Scotsman NME454 Manuel d'utilisateur

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

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

CONTROL BOX COMPONENTSContactor: A definite purpose contactorconnecting the compressor to the power supply.AutoSentryÔ Control BoardThe control board

ELECTRICAL SEQUENCE:There are 7 indicator lights on the control board:·WTR-OK (Water OK). Green. Normal =Glowing. Glows when there is water in therese

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

OPERATION: RefrigerationBeginning at the compressor, the refrigerant iscompressed into a high temperature gas. Thedischarge line directs this gas to t

NME454, 654 & FME504, 804January 2007Page 16OPERATION: PerformanceTypical Low Side Pressure·Air Cooled: 34 - 38 PSIG·Water Cooled: 32 PSIGTypical

CLEANING & SANITIZINGA Scotsman Ice System represents a sizable investment of time and money in any company’s business.In order to receive the bes

1. The bin control is a device that senses light,therefore it must be kept clean so it can “see”. Atleast twice a year, remove the bin control sensors

NME454, 654 & FME504, 804January 2007Page 19Clean the air cooled condenser.The air flow on this model is from front to back, sothe inside of the m

FOR THE INSTALLERThese machines fit the following Scotsmanproducts, check sales literature for other possiblecombinations:·SB480 and extensions (with

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

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

NME454, 654 & FME504, 804January 2007Page 22SERVICE DIAGNOSISSymptom Possible Cause Probable CorrectionNo ice is made, nothing operates Unit off d

NME454, 654 & FME504, 804January 2007Page 23SERVICE DIAGNOSISSymptom Possible Cause Probable CorrectionWater Leak Drain plugged up Clean out drain

NME454, 654 & FME504, 804January 2007Page 24CONTROL SYSTEM DIAGNOSTICSThe control system consists of:·Control Board·Water Sensor·Ice Sensors·High

BIN CONTROLS (Ice Level Sensors)1. Disconnect electrical power.2. Remove front panel.3. Remove control box cover.4. Locate ice chute, at the base of t

NME454, 654 & FME504, 804January 2007Page 26REMOVAL AND REPLACEMENT: Bearing And BreakerNote: Removal of the auger, water seal,evaporator and gear

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 Water Seal:(Assuming all steps to remove the auger havebeen performed.)1. The gearmotor/evaporator assembly will have tobe exposed.2. Re

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

NME454, 654 & FME504, 804January 2007Page 3*Bin Top Kit RequiredSAMPLE BIN AND MACHINE COMBINATIONSFME804 ON BH550*NME654 ON BH801*The Nameplate i

To Check the Motor:1. Remove wires from terminals 1 and 2.2. Use an ohmmeter to check for continuity. Ifthere is none, replace the motor only. If ther

NME454, 654 & FME504, 804January 2007Page 31REFRIGERATION SYSTEM SERVICEGeneral: This ice machine uses R-404A refrigerantand polyolester oil. Do N

NME454, 654 & FME504, 804January 2007Page 32WHAT TO DO BEFORE CALLING FOR SERVICEIf the machine is off, not making ice:1. Check the water supply t

FOR THE INSTALLERLocation:Install the machine be installed in a location whereit has enough space around it to be accessible forservice. A minimum of

NME454, 654 & FME504, 804March 2006Page 5FOR THE INSTALLER: LocationTWO UNITS ON ONE BINALLOW ROOMFOR AIRCIRCULATIONAND SERVICEACCESSALLOW AIR SPA

FOR THE PLUMBERCONFORM TO ALL APPLICABLE CODESWater InletAir Cooled Models: Use38" O.D. copper tubing toconnect cold potable water to the38"

FOR THE ELECTRICIANCONFORM TO ALL APPLICABLE CODESConnect the electrical power to the machine to thewires in the junction box at the rear of the machi

FOR THE INSTALLERFinal Check List1. Is the ice system installed indoors in alocation where the air and watertemperatures are controlled, and wherethey

INITIAL START UPPre-Start Inspection1. Remove the front and side service panels.2. Check that any shipping blocks have beenremoved.3. Inspect the inte