Scotsman NU150,NU220,NU100,NU300 Service Manual
SERVICE MANUAL
NU100/150/220/300
Part Number 99300407-01 Version: A
NU Undercounter Ice Machine Service Manual Table of Content
s
1
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
2
NU Under
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ow 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
www.scotsman-china.com
NU series service part list is provided
separately with this manual.
Model and Serial Number
Model Numbers
Serial numbers
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 14 06
000001
Serialidentifier
Month
Yea r
Seriesname
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
3
NU Under
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Sepec
ifi
cations
NU100/150 Specification
Water Temperature
NU100
Air Temperature
F 50° 60° 70° 90°
℃ 10° 15° 21° 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
NU150
Air Temperature
F 50° 60° 70° 90°
℃ 10° 15° 21° 32°
50° 176 lbs
10° 80 kg
70° 150 lbs
21° 68 kg
90° 106 lbs
32° 48 kg
100° 88 lbs
38° 40 kg
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
4
NU Under
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Sepec
ifi
cations
NU100/150 Size
With Short Foot With High Foot
5
NU Under
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Sepec
ifi
cations
NU220/300 Specification
Water Temperature
NU220
Air Temperature
℉
50° 60° 70° 90°
℃
10° 15° 21° 32°
50° 242 lbs
10° 110 kg
70° 220 lbs
21° 100 kg
90° 154 lbs
32° 70 kg
100° 132 lbs
38° 60 kg
Water Temperature
NU300
Air Temperature
℉
50° 60° 70° 90°
℃
10° 15° 21° 32°
50° 308 lbs
10° 140 kg
70° 293 lbs
21° 133 kg
90° 220 lbs
32° 100 kg
100° 180 lbs
38° 82 kg
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
NU220*A Air Cooled 4.5 10 19 9 650*690*870 65
NU300*A Air Cooled 5 10 19 8 650*690*1004 65
6
NU Undercounter Ice Machine Service Manual Specification
s
NU220 Size
7
NU Undercounter Ice Machine Service Manual Specification
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NU300 Size
8
NU Undercounter Ice Machine Service Manual Overview and Installatio
n
Overview and installation
This manual is provided the instruction in
installation, start-up, operation, maintenance,
cleaning and each operation procedure for
Scotsman NU series ice machine.
Safety instruction
In order to ensure the machine working
normally in long term, please read the manual
carefully and implement strictly before
installation. The producer is not responsible for
any damage or body injury due to ignoring the
safety instructions. If there is any doubt, please
contact the local dealer.
Installation requirements
Please ensure the following items are met
during you determining the installation location:
y Power source: the power switch for the ice
machine should be hand reachable, ensure
that the power supply reliable grounded.
y Water supply: the water supply switch
should be hand reachable.
Water drain: be sure that the drain pipe has
3cm drop per meter.
In order to reach its high performance and
ensure its durability, please pay attention to the
following items:
Operating parameters Lowest Highest
Ambient temperature
10C
(50F)
40C
(100F)
Water inlet temperature 5C (40F) 35C(90F)
Water inlet pressure
1 bar
gauge
5 bar
gauge
Maximum power supply
variation based on the
nameplate
-10% +10%
Orientation and level adjustment
In order to get good ventilation and heat
radiation, the distance between the machine
and the wall, etc. should be more than 150mm.
Don’t hang curtain or pile any goods around the
machine to avoid overheat caused by bad
ventilation, be sure there is no heat source
(such as stove, oven, etc.) around the machine
and the working environment of the ice maker
should not be over humidity.
Before use, install the four supplied legs into
leg acceptor on bottom side of unit base, Level
the unit in both the left to right and front to rear
directions.
Note：
This ice machine is only designed for indoor
installation. For the loss or damage caused by
exceeding the following limited temperature or
involved in the security claims, it is beyond the
general finite warranty clause of Scotsman
producer.
Note：
In order to avoid any infection on the user, the
water for making ice should be the potable
water. If needs, please install water filter or
water processor.
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