Cleaning the GD40 Detector

Factory Recommended Method

Use only 99% Isopropyl alcohol.

Alcohol that is less than 99% will take longer to dry. Sometimes much longer. Denatured Alcohol is not 99% and should not be used.

• Clean with 99%  isopropyl alcohol. Pour alcohol for five minutes.
• Blow out with Clean & Filtered instrument air, until completely DRY. (Usually requires 12 hours at 1 l/min.)

 

Better Method

• Plug the outlet.
• Fill the analyzer with 99%  isopropyl alcohol. Tap gently to allow bubbles to escape.
• Drain and repeat until alcohol comes out clean, then at least 2 more times.
• Blow out with Clean & Filtered instrument air, until completely DRY.
• Usually requires 12 hours at 1 l/min

Best Method

• Remove detector from panel.
• Remove the outlet fitting and replace with a pipe plug
• Fill detector half full with 99% isopropyl alcohol.
• Plug inlet fitting
• Shake
• Drain and repeat until alcohol comes out clean, then at least 2 more times.
• Blow out with Clean & Filtered instrument air, until completely DRY. (Usually this requires 12 hours at 1 L/min.)

 

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