78 HyPrecision Predictive waterjet pump Operator Manual 810120
5 – Preventive maintenance
Preventive maintenance
Examine the pump for leaks or damage
Do this task when the pump is running and the system is pressurized.
1. Look for hydraulic fluid leaks. Monitor these areas:
Hydraulic fluid tank access cover
Hydraulic connections
Valves
Top and bottom pump decks
2. Examine the low-pressure tubes and the hoses for leaks.
3. Examine the bleed-down valve for leaks or damage.
4. Examine the weep holes in the high-pressure ends for leaks. Water leaking from a weep hole is a sign of a
faulty part or a loose connection.
The SMI monitors the rate of drops from the static seal and the dynamic seal.
5. Examine the high-pressure tubing for leaks.
6. Look for deterioration, damage, or other conditions that can interfere with operation.
Do this every work shift.
1
Output adapter leak
2
High-pressure seat leak
3
Static seal leak
4
Dynamic seal leak