SMC Networks IR2000-A Series, Operation Manual

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7
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Troubleshooting
No. Problem Possible causes Countermeasures
1 Reduction of the set pressure
Fluctuation of flow rate at the downstream side
Set the pressure again.
Return the flow rate at the downstream side to the initial rate.
Moisture, condensate and foreign matter stuck to the
flapper.
Install a filter and/or mist separator to clean the air supply.
Leakage due to deterioration of the
rubber part.
Ozone Use the ozone resistant product (80- series).
Temperature Avoid using at high temperature or low temperature.
Organic solvent
etc. Take countermeasures to prevent organic solvent from the ambient
atmosphere or fluid.
High frequency ON-OFF operation on the downstream
side.
Set the pressure again.
Pressure in the bonnet is reduced.
Release the pressure in the bonnet which is the reference pressure to
the atmosphere.
2
The set pressure increases or
decreases as time passes.
Aging deterioration of the regulator Set the pressure again.
3 Slow response
Moisture, condensate and foreign matter stuck to
the nozzle and flapper.
Install a filter or mist separator to clean the air supply.
Increase in the flow rate consumption on the
downstream side (such as leakage).
Prevent the leakage from the piping.
4
Increased leakage from the
bonnet breathing hole and
exhaust port
Leakage due to deterioration of
the rubber part.
Ozone Use the ozone resistant product (80- series).
Temperature Avoid using at high temperature or low temperature.
Organic solvent
etc. Take countermeasures to prevent organic solvent from the ambient
atmosphere or fluid.
Foreign matter caught in the seat
Install a filter or mist separator to clean the air supply.
Perform flushing by releasing the downstream side to atmosphere.
5
The set pressure changes
periodically. Supply pressure fluctuates. Install the regulator on the front to reduce the fluctuation.
Ambient temperature and fluid temperature change Take countermeasures to prevent temperature changes.
6 Pressure does not increase. Insufficient min. supply pressure Increase the supply pressure.
7 Repeatability accuracy is bad.
Due to problem 1. Refer to problem 1.
Due to problem 2. Refer to problem 2.
8 Oscillation occurs.
Leakage from the downstream side. Prevent the leakage from the piping.
Downstream piping condition
Oscillation occurs depending on the condition. In that case, please
contact your SMC sales representative.
9
There is leakage from the
ports other than the bonnet
breathing hole and exhaust
port.
Leakage due to deterioration of the rubber part. Consult SMC.
※ If any of the troubleshooting is not applicable, please contact your SMC sales representative.
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