1

Actions failure

1.Wrong or loose electric

wiring

2.Pressure of control oil

tank not sufficient

3.Insufficient oil in oil

tank.

1.Check the wire

connecting

2.Regulate the pressure to

1.5Mpa

3.Add oil to the required

level

2

Slide creeping

1.There is air in the

hydraulic system or the

suction port of the oil

pump sucks air .

2.The accuracy is not fit

or the vertical column is

lack of lubricate oil.

1.Check the suck pipe of

the pump and make the

slide move up and down

several times then

pressurized.

2.Readjust the accuracy

and fill the lubricate oil to

vertical columns

3

When the slide moves down slowly, upper chamber of the main cylinder have pressure

Over high support pressure

Adjust the counterbalance valve to make upper chamber of the main cylinder pressure free, the pressure should be less than 1MPa.

4

Machine stop but slide keep downing

1. Cylinder leaking

2. Pressure value leaking

1. Change seal when cylinder leaking

2. Adjust value pressure

5

Pressure gauge pointer swing

1. Air in pressure gauge

2. Pipe mechanical shocking

3. Press gauge broke

1. Release air in pressure gauge

2. Fixed pipe

3. Change one new press gauge