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Old 07-09-2018, 05:03 PM   #1
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Default Shower drain 99 scr 3000

Been looking around, currently every week since shes been on the water she has a bit of water that backs up throw the shower drain.

The toilet was fixed before we purchased and I'm curious if anything there could be the issue or if its common to have water back up.

I'll snap some pictures and post soon. The red pump switch turns on and drains it out but water comes back in shortly thereafter.
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Old 07-09-2018, 10:09 PM   #2
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Shower and toilet have nothing in common.

Are you running the AC? If so the condensate line may be routed to the shower sump and filling it? If you leave the red switch on does the sump drain? There should be a float in the sump to turn the pump on and off as it fills but the red switch must be on.
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Old 07-10-2018, 11:30 AM   #3
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No sumps in the 3000.. The drain is directly plumbed to the discharge pump.
It could be just the back flow from the water remaining in the line once the pump is off and works its way back past the pump.

Crappy design to begin with and it places the pump (similar type as the fresh water) down low in the bilge.
I've replaced the whole thing with a custom sump box with a standard bilge pump. It cycles frequently during a shower due to how small the box has to be to fit the space, but it does the job and any backflow just stays in the sump.

John
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Old 07-18-2018, 04:35 PM   #4
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My pump just went out on the shower, does anyone know what the pump is specifically or can I just exchange it with any 12v marine pump??
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Old 07-18-2018, 04:37 PM   #5
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No sumps in the 3000.. The drain is directly plumbed to the discharge pump.
It could be just the back flow from the water remaining in the line once the pump is off and works its way back past the pump.

Crappy design to begin with and it places the pump (similar type as the fresh water) down low in the bilge.
I've replaced the whole thing with a custom sump box with a standard bilge pump. It cycles frequently during a shower due to how small the box has to be to fit the space, but it does the job and any backflow just stays in the sump.

John


Absolutely a crappy design, like you said backflow. I cleaned the screen and it worked like a charm. Since no backflow.
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Old 07-18-2018, 04:46 PM   #6
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Cant you just put in a backflow preventer/check valve and it would stop the back flow problem?
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Old 08-18-2018, 11:16 PM   #7
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I have an issue with my 1998 3000 SCR shower drain pump. It doesn’t seem to turn on when theres water in the drain. The shower pump is on and will pump water but the drain backs up. I’ve cleaned the strainer but the pump never fires. I’ve checked all fuses and looked underneath for an in-line fuse. Any advice?
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Old 08-18-2018, 11:26 PM   #8
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I have an issue with my 1998 3000 SCR shower drain pump. It doesnít seem to turn on when theres water in the drain. The shower pump is on and will pump water but the drain backs up. Iíve cleaned the strainer but the pump never fires. Iíve checked all fuses and looked underneath for an in-line fuse. Any advice?
I would start by verify power is at the pump when the switch is on. Then power is getting to the switch. Fuse should be at the helm, maybe in an access panel under it.
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Old 08-19-2018, 12:39 AM   #9
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By switch are you referring to the shower pump? Isn’t that for the water feed? Because I’m getting water from the faucet.
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Old 08-19-2018, 02:00 AM   #10
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By switch are you referring to the shower pump? Isnít that for the water feed? Because Iím getting water from the faucet.
No, the shower sump pump switch should be in the head. The switch at the galley only runs the water pump for the faucets.
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