valve needle and the seat.
If this pump was purchased through an OEM, the OEM could recommend a different procedure to
flush out the high-pressure tubing.

This procedure identifies 1 method to flush out the high-pressure tubing. If this pump was purchased through
an OEM, the OEM might recommend a different procedure.

This procedure can cause damage to the on/off valve sealing parts and orifices. Keep spare kits and orifices
available.
1. Remove the cutting head and the orifice.
2. Make sure that the on/off valve is closed.
3. Turn the pump.
ON
4. Set the pressure to 1,380 bar (20,000 psi).
5. Start the pump.
6. Make a program that turns the valve on and off in 1-second increments. Operate the program in a loop for 15
minutes.
If a program is not available, turn the cutting head on and off in 1-second intervals for 15 minutes. This
loosens debris in the high-pressure tubing.
7. Turn the pump.
OFF
8. Install a ruby orifice in the cutting head. For orifice sizes, refer to the
page 186.
9. Turn the pump.
ON
10. Touch the R symbol.
UN
11. Increase the pressure to 2,760 bar (40,000 psi). Operate the program in a loop for 15 minutes.
12. Increase the pressure to 4,140 bar (60,000 psi). Operate the program in a loop for 15 minutes.
If the on/off valve leaks, examine the needle, the seat, the seals, and the orifices for damage. Replace these
parts, if necessary.
HyPrecision Predictive waterjet pump Operator Manual 810120
section, which begins on
Orifices
215