SERVICE MANUAL - NU100/150/220/300 - Version A - Ice Machine Service

Oct 23, 2026

Upload by noah

Service manual for Scotsman NU Undercounter Ice Machines covering installation, start-up, operation, maintenance, and cleaning procedures. Includes safety instructions, positioning and leveling adjustment guidance, water supply and drainage connection, and power supply connection steps plus a final checklist. Provides operating check and ice machine adjustment workflow, explains freezing and harvest cycles, and describes key components with wiring diagram and troubleshooting table. Also includes maintenance and cleaning instructions for the refrigeration and water systems, and winterizing procedures.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages28

Reading Time1 h 11 min

AccessFree to download

How to use this manual

Model and serial number

Specifications

NU100/150 Specification

NU220/300 Specification

Overview and installation

Safety instructions

Position and level adjustment

Water supply and drainage connection

Power supply connection

Final check list

Start-up

Operating check

Ice machine adjustments

How the ice maker works

Freezing cycle

Harvest cycle

Components Description

Wiring diagram

Trouble shooting table

MAINTENANCE & CLEANING INSTRUCTION

Maintenance of refrigeration system

Water system cleaning

Winterizing Procedures

SERVICE MANUAL NU100/150/220/300 Part Number 99300407-01 Version: A NU Undercounter Ice Machine Service Manual Table of Contents | Tables of Content | Page | | --- | --- | | How to use this manual | 2 | | --- | --- | | Model and serial number | 2 | | Specifications | 3-7 | | --- | --- | | Overview and installation | 8 | | --- | --- | | Safety instructions | 8 | | Position and level adjustment | 8 | | Water supply and drainage connection | 9 | | Power supply connection | 9 | | Final check list | 10 | | Start-up | 11 | | --- | --- | | Operating check | 12 | | Ice machine adjustments | 13 | | How the ice maker works | 14 | | --- | --- | | Freezing cycle | 14-15 | | Harvest cycle | 16-17 | | Components Description | 18-20 | | --- | --- | | Wiring diagram | 21 | | --- | --- | | Trouble shooting table | 22-23 | | --- | --- | | MAINTENANCE & CLEANING INSTRUCTION | 24 | | --- | --- | | Summary | 24 | | Maintenance of refrigeration system | 24 | | Water system cleaning | 24-25 | | Winterizing Procedures | 25 | NU Undercounter Ice Machine Service Manual How to use this manua How to Use this manual This manual is provided as an aid to the service technician in installation, operation, and maintenance of the ice machines. This manual can also assist the service technician to troubleshoot and diagnose most of the problems that may occur with the machine. Most aspects of the NU Series machines are covered in this manual, however, if you encounter any conditions not addressed herein, please contact the Scotsman Technical Service Department for assistance. You can contact the Scotsman Technical Services Department in the following ways: Scotsman Ice systems (Shanghai) Co. LTD Room 2503, Building NO.2 , NO.20 of Xu Hong Middle Road, Xuhui District, Shanghai, China Telephone Numbers: +86 21 61313200 Service hotline: +86 400 630 0076 [service@scotsman-china.com](service@scotsman-china.com)[ ](service@scotsman-china.com)[www.scotsman-china.com](www.scotsman-china.com) NU series service part list is provided separately with this manual. Model and Serial Number Model Numbers NU 15 0 H A 2 Design change number A=Air Cooled W=Water Cooled H=Half Cube; F=Full Cube Power 0 = 220V 50Hz; 24h Ice Capacity (21 ℃ Air/10 ℃ Water) 15*10=150 lbs Series Name Serial numbers NU 14 06 000001 Serial identifier Month Year Series name The serial number includes 12 numbers; the front 2 letters are the series name, the next 2 numbers are referring to the year the machine was manufactured, then the 2 month codes, the final six numbers are the serial identifier. NU Undercounter Ice Machine Service Manual Sepecifications NU100/150 Specification Air Temperature Water Temperature NU100 | F
℃ | 50°
10° | 60°
15° | 70°
21° | 90°
32° | | | --- | --- | --- | --- | --- | --- | | 50° | 121 | | | | lbs | | 10° | 55 | | | | kg | | 70° | 99 | | | | lbs | | 21° | 45 | | | | kg | | 90° | | | 70.4 | | lbs | | 32° | | | 32 | | kg | | 100° | | | | 59.4 | lbs | | 38° | | | | 27 | kg | Water Temperature | Air Temperature | F
℃ | 50°
10° | 60°
15° | 70°
21° | 90°
32° | | | --- | --- | --- | --- | --- | --- | --- | | | 50°
10° | 176
80 | | | | lbs
kg | | | 70°
21° | 150
68 | | | | lbs
kg | | | 90°
32° | | | 106
48 | | lbs
kg | | | 100°
38° | | | | 88
40 | lbs
kg | NU150 | MODEL | Condenser | Minimum
Circuit
Ampacity
(A) | Fuse
(A) | Water Consumption
(Gal) | Power Consumption
(KWH) | Size mm
(Width*Depth*Height) | Net
Weight
(kg) | | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | 32℃ Air/21 ℃ Water 100lbs Ice | | | | | NU100*A | Air Cooled | 3.5 | 10 | 32 | 12.6 | 600*610*770 | 50 | | NU150*A | Air Cooled | 4 | 10 | 20 | 8.5 | 600*610*770 | 50 | NU Undercounter Ice Machine Service Manual NU100/150 Size With Short Foot Sepecifications Wit

FAQs

What information is required to identify the NU series ice machine model and serial number?

The model and serial identification section explains how to read the design change and series information, and states that the serial number includes 12 numbers with encoded year and month codes plus a serial identifier.

What does the manual cover during installation and start-up?

It provides safety instructions, positioning and leveling adjustment, water supply and drainage connection, power supply connection, and a final check list. It also includes start-up guidance such as an operating check and ice machine adjustments.

How does the ice-making process work according to this manual?

The manual describes the freezing cycle and the harvest cycle, outlining the operational stages used by the ice maker.

Oct 23, 2026

Upload by noah