C-Tech ZHY-401B, Product Manual

Page: 18 / 22

- 16 -
and steel ring mould. It is best to clean the mould per shift. When cleaning, please take down
the press head and coat from the unit, and clean the mould carefully. Don’t use things with
corrosiveness to clean or sandpaper to polish.Use a little grease to spread on cylindrical
surface of press head and coat hole after cleaning so as to reduce the friction. You can use
dust collector to clean the inner space for installing press head after tearing down the mould.
Take carefully for mould installation to avoid damaging the mould.
VI. Fault Analysis
Troubles Reasons Solutions
Power LED is not on, or
LOGO has no display.
1.
Power fault.
2. Breaker fault.
3.
Fuse fault.
4.
Transformer or
rectifier breakdown.
1.
Recheck power.
2.
Replace breaker.
3.
Replace fuse after fixing the
problem.
4.
Replace transformer or rectifier.
During holding pressure period,
the oil pump frequentlystarts.
1.
The one-way alve
is contaminated.
2.
Upward solenoid valve fault.
3.
Cylinder piston seal fault.
1.
Replace one way valve.
2.
Replace solenoid valve.
3.
Replace cylinder piston seal.
The pressure cannot keep in
place and up to the max.
1.
Pressure sensor fault.
2.
Line fault.
1.
Replace the pressure sensor.
2.
Troubleshoot line fault.
The pressure cannot reach
pre-set value. (The oil pump is
running, but the sound is not
loud)
1. The overflow valve is too low.
2.
Overflow valve fault.
3.
Oil leakage.
4. Upward or downward
solenoid valve fault.
1. Readjust overflow valve.
2.
Replace overflow valve.
3.
Check oil tube and nut.
4. Replace upward or downward
solenoid valve.
No pressure or the pressure
rises too slowly, or the oil
pump sound is loud.
1.
The throttle valve is closed.
2.
Overflow valve fault.
3.
Oil pump fault.
1.
Open throttle valve.
2.
Replace overflow valve.
3.
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.