Northdude
10-10-2015, 01:43 PM
Hey guys hope someone can shed some light on my issue as I am totally lost with this one ;(
Was called out to this machine as not producing ice. Found the machine going off on high pressure due to condenser fan pressure switch being faulty. Ordered and fitted new switch, vacuumed system out and weighed in correct refrigerant charge, fan cycling fine etc but when it comes to harvest the ice is failing to drop, it drops like 1 in every ten attempts.
The harvest duration is correct, hot gas solenoid is opening. I have weighed the correct charge in twice. During harvest suction pressure is at 75psi and high side is at 120psi. There just dosent seem to be enough head pressure to melt the ice. It states in the handbook that hot gas temp should be 65 degrees Celsius, I don't have a touch probe but have taped my standard probe to the hot gas line and the maximum I am getting is 34 degrees on harvest, the ambient in the room is around 11 degrees as its a cellar. The temp before and after the hot gas valve are the same so can't see it being a valve issue, the machine has been working fine the last 3 years in the cellar.
Really stuck with this one, seems the head pressure is just too low to melt the ice but have no idea why, any help will be great, thanks in advance ;)
Was called out to this machine as not producing ice. Found the machine going off on high pressure due to condenser fan pressure switch being faulty. Ordered and fitted new switch, vacuumed system out and weighed in correct refrigerant charge, fan cycling fine etc but when it comes to harvest the ice is failing to drop, it drops like 1 in every ten attempts.
The harvest duration is correct, hot gas solenoid is opening. I have weighed the correct charge in twice. During harvest suction pressure is at 75psi and high side is at 120psi. There just dosent seem to be enough head pressure to melt the ice. It states in the handbook that hot gas temp should be 65 degrees Celsius, I don't have a touch probe but have taped my standard probe to the hot gas line and the maximum I am getting is 34 degrees on harvest, the ambient in the room is around 11 degrees as its a cellar. The temp before and after the hot gas valve are the same so can't see it being a valve issue, the machine has been working fine the last 3 years in the cellar.
Really stuck with this one, seems the head pressure is just too low to melt the ice but have no idea why, any help will be great, thanks in advance ;)