C28 Raritan toilet not getting raw water

[tatoweb]

Hi all,

The toilet motor works, but no raw water comes in. What could be the cause?


Sent from my iPhone using Tapatalk

 

[Admiral S]

Is the seacock open to allow the raw water to be pumped into the toilet? If you let us know what boat you have we can tell you where it should be located.

 

[dandcwestbrook]

Have the same issue on my 2015 R27. Verifying open raw water seacock was the first thing I checked. Still no flow to toilet bowl rim. Interested to hear if you find a solution.

 

[tatoweb]

Is the seacock open to allow the raw water to be pumped into the toilet? If you let us know what boat you have we can tell you where it should be located.

I have a 2016 Cutwater 28. Seacock is open


Sent from my iPhone using Tapatalk

 

[Andrew Custis]

I try to always start at the beginning of the system. I see that some have suggested checking the seacock which is certainly towards the beginning of where I would start but I would go further into this.

1. Once you have verified the seacock is open, I would close it back up, remove the strainer for the head system and check for debris. Make sure this is cleaned.

2. Once you verify this is clean, I would open the seacock with the lid off and verify water flow. Quickly open the seacock and see if water comes out. If it doesn't come out of the strainer, this could mean that you have a blockage on the bottom side of the boat and needs to be cleaned. Many times I will use compressed air or water to try and back flush it to see if I can start to get water. In some cases and depending on the strainer used, it could also be that it is mounted slightly above water line so this wouldn't have water come out. In any event, make sure this is not blocked.

3. Once you verified number two is done, I would check the line leading from the strainer to the toilet and make sure there is no restriction here. You could remove it at the toilet side and blow air or force water from the strainer up to see if it comes out at the other end.

If all of this checks out ok, I would be looking at the Raritan pump and components directly. The model we use is called the Sea Era and their customer service has always been great for me in the past.

 

[tatoweb]

I try to always start at the beginning of the system. I see that some have suggested checking the seacock which is certainly towards the beginning of where I would start but I would go further into this.

1. Once you have verified the seacock is open, I would close it back up, remove the strainer for the head system and check for debris. Make sure this is cleaned.

2. Once you verify this is clean, I would open the seacock with the lid off and verify water flow. Quickly open the seacock and see if water comes out. If it doesn't come out of the strainer, this could mean that you have a blockage on the bottom side of the boat and needs to be cleaned. Many times I will use compressed air or water to try and back flush it to see if I can start to get water. In some cases and depending on the strainer used, it could also be that it is mounted slightly above water line so this wouldn't have water come out. In any event, make sure this is not blocked.

3. Once you verified number two is done, I would check the line leading from the strainer to the toilet and make sure there is no restriction here. You could remove it at the toilet side and blow air or force water from the strainer up to see if it comes out at the other end.

If all of this checks out ok, I would be looking at the Raritan pump and components directly. The model we use is called the Sea Era and their customer service has always been great for me in the past.

Andrew,

Where is the strainer for the head?


Sent from my iPhone using Tapatalk

 

[dandcwestbrook]

I was able to restore raw water flow to our R27's Raritan toilet by retrying a method learned during our orientation. It appears that the raw water pump at the base of the toilet either dries out or loses it's prime if the toilet is not used often enough. We were told to fill the bowl with water up to the rim and then push the flush button. -you can use either fresh water from the head sink or raw water from the cockpit wash down hose (I found the wash down hose works better since it has higher flow to fill the bowl up and I’m not “wasting” fresh water). Afterward the pump on the toilet should start working on its own. It took me a couple of tries before I finally got it to start pumping raw water on its own. Although we don’t use our toilet very much, I will probably start flushing it briefly more often now. Hope this works for you.

 

[tatoweb]

I was able to restore raw water flow to our R27's Raritan toilet by retrying a method learned during our orientation. It appears that the raw water pump at the base of the toilet either dries out or loses it's prime if the toilet is not used often enough. We were told to fill the bowl with water up to the rim and then push the flush button. -you can use either fresh water from the head sink or raw water from the cockpit wash down hose (I found the wash down hose works better since it has higher flow to fill the bowl up and I’m not “wasting” fresh water). Afterward the pump on the toilet should start working on its own. It took me a couple of tries before I finally got it to start pumping raw water on its own. Although we don’t use our toilet very much, I will probably start flushing it briefly more often now. Hope this works for you.

Thanks for the info. I’ll try the same.


Sent from my iPhone using Tapatalk

 

[stwendl]

I wonder if there should be a check valve in the raw water line to head supply. I would imagine the engine or gravity might empty the prime.

 

[BB marine]

I wonder if there should be a check valve in the raw water line to head supply. I would imagine the engine or gravity might empty the prime.

There is a check valve on our boat about a foot from the Engine/wash down/head sea strainer. When we had a raw water flush it would take a while to get the head pump to pick up prime after a long cruise. The water from the bowl would empty out because of the boat running bow high and the head located in the forward section of the boat. The waste would flow out of the waste hose to the tank and it seemed to syphon the water from the bowl. If I held the head flush button for a while it would eventually pickup prime again. It was quicker to use the sink/shower faucet head and fill the bowl with fresh water and it would pick up prime right away. I removed the head pump and converted to a fresh water flush .It is much quieter, instant water in the bowl and helps eliminate waste tank odors.