Intensifier Problems; Intensifier Control; Stroking - Hypertherm HyPrecision Predictive P-15 Operator's Manual

7 – Troubleshooting

Intensifier problems

Intensifier control

If intensifier control is turned off, the primary screen shows an X on the intensifier symbol.
Refer to Intensifier Control on page 223.

Stroking

Overstroke
The motor's wattage and the size of the hydraulic pump determine the maximum intensifier stroke rate.
It is normal for the intensifier to stroke faster during the start sequence and when changing from low pressure to
high pressure. During normal operation, the intensifier should stroke smoothly to the left and right at the same
speed. An overstroke fault occurs when the hydraulic piston travels faster than the pump can sustain.
An overstroke alarm is caused by 3 conditions:
 Overstroking to the left (Fault 1: Intensifier 1 Overstroke to Left)
 Overstroking to the right (Fault 1: Intensifier 1 Overstroke to Right)
 Overstroking in both directions
If an overstroke alarm shows on the operator interface:
1.Turn the cutting head.
OFF
2. Acknowledge the alarm.
3. Put the pump in cut-pressure mode. The intensifier starts stroking.
4. Turn the cutting head.
ON
5. Monitor the intensifier stroke rate indicator on the operator interface.
The intensifier overstrokes in 1 direction
A poppet is sticking, worn, or damaged.
Overstroking to the left can be caused by:
 The low-pressure poppet on the left side of the intensifier has failed.
 The high-pressure poppet on the right side of the intensifier has failed.
Overstroking to the right can be caused by:

The low-pressure poppet on the right side of the intensifier has failed.
 The high-pressure poppet on the left side of the intensifier has failed.
158 HyPrecision Predictive waterjet pump Operator Manual 810120