Scotsman NME1250 Instrukcja Obsługi

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INTRODUCTION
To the owner or user: The service manual you are
reading is intended to provide you, and the
maintenance or service technician, with the
information needed to install, start up, clean,
maintain, and service this ice system.
The NME1250 features: front service for the
evaporator, gearmotor, control box, water reservoir
and bin control; electronic circuitry for monitoring
ice and water level; a thermostatic expansion
valve; and HP62 as the refrigerant.
TABLE OF CONTENTS
FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FOR THE INSTALLER: Environmental Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
FOR THE INSTALLER: Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
MAINTENANCE: Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SERVICE DIAGNOSIS: Condition - No Ice Being Produced . . . . . . . . . . . . . . . . . . . . . . . . 18
SERVICE DIAGNOSIS: Condition - Low Ice Production . . . . . . . . . . . . . . . . . . . . . . . . . . 21
REMOVAL AND REPLACEMENT: Water Reservoir & Bin Control . . . . . . . . . . . . . . . . . . . . 22
REMOVAL AND REPLACEMENT: Bearing And Breaker . . . . . . . . . . . . . . . . . . . . . . . . . 23
REMOVAL AND REPLACEMENT: Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
REMOVAL AND REPLACEMENT: Water Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
REMOVAL AND REPLACEMENT: Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REMOVAL AND REPLACEMENT: Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
REFRIGERATION SERVICE: HP62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
CIRCUIT BOARD TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow paper.
This manual was printed on recycled paper.
Keep it for future reference.
Note this symbol when it appears.
It marks a potential hazard.
NME1250
August 1993
Page 1
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Podsumowanie treści

Strona 1 - INTRODUCTION

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

Strona 2 - )257+(,167$//(5

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

Strona 3 - August 1993

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

Strona 4 - FOR THE INSTALLER

ELECTRICAL SEQUENCE: "A" ModelsRefer the wiring diagram as needed.If the machine is switched off at the master switch,but is otherwise ready

Strona 5 - FOR THE PLUMBER

OPERATIONWaterWater enters the machine through the 3/8" maleflare at the rear of the cabinet, goes to the waterreservoir which it enters through

Strona 6 - FOR THE ELECTRICIAN

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

Strona 7

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

Strona 8 - START UP

1. The bin control uses devices that sense light,therefore they must be kept clean enough so thatthey can "see". At least twice a year, remo

Strona 9

In some installations the water supply to theicemaker will be so concentrated with dissolvedminerals, (such as calcium carbonate) that as iceis made,

Strona 10

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

Strona 11 - COMPONENT DESCRIPTION

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

Strona 12 - June 1994

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Strona 13 - OPERATION

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

Strona 14 - OPERATION: Refrigeration

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

Strona 15 - CLEANING & SANITIZING

WATER RESERVOIR1. Shut off the water supply to the icemaker.2. Remove front panel and reservoir cover.3. Disconnect water inlet compression fitting at

Strona 16 - MAINTENANCE

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

Strona 17 - MAINTENANCE: Auger

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

Strona 18 - NOTHING OPERATES

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

Strona 19

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

Strona 20 - STATUS:

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

Strona 21 - EVERYTHING IS OPERATING

REFRIGERATION SERVICE: R-404aTHIS ICE MACHINE USES R-404a (HP62)REFRIGERANT AND POLYOLESTERCOMPRESSOR OIL.DO NOT USE MINERAL OIL IN THISREFRIGERATION

Strona 22

REFRIGERATION SERVICEGeneral Information:Work on the refrigeration system should only bedone when it is certain that the system needsrepair. ••Refrain

Strona 23

Installation Limitations:This ice system is designed to be installed indoors,in a controlled environment:Min. Max.Air Temperature 500F 1000FWater Tem

Strona 24

INSTRUCTIONS FOR USING TESTER, (Optional, order part no. A33942-001)(These instructions assume that the unit will not run, and prior investigation of

Strona 25 - REMOVAL OF THE WATER SEAL

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

Strona 26 - REPLACING THE WATER SEAL

FOR THE INSTALLERLocationAfter uncrating and inspection, the unitis ready for installation. It is importantthat the machine be installed in alocation

Strona 27

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

Strona 28 - REFRIGERATION SERVICE: R-404a

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

Strona 29 - REFRIGERATION SERVICE

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

Strona 30 - CIRCUIT BOARD TESTING

START UPPre-Start Inspection1. Remove the front, and left side service panels.2. Check that the styrofoam shipping blocks underthe gearmotor, on top

Strona 31

COMPONENT DESCRIPTIONControl Box: Contains the electrical controls thatoperate the machine.Low Pressure Cut Out: "A" models only: Amanual

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