All of them need to return to the work selection display:
5 Adjust, maintenance and eliminate faults on machine
5.1
Adjusting of system pressure
Note: adjusting work of system pressure done by hydraulic engineer.
5.1.1
System pressure is divided into the system pressure of high pressure
and the system pressure of low pressure, the adjusting of each of system
pressure is to be done by adjusting the pressure-regulating valve of relative
system. It has been done well before shipment, no touch in an ordinary
situation. Regulate value of system pressure of high pressure is 15MPa.
Regulate value of system pressure of low pressure is 2.5MPa.If need to adjust,
do it with reference to below figure.
Adjust system pressure
of high pressure
Adjust system pressure
of low pressure
Adjust discharge
5.1.2
Adjust system pressure of high pressure:
a. loose the jam nut of handle of pressure regulating valve;
b. turn the handle of regulating valve clockwise to increase pressure, turn
counter clockwise to reduce pressure;
c. be suspended for a moment on every adjustment of rising by 2 –3 MPa,
when pressure is stable, go on to adjust;
d. adjusting to 15 MPa then tightening the jam nut, adjusting is completed.
5.1.3
Adjust system pressure of low pressure: First adjust system pressure of
high pressure to 0, then in accordance with the above-mentioned steps to
adjust system pressure of low pressure to 2.5MPa.