HyPrecision 50S/60S/75S Operator Manual 808690 87
5 – Preventive maintenance
Preventive maintenance
17 . Turn ON the pump in cooling mode. Let it run for 15 to 20 minutes.
Monitor for leaks. Identify the source of a leak and correct the problem. Refer to
Leaks on page 163.
18. Add hydraulic fluid. Fill the tank 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 air enters the hydraulic system, the pump becomes noisy during operation. Refer to Noisy operation on
page 171.
WARNING
Do not attempt to repair a leak with pressure in the system.
WARNING
Use a piece of cardboard or other solid material to check for leaks when the pump is on. Do not
use hands, cloth, paper, or towels.
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