SMC Networks PF2W7 Series Operation Manual page 35

Fault
Wiring failure.
There is no output.
Connector loose.
Foreign matter inside.
Piping is connected in the wrong
direction.
Insufficient fluid supply.
Output is unstable.
Pulsation in the flow.
Liquid leakage.
Hysteresis is too narrow.
The buttons cannot be
Key-lock mode is activated.
operated.
Probable cause
Correct the wiring.
Check the connector.
Set up filter (approx.40 mesh) at IN side of product.
If there is foreign matter stuck to the mesh, remove it
completely, taking care not to damage the product.
Install with the mounting direction corresponding to
the flow direction (arrow indicated on the product).
Full up the fluid path.
Change to a pump that has less pulsation. Install a
tank to reduce the pressure fluctuation. Change the
piping to elastic piping such as rubber tube.
Check that seal tape has been applied correctly.
Reconnect the pipes with the specified tightening
torque.
Increase the hysteresis.
Cancel the Key-lock function (page 31).
-34-
Recommended action
No.PF※※-OMO0012-D