Aalborg DPC, Operating Manual

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10. TROUBLESHOOTING 10. TROUBLESHOOTING
10.1 Common Conditions 10.1 Common Conditions
Your DPC Mass Flow Controller was thoroughly checked at numerous quality control points
during and after manufacturing and assembly operations. It was calibrated according to your
desired fl ow and pressure conditions for a given gas or mixture of gases.
It was carefully packed to prevent damage during shipment. Should you feel that the instru-
ment is not functioning properly, please check fi rst for these common conditions:

Are all cables connected correctly?

Are there any leaks in the installation?

Is the power supply correctly selected according to requirements?

When several controllers are used, a power supply with appropriate current rating
should be selected.

Were the connector pinouts matched properly?

When interchanging with other manufacturers’ equipment, cables and connectors
must be carefully wired for correct pin confi gurations. Check these.

Is the pressure differential across the instrument suffi cient?
Also check the Troubleshooting Guide provided in Section 10.2.