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Moen PosiTemp faucet cartridge and how to adjust the scald guard feature.
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The Moen PosiTemp tub and shower faucet cartridge, how to replace it, how to remove the handle and how to adjust the scald guard feature of the faucet. The safest and most comprehensive solution often comes from the help of a professional plumber. You can find one in you area by filling out the short contact form here. It's very important that you turn off the water before you attempt to replace the cartridge, it is also very important, you don't set the water temperature too high, someone can be scalded. First things first, make sure the water is off, you will need to turn the main water valve off. Turn on both the hot and cold side of another faucet in the home (at a lower level if possible) to be sure the water is off and to relieve the pressure from the water lines. |
Click on any image to see a larger image.
| In many of the images below you will notice the chrome plate is removed, but you will not need to remove the the chrome plate to repair this faucet and replace the stem.
With this model, you need a small Alan or hex key to remove the handle, you will need to completely remove the screw in order to remove the handle. Once the screw is removed the handle will just come off,
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Click on any image to see a larger image
| Once the handle is removed there will be a piece of plastic attached to the cartridge with a Philips screw, you will need to remove the screw and piece of plastic, so that you can remove the chrome sleeve. Note the image on the right, this sleeve just pulls straight out.
Once the sleeve is removed you will be able to remove the pin that holds the cartridge in, Make sure the water is off at this point. |
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Remember the chrome plate and the
Goof Plate do not need to be replaced, to replace the Moen Positemp Cartridge. This is what the front of the faucet looks like with the handle and sleeve removed. |
Notice the brass pin that goes through the front of the cartridge, using a small pair of pliers pull the pin straight up. If you did not turn the water off or did not relieve the pressure, the cartridge may shoot out at you. |
Put the brass pin in a safe place, most new cartridges do not come with a new pin, You will be able to purchase a new brass pin if you need one. With the pin removed, put the piece of plastic back on to the Moen Positemp cartridge. |
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| With the plastic attached to the Moen Positemp cartridge, use the plastic as a handle to pull the cartridge straight out. |
If the Moen Positemp cartridge will not come out, you may need to get a special tool to remove it. |
Pay special attention to the above image note there is a rubber washer with a hole on the left side. |
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Now note the rubber washer on the other side of the cartridge, notice the hole is on the right side. the point of mentioning this is, if the rubber washers come off, make sure you put the correct washer on the correct side of the cartridge.
under the rubber washer there is a hole in the plastic of the cartridge that lines up with holes in the rubber washers, so that you will have no trouble putting the rubber washers back on correctly. It is also important that the Moen Positemp cartridge be installed in to the shower body correctly. |
Unlike other Moen cartridges, the Positemp will not work properly if it is installed upside down, Note: A Plumber from New Jersey was kind enough to point out, If the water lines have been been installed backwards in the walls, (the hot water pipe on the right instead of on the left as per the plumbing code) you will need to have the HC markings on the faucet facing down for the faucet to work correctly, |
Please check the location of the HC marking on your faucet before you remove the cartridge and be sure to reinstall the new one the same way, installing it backwards can cause scalding.
Thank you Don From NJ. |
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| Note the above picture. click on it and look closely at the front of the Moen Positemp cartridge, the tab at the top has the letters H C, This needs to be on the top, If the pipes in the wall have been installed correctly, if not then it needs to be at the bottom. |
Replace the pin, make sure the pin goes in all the way, you will not have to force it, if it does not go in easy, the cartridge may not be all the way in, turn the brass part of the stem to relieve any pressure from inside the brass body. |
If the pin is in correctly the chrome sleeve will slide right over it, if not the sleeve will not go on. Now note the Brass part of the stem, that the plastic was attached to, you will notice a little notch on one side of the brass. this must face DOWN. |
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| With the Chrome sleeve back in place put the larger part of the scald guard feature into the sleeve in can only go in one way |
The smaller piece is the adjustment part of the scald guard feature What this does is, it stops the handle from going past the point you set it at. if you place it with the tab further to the left the handle will move further allowing hotter water |
more towards the right will restrict the hottest water. Keep in mind water hotter then 120 degrees Fahrenheit. Can be dangerous and cause scalding. |
| Moen Cartridges 1225B, This is a good replacement for all single handle Moen faucets that use the Moen 1200 cartridge except the Moen PosiTemp Please see images below. |
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| This website is designed and run by: Thomas Petito Reardon: a Master Plumber. |
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