Section 9
High Pressure Water System
20412997
8-2012/Rev 12
9-4
When a machine is equipped with redundant intensifiers, operation can continue on
the secondary unit if the primary unit requires maintenance. However,
maintenance must not be performed while the machine is in operation.
Maintenance must never be performed on any high pressure components while the
machine is operating. All pressure must be relieved or blocked from the hydraulic
and high pressure circuits and the electrical panel must be locked out before
performing maintenance.
The following example describes the procedure for changing from one intensifier to the other. In
this example, intensifier 2 will become the active intensifier and intensifier 1 will become
inactive.
1. Turn the machine off and make sure the emergency stop button is depressed.
2. Turn the cutting water supply off.
3. Disconnect the low pressure water supply lines from intensifier 1 and connect them to
intensifier 2.
4. Remove the side cover to gain access to the hydraulic hand valves and close the two
hydraulic shutoff valves to intensifier 1.
5. Close the high pressure water shutoff valve to intensifier 1.
6. Open the two hydraulic shutoff valves, and the high pressure water shutoff valve to
intensifier 2.
7. Select intensifier 2 from the Run Screen on the control display.
8. Turn the cutting water supply on and ensure all cooling water, water supply and cutting
water valves are open.
9. Ensure all hydraulic and high pressure fittings, and the proximity switches are properly
tightened on intensifier 2.
10. Start the machine in low pressure mode and inspect the hydraulic, high pressure fittings,
valves and hoses for leaks.
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