SMC Networks PF2W7 Series, Operation Manual

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-33-
No.PF
※※
-OMO0012-D
Troubleshooting
Troubleshooting
If an operation failure occurs with the product, use the table below to find out the cause of the problem.
If none of the countermeasures seem to be applicable, or a replacement product operates normally when
installed, the product may be faulty. A product can be damaged by the operating environment (system
configuration etc). If the product seems to be faulty, please contact SMC.
■
Cross-reference for troubleshooting
Fault Probable cause Recommended action
Dis
p
la
y
Display is OFF.
Wiring failure. Correct the wiring.
Connector loose. Check the connector.
The display is
unstable.
Foreign matter inside.
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.
Piping is connected in the wrong
direction. Install with the mounting direction corresponding to
the flow direction (arrow indicated on the product).
Insufficient fluid supply. Full up the fluid path.
Pulsation in the flow.
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.
Liquid leakage.
Check that seal tape has been applied correctly.
Reconnect the pipes with the specified tightening
torque.
The display is not
correct.
Foreign matter inside.
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.
Piping is connected in the wrong
direction. Install with the mounting direction corresponding to
the flow direction (arrow indicated on the product).
Insufficient fluid supply. Full up the fluid path.
An incorrect flow unit was
selected.

Select the appropriate flow unit.
Liquid leakage.
Check that seal tape has been applied correctly.
Reconnect the pipes with the specified tightening
torque.

: Operate only the product with unit selection function