Fault description Cause Remedy
Delivered pulse rate too low Flow rate too high
Use suitable OGM size
Incorrect pulse value
Determine pulse value and reprogram if
necessary
Delivered pulse rate fluctuating Air bubbles in the metering medium
Bleed metering system
OGM not sufficiently aerated
Check OGM for trapped air bubbles and
completely bleed metering system
Troubleshooting
93 MAN046590 Rev. 6-03.2022
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