Scotsman NSE654 Manual de servicio

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

COMPONENT DESCRIPTION: Control BoxContactor: A definite purpose contactorconnecting the compressor and the remotecondenser fan motor to the power supp

ELECTRICAL SEQUENCEThere are 7 indicator lights on the control board:·WTR-OK. Water OK. Normal = Glowing. Glowswhen there is water in the reservoir.·P

OPERATION: WaterWater enters the machine through the 3/8" maleflare at the rear of the cabinet, flows to the waterreservoir which it enters throu

NSE654January 2000Page 13OPERATION: RefrigerationBeginning at the compressor, the refrigerant iscompressed into a high temperature gas. Thedischarge l

NSE654January 2000Page 14TECHNICAL CHARACTERISTICSTypical Low Side Pressure·32 - 34 PSIG, less in cooler ambients, greater in hot ambientsTypical Disc

MAINTENANCE AND CLEANINGA Scotsman Ice System represents a sizable investment of time and money in any company’s business. Inorder to receive the best

NSE654January 2000Page 161. The bin control uses devices that sense light,therefore they must be kept clean enough so thatthey can “see”. At least twi

BEARING MAINTENANCEThe bearing in the breaker should also be checkedat least two times per year.A. Check the bearing by:·removing the ice chute cover·

In some areas, the water supply to the ice makerwill contain a high concentration of minerals, andthat will result in an evaporator and augerbecoming

NSE654January 2000Page 19SERVICE DIAGNOSISSymptom Possible Cause Probable CorrectionNo ice is made, nothing operates Unit off due to no power Restore

FOR THE INSTALLERInstallation Limitations:This ice system is designed to be installed indoors,in a controlled environment:Min. Max.Air Temperature 500

NSE654January 2000Page 20SERVICE DIAGNOSIS:Symptom Possible Cause Probable CorrectionWater Leak Drain plugged up Clean out drainTubing cracked Replace

CONTROL SYSTEM DIAGNOSTICSThe control system consists of:·Control Board·Water Sensor·Ice Sensors·High Pressure Cut Out·Low Pressure Cut OutIf the unit

WATER RESERVOIR1. Shut off the water supply to the icemaker.2. Remove front panel and reservoir cover.3. Disconnect water inlet line from float valve.

REMOVAL AND REPLACEMENT: Bearing And BreakerNote: Removal of the auger, water seal, evaporatorand gearmotor must begin at the top of theassembly.To Re

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

To Remove the WaterSeal:(Assuming all steps toremove the auger havebeen performed.)1. The gearmotor/evaporator assemblywill have to be exposed.2. Remo

To Replace the Evaporator:(Assuming all the steps for removal of the thrustbearing, breaker, auger, and water seal have beenperformed.)1. Recover the

NSE654January 2000Page 27ICE SWEEPAUGEREVAPORATORBREAKERBEARINGWATERSEALRETAINING RINGDRIP PANGASKETWATER SHEDGEARMOTORASSEMBLYSEAL(S)O-RINGCAP SCREWO

To Remove and Repair the GearmotorAssembly:(Assuming that the procedures through removal ofthe water seal have been performed.)1. Remove the electrica

REFRIGERATION SYSTEM SERVICENSE654January 2000Page 29General: This ice machine uses R-404A refrigerantand polyolester oil. Do NOT use mineral oil in t

LocationAfter uncrating the machine, and inspecting it forfreight damage, the unit is ready for installation.It is important that the machine be insta

FOR THE PLUMBERCONFORM TO ALL APPLICABLE CODESWater InletAir Cooled Models: Connect a coldpotable water supply to the 3/8" male flarefitting at t

FOR THE ELECTRICIANCONFORM TO ALL APPLICABLE CODESThe electrical power to the unit is supplied throughthe junction box at the rear of the machine.Chec

FOR THE INSTALLERFinal Check List1. Is the ice system installed indoors in a locationwhere the air and water temperatures arecontrolled, and where the

START UPPre-Start Inspection1. Remove the front panels.2. Check that the styrofoam shipping blocks havebeen removed.3. Inspect the interior of the mac

COMPONENT DESCRIPTIONControl Box: Contains the electrical controls thatoperate the machine.High Pressure Cut Out Switch: An automaticreset switch sens

COMPONENT DESCRIPTIONEvaporator: A refrigerated vertical tube filled withwater and containing a water seal and auger.Auger: A solid stainless steel do