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Old 05-09-2019, 05:51 AM   #1
pm1pkr
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Where is the 2nd black tank valve?

I am the new owner of a 2014 Montana 305RL. The 'systems monitor' panel indicates 2 black and 2 grey tanks. However I can only find 3 valves - 2 grey and 1 black. Per the monitor one of the black tanks is full. How do I drain that?
Isn't there suppose to be 1 valve per tank?
Thanks
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Old 05-09-2019, 06:16 AM   #2
Bridge4d
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You only have 1 black tank on your model (1 toilet, 1 tank). Which "System Monitor" do you have? The In-Command system? If so you need to go into system settings and disable the second tank.
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Old 05-09-2019, 08:06 AM   #3
pm1pkr
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Label on it says KIB - not a computer 'monitor' - just a panel with switches/buttons that you can press to show how full tanks are and battery power ETC.
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Old 05-09-2019, 08:16 AM   #4
jsb5717
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I have the same in my 2018. I'm not sure why there are 2 black tanks showing on that panel except that it's probably a panel used in multiple models.

That said, you have only one black tank so one of the level guages is moot.
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Old 05-09-2019, 08:52 AM   #5
pm1pkr
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thanks
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Old 05-09-2019, 10:56 AM   #6
suny07
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Confirm as well - only 1 black tank
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Old 05-09-2019, 11:02 AM   #7
BuilderBob
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Quote:
Originally Posted by pm1pkr View Post
I am the new owner of a 2014 Montana 305RL. The 'systems monitor' panel indicates 2 black and 2 grey tanks. However I can only find 3 valves - 2 grey and 1 black. Per the monitor one of the black tanks is full. How do I drain that?
Isn't there suppose to be 1 valve per tank?
Thanks
You only have (1) black tank they use the same panel in more than one model of Montana. Some have a second bathroom in the back so it would need a second black tank.
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Old 05-09-2019, 09:01 PM   #8
dhuhn
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the Sensor on the black tank is probably gunk up and show full even when empty. The sensors are notorious for not working right.
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