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6. Maintenance
Adhering to the installation instructions is the most important requirement to ensure that
your Oval Gear meter provides the maximum level of operational performance. Oval Gear
meters are a mechanical device, and so will be subject to some wear and tear over their
operational life, except under ideal circumstances. The amount of normal wear that the
meter will experience will be very dependent on the operational conditions such as; flow
rate, temperature, cleanliness of the liquid, lubricity of the liquid, and the amount of
continuous duty required of the meter.
In order to maximise the operational availability of your meter, and reduce system
downtime, a periodic maintenance and inspection regime should be used. Frequency of
maintenance depends on the operational conditions of the meter and the criticality of the
system; it is the user’s responsibility to determine inspection frequency however the
manufacturer can provide guidance.
For any installations that require in-situ cleaning (CIP); it is important that the cleaning or
flushing procedures do not produce operating conditions that are outside of the acceptable
flow rate, pressure, or temperature ratings of the meter. Chemical compatibility of cleaning
solutions should be checked against the materials of construction of the meter.
Before undertaking meter maintenance ensure the following:
Associated alarm(s) or control output(s) are isolated so not to affect the process
Voltage supply is isolated from the meter
Liquid supply to the meter is closed off
The meter is depressurised and liquid drained from the meter / pipeline
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