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Remove the ice thickness probe that is hanging at the top of the evaporator plate and clean really good put it back push the freeze tab. If the ice is still getting to thick and not causing the machine to go into a harvest then replace the probe , make sure when you do this to set the thickness by using a 1/8 inch drill bit, lay the bit flat between the evaporator plate and the probe turn the 1/4 screw in or out to achieve the 1/8 inch. The probe is what sets the machine into a harvest, if the ice is not building up enough to cause the water to come into contact whit the probe long enough then it will not go into a harvest. if the ice is getting to thick and the water should be running over the probe it should have went into a harvest if not then the probe is not sensing it to tell the CM3 to go into a harvest.
This machine has a cube size control. Which tells the machine when to go into a harvest. there is a harvest switch did you try to force it into a harvest and if you did, did it harvest. depending on ambient temperature from start of freeze cycle to harvest it should be making ice every 15 to 18 minuets and then go into a harvest. so start the ice machine and time it , run it for 18 minuets and force into a harvest. after ice drops check the ice bridge thickness. Bridge thickness should be about 3/16'' the ice dimple must not be DEEPER than 1/16". If this is good then we need to look at what is not working to harvest ice. The cube size control is a reverse - acting thermostat that controls the start of the timed freeze cycle. It must be set properly to prove the correct size cube bridge. When it is closed, an indicator light on the control board will be on. If you force it into a harvest and it harvest the ice with no problems and the ice is at the right thickness then replace the cube size control, but if dose not harvest the ice and you see the ice is at a good thickness and not to thick because if it is to thick it will freeze to every thing and will not drop. SYMPTOM. Unit freezes, but will not try to harvest. POSSIBLE CAUSE: Cube size control will not close; to check: Unplug water pump, switch unit OFF and then ON, in about 2 minutes the timed freeze light on the control board should be ON. PROBABLE FIX: If timed freeze light does not go ON, replace cube size control. SYMPTOM #2: Timed freeze light glows, but after 4 minutes unit dose not power hot gas nor purge valves Then replace control board.
You need to descale the water circuit according to manufactures instructions. Scale build up keeps the ice from releasing during harvest cycle. If overall ice thickness is to thick, rotate the ice bridge thickness screw at the top of the platen countercloclwise about 1/8 of a turn max between freeze cycles until desired thickness obtained. If you do not know the correct descale solution alway use a nickel safe descaling solution.
Try putting a compression coupling in eliminating the valve. Did that on my machine a few months back, have not had any more leaks. Just other issues with thick ice and won't harvest correctly. Any suggestions?
The bridge thickness on this model starts with the low pressure cut-in control that then in turn starts the timer. It sounds like you have either a bad low pressure control or one that has been tinkered with. To start with if you have a low pressure gauge that you trust what I do is take all of the time off of the timer and unplug the water pump. Then start the unit and watch the low pressure gauge to see at what pressure the harvest starts. an ICEU150 with R-404A should cut in at 44psi. Once that is set plug the water pump in again, put about 400 seconds on the timer, see how thick the ice is after 2 cycles and adjust as needed.
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