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Author Topic: Scotsman Ice maker DCE33A-1SC MY first  (Read 631 times)

Offline curjones

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Scotsman Ice maker DCE33A-1SC MY first
« on: September 23, 2016, 12:32:44 PM »

Have never seen one or worked on one, so I need some manuals and study material, theory of operation.  Reading post now.
but if you have some info or links please help.

customer said he heard Gurgling sound, pump.?

It says you have to clean ok.

I cant even see how to get the top parts out, see the lines going to top of unit COOLING ones and it doesn't look like its servicable so far.

fan in back apperars also to be a pump held by two screws.

So I guess this thing pumps water over the coils some how,
forms a curtain of water,, IS THAT Continous?

ANd then when cold, either pressure change or timer, puts on hot gas valve, melts and harvest the ice.

Again I don't see any of these components, have not figured out how to crack the safe yet.

what parts are to be cleaned.

saw a bulletin on the water inlet, solenoid getting, hard water, chlorine deposits

any answers will help me learn,

will be back later.  Again this is my first one,  CLUELESS in Mississippi  LOL
« Last Edit: September 23, 2016, 12:35:22 PM by curjones »
About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack(diet coke in my case) . The small green square=personal message.

Offline curjones

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Re: Scotsman Ice maker DCE33A-1SC MY first
« Reply #1 on: September 23, 2016, 12:54:22 PM »
Found this
https://www.dropbox.com/s/k4u25xeabus70li/Dce33.pdf?dl=0
and this
owners manual

https://www.dropbox.com/s/xz4pk80fijlz5iu/Owners%20Manual%20DCE33.PDF?dl=0


Guessing the side panels do come off to access the top evaporator, still studying. just posting what I find to help others as well.
About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack(diet coke in my case) . The small green square=personal message.

Offline SHELTAR

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Re: Scotsman Ice maker DCE33A-1SC MY first
« Reply #2 on: October 01, 2016, 12:55:47 PM »
The DCE33's use a circulation pump to spray water up on evaporator plate. There is a cold control that monitors the temperature of the evaporator. The cold control swaps contacts when it gets cold enough. "Cold enough" means that there is ice in the evaporator mold. When the cold control (called cube size thermostat) swaps contacts it energizes a hot gas valve that sucks hot refrigerant from condenser directly through the evaporator mold. This is what makes the ice drop from the mold.

On any "no ice production" complaint, I always always always begin by feeling the hot gas valve. I'm specifically feeling for an oily like substance which would be refrigerant. If I feel that, then I know that the hot gas valve has developed a leak.

Pro Tip number 1: scotsman DCE33's are very prone to sealed system leaks. Usually at the hot gas valve but I have seen leaks in the heat exchanger inside the armaflex.

If no oil on the hot gas valve, then check the circ pump operation by folding up the water curtain in that little rectangular window where the spray nozzles are.

Pro Tip number 2: those curtains are ripped easily and can fold back up over the spray nozzles blocking water movement.

Pro Tip number 3: dirty condenser coils cause refrigerant temperature to be higher than normal thus prolonging the time it takes to satisfy the cube size thermostat. In this scenario, by the time the cube size satisfies, the previous dump of ice has already melted down the drain. This appears as a no ice complain but is actually a "not making enough ice" complaint.

Offline SHELTAR

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Re: Scotsman Ice maker DCE33A-1SC MY first
« Reply #3 on: October 01, 2016, 01:01:34 PM »
When the cube size thermostat fails, it can't swap contacts so it's stuck in circulation forever. Since it's stuck, the water that was used for full now becomes depleted causing the circ pump to make a gurgling sound. You'll know that this is happening because if you fold the curtain up and reach your hand up to the evaporator and feel the ice mold, the ice cubes will be mushrooming out of the mold or there will be a solid brick of ice up there.


Offline curjones

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Re: Scotsman Ice maker DCE33A-1SC MY first
« Reply #4 on: October 02, 2016, 06:23:43 PM »
Thanks Sheltar,  This post will help others for sure now.

The unit I had in shop needed a good cleaning.  I took off side panel and got to the evap/cube form, located on top of unit. There was
lots of mold, black stuff. Cleaned

Made a home sanitizing solution  1 oz bleach to two gallons of water.  Owner was suppose to pick up the cleaning solution for calcium hard spots but did not.  He had never done any cleaning on this unit.

He said he heard the pump Gurgling, and I also checked to be sure the water fill solenoid was strong.

After running the unit with sanitizer and cleaning up, checking spray nozzles, the unit ran well.

Cube size was set right and I had no other problems.

I still sort of wonder how hard it is to pull that pump.  The if it aint broke dont mess with it rule was in effect.

I didn't try lol.

Thanks for the input, I may see others in the future or someone else will get a good Jump start.
About the icons: The beer is tip link, if a tech saves ya some money buy em a 6 pack(diet coke in my case) . The small green square=personal message.

 

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