The journey of commonly asked questions about BaseVac systems is coming to an end. We have two more segments left of the “After 5 Years” section of this series. Last week we covered a running motor without suction and concerns about a loud motor. Today, we will be continuing this journey by looking at intermittent vacuum: the common causes and simple fixes we may have to suggest.
The suction is intermittent
· This is normally indicating a piping system blockage. Debris moves around, blocking flow intermittently.
· The wave scenario may also be associated with the draining of the air/water separator (AWS). When full, the flow switch within the AWS tank will shut the system off for 3.5 minutes while the tank drains. Depending on the piping system, there may be minimal suction during this time. This process is a protection mechanism to prevent water from entering into the motors. If the tank is regularly filling, there may be a clog preventing proper draining of the ASW or you may need to upgrade the tank with a BaseVac tank extender.
· This scenario may also occur in high vertical lift piping systems. To correct the wave action, increase the vacuum to a higher level on the built-in valve.
· Additionally, check the AWS drain to check the valve to ensure it is not blocked open with debris
· The inline inlet check valve may have stuck partially closed, restricting the airflow.
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Next week we continue the last release of our series on common questions, answers, and troubleshooting with BaseVac Dental Dry-vacuum systems. We will continue the “After five years” segment of this series by reviewing concerns about an overheating system and weak vacuum suction.
To review what we covered thus far, click here to be taken back to the first release of this series.