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Old 10-11-2018, 07:56 AM   #1
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Washing mach- remove sewer cap?

Whats this mean? Does everyone do this?

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Old 10-11-2018, 08:02 AM   #2
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It's my understanding that some RV's are plumbed so the washer doesn't drain into the gray tank but, rather, into the drain line after the tank. This means that you must remove the sewer cap so water can flow away.

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Old 10-11-2018, 08:04 AM   #3
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The tank could overflow and back up into the RV.
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Old 10-11-2018, 09:00 AM   #4
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The two Iíve had are plumbed directly to the grey tank .. I can see the pipe. Since the grey tank is vented to the roof there is no pressure issues and the low point in the plumbing is the shower.... personal exp . We run ours all the time with the grey tank closed, to get enough water to flush the black tank with no issues ( other than the overflow into the shower pan if you forget) I think itís just cya for the maker since if you start a load with the tank full you could overflow the shower pan.
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Old 10-11-2018, 11:13 AM   #5
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Probably a precautionary label. Do you know to which tank your washer drains & how many gallons that tank holds?

I don't leave our dump valve open when doing laundry. If our grey is over 1/2 full, I'll dump before I do a load of laundry just so I don't overflow into the shower pan, then close the valve. If under 1/2, I can do a load without dumping first.

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Old 10-11-2018, 12:02 PM   #6
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The washing machine on my TS dumps into the gray tank and we have never had an issue with the tank drain being closed.
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Old 10-11-2018, 12:10 PM   #7
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CYA message and to ensure the user knows to have the grey valve open and sewer hose connected. But if you know how to manage your grey tank, optional.

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