Question about Moyer Diebel 24 in. 501HT Built-in Dishwasher

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Where can I get a 10'' Neoprene Hose a-55-f-NSF-51

We inherited a Moyer Diebel 501HT (I think-no #'s on it anywhere, I had to match it to a picture and dimensions), It has not been maintained AT ALL!!! Much like everything else in this building! I know that at one time they were running non-commercial dish soap through it, Yikes! Anyway the thing hasn't really worked real well for a while, but now it's leaking! I had my maintenance guys take a look at it and they narrowed it down to a split hose, cracked all the way down the middle. We need a replacement but they can't seem to locate one. Any suggestions? As a side note,after crawling around looking for a serial or product# I was amazed to see how clean the parts inside are. My thought is that it should not be running so poorly(leaves a horrible residue on everything, and barely cleans).....any other words of wisdom or toodleage you would care to impart would be much appreciated. Thanks Signed, Drowning in crappy equipment and thier spewing ****

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Let me know where are you located and I'll send you the address to get parts for Your MDM 501 HT my email address is --
may be you have already solve the problem.
Best regards

Posted on Feb 23, 2009


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Posted on Jan 02, 2017


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J have a moyer diebel 500 HT i need a picture of the tank were the heater elements go ..i had a repair guy com in to wire the heaters up because they shorted out and he wired them wrong if you can help me...

Hello there
The 500HT machine is very old one. Turn off the power first. To get to the elements you have to get the control box off first so you can get to take off the elements cover , now you can see the elements.
If the system have been wired wrong and short circuit it. the temperature control may have to be change too. I would change the two elements and the temperature control and the hi ltd control all together at the same time so you know that system have no problem anymore. All the best Dickson

May 02, 2011 | Moyer Diebel 24 in. 501HT Built-in...

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My 501-ht doesn't dispense detergent?

Could be clogged hose or filter screen. Could be pump hose worn out. Check that the hose goes to the bottom of the detergent container. Could be detergent pump not operating. Could be timer switch not working or not adjusted properly.

Nov 30, 2010 | Moyer Diebel 24 in. 501HT Built-in...

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The dishwaher will not stop washing.Open the door and it still runs.

It sound like your door switch problem, change the switch and you should be ok.

At your service , Dickson.

Nov 02, 2010 | Moyer Diebel 24 in. 501HT Built-in...

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Moyer Diebel 501HT goes to temp 57 degree C, it should go atleast 71 degree C, What should i do ? thx.

First item to check would be the high limit switch attached to the outside of the booster. Should have 2 wires. Switch is the size of a dime. The switch has a reset button at the centre. Just push in slowly. You should hear or feel the slight click. Do not touch the wire or terminal at the switch when power to machine is on.

Sep 13, 2010 | Moyer Diebel 24 in. 501HT Built-in...

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When we close the door and put switches on, only the temp light comes on. nothing else happen. Thanks

Could be the switch marked delime is in the on position.. That switch should be in off position. (pushed in at bottom)

Sep 11, 2010 | Moyer Diebel 24 in. 501HT Built-in...

1 Answer

I have an older model 501ht. It is not getting to 82 degrees centigrade only about 75. Needs to get to 82 to sanitize there an adjustment I can tweak ?? thanks

Could be that the temperature guage is innaccurate or adjust booster thermostat higher with a screwdriver at centre shaft on thermostat. If you have 2 thermostats together, then its the thermostat on the right side looking to the front of the machine. If the thermostat is already at maximum then replace.

May 21, 2010 | Moyer Diebel 24 in. 501HT Built-in...

1 Answer

Moyer Diebel Dishwasher arms are not spinning and doing lousy

Hello there
First to check is the water level is it just cover the round filter and no more, or is it much lower from the filter. It seem you have not enough water in the tank to do the washing that is why you have a lousy washing job, not enough water to spray upwards don;t talk about the top spray arm , the water doesn't reach there at all.
You can check it out by manually fill the machine with water up to the filter and start the machine up when the machine is running open the door and you can see the water spray up to the top be careful the water will spray out to your face too.
This is only to check to see the motor is running normally.
If the water level is good ( that is just touch the filter) and the problem still there, then the other cause the problem will be inside the pump motor the part call the impeller may need changing.
Do you have the manual book so I can show you which part we're talking about and let me know where your district so I can tell you where to get the parts from . My email address is God Bless Have a nice day, Dickson

Apr 27, 2009 | Moyer Diebel 24 in. 501HT Built-in...

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