Scotsman NM1250 Manual de Serviço

INTRODUCTIONTo the owner or user: The service manual youare reading is intended to provide you, and themaintenance or service technician, with theinfo

COMPONENT DESCRIPTIONControl Box: Contains the electrical controlsthat operate the machine.Low Pressure Cut Out: A manual resetswitch set to shut th

COMPONENT DESCRIPTION: Control BoxContactor: A definite purpose contactorconnecting the compressor to the powersupply.Circuit Board: Controlling the

COMPONENT DESCRIPTIONEvaporator: A refrigerated vertical tube filledwater and containing a water seal and auger.Auger: A solid stainless steel doubl

ELECTRICAL SEQUENCERefer the wiring diagram as needed.If the machine is switched off at the masterswitch, but is otherwise ready to go, switchingthe m

OPERATIONWaterWater enters the machine through the 3/8"male flare at the rear of the cabinet, goes tothe water reservoir which it enters through

OPERATION: RefrigerationBeginning at the compressor, the refrigerant502 is compressed into a high temperaturegas. The discharge line directs this gas

MAINTENANCE AND CLEANING /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

////////////////////////////WARNING////////////////////////////Disconnect electrical power beforebeginning.///////////////////////////////////////////

In some installations the water supply to theicemaker will be so concentrated withdissolved minerals, (such as calciumcarbonate) that as ice is made,

SERVICE DIAGNOSIS: Condition - No Ice Being ProducedSTATUS: NOTHING OPERATESA. Check: Voltage to the unit, restore it if there is none. Compare to the

FOR THE INSTALLERThe NM1250 is designed to fit the followingScotsman storage bins:B590 and extensions (with bin top KBT18)HTB500 or BH500BH800 using b

SERVICE DIAGNOSIS: Condition - No Ice Being ProducedSTATUS: NOTHING OPERATESH. Check: The gear motor, if it will not run, the compressor will not run.

STATUS: GEARMOTOR OPERATES, COMPRESSOR DOES NOTA. Check the compressor relay.The relay is on the circuit board, if it does not supply power to the con

SERVICE DIAGNOSIS: Condition - Low Ice ProductionSTATUS: EVERYTHING IS OPERATINGA. Check the air cooled condenser for dirt. Clean as required. Check

WATER RESERVOIR1. Shut off the water supply to the icemaker.2. Remove front panel and reservoir cover.3. To remove float only, pry the mountingflanges

REMOVAL AND REPLACEMENT: Bearing And BreakerNote: Removal of the auger, water seal,evaporator and gearmotor must begin at thetop of the assembly.To Re

To Remove the Auger:Turn off the water to the machine, and unclipthe evaporator drain hose, pull it down anddrain the evaporator into the bin or a con

/////////////////////////////WARNING////////////////////////////Disconnect the electrical power to themachine at the building source BEFOREproceeding

To Replace the Evaporator:(Assuming all the steps for removal of thethrust bearing, breaker, auger, and water sealhave been performed.)1. Discharge th

To Remove and Repair the GearmotorAssembly:(Assuming that the procedures throughremoval of the water seal have beenperformed.)1. Remove the electrical

REMOVAL AND REPLACEMENT: GearmotorWATER SHEDSEALCENTRIFUGALSWITCHDRIVE MOTORBEARINGSEAL1ST GEAR ANDBEARINGSGASKETGEARCASE2ND GEAR ANDBEARINGSGEARCASEC

Installation Limitations:This ice system is designed to be installedindoors, in a controlled environment:Min MaxAir Temperature 500F 1000FWater Tempe

///////////////////////////////////////////////////////////////////////WARNING//////////////////////////////////////////////////////////////////These

Water Level1. Unplug “water sen” connector from controlboard.2. Plug “water sen” connector from Scotsmantester into circuit board.a. Move “water” sw

FOR THE INSTALLERLocationAfter uncrating and inspection, theunit is ready for installation. It isimportant that the machine beinstalled in a location

KSNM30 STACKING KIT INSTRUCTIONSThe purpose of the this kit is to connect the icelevel controls from the bottom machine to anadditional circuit board

FOR THE PLUMBERCONFORM TO ALL APPLICABLE CODESWater InletAir Cooled Models: The recommended watersupply is cold water. Use 3/8" O.D. coppertubin

FOR THE ELECTRICIANCONFORM TO ALL APPLICABLE CODESThe electrical power to the unit is suppliedthrough the junction box at the rear of themachine.Check

FOR THE INSTALLER: Final Check List1. Is the ice system installed indoors ina location where the air and watertemperatures are controlled, and whereth

START UPPre-Start Inspection1. Remove the front, and left side servicepanels.2. Check that the styrofoam shipping blocksunder the gearmotor, on top o