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frigetater
06-02-2005, 07:08 PM
The maintenence guy at a facility that I do refer./ac work for called me yesterday. Old, but reliable Scotsman ice machine cm500we-1e no ice in bin. He took off cover and said that suction lines froze back to compressor and cold water. Turned unit off for a few hours then restarted with good ice production for 36 hours. He also slightly adjusted cube size control. Today same. He said heavy thick ice on line back to comp. Water in reservoir was cold. but no ice. Well I am thinking overcharged. But guy says no one has messed with it, and I beleive him. R502 unit. Guess I will go tomorrow and put the gauges on it. Might have to change to 408a. Also, what size dryer does it need?...thanks
icemeister
06-02-2005, 07:32 PM
I doubt that it's a refrigerant-side problem so don't go slapping the gauges on right away. It's most likely a water related issue.
frigetater
06-02-2005, 07:37 PM
good water flow...at least this is what I am hearing....pump runing and flowing water....i agree with you now that i have had time to think about it....shouldn't be refrigerant problem
frigetater
06-02-2005, 07:57 PM
thinking to myself, if the pump motor is cutting out intermetiately, then the cube control would still activate the timer which would defrost/harvest and that should be melting the ice on the lines...hmmmm
t527ed
06-02-2005, 09:48 PM
coullld be water inlet valve hanging open???
craig1
06-02-2005, 09:57 PM
If no one has messed with it, it can't be overcharged. check for a sticking timer or hot gas solinoid valve. my guess is the timer. show the maintenence guy how to advance the timer to the harvest postion. then the next time it freezes up, he can advance it to harvest and see what happens. if it defrosts, the problem may be the cube control or timer. if it doesn't defrost when manually advanced, check for a stuck or burnt relay contact, bad hot gas solinoid or bad microswitch on the timeclock.
amdaco_99
06-02-2005, 11:05 PM
check water fill any filters needs water to help harvest ice
frigetater
06-03-2005, 07:44 PM
it was the water inlet valve....simple...I read too much into the maintenence guy's description of the problem....thanks guys
t527ed
06-03-2005, 10:04 PM
was the valve sticking open??
frigetater
06-04-2005, 08:50 AM
you nailed it t527ed