Hypertherm HyPrecision 15, Operator'S Manual

Page: 97 / 194

HyPrecision15/30/50 Operator Manual 808240 97
5 – Preventive maintenance
Preventive maintenance
7. Clean the inside of the tank with a lint-free towel and isopropyl alcohol. Make sure that no debris remains on

the bottom.
8. Install new suction strainers.

The suction strainer should be hand tightened and then turned 90° more.
9. Reconnect the hydraulic hoses.

Refer to the fittings torque tables on page 173.
10. Close the drain valve.
11. Install the original drain valve plug.
12. Replace the access cover on the tank. Torque the nut to 27 N ∙ m (20 lbf ∙ ft).
13. Remove and discard the used filler-breather cap.
14. Fill the tank with hydraulic fluid. Make sure that the hydraulic fluid level is at the top mark on the sight gauge.
15. Install the new filler-breather cap.
16. Turn ON the pump in cooling mode. Let it run for 15 to 20 minutes.
17. Look for leaks. If a leak is found, identify the source and repair the problem. Refer to the Troubleshooting section,
which begins on page 153.
18. As the hydraulic fluid circulates through the system, it could be necessary to add fluid. Fill the tank with hydraulic fluid
until the fluid is at the top mark on the sight gauge.
Repeat this process as needed.
19. Run the pump in pierce-pressure mode for 15 to 20 minutes.
If the pump is noisy, there could be air in the hydraulic fluid. Refer to the Troubleshooting section, which begins on
page 153.
CAUTION
Make sure that all towels are removed from the tank before it is filled.
Do not use soap, detergent, or solvents.
Do not overfill the hydraulic fluid tank.