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Type: Posts; User: DoctorIce

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  1. Replies
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    Weil McLain CGM-8

    Sorry, ice machines are my field, at my mother's the boiler heats the 2nd floor fine but the first floor is erratic. What happens is when the boiler flames come on the discharge pipes heat instantly...
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    You can tap in the loose grids with a rubber...

    You can tap in the loose grids with a rubber mallet or pull them out if they are very loose. I had one customer who managed to repair the evaporator
    on their own with some sort of brown epoxy or...
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    1,280

    It's the bin thermostat.

    It's the bin thermostat.
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    Jon Bailey of Manitowowoc is a regular...

    Jon Bailey of Manitowowoc is a regular contributor here. I'm sure he will get a hold of you.
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    It's a whirlpool, same as KitchenAid or others. ...

    It's a whirlpool, same as KitchenAid or others. Scotsman tech support should have the ohm readings. Just say it's a Scotsman and they will help.
    1-800-Scotsman
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    You want to make sure the water valve is not...

    You want to make sure the water valve is not leaking thru. You can pull the hose off after fill or check the sump full light on the board.
    If the sump full light is always on you either have a...
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    The posted cycle times are very optimistic. If...

    The posted cycle times are very optimistic. If the water valve isn't leaking thru you can block part of the gap on the float with cork insulation (as per factory) or put a can of pop (no paper...
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    The Scotsman CME machines have a default freeze...

    The Scotsman CME machines have a default freeze mode that bypasses the very finicky thermistor. You turn the machine off, wait 1 minute, then remove the thermistor from the plug on the controller. ...
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    You could unplug the water pump during freeze to...

    You could unplug the water pump during freeze to both check the freeze pattern and any incoming water problem.
  10. You could use an evaporator control or delay...

    You could use an evaporator control or delay timer with the Scotsman CM
    harvest motor timer to act as the ice thickness control. The grid could be a major problem. We had one but I haven't seen it...
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    What I do is set the delay timer to 1 sec and...

    What I do is set the delay timer to 1 sec and crank the timer initiate switch down a few turns. When the ice is the correct thickness I turn the timer initiate switch higher until I hear it click. ...
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    There is an overheat safety that when it breaks...

    There is an overheat safety that when it breaks continuity sticks the machine
    in perpetual freeze. I remove this safety on sight. I believe it's on the evaporator return line. You can just...
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    Get rid of the safety by putting a 50k or so...

    Get rid of the safety by putting a 50k or so resistor to the sensor wires.
    That safety was eliminated because it caused more trouble than it saved.
  14. If you engage the contactor by hand and the...

    If you engage the contactor by hand and the compressor stays on the problem will be on the pc card, ( check the leds for the compressor light on) or the contactor coil likely.
  15. If the contactor engages and the compressor...

    If the contactor engages and the compressor doesn't come on you either have a problem with the compressor electrics or the compressor itself. If you provide the serial # there is a 5 year warranty...
  16. Thread: hoshi

    by DoctorIce
    Replies
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    2,174

    The low side pressure is a bit low at the start. ...

    The low side pressure is a bit low at the start. I would expect 300/60 at the start though 270/30 sounds very normal at the end. What are the defrost pressures?
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    There is also a low water safety. Sorry, I don't...

    There is also a low water safety. Sorry, I don't actually wake up until noon.
  18. Replies
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    1,318

    High gear motor amps often disappear with a good...

    High gear motor amps often disappear with a good acid wash. Follett has an
    excellent help line at 1-800-523-9361. If you get a chance their service school
    is very good also.
  19. Replies
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    3 was low discharge temp. You can put in a 50K...

    3 was low discharge temp. You can put in a 50K resistor and forget about the thermistor altogether. This is as per factory.
  20. Replies
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    Why would you want to change from...

    Why would you want to change from electro-mechanical controls? Scotsman, for example, had a very reliable electro-mechanical ice machine with the CM series. They went digital and came up with the...
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    I have been dealing exclusively with ice machines...

    I have been dealing exclusively with ice machines for over 30 years and never go more than 2 years without attending a service school whether it be Hoshizaki, Manitowoc, Scotsman, Follett, or...
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    The newest Hoshi bin stat has a heavier cap tube...

    The newest Hoshi bin stat has a heavier cap tube and the holder has a latex tube to protect the junction of the bulb and cap tube. This junction is where I've found 90% of the breaks caused by...
  23. A much easier solution would be to buy the...

    A much easier solution would be to buy the Hoshizaki IM series ice machine which is a Kold-Draft clone. This model is available, last I heard, in Asia and Europe but not North America.
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    When this first happened I tried all sorts of...

    When this first happened I tried all sorts of glues and epoxies to repair the evaporator with no luck. A customer of mine managed to fix one with a brown substance that looked like putty but he...
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    A good example of the death of a Cornelius by...

    A good example of the death of a Cornelius by evaporator separation. The evaporator looks to me like a typical six year old Cornelius. Thank goodness they're almost all gone now.
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    These machines can be quite erratic. The board...

    These machines can be quite erratic. The board is the likely candidate as I've changed 10 boards for every water level control. If you are not getting any error codes and the machine is shutting...
  27. Thread: IACS227

    by DoctorIce
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    If it's not the evaporator thermistor then check...

    If it's not the evaporator thermistor then check air flow. They had a real problem if the lower section wasn't sealed so that all the air flows out the front.
    I've had a lot of bad thermistors and...
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    The AM-100 has real problems with water flow. ...

    The AM-100 has real problems with water flow. You basically have to remove the water distribution plate, pull the plugs, and rinse out the crap inside. Also the water pump has a thrust washer that...
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    The CME series harvests on the water level sensor...

    The CME series harvests on the water level sensor dropping down to where the gap in the stem is read by the infra-red sensor on the control. If water is leaking through the solenoid valve you will...
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    I changed both TXV a few weeks before as one had...

    I changed both TXV a few weeks before as one had failed and the factory
    said change both. The receiver was quite hot which suggested a lack of liquid refrigerant. No ice was being formed and the...
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    The customer got another company to look at the...

    The customer got another company to look at the machine. According to the customer they changed two solenoid valves and the machine was fine. I still can't reconcile the low pressures with changing...
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    Assuming you are not losing water from the...

    Assuming you are not losing water from the curtain or the hoses to the pump you can raise the water level in the sump by putting a piece of hose on the standpipe. I had to do this on one machine...
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    Hoshizaki KM-1600SRH3 low pressures

    I don't get to work on remotes very often (too much water in Ontario) and this machine is running 20# on the low side and 150# on the high side. There appears to be no leak anywhere. What else...
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    If the machine sprays fine with water it sounds...

    If the machine sprays fine with water it sounds like the inlet water solenoid valve isn't allowing enough water through. You can take the top off and see the incoming water during harvest. It needs...
  35. Thread: R502

    by DoctorIce
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    1,657

    Ballpark is 80% but why aren't you using 408A so...

    Ballpark is 80% but why aren't you using 408A so you don't have to change the oil?
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    You really need a voltmeter to check that there...

    You really need a voltmeter to check that there is power to the delay timer
    from the timer initiate control. If there is you could have a defective delay timer or the ^*&()&*( evaporator overheat...
  37. Thread: Scotsman

    by DoctorIce
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    1,526

    The water sensor is shutting the machine off...

    The water sensor is shutting the machine off because the water fill is not fast enough to satisfy the controller. I haven't had a water level sensor fail yet, but I've changed a lot of water...
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    Besides the bin eyes there are eyes in the float...

    Besides the bin eyes there are eyes in the float sensor that need to be cleaned.
    A Qtip with a little acid is good. Be careful not to scratch the lenses. As always with this machine the controller...
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    I have been doing Ice Machine only repair since...

    I have been doing Ice Machine only repair since 1991. Before that I was general manager of a Kold-Draft distributor and gave technical advice on fixing them for 11 years. When Kold-Draft went under...
  40. I checked out their web site. It looks like they...

    I checked out their web site. It looks like they are just going to make 4 models.
    The bagger with a heat seal is similar to one we sold in the early 80's. We didn't sell very many at all. The...
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    Just checking that you know there's a 5 year...

    Just checking that you know there's a 5 year warranty on the evaporator. I've changed a couple under warranty. I believe, if memory serves, you get 4.5 hrs.
    labor also.
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    I've installed a number of these machines but...

    I've installed a number of these machines but I've never used the delay feature.
    There is no refrigeration in the bin to keep the ice frozen. The machine will make new cubes when the sensor reads...
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    Just for reference the curtain light is not...

    Just for reference the curtain light is not reliable as to the state of the bin switch. You are supposed to disconnect the bin switch leads and test with a goo ohmmeter. It should read fully open...
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    To change the bin switch I would strongly...

    To change the bin switch I would strongly recommend that you push down the tab with a small screwdriver then lightly pry the switch out to the right. If you break the tab the new switch won't hold...
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    A model # would be good. Two things come to...

    A model # would be good. Two things come to mind. Either the automatic agitation isn't working and the ice clumps up from sitting too long or the ice is too soft and not being squeezed into...
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    No one from the factory has ever mentioned...

    No one from the factory has ever mentioned cleaning the board. It's so bloody sensitive that I wouldn't put any fluid on it. You could blow the dust off. That should be harmless.
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    The warranty doesn't care how any owners the...

    The warranty doesn't care how any owners the machine has had. Phone Manitowoc at 1-800-247-4520 for warranty verification. If it is out of warranty try unplugging the machine or the board for 5...
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    It's the board. They're pretty expensive. Hope...

    It's the board. They're pretty expensive. Hope it's under the 3 year warranty.
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    If the dump valve has power to it after the...

    If the dump valve has power to it after the initial first minute of the cycle has completed and the harvest light isn't on you have a bad board. If the harvest light is on right away you have either...
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    The Scotsman CME machines will tend to start...

    The Scotsman CME machines will tend to start where they left off when the off switch is hit. So sometimes you start in freeze and sometimes you go through a 5 minute maximum harvest.
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