Troubleshooting a Finish Thompson Diaphragm Pump in GA

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Category : Technology

Air-operated double-diaphragm pumps (AODD) are preferred in transfer applications because their simple design makes them easy to operate and cost-effective to repair. To achieve top performance, end users must install and operate these pumps correctly. In a matter of minutes, common issues can be corrected with the right information.  Today we’re discussing some troubleshooting options for the Finish Thompson diaphragm pump in GA.

Here are six quick steps that can help you fix common problems during installation and operation.

Check the inlet air line size and pressure. Installing an airline that is too small is the most common mistake users make when installing an AODD pump. Using an airline that is too small will starve the pump of the fuel (compressed air) it needs to operate at peak performance. Upgrading to a larger airline is an easy fix that takes a few minutes.

Inspect for muffler icing and restrictions. Diaphragm pumps can generate high decibels at full speed, which is the main reason muffler is recommended during installation. The air motor of the Finish Thompson diaphragm pump in GA requires compressed air to operate.

As the compressed air enters the air valve and channels through the pump center section to exhaust through the muffler, rapid temperature changes occur. Erratic pump operation, inlet air with high levels of moisture or visible frost on the outside of the muffler are indications of an icing-related issue that is decreasing pump efficiency.

Inspect sealing surfaces for leakage. Leakage is a common problem in all pump types. A few simple fixes can ensure the fluid stays in an AODD pump. First, pumps – especially plastic pumps – must be torqued to the manufacturer’s recommended rating.

Materials relax over time, which can cause sealing surfaces to loosen and create leak paths. Refer to the pump manual for torque values, and follow the bolting patterns to reduce the threat of leakage.

Ensure proper tubing and piping size. Pump inlet and outlet fluid port diameters vary based on the flow rate required. Inlet and outlet hose sizes must match the pump’s size. A primary concern is the risk of cavitation, which can increase repairs and maintenance costs.

Changing tubing and piping size after installation is relatively fast. Knowing the correct size at installation eliminates the time and effort required to make a modification later.

Slow the pump down to prime. The Finish Thompson diaphragm pump in GA is popular when self-priming is required. If air pressure supplied to the pump is too high, the pump will change over too quickly and there will not be enough time for the fluid to be drawn into the pump.

 To solve this priming issue in a matter of seconds, slow down the pump by using the air regulator to decrease the air pressure entering the air valve. Once the pump speed has been reduced and the fluid has had enough time to enter the pump, increase the air pressure and operate the pump at a faster speed.

Clear any fluid line restrictions. Certain restrictions create backpressure that may negatively affect the pump and potentially create cavitation that will increase maintenance. Take a minute to inspect the pump and connected piping to ensure there are no visible restrictions.

Spending a few minutes up front to ensure proper installation will save a tremendous amount of time correcting problems later. Following these steps can help end, users spend less time trying to figure out problems with their Finish Thompson diaphragm pump in GA.

Companies with smooth operations and processes that are operating to specification – and with minimal downtime – will be successful!  We will help you create this transformation through superior technical consultation, installation, and support.  Call us today at (404) 647-0986 to find out how we can help you with your applications.


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