Scotsman NDE650 Installation Manual
INTRODUCTION
NDE550 & NDE650
To the own er or user: The ser vice manua l you are
reading is intended to provide you, and the
mainte na nce or serv ic e te c h ni ci a n w i th the
information needed to install, start up, clean,
maintain, and service this ice maker-dispenser.
This ma c hi n e i s a c om b i na ti o n nugget ic e m ake r
and coun te r top dispens e r , w it h the opt i on of wal l
mounting.
The ice making section is equipped with the
followi n g features: electron i c con t rols for bin l ev e l
and low w at er ; thermostatic ex pansion va l ve; front
service for most co m ponent s; and R-404A (HP62)
refrigerant. The ice dispensing section i s a
seamless plastic storage bin, with a stainless steel
rotating vane to sweep the ice into the dispensing
chute.
Table of Contents
FOR THE INSTALLER: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FOR THE INSTALLER: Environmental Limitations . . . . . . . . . . . . . . . . . . . 3
FOR THE INSTALLER: Wall Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . 5
FOR THE INSTALLER: Soda Valve Kit . . . . . . . . . . . . . . . . . . . . . . . . . 6
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
FOR THE INSTALLER: Final Check List . . . . . . . . . . . . . . . . . . . . . . . . 9
INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
COMPONENT DESCRIPTION: Control Box . . . . . . . . . . . . . . . . . . . . . . . 13
ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
OPERATION: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
OPERATION: Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
OPERATION: Ice Vending . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CLEANING and SANITIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
MAINTENANCE AND CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SERVICE DIAGNOSIS: Condition - No Ice Being Produced . . . . . . . . . . . . . . 21
SERVICE DIAGNOSIS: Condition - Low Ice Production . . . . . . . . . . . . . . . . 24
SERVICE DIAGNOSIS: Condition - Poor or No Ice Dispensing . . . . . . . . . . . . . 25
REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFRIGERATION SERVICE: HP62 . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
REFRIGERATION SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CIRCUIT BOARD TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Parts Lists and Wiring Diagrams are printed on
Note this symbol when it appears.
yellow paper in the center of this manual.
This manual was printed on recycled paper.
Keep it for future reference.
April 1997
Page 1
It marks a possible hazard.
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NDE550 & NDE650
FOR THE INSTALLER: Env ironmental Limitations
Installation Limitations
This ice system is designed to be installed indoors,
in a cont r oll e d environm en t.
Minimum Maximum
0
Air Temp 50
Water Temp 40
F. 1000F.
0
F. 1000F.
Water Pressure 20 PSI 80 PSI
Voltage (115v) 104 126
Operating the machine outside of the above
limitations, or ou tdoors, is po tentially da m ag i ng to
the machine; also it is misuse of the machine,
which may void the warranty.
Scotsman Ice Systems are designed and
manufactured w ith the highest regard for safety
and performanc e. They meet or exceed the
standards of UL, NSF, and CUL.
Scotsman assumes no liability or responsibility of
any kind for pr o du c t s ma nu fa c t ur e d by Sc otsman
that ha ve been alt e r ed in any way, including the
use of any pa r t and/or other compon ents not
specifically ap pr oved by Scotsman.
Scotsman reserves the right to make design
chang es and/or improvem ents at any time.
Specifications and design are subject to change
without notice.
CUT AWAY
Service Limitations
Do not install in a location where the top of the
machine is within 6" of a fixed ceiling. Do not install
air cool e d m od el s i n a l ocation wh ere there is le ss
than 6" c learan ce to the left and right of the
cabinet.
CEILING
CUT AWAY
WALL
SPACE
ABOVE
FOR
SERVICE
Water Limitations
An ice machine is a food manufacturing plant; it
takes a raw material, water, and turns it into a food
product, ice. The purity of the water is very
important in obtaining pure ice and in maximizing
product life. This section is not intended as a
complete resource for water questions, but it does
offer these general recommendations:
1. Filt er th e w at er used to produ ce i c e . T ha t i s the
water go i ng to th e " potable" wat er c o nn ec t i on .
Water filters vary greatly in ability and function.
Install one that filters out suspended solids to a
dimension of 5 mi cr on s or sm al l e r . The f i ne r the
filter the better, but finer filters will clog sooner
than course ones. It may be necessary to add a
course filter ah ead of the fi ne filter to pr olong fi lter
life.
2. Chec k wi t h a w at er tr e atment spec ialist for a
water test, and recommendations regarding filters
and treat m en t.
6" SPACE
FOR AIR
(A/C)
Airflow
SPACE
FOR
UTILITIES
6" SPACE
FOR AIR
(AIR COOLED)
April 1997
Page 3
NDE550 & NDE650
FOR THE INSTALLER
Location
After uncrating and insp ection, the unit is ready for
installation. It is important that the machine be
install ed in a location where it has enough space
above an d be hi n d i t for service . Air c o ol e d m od el s
requi r e a minimum of 6 inches to the left an d right
of the machine for air circulation.
Machi ne Stand Installat ion
Tip the stand on its back and install the legs, return
the stand to the upright position. Adjust leg
levelers so that the stand does not "rock".
Counter Top or Machine Stand Installation
The base of the icemaker-dis pe nser must be
sealed to the object it rests upon. Food grade
silastic sealant such as Scotsman part number
19-0529-01 is recommended.
Place a bead of the sealant on the machine stand
or coun te r top to m atch the outs i de edg e of the
cabinet base and sink.
The icemaker-dispenser is heavy: use of a
mechanical hoist is recommended to lift it to the
height required to install it.
Follow the instructions packed with the machine
stand fo r pr op er c on ne ction to the di spenser.
In both counter top and machine stand
installations, wipe off and neatly smooth any
excess sealant. Level the machine stand and
cabinet.
Unpack and install the sink brackets. Fit the sink
assemb l y onto the two si nk bracket s , an d pr e s s
onto th e bead of sealant. Wipe off and neatly
smooth any excess sealant from un der the sink
edge.
SEAL TH E
UNIT TO
THE
COUNTER
OR STAND
April 1997
Page 4
NDE550 & NDE650
FOR THE INSTALLER: Wal l Mount Kit
/////////////////////////////CAUTION///////////////////////////////////
It is recommended that the wall mounting
install ation be done by an experienced contractor .
The weight of the machine when in use may
exceed 350 pounds. The unit should be mounted
on a solid, rigid wall with proper fasteners for that
type of w al l and of adequat e s tr e ng th to support
the weight of the machine when in use.
////// ///////////////////////////////////////////////////////////////////////
Clear an ce between the w all an d the icemake r is a
maximum of 1 inch. Check utility connections first.
The electrical junction box will have to be
removed, and the electrical connection s made
inside the cabinet in compliance with local codes.
The plu m bing conn ections may be made through
the base, or at either side through the pre-punched
holes , us ing standa r d pl u m bi n g pr actices.
Interi or pl u m bi n g l ine s m ust be discon ne cted from
the origi nal connections and plugg ed when routing
through the side or base.
1. Remove machine top. Attach bracket "A" to
machine using (3) nuts, (3) flat washers, (3) lock
washers, and (3) 5/16-18 bolts received with the kit.
X"
7.58"
1" CLEARANCE
BASE
HOLE
SIDE
ROUTING
X = 30" for NDE550
X = 38.6" for NDE650
16"
16"
A
DO NOT LIFT ON SINK
2. Mount brackets "B" and "C" to the wall at the
dimen sions shown for the unit. (hardware for this is
not inc luded).
B
////// // // // // // // // ////////////////// ////////////////// ////////////////// //////
Use fasteners and wall of sufficient strength to
carry the use and weight of the
icemaker-dispenser.
////////////////////////////////////////////////////////////////////////////////
3. Lift unit up and hook bracket "A" over bracket
12"
12"
"B". Slide unit until the two remaining holes are
aligne d an d s e cur e wi t h th e r em a i ni n g ( 2) 1/ 4- 2 0
bolts, flat washers and lock washers.
C
April 1997
Page 5
NDE550 & NDE650
FOR THE INSTALLER: Sod a Valve Kit
Installa t io n Ins t ru c tio ns
Note: C arbonator and carb onate d pr oduct cooling
system are not included (for 115v models only).
Electrical Shock Hazard.
Disconnect electrical
power to the icemaker dispenser before
beginning.
1. Remove cabinet top panel, front panel, and
splash panel.
2. Remove water glass filler lever from machine.
3. Remov e w at er ou tl e t tu be f rom m achine.
4. Remove screws and remove filler plate from the
ice maker dispenser.
5. Remove large pl ug from base of
icemaker-dispenser.
6. Install valve assembly in the ice machine with
two screws through the same holes that held on
the valve cover plate. Install 1-3/8" ID insulation
tube over the syrup and carb onated lines.
7. Route product l ines through the hole in th e base.
8. Make all required connections soda line
connections, usi ng fi el d sup pl i e d m at er i a l s . All
lines should be insulated. A carbonated water
recirculating line is provided and recommended to
insure t ha t hi g h qu al i t y dri nks are dis pe nse d.
9. Install trans fo r m er i n up pe r com p ar tment of
icemaker-dispenser, using screws provided. It may
be necessary to pre-drill holes.
10. Route drink valve assembly electrical leads up
to the transformer.
11. Conne c t wir e leads from th e dr i n k v alves to the
24 volt output side of the transforme r.
12. Locate a 115 volt continuous power source
from within the icemaker control box. Route white
and blac k l ea ds from the 11 5 vol t input sid e of the
trans fo r m er an d connect to th e 11 5 v olt power
source.
13. Turn on po w er an d so da equipment, check
operat i o n an d c h eck for leak s. Adjust valves for
proper m i xture.
115 VOL T
CONNECTION
ATTACH DRINK VALVE
ASSEMBLY HERE
TRANSFORMER
24 VOLTS
SODA VALVES
SODA
LINES
April 1997
Page 6
FOR THE PLUMBER
CONFORM TO ALL APPLICABLE CODES
Water Inlet
Air Cooled Models: The recommended water
supply is clean, cold water. Use 3/8" O.D. copper
tubing, connec t to the 3/8" male flare at the back
of the cabinet. Install a hand valve near the
machine to control the water supply.
Water Treatment: In most areas , a w at er fil t er of
some type will be useful. In areas where the water
is highl y c o nc e nt r ated with mi ne r al s t he wa te r
should be t est ed by a water treat ment special is t,
and the recommendations of the specialist
regard i ng fi l tr a ti o n an d/or treat m en t should be
followed.
Water Cooled Models: A separat e 3/ 8" O. D.
copper l i ne is r ecommend ed , w i th a se pa r ate hand
valve to con tr o l it . It is c o nn ected to a 3/8" FPT
conden s er i nl e t at the back of th e c a bi n et . T he
water pressure to all lines must always be above
20 psig, and below 80 psig.
NDE550 & NDE650
WATER INLET
CABINET
DRAIN
OPTIONAL
WATER
FILTER
Drains
Air Cooled Models: There is one 3/4" FPT dr ain
at the bac k of th e c a bi n et , th e dr a i n li ne is of the
gravity type, and 1/4 inch per foot fall is an
acceptable pitch for the drain tubing. Ther e
should be a vent at the highest point of the drain
line, an d th e i de al dr a i n r ec eptacle wou l d be a
trapped and vented floor drai n. Use only 3/4" rigi d
tubing.
Water Cooled Models: In additi on t o th e ab ove
mentioned drain, a separate condenser drain must
be inst al led. Connect it to the 1/2" c on de nser drain
connection at the back of the cabinet.
WATER IN LET
SHUT OFF
VALVE
VENTED
DRAIN TUBE
FLOOR DRAIN
WATER COOLED D ETAIL
CONDENSER
WATER INLET
April 1997
Page 7
POTABLE
WATER INLET
CABINET
DRAIN
CONDENSER
DRAIN
NDE550 & NDE650
FOR THE ELECTRICIAN
CONFORM TO ALL APPLICABLE CODES
The electrical power to the unit is
suppl ied through th e j un cti o n box at the
rear of the machine.
Check the nameplate (located on the
back panel) for the v o l ta ge
requi r ements, and for the mi nimum
circuit ampacit y. The machine requires
a solid c ha s si s to earth gr ou nd wi r e .
The ice maker should be connected to
its own el e c tr ical circuit so it woul d be
individually fused. Voltage variation
must remain within design limitations,
even under starti ng conditions.
All external wiring mus t conform t o
nation al , state, and lo ca l el ectrical
codes. The use of a licensed
electrician is required to perform the
electr i ca l in s t al la t io n.
ELECTRIC AL
POWER
JUNCTION
BOX
April 1997
Page 8
NDE550 & NDE650
FOR THE INSTALLER: Final Check List
1. Is the icemaker-dispenser installed indoors, in a
location where the air and water tem peratures are
contro lled, and where th ey do not go beyond
design limitations?
BACK VIEW OF COMPLETED INSTALLATION
ELECTRICAL?
2. is there an electrical service disconnect within
sight of the installed machine? Is the machine on a
separate circuit? Has the voltage been checked
and com pa r ed to na m ep l ate require m en ts ?
3. Have all of the plumbing co nnectio ns been
made and c h ec ked for lea k s?
4. Has the machine been leveled?
5. Is there a minimum of 6 inches of clearance at
the left an d r ight sides of an air c o ol e d m ach i ne ?
6. Is there a minimum of 6 inches of clearance at
the top an d ba ck of the machine for ser vice and
utility connections?
Wall mounted only: Is the machine properly
installed and secured to the wall?
7. Is there a water shut off valve installed near the
machine?
LEVELED?
ICEMAKER
DISPENSER
PLUMBING?
8. Have all of the ship ping blocks been removed?
MACHINE
STAND
April 1997
Page 9
NDE550 & NDE650
INITIAL START UP
Pre Start Inspection
1. Remove the two front panels.
2. Check that all shipping blocks have been
removed.
3. Remove any and al l packing tape (che ck inside
the storage bin).
Start Up
1. Go through the pre start inspection.
2. Open the water hand valve, observe that water
enters the water reservoir, fills the tube from the
reservoir to the evaporator and then shuts off.
Check for leaks.
3. Switch the master switch on. The electrical start
up sequ ence is now on automatic:
A. There will be a short (15 second) delay before
the gearmotor starts.
B. After the gearmotor starts, the compressor will
start.
4. On air cooled models, warm air will begin to flow
from the condenser. Water cooled models will
begin to dischar ge warm water down the drain.
4. Inspect the interior of the machine for loose
screw s or w i r es. Ch eck that no re fr igerant lin es are
rubbi ng each other. Check that the fan blade on air
cooled models turns freely.
5. Check that the machine is installed correctly
according to the final check list.
The above numbers are for new, clean machines.
Field values may be somewhat higher or lower.
6. There ar e no adjus tments to mak e, so repla ce
the pane ls .
7. Check ice dispensing by pushing in on the glass
filler lever. Ice dispenses are portion controlled; by
turnin g a kn ob , the length of ti me th e unit
dispenses when the glass filler lever is pushed
(and the am o un t of ic e di s p en s e d) is adj u sted.
8. Switch off the icemaker-dispenser, remove the
top panel and th e top of the ice storag e bi n.
Sanitize the interior of the ice storage bin by wiping
it with a mixt ur e of 1 ounce of househ ol d bleac h to
2 gallon s of water, all o w to ai r dr y. Replace al l
covers and panels. Switch the icem aker-dispenser
back on .
5. The uni t s h ou l d soo n be making ic e. If de si r e d,
the low side pressure may be checked: it should
be 38 PSIG + or - 2 PSIG.
The air cooled discharge pressure will depend
upon air and water temperatures, but should be
between 240 PSIG and 340 PSIG.
Water cooled discharge pressure should be about
245 PSIG. If needed, adjust the water regulatin g
valve.
9. Give the ow ne r /user the se r vi ce manual, ins tr u c t
him/her in the op er ation and maintenance
require m en ts of the unit. Ma k e su r e th ey k n ow
who to call for service.
10. Fill out the Customer Evaluation and Warranty
Registration form, and mail it in to Scotsman.
April 1997
Page 10
COMPONENT DESCRIPTION
NDE550 & NDE650
Control Box: Conta ins th e el e c t r i cal controls th at
operate the machine.
High Pressure Cut Out Switch: A manual reset
switc h sensing the hi g h si d e r efrigeration press ur e .
It is set to shut the machine off if the discharge
pressure should ever exc eed 450 psig.
Evaporator: A vertical stainle ss steel tu be,
refrigerated, and water filled. In it there is a
stainless steel auger.
Reservoir: Float operated, it maintains the water
level i n th e ev a po r at or at a constant le vel, it also
contains the water level sensor.
Water Level Sensor: Senses if there is water in
the reservoir to make ice out of. Will shut the
machin e off it there is no ne .
Ice Level Sensor: An
electronic "eye", it senses the
presence of ice in the bottom of
the ice discharge chute.
ICE LEVEL SENSORS
Operates to turn the ice
machine on and off
automatically as the level of ice
in the bin changes.
Drain Tube: When uncapped
and lowe r ed , dr a i ns the
evapor a t o r .
Condenser: Air or water
cooled, where the heat
removed in ice making is
discharged.
Ice Storage Bin Assembly: A
plastic lined, insulated cylinder
that receives, stores and
dispenses the ice. Fresh ice
enters at the top , and when the
bin is full enough the ice will be
between the ice level sens ors,
and the ice making will stop.
Ice is dispensed through a
chute at the bottom f ront when
the bin vane sweeps the ice
over th e chu t e .
Glass Filler Lever: Pushing in on this lever
causes the ice dispensing cycle to occur .
Portion Control Knob: Turning this knob adjusts
the length of time of di sp ense.
Note: Portion Control Optional after 4/97.
Low Pressure Cut Out Switch: A manual reset
control that shuts off the ice machine when the low
side pr e ss u r e dr o ps be l ow a pr e s e t po i nt, 0-4 psig.
WATER LEVEL
SENSOR
EVAPORATOR
RESERVOIR
CONTROL
BOX
DRAIN TUBE
HIGH PRESSUR E
CUT OUT
CONDENSER
LOW PRESSURE
CUT OUT
ICE STORAGE B IN
GLASS FILLER LEVER
PORTION
CONTROL
April 1997
Page 11
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