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baypro21 ???

Old 04-01-2017, 08:36 PM
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I have to check the refrigerant pressures in my Manitowoc ice maker. It uses R404A. I have a good manifold set with R12 hoses. Are they the same connections? I tried looking online and could not find out for sure. I know the high side should be 500 and low side 250 PSIG. I would just try but I only have a small can of 404 left and I don't want to risk any leakage. Thanks Mike
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Old 04-02-2017, 06:27 AM
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Not trying to be a jerk, but you need a qualified tech by reading your questions. You're not even close on what the pressure should be. More like 25 and 250..are you reading the test pressure on the data tag? Same gauges and hoses. Ice machines are tricky to charge if you are not experienced.
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Old 04-02-2017, 08:21 AM
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Originally Posted by AC View Post
Not trying to be a jerk, but you need a qualified tech by reading your questions. You're not even close on what the pressure should be. More like 25 and 250..are you reading the test pressure on the data tag? Same gauges and hoses. Ice machines are tricky to charge if you are not experienced.
Thanks AC, I called a buddy that is a HVAC guy yesterday, he is coming over. He said the same thing about being tricky. He has not serviced one in 8 years. Here is the data plate.
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Old 04-02-2017, 09:37 AM
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Yes that is the test pressure not operating pressure. Only holds 15 ounces. I would not put gauges on it until it is check out. 99% of the time it is something else. Plus your going to lose 404 if you do. Normally you weigh in a new charge.
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Old 04-02-2017, 10:43 AM
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Just saw this. AC has covered everything.

Ice makers/refrigeration is a little different than residential hvac (which is what I do). It's more precise (and tricky) with pressure switches and such. It seems to help if you are grungy/hippie like. I'm not sure why.
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