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Old 10-20-2019, 09:48 PM   #1
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Tecma macerator clogged

Our Tecma toilet fills with water but when it tries to flush I can hear the macerator attempt to run but it seems something is stopping it. Has anyone had to take the macerator apart to clear it out? I know the pump is inside the toilet and that to access it you need to remove the toilet from the floor and wall. Might just call a repair person tomorrow. I donít want to flood the bathroom. Lol

Thanks for any suggestions and help. This is the back toilet in a 36LA.
Steve
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Old 10-20-2019, 10:32 PM   #2
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These units can be removed fairly easily. Turn off the water and drain the toilet (hold the two buttons simultaneously). Remove the two screws holding it to the floor and then carefully slide/rotate the toilet away from the wall about 4 - 6".

Then reach around the back and disconnect the wires and the hoses (all easy to see and reach). Recommend you take the toilet outside to finish the job from there by dismantling the exhaust line where the macerator is located.

We flushed the lines/macerator with a hose.

Sorry - but I can't remember if all this is described in a manual or on-line. There are some pics that might help.
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Old 10-20-2019, 10:42 PM   #3
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Installation/Operation Manual............
https://www.thetford.com/wp-content/...enceRV-Eng.pdf
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Old 10-21-2019, 08:21 AM   #4
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Thanks Biscuit!

I made a call to a local mobile rv guy and basically they didnít want to touch it. So it seems like Iíll be following your steps to get the toilet outside to better get access to the macerator pump, and go from there. Will keep you posted.

Thanks again.
Steve
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Old 10-21-2019, 08:49 AM   #5
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Agree with others, not a bad job at all. Scale of 1 - 10 its a 3.
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Old 10-21-2019, 09:27 PM   #6
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I've had mine apart twice now. Both times one of the grand kids flushed a towlette that clogged up the impeller. I was relatively easy and, in my case, not gross at all. The nasty stuff had all been flushed away. Unfortunately, my toilet is a Dometic so I can't give you specific help. Previous post have been correct. Behind the toilet you should have a water connection, sewer connection and electrical plug. I didn't want to carry the toilet across the bed to take it outside set it on the counter over the washer. (plenty of towels and a bucket, just in case. I figured, the counter, tile etc can be easily sanitized but the bed, not so much.
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Old 10-23-2019, 06:02 AM   #7
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Here is an update. Success! Thanks everyone for your input. It gave me confidence to just do this myself. The 4 screws holding the toilet down were not easy to remove with the small Allen wrench I had. Will need to find a different tool to screw those back in. After turning the water off I drained most of the water out by holding both flush buttons. Like mentioned I was able to slide it away from the wall about 8-10 inches at this point. Before unhooking the wires I marked them all to keep them straight. There are 5 wires. Once the sewer exhaust and water connections were disconnected I moved the toilet to the middle of the floor. I spread out a towel and slowly turned the toilet upside down. Good thing a had that towel. At this point all I had to do is remove the hose connecting the toilet outlet to the macerator pump. Once that was off I was able to use needle nose pliers to remove the cloth. I reversed my steps and got it all hooked back up. Well, almost all. I did not reattach the wires to the water solenoid and when I tested it, you guessed it, water came out from under the toilet. Once that wire was reattached and a few gallons of water cleaned up I tested again and now feel confident it is again working as it should. If I ever have to do this again it will be easy, yet still not something you want to do. In case you were wondering there was no smell or mess. The internal parts of the system stay very clean.

Thanks again for everyoneís input.
Steve
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