Northdude
03-01-2011, 04:45 PM
Hi guys, sorry to bombard you with questions here but i need a bit of advice,
Firstly i have had a few call outs to a MAIDAID MC150A ice machine (similar to a Brema), the first call i did i found the tray where the ice is formed to be really iced up as if there was a defrosting problem so the ice wasnt dropping and building up. I manually defrosted the ice and set it away and watched it through a few cycles, everything worked fine, the ice stat kicked in the defrost timeclock, water flow into the tray was fine and hot gas etc was all fine, all the ice dropped from each cube,pressures are all fine as well. 2 weeks down the line i got called back again and find the same problem a mass build up of ice covering all the cubes. Just wondering if anyone has had a similar problem, because everything does its job when i am there i am a bit stumped as to why it is doing it every 2-3 weeks. Maybe ice thickness stat playing up? The defrost timers on these are the standard ones you find on Bremas etc, is there a way to increase the defrost time? I have had a similar problem in the past with a Scotsman but i managed to increase the defrost time using the dip switches and its been running fine since.
Secondly i have condemned a copeland scroll compressor, 3 phase, Mod - ZB21KDE - TFD - 524. The compressor is only a few years old, was making a lot of noise and wasnt pumping, its been a long time since i looked at a 3 phase comp, phase to phase on the incoming breaker i was reading
390V,397V,384V, and phase to neutral 224V,235V,216V, do these readings seem quite low and mis - matched or are they normal? Just wondering if it could be a factor(216V seems low). The readings are the same on the compressor as well.
And lastly does anybody have any parameters/instructions for a Gram Controller on a Gram 2 door bench fridge Mod - K1407CSHADL (cannot find anything on the net)
Sorry to bombard you with all this, any help will be much appreciated, thanks in advance :D
Firstly i have had a few call outs to a MAIDAID MC150A ice machine (similar to a Brema), the first call i did i found the tray where the ice is formed to be really iced up as if there was a defrosting problem so the ice wasnt dropping and building up. I manually defrosted the ice and set it away and watched it through a few cycles, everything worked fine, the ice stat kicked in the defrost timeclock, water flow into the tray was fine and hot gas etc was all fine, all the ice dropped from each cube,pressures are all fine as well. 2 weeks down the line i got called back again and find the same problem a mass build up of ice covering all the cubes. Just wondering if anyone has had a similar problem, because everything does its job when i am there i am a bit stumped as to why it is doing it every 2-3 weeks. Maybe ice thickness stat playing up? The defrost timers on these are the standard ones you find on Bremas etc, is there a way to increase the defrost time? I have had a similar problem in the past with a Scotsman but i managed to increase the defrost time using the dip switches and its been running fine since.
Secondly i have condemned a copeland scroll compressor, 3 phase, Mod - ZB21KDE - TFD - 524. The compressor is only a few years old, was making a lot of noise and wasnt pumping, its been a long time since i looked at a 3 phase comp, phase to phase on the incoming breaker i was reading
390V,397V,384V, and phase to neutral 224V,235V,216V, do these readings seem quite low and mis - matched or are they normal? Just wondering if it could be a factor(216V seems low). The readings are the same on the compressor as well.
And lastly does anybody have any parameters/instructions for a Gram Controller on a Gram 2 door bench fridge Mod - K1407CSHADL (cannot find anything on the net)
Sorry to bombard you with all this, any help will be much appreciated, thanks in advance :D