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Old 15-11-2014, 06:17   #1
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Holding Tank Gauge

After a recent voyage and some rough seas, our holding tank level gauge is stuck. The tank level gauge is a WEMA SHS Holding Tank Level Sensor. Does anyone have experience with this problem? Thank you
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Old 15-11-2014, 06:54   #2
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re: Holding Tank Gauge

Perhaps the screen is clogged.
The SHS sender incorporates a removable screen cage that allows cleaning. A single circlip holds the screen in place, which can be removed and flushed of any solids.
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Old 15-11-2014, 09:32   #3
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re: Holding Tank Gauge

Thank you for your reply. Can you please detail how to access the screen. I sure don't want to go any further into the holding tank than necessary.
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Old 16-11-2014, 06:51   #4
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Re: Holding Tank Gauge

Give the holding tank a thwack! or two with a rubber mallet. We have the same sensor, and sometimes that's all it takes. If you happen to have enough effluent in the tank already so the float will move, you'll usually be able to tell right away whether that worked or not.

Otherwise, cleaning in our case would mean removing it from the tank for a few minutes. Not difficult. Less unpalatable if preceded by two or three good pump-out/flush sequences.

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Old 16-11-2014, 07:42   #5
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Re: Holding Tank Gauge

On my Sealand Vacuflush system, there is a tank sensor w/ three floats that trip magnetic switches. Sometimes these can get stuck.

My maintenance process is to periodically pump out the tank, remove the switch assembly, the pump assembly, then scrub the tank interior, clean the switches, disassemble and clean the pump.

This maintenance helps keep everything flowing smoothly.
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