Scotsman NM1250 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
informtion needed to install, start up, clean,
maintain, and service this ice system.
The NM1250 is a modular ice system that
produces up to 1000 lbs. of nugget ice in 24
hours at 90
0
F. air and 70
0
F. water.
It features: front service for the evaporator,
gearmotor, control box, water reservoir and
bincontrol; stackability by use of kit
KSTACK30; electronic circuitry for monitoring
ice and water level; a thermostatic expansion
valve; and R502 as the refrigerant.
TABLE OF CONTENTS
For the Installer
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Stacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
For the Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance & Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Removal and Replacement
Water Reservoir & Bin Control . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Thrust Bearing and Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Water Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Electronic Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow
paper.
NM1250
February, 1989
Page 1
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Podsumowanie treści

Strona 1 - INTRODUCTION

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

Strona 2 - FOR THE INSTALLER

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

Strona 3

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

Strona 4

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

Strona 5 - FOR THE INSTALLER: Stacking

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

Strona 6 - FOR THE PLUMBER

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

Strona 7 - FOR THE ELECTRICIAN

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

Strona 8

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

Strona 9 - START UP

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

Strona 10 - COMPONENT DESCRIPTION

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

Strona 11

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

Strona 12

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

Strona 13 - ELECTRICAL SEQUENCE

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

Strona 14 - 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 15 - OPERATION: Refrigeration

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

Strona 16 - MAINTENANCE AND CLEANING

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

Strona 17 - MAINTENANCE

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

Strona 18 - MAINTENANCE: Auger

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

Strona 19 - NOTHING OPERATES

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

Strona 20

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

Strona 21 - STATUS:

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

Strona 22 - EVERYTHING IS OPERATING

REMOVAL AND REPLACEMENT: GearmotorWATER SHEDSEALCENTRIFUGALSWITCHDRIVE MOTORBEARINGSEAL1ST GEAR ANDBEARINGSGASKETGEARCASE2ND GEAR ANDBEARINGSGEARCASEC

Strona 23

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

Strona 24

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

Strona 25

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

Strona 26 - REMOVAL OF THE WATER SEAL

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

Strona 27 - REPLACING THE WATER SEAL

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

Strona 28 - February, 1989

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

Strona 29

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

Strona 30 - CIRCUIT BOARD TESTING

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

Strona 31

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

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