Results 1 to 10 of 10
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12-11-2010, 03:23 AM #1
problem when defrost, always high pressure
dear all, please help me. i just finished making a new tube ice maker, but there is a problem, everytime the machine defrost and the ice came out, the machine get high pressure. i must restart again, but when it restart for about 5-9 minutes, it defrost again. the normal time for defrost are around 20-25 minutes. Please help me and give an explanation why this can happen. If possible please give the diagram picture and the scheme of the machine system.Thank's for helping me.
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12-11-2010, 03:37 AM #2
Re: problem when defrost, always high pressure
The defrost system is with one tube and return by the wet suction or is a two tubes system, which the hot gas return goes to the condenser?
To make progress is never good enough, I want to do better and better and better
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15-11-2010, 02:20 PM #3
Re: problem when defrost, always high pressure
@sandro : thank's for the reply. The defrost system uses 2 tubes and the hot gas goes to another pipe. Can you please send me the picture / scheme of the system ?
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15-11-2010, 02:42 PM #4
Re: problem when defrost, always high pressure
Sorry...Isn't 2 tubes at all » one goes with hot gas and the other with the returned mixed vapor and liquid?
To make progress is never good enough, I want to do better and better and better
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15-11-2010, 10:22 PM #5
Re: problem when defrost, always high pressure
It is your design so please provide present scheme layout so that we can comment on it.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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22-11-2010, 12:59 AM #6
Re: problem when defrost, always high pressure
@Brian : thank you, about the layout scheme, can you please tell me how to post it ? since I am a newbie here.
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22-11-2010, 01:06 AM #7
Re: problem when defrost, always high pressure
Hopefully the compressor is unloading during hot gas defrost harvest time.
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22-11-2010, 07:08 AM #8
Re: problem when defrost, always high pressure
Sounds like a Frick ice machine .
Does it make ice inside or outside of tubes?
Hopefully a schematic will be posted soon .
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25-11-2010, 01:40 AM #9
Re: problem when defrost, always high pressure
@ Ranger1 : thank's for the reply. It makes the ice inside the tubes.
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25-11-2010, 02:28 AM #10
Re: problem when defrost, always high pressure
Harvest cycle should be around 5 minutes, and tube ice should start dropping with vessel press/temp at or around +5.0'C.
It appears vessel is low on refigerant, is icemaker vessel a flooded evaporator?
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