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-   -   Ice Machine Help?? (http://www.diychatroom.com/f17/ice-machine-help-175842/)

Anson 03-29-2013 09:12 PM

Ice Machine Help??
 
Anyone have any ideas why a Hoshizaki ice maker would freeze up on the BACK of the evaporator plate only? I have cleaned it throughly and yet the water is still running up over the ribs on the plate and eventually freezing up. I have also tested for any refrigerant leaks and found nothing. The front of the plate makes perfect cubes. Driving me crazy!! Any thoughts or suggestions would truly be appreciated..Thanks, Anson

beenthere 03-29-2013 09:16 PM

The water bar, plastic trough is still restricted. Pull it and reclean it.

Anson 03-29-2013 09:22 PM

Thanks for your help, I've pulled it off twice and flushed it, do you think that sediment could still be circulating in the system then? You might be totally on to something here......Thank you...

beenthere 03-29-2013 09:25 PM

Seen it before on them. Sometimes the little ports the water comes out clog up almost immediately after you clean it, or the next day.

lush the bar with lots of water in both directions. make sure all ports are clear. And then flush the sump again.

Anson 03-29-2013 09:28 PM

Doing that tomorrow morning then. Great forum here, very glad I joined. Thanks again, Anson.

COLDIRON 03-30-2013 07:45 AM

When you say that you cleaned it do you mean cleaned according to the owners manual? And did you use approved ice machine cleaner (only purchased in a HVAC supply house) ? Which is acid. Then after cleaning throw away the first few harvests. Post back let us know what's happening. Ice Makers can be challenging even for experienced Pros"s

Anson 03-30-2013 01:21 PM

Thank you for taking the time to try and help me with this.... I cleaned it with nickel safe ice machine cleaner again this morning and its still messing up! Question: is it normal to have an air bubble in the top of the plastic tube with the jets? The jets are all streaming nicely and consistent. Another question: some cubes seem to be getting deformed and causing the water to run up and along the sides of SOME ribs on the evaporator plate, could this be the cause? The defrost cycle seems to work fine though. If it's too much then I will call someone but I really don't like getting beat by a machine! Thanks again for your time, Anson.

Anson 03-30-2013 01:23 PM

Sorry, yes, cleaned it according to owners manual.

beenthere 03-30-2013 01:25 PM

Its normal to have an air pocket. Did you pull the tube and clean each jet/port out.

Anson 03-30-2013 07:58 PM

Quote:

Originally Posted by beenthere
Its normal to have an air pocket. Did you pull the tube and clean each jet/port out.

Yes, I pulled the tube out and blasted it again with water. I also cleaned all the jets individually and they are all streaming nicely. It seems as tho that when 1 ice cube starts becoming deformed the water goes up and over the sides of the ribs causing "saddling". Is there something I could use to "scrub/polish" the evaporator plate or would that do more harm than good? It really seems like something on the plate is causing a few deformed cubes and snowballing from there. If you guys are tired of this subject I totally understand.....thanks tho..

beenthere 03-30-2013 09:07 PM

Brass brush.

Anson 03-30-2013 09:42 PM

Quote:

Originally Posted by beenthere
Brass brush.

That's great!! Thank you...

COLDIRON 03-31-2013 10:56 AM

I have to bail out . Without being there and watching the cycles and flows and temperatures it's to difficult to walk through it on the forum.

Good luck and listen to beenthere hopefully he will be able to walk you though it. Coldiron out.

Anson 03-31-2013 12:28 PM

Quote:

Originally Posted by COLDIRON
I have to bail out . Without being there and watching the cycles and flows and temperatures it's to difficult to walk through it on the forum.

Good luck and listen to beenthere hopefully he will be able to walk you though it. Coldiron out.

I totally understand, like trying to explain computer stuff over the phone to my mother in-law!! I think the evaporator brush is the answer. Going to find a nylon brush today (not paying $110) for one from hoshizaki! Thanks everyone for the help, it really is appreciated.

hvac instructor 03-31-2013 12:43 PM

Has the water pump been replaced with a after market one. Maybe to much pump pressure. Some machines used to have a clamp on the water line going to the plates to restrict how much water is going over them. I cant remember what brands.


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