Hypertherm DynaMAX 550P, Operator'S Manual

Page: 83 / 224

Preventive maintenance
4
DynaMAX 550P/560P/575P Waterjet Pump Operator Manual 811390 83
7. Clean the inner surfaces of the tank with towels and isopropyl alcohol. Make sure that no debris
is left in the bottom of the tank.
8. Install new suction strainers.
9. Tighten the suction strainer by hand and then turn it 90° more.
10. Close the drain valve.
11. Install a drain valve plug.
12. Install a new crush washer and bolt.
13. Install a new access cover gasket.
14. Replace the access cover on the tank. Torque the nut to 27 N∙m (20 lbf∙ft). Refer to Hydraulic
fluid tank access cover on page 180
15. Remove the used filler-breather cap.
16. Fill the tank with hydraulic fluid until the fluid is at the top mark on the sight gauge.
17. Install a new filler-breather cap.
18. Discard the used parts.
19. Turn
ON
the pump in cooling mode. Let it operate for 15 to 20 minutes.
20. Monitor for leaks.
21. Add hydraulic fluid, if necessary. Refer to Add hydraulic fluid on page 79.
22. Operate the pump in pierce-pressure mode for 15 to 20 minutes.
If air is in the hydraulic system, the pump can be noisy during operation. Refer to The pump makes
noise during operation on page 168.
CAUTION
Remove all towels from the tank before putting hydraulic fluid in it.
Do not use soap, detergent, or solvents.