Question about Hobart AM14-253 Free-standing Dishwasher
This AM14 has all kinds of special plumbing that we dont fully understand. It is now out of service because the water leak caused great damage to the floor. We need some specs for all the special plumbing that includes a water heater with a gauge on the feed line that rises and comes in the top with some kind of silver topped relief valve that also has an electric valve. In addition the exit water is plumbed in plastic and there is another valve that controls hot water injectged into the exit water to prevent the plastic pipes from deforming or "melting". We called Hobart out and the quoted $800 - they didnt spec what was wrong. Can we get the specs for the installation and the sequence of things that are supposed to happen when we fire it up so that perhaps we can make a better description of the problem. We dont have $800 of a unit that is only years old.
Sounds like you have a booster heater. Hatco maybe or one built on the machine next to the pump motor.? the valves on top the chrome one is a vacuum breaker. easy to put 15.00 kit in. the electric one just fills and rinse gauge just tell pressure . Did a valve on the booster heater leak or its tank maybe. The AM14 is very simple crect temp and presure water going in and your in business if the machine is ok. Boosters have a saftey valve that will go pad and they let water out. just like all home water heaters do. they screw into the tank. yours should have a line to the drain. so if it does leak it goes down the drain not on the floor. all the things you describe on the upper right of your sishwasher are just the nopremal fill and rinse. both the crome thing and the electric have kits that can be put in. I would call hobart and say sendf me a itamized estment of repair so you know what your paying for. with part discritions and numbers and prices. Or call me LOL kidding
Posted on Sep 30, 2008
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Posted on Jan 02, 2017
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Hot water pressure relief valves serve two functions. The first is to remove high-pressure water from the hot water tank. The second function is to act as a high temperature valve to remove water that exceeds a predetermined point for the valve. Both of these relief settings are preset at the valve factory. Many pressure relief valves will come with a metal tag that identifies these release points. If you're attempting to remove the hot water heater pressure relief valve, pay careful attention to ensure that you replace with the correct valve.
Your hot water heater has a pressure relief valve safety mechanism. When pressure inside the water tank exceeds certain limitations, the valve opens up to allow the pressure to be released. A faulty pressure relief valve will not release excess pressure, which could cause extensive damage to your home. You should test the hot water heater pressure relief valve once every six months to ensure proper operation. If the pressure relief valve fails the test, replace the valve with a new one immediately
Locate the pressure relief valve on your hot water heater. The pressure relief valve has a lever handle on top with a drain pipe attached to it. The pressure relief valve is most often on the side of the water tank toward the top. Newer models of hot water heaters have the pressure relief valve on top of the water tank.
Inspect the area around the pressure relief valve for signs of leaking water. If there is leaking water near the relief valve connection, replace the relief valve. If no leaking is evident, proceed with testing the pressure valve.
Examine the area below the pressure relief valve drain pipe. Most water heater closets either have a drain in the floor below the pipe or the pipe is inserted into another pipe to direct the water out of the home. If the end of your drain pipe is not in another pipe or there is no drain in the floor, place a bucket under the drain pipe to catch water when you test the pressure relief valve.
Pull the lever handle on the top of the pressure relief valve up with your fingers. A working lever will lift up without difficulty.You should begin to hear water going through the drain pipe. Slowly release the lever to shut off the pressure relief valve. The pressure relief valve is good. If you did not hear water running through the drain pipe, lower the lever on the pressure relief valve and replace the valve. If the lever is difficult to raise, do not force the lever. Replace the pressure relief valve.
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