6 วิธีในการแก้ไขจัดการปัญหาที่เกิดขึ้นกับ ไดอะแฟรมปั๊ม by Michael Sandlin (ตอนที่2)

2. Inspect for muffler icing and restrictions.

Diaphragm pumps can generate high decibels at full speed, a main reason mufflers are recommended during installation. The AODD air motor 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. At the muffler exhaust, air temperature is below freezing and can cause icing-related issues that are common in humid environments.

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. Here are suggested solutions to eliminate these issues:

• Decrease the air pressure to the pump.
• Increase the pump size to operate at lower speeds (i.e. lower air pressure).
• Exhaust air to a remote location using an exhaust port tube.
• Add an air line filter with a water catcher and drain to collect condensation.
• Install an air line heater to raise the exhaust air temperature above freezing.
• Adjust the pressure dew point temperature with an air compressor dryer.

Solutions to icing can range in difficulty depending on the application and environment, but reducing the air pressure to the pump is one of the quickest and most effective ways to reduce icing

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Credit by Michael Sandlin

https://www.pumpsandsystems.com/pumps/october-2016-5-minute-fix-troubleshoot-diaphragm-pump