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GREY TANK SENSORS ON BOURTON

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GREY TANK SENSORS ON BOURTON Empty GREY TANK SENSORS ON BOURTON

Post by WANDERING DAVE Wed Jul 03, 2024 5:28 pm

Hi does any one know the wiring on the sensors, there are five wire points, what are they for. Is there a wiring diagram any where.
Disconnected all five and the gauge shows empty, connect the bottom one and it shows a quarter even though the tank is empty,
I have cleaned the tank out with a tank cleaner but to me it seems that the sensors are still suspect.
how do you get the sensors out for cleaning.
The van is two years old, but nobody will work on it, I even took it to Willersey and they said clean it out with tank cleaner. I did and it is still the same.
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Post by PLOUGHLIN Wed Jul 03, 2024 6:33 pm

The 5 are 0%, 25%, 50% and 100% water filled. Once level drops below a sensor it says the level is the next one down. ie 74% gives 50% reading etc. They are held in place with a rubber sleeve which expands when nut on inside is tightened, not designed to be removed without dropping tank and accessing the inside.

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Post by WANDERING DAVE Wed Jul 03, 2024 6:56 pm

PLOUGHLIN wrote:The 5 are 0%, 25%, 50% and 100% water filled. Once level drops below a sensor it says the level is the next one down. ie 74% gives 50% reading etc. They are held in place with a rubber sleeve which expands when nut on inside is tightened, not designed to be removed without dropping tank and accessing the inside.
Hi PLOUGHLIN,
Thank you for replying, not a job for me to do. what is the fifth one.

am I replying correctly to your answer.
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Post by PLOUGHLIN Wed Jul 03, 2024 7:31 pm

WANDERING DAVE wrote:
Hi PLOUGHLIN,
Thank you for replying, not a job for me to do. what is the fifth one.

am I replying correctly to your answer.

I missed out 75%. snigger

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Post by Caraman Wed Jul 03, 2024 8:35 pm

Did your grey tank sensors work when the van was new?  If they did, its likely the inside of the tank was clean then but not now, or, there is an external short caused by damp connections - https://www.autosleeper-ownersforum.com/t44209-grey-tank-sensors-on-bourton?highlight=tank+sensors

I haven't noticed my sensors misbehaving for some time but that might be because I normally leave the grey drain tap open now with a bucket under it which I empty as required.  So I know when my tank is empty.  This is important in the winter if there is any chance of freezing.
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Post by Trevbo Sat Aug 03, 2024 7:43 am

All the sensor wires go back to a connector just unplug that one a 2 x connectors for the tank heater ( all underneath) drop the tank ( only 4 x 17mm nuts on my corinium you can remove them one by one and clean them up replacing each wire as you go it's not as big job as it sounds. Trevor 👍
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