Rank: Member
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Joined: 5/5/2013(UTC)
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hi I have a modified milkshake machine converted to ice cream machine old machine but basically works I dunno the right forum but I need help it has a hopper you keep the icream in and that's set at 61psi the AX expansion valve I have it set to 18 to 16psi but my ice cream doesn't get cold enough its -6 needs to get down to -10 the sight glass shows no bubbles so has enough 502 in it but when compressor runs for a long time the entire compressor ices over 1/4 inch of ice what does that mean if no one can help what forum would be good for me
its also stoelting
oh and the expansion valve that's for when the ice cream temperature makes it least -7 to -10 from the temperature prob
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Rank: Advanced Member
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Joined: 9/10/2007(UTC)
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You can post on web site appliancejunk.com Not too familiar with your system. Might check for a partial evaporator clog or an evaporator fan turning slow. Also you might have a partial restriction in the expansion valve. You can try adjusting the valve to see if the restriction will clear.
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Rank: Member
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ah ok its a 1987 softserve milkshake machine but how do you check for clogging or the evapator
all I have is just gauges I not a ac person just had the guy put gas in and I adjusted the expansion valve the ax
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Rank: Advanced Member
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Joined: 9/10/2007(UTC)
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If the ac person failed to purge the system with a vacumm pump, there might be non-compressables in the system.
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/10/2007(UTC)
Posts: 9,586
Was thanked: 2 time(s) in 2 post(s)
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If the ac person failed to purge the system with a vacumm pump, there might be non-compressables in the system.
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Rank: Member
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doubt they purged it
it was low on 502 gas so they just added gas as the sight glass was bubbling and they still had 502 but the compressor sticks at -6 and the compressor ices over completely I cant post my pic its too big but ill try to post links to my website if that's ok
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Rank: Member
Groups: Registered
Joined: 5/5/2013(UTC)
Posts: 7
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here is you tube video I made for person as I was having seal leaks as the ice cream wasn't hardening either you will notice the compressor icying over MOV0DA - YouTube
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Rank: Advanced Member
Groups: Senior Expert
Joined: 9/10/2007(UTC)
Posts: 9,586
Was thanked: 2 time(s) in 2 post(s)
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This is a refrigeration system, not a chiller. Looks like he put too much refrigerant in it, gauge pressure too high and compressor getting liquid refrigerant will not last very long.
Should have checked the name plate refrigerant ounce requirement for a full system and measured what he put in with a digital scale.
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Rank: Member
Groups: Registered
Joined: 5/5/2013(UTC)
Posts: 7
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oh ic I have no idea
the gauge pressure is supposed to be 18psi at 75 degrees but I set it to 16 as it was 50 degrees that's for that one port the hopper gauge is set at 61psi and the high pressure side is 150psi+
but thanks for trying (:
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