Troubles

Reasons

Solutions

Power LED is not on, or

LOGO has no display.

1.Power failure.

2.Breaker failure.

3.Fuse failure.

4.Transformer or rectifier

breakdown.

1.Recheck power.

2.Replace breaker.

3.Replace fuse after the fixing

the problem.

4.Replace transformer or

rectifier

During holding pressure

period, the oil pump

frequently starts.

1.The one-way valve is

contaminated.

2.Oil leak in one-way valve.

3.Upward solenoid valve failure.

4.Cylinder piston seal failure.

1.Clean the one-way valve.

2.Replace one way valve.

3.Replace solenoid valve.

4.Replace cylinder piston seal.

Loss of maximum pressure

1.Electrical contact pressure

gauge failure.

2.Electrical contact pressure

gauge plug or lead wire is broken.

1.Replace electrical contact

pressure gauge

2.Connect plug or lead wire

The pressure cannot

reach pre-set value (the

oil pump is running, but

the sound is not loud.)

1.The overflow valve a too is low.

2.Overflow valve failure.

3.Oil leakage.

1.Readjust overflow valve.

2.Replace overflow valve.

3.Check oil tube and nut.

No pressure or the

pressure rises too

slowly, or the oil pump

sound is loud.

1.The throttle valve is closed.

2.Oil pump failure.

1.Open throttle valve.

2.Replace oil pump.

The cylinder is not

moving properly

1.The cylinder cavity has too much

air in it.

2.In the hydraulic fluid has air

in it.

1.Cylinder is worn out from use.

2.Hydraulic fluid is low, refill

hydraulic fluid.

3.Check leakage in the pump

intake pipe.

The breaker is ON and

the pump runs

immediately or the pump

has an unusual sound or

smell.

SSR failure

Turn breaker OFF and check the

power supply, then replace the

SSR, check oil pump.