Scotsman DXG 35 User manual

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SCOTSMAN EUROPE - FRIMONT SPA
Via Puccini, 22 - 20010 Pogliano M.se - Milano - Italy
Tel. [phone] (Aut. Sel.)- Telefax [phone]
Direct Line to Service & Parts:
Phone [phone] - Fax [phone]
Website: www.scotsman-ice.com
E-Mail: [email protected]
ISO 9001 - Cert. n. 0080
SERVICE MANUAL
DXG 35
R 134 AVERSION
Cube Dispenser
001000.41 - REV. 04/2015

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Table of contents page
Specifications
GENERAL INFORMATION AND INSTALLATION
Introduction
Unpacking and Inspection
Location and levelling
Electrical connections
Water supply and drain connections
Final check list
Installation practice
OPERATING INSTRUCTIONS
Start up
Operational checks
OPERATING PRINCIPLES (How it works)
Freezing cycle
Harvest cycle
Control sequence
Component description
ADJUSTMENT PROCEDURES
Adjustment of the cube size
Wiring diagram
Service diagnosis
MAINTENANCE AND CLEANING INSTRUCTIONS
General
Icemaker
Cleaning instructions of water system
INDICE 2
3
5
5
5
5
6
6
7
8
8
9
9
11
11
13
14-15
16
18
18
18

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Important operating requirements:
Air temperature
Water temperature
Water pressure
Electr. voltage variations
from voltage rating
specified
on nameplate
MIN.
10°C (50°F)
5°C (40°F)
1 bar
-10%
°C
°F
SPECIFICATIONS
ELECTRONIC CUBE DISPENSER
NOTE .Thedailyice-makingcapacityisdirectlyrelatedtothecondenserairinlettemperature,water
temperature and age of the machine.
To keep your DISPENSER at peak performance levels, periodic maintenance checks must be
carried out as indicated on page 18 of this manual.
ice making capacity
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
Kg.
32 27 21 15 10
AIR COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
10
21
32
38
WATER COOLED MODELS
°C
o
30
29
28
27
26
25
24
23
22
21
20
19
18
Kg. 10
21
32
38
°C
o
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
32 27 21 15 10
WATER TEMPERATURE
°C
o
MAX.
40°C (100°F)
35°C (90°F)
5 bar
+10%

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Air
Water
Capacity Water req.
the cold store lt/24 HR
SPECIFICATIONS
Basic electr. Amps Watts Nr. of wires Amps fuse
230/50/1 2.1 7 3 x 1.5 m/m210
CUBE DISPENSER
machine specifications
Cubes per harvest: 24 medium
* A 15°C water temperature
Electric power cons.
Kwh per 24 Hr
Cond. unit Finish Comp. HP
Stainless stell 1/4 15 Kg.
Dimensions:
HEIGHT 1695 mm.
WIDTH 380 mm.
DEPTH 515 mm.
WEIGHT 73 Kgs.
140*
465*
400*
300

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A. INTRODUCTION
This manual provides the specifications and the
step-by-stepproceduresfortheinstallation,start-
up and operation, maintenance and cleaning for
the Cube Dispenser.
SCOTSMAN dispenser is quality designed,
engineeredandmanufactured,thoroughlytested
providing the utmost in flexibility to fit the needs
of a particular user.
In has been engineered to our own rigid safety
and performance standards.
NOTE .Toretainthesafetyandperformance
built into this icemaker, it is important that
installation and maintenance be conducted
in the manner outlined in this manual.
B. UNPACKING AND INSPECTION
1. Call your authorized Distributor or Dealer
for proper installation.
2. Visually inspect the exterior of the packing
and skid. Any severe damage noted should be
reportedtothedeliveringcarrierandaconcealed
damageclaimformfilledinsubjettoinspectionof
the contents with the carrier’s representative
present.
3. a)Cutandremovetheplasticstripsecuring
the carton box to the skid.
b) Remove the packing nails securing the
carton box to the skid.
c)Cutopenthetopofthecartonandremove
the polystyre protection sheet.
d) Pull out the polystyre posts from the
corners and then remove the carton.
4. Remove the rear panel of the unit and
inspectforanyconcealeddamage.Notifycarrier
ofyourclaimfortheconcealeddamageassteted
in step 2 above.
5. Remove top and upper front panel then
removeallinternalsupportpackingandmasking
tape.
6. Check that refrigerant lines do not rub
againstor touchotherlines orsurfaces, andthat
the fan blade moves freely.
7. Check that the compressor fits snugly onto
all its mounting pads.
8. Use clean damp cloth to wipe the surfaces
inside the storage bin and the outside of the
cabinet.
GENERAL INFORMATION AND INSTALLATION
9. See data plate on the rear side of the unit
and check that local main voltage corresponds
with the voltage specified on it.
CAUTION. Incorrect voltage supplied to
the icemaker will void your parts
replacement program.
10. Remove the manufacturer’s registration
card from the inside of the User Manual and fill-
in all parts including: Model and Serial Number
taken from the data plate.
Forward the completed self-addressed
registration card to the Factory.
C. LOCATION AND LEVELLING
WARNING.Icecubersdispenserisdesigned
for indoor installation only. Extended
periods of operation at temperatures
exceeding the following limitations will
constitute misuse under the terms of the
Manu-facturer’s Limited Warranty
resulting in LOSS of warranty coverage.
1. Position the unit in the selected permanent
location.
Criteria for selection of location include:
a)Minimumroomtemperature10°C(50°F)
and maximum room temperature 40°C (100°F).
b) Water inlet temperatures: minimum 5°C
(40°F) and maximum 35°C (90°F).
c) Well ventilated location for air cooled
models.
d) Service access: adequate space must
beleftforallserviceconnectionsthroughtherear
of the ice maker. A minimum clearance of 15 cm
(6")mustbeleftatthesidesoftheunitforrouting
cooling air drawn into and exhausted out of the
compartment to maintain proper condensing
operation of air cooled models.
2. Level the unit in both the left to right and
front to rear directions.
D. ELECTRICAL CONNECTIONS
See data plate for current requirements to
determine wire size to be used for electrical
connections.Icedispenserrequiresasolidearth
wire.
It is supplied from the factory completely pre-
wired and require only electrical power
connections to the wire cord provided at rear of
the unit.

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Make sure that the ice machine is connected to
its own circuit and individually fused (see data
plate for fuse size).
Themaximumallowablevoltagevariationshould
not exceed -10% and +10% of the data plate
rating. Low voltage can cause faulty functioning
and may be responsible for serious damage to
the overload switch and motor windings.
NOTE. All external wiring should conform to
national, state and local standards and
regulations.
Check voltage on the line and the ice maker’s
data plate before connecting the unit.
E. WATER SUPPLY AND DRAIN
CONNECTIONS
GENERAL
Whenchoosingthewatersupplyfortheicecuber
consideration should be given to:
a) Length of run
b) Water clarity and purity
c) Adequate water supply pressure
Sincewateristhemostimportantsingleingredient
in producting ice you cannot emphasize too
much the three items listed above.
Low water pressure, below 1 bar may cause
malfunction of the ice maker unit.
Water containing excessive minerals will tend to
produce cloudy coloured ice cubes, plus scale
build-up on parts of the water system.
WATER SUPPLY
Connect the 3/4" male fitting of the solenoid
waterinletvalve,usingtheflexibletubesupplied,
tothecoldwatersupplylinewithregularplumbing
fitting and a shut-off valve installed in an
accessible position between the water supply
line and the unit.
If water contains a high level of impurities, it is
advisable to consider the use of an appropriate
water filter or conditioner.
WATER DRAIN
The recommended drain tube is a plastic or
flexible tube with 18 mm (3/4") I.D. which runs to
an open trapped and vented drain. When the
drain is a long run, allow 3 cm pitch per meter
(1/4" pitch per foot).
Aventattheunitdrainconnectionisalsorequired
for proper sump drainage.
WATER DRAIN - WATER COOLED MODELS
The recommended drain tube is a plastic or
flexible tube with 18 mm (3/4") I.D. which runs to
an open trapped and vented drain.
NOTE. Thewatersupplyandthewaterdrain
must be installed to conform with the local
code. In some case a licensed plumber and/
or a plumbing permit is required.
F. FINAL CHECK LIST
1. Is the unit in a room where ambient
temperatures are within a minimum of 10°C
(50°F) even in winter months?
2. Is there at least a 15 cm (6") clearance
around the unit for proper air circulation?
3. Is the unit level? (IMPORTANT)
4. Have all the electrical and plumbing
connectionsbeenmade, andisthe watersupply
shut-off valve open?
5. Has the voltage been tested and checked
against the data plate rating?
6. Has the water supply pressure been
checked to ensure a water pressure of at least
1 bar (14 psi).
7. Checkallrefrigerant linesand conduitlines
to guard against vibrations and possible failure.
8. Havetheboltsholdingthecompressordown
been checked to ensure that the compressor is
snugly fitted onto the mounting pads?
9. Have the bin liner and cabinet been wiped
clean?
10. Has the owner/user been given the User
Manualandbeeninstructedontheimportanceof
periodic maintenance checks?
11. Has the Manufacturer’s registration card
been filled in properly? Check for correct model
and serial number against the serial plate and
mail the registration card to the factory.
12. Has the owner been given the name and
the phone number of the authorized Service
Agency serving him?

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G. TYPICAL INSTALLATION
1. Hand shut-off valve
2. Water filter
3. Water supply line (flexible hose)
4. 3/4" male fitting
5. Vented drain
6. Open trapped vented drain
7. Drain fitting
8. Main switch
9. Power line
WARNING. Ice dispenser is not designed for outdoor installation and will not function in
ambient temperatures below 10°C (50°F) or above 40°C (100°F).
This icemaker will malfunction with water temperatures below 5°C (40°F) or above 35°C
(90°F).

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OPERATING INSTRUCTIONS
START UP
After having correctly installed the cubers
dispenser,completedtheplumbingandelectrical
connections,performthefollowing“Start-up”pro-
cedure.
A. Remove top and upper front panel to be
sure that the tapes securing the curtain and the
spray platen to the evaporator chamber have
been removed.
B. Withdraw the condenser air filter then
removetheunitfrontpanelandlocatethecleaning
switch on the control box.
C. Set the cleaning switch in the cleaning
position.Thiswillclosetheelectricalcircuittothe
water inlet valve and to the hot gas valve
D. TurnON themainswitch. Unitwill startup
in charging cycle mode. During this cycle the
components energized are:
WATER INLET SOLENOID VALVE
HOT GAS SOLENOID VALVE
The Water pump and the Fan motor in the air
cooled versions, are also in operation.
E. Let unit stay in charging cycle for about
three/four minutes till water is coming out from
the drain hose, then move the cleaning switch to
the operation position.
NOTE. During the charging cycle, the water
inlet solenoid valve is energized. The water
flowsthroughthevalvetothebacksideofthe
evaporatorplatenandthendowntofillupthe
icemaker sump for the next freezing cycle.
OPERATIONAL CHECKS
F. The unit now starts its first freezing cycle
with the following components in operation:
COMPRESSOR
WATER PUMP
FAN MOTOR in air cooled version
G. Check to see through the ice discharge
openingthatthespraysystemiscorrectlyseated
and that the water jets uniformely reach the
interioroftheinvertedcupmolds;alsomakesure
thattheplasticcurtainishangingfreelyandthere
is not excessive water spilling through it.
H. The ice making process takes place
thereby, with the water sprayed into the molds
that gets gradually refrigerated by the heat
exchanged with the refrigerant flowing into the
evaporator serpentine.
I. Whentheevaporatortemperaturereaches
apresetvaluetheevaporatorthermostatorcube
size control changes its contacts; the freezing
cycle ends and starts the defrost or harvest
cycle.
Freezing time will range between 20 and 22
minutes in a 21°C ambient temperature. Longer
timefortemperatureabove,shorterwhenbelow.
Average complete cycle range is about 23 to 25
minutes.
J. Check, during the first defrost/harvest
cycle, that the incoming water flows correctly
into the sump in order to re-fill it and the surplus
overflows through the overflow drain tube.
K. Check the texture of ice cubes just
released.Rightsizemusthaveasmalldepression
(about 5-6 mm) in their crown.
If not, wait for the second defrost/harvest cycle
before performing any adjustment.
L. Ifrequired,thelengthofthefreezingcycle
can be modified by turning the knob of the cube
size control or evaporator thermostat located in
front of the control box until the desired size is
achieved.
If the ice cubes are shallow and cloudy, it is
possible that the ice maker runs short of water
duringtheendofthefreezingcycleor,thequality
of the supplied water requires the use of an
appropriate water filter or conditioner.
M. During the defrost or harvest cycle hold a
handful of ice cubes against the bulb of the
storagebinthermostat;theicemakerswitchOFF
in about one-two minutes.
Takeouttheicefromthestoragebinthermostat.
The ice maker should restart automatically in
three-four minutes.
NOTE. The bin thermostat is factory set at
1 ° C (35 ° F) OUT and 4 ° C (39 ° F) IN.
N. Re-fit dispenser panels then instruct the
owner/user on the general operation, and about
the cleaning require.

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In the SCOTSMAN ice cubes dispenser the water

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COMPONENTS DESCRIPTION
A. WATER PUMP
Thewaterpumpoperatescontinuallythroughout
the freezing cycle.
Thepump primesthewater fromthe sumptothe
spray system and through the spray nozzles
sprays it into the inverted cup molds to be frozen
into crystal clear ice cubes.
B. WATER INLET SOLENOID VALVE -
3/4 MALE FITTING
The water inlet solenoid valve is energized only
during the defrost cycle.
When energized it allows a metered amount of
incomingwatertoflowovertheevaporatorcavity
to assist the hot gas in defrosting the ice cubes.
The water running over the evaporator cavity
dropsbygravity,throughthedribblerholesofthe
platen, into the sump.
Onwatercooledversionsthewaterinletsolenoid
valve has one inlet and two outlets with two
separate solenoids energized the first (ice
productioon)bythecontacts3-2oftheevaporator
thermostat and the second (water cooled
condenser) by a specific hi pressure control.
C. HOT GAS SOLENOID VALVE
The hot gas solenoid valve consists basically in
two parts: the valve body and the valve coil.
Locatedonthehotgasline,thisvalveisenergized
by the contacts 3-2 of the evaporator thermostat
during the defrost cycle.
During the defrost cycle the hot gas valve coil is
activated so to attract the hot gas valve piston in
order to give way to the hot gas discharged from
compressor to flow directly into the evaporator
serpentine to defrost the formed ice cubes.
D. BIN THERMOSTAT
The bin thermostat control body is located in the
front of control box behind the front louvered
panel.
The thermostat sensing tube is located into a
bulbholder onthe sidewallof theice storagebin
where it automatically shuts the icemaker OFF
when in contact with the ice and re-starts the
icemaker when the ice is removed. Factory
settings are 1°C (35°F) OUT and 4°C (39°F) IN.
E. CUBE SIZE CONTROL (EVAPORATOR
THERMOSTAT)
The cube size control (evaporator thermostat)
body is located in the front of control box behind
the front louvered panel; it’s basically a reverse
acting temperature control which closes the
contacts 3-2 when its temperature decreases
and closes the opposite contacts 3-4 when the
temperature rises.
OPERATION - ELECTRICAL SEQUENCE
The following charts illustrate which switches
and components are ON or OFF during the two
phases of the icemaking cycle.
Refer to the wiring diagram for reference.
FREEZING CYCLE
Electrical components ON OFF
Compressor............................................•
Water Pump ...........................................•
Fan Motor (Air cooled only)....................•
Hot Gas Valve ........................................ •
Inlet Water Valve.................................... •
Electrical Controls CLOSE OPEN
Evaporator Thermostat (contacts 3-4) ...•
Evaporator Thermostat (contacts 3-2) ... •
Bin Thermostat.......................................•
HARVEST CYCLE
Electrical components ON OFF
Compressor............................................•
Water Pump ........................................... •
Fan Motor (Air cooled only).................... •
Hot Gas Valve ........................................•
Inlet Water Valve....................................•
Electrical Controls CLOSE OPEN
Evaporator Thermostat (contacts 3-4) ... •
Evaporator Thermostat (contacts 3-2) ...•
Bin Thermostat.......................................•
Freeze Cycle
Average Discharge Pressure
A/C: 7 ÷11 bars (100÷155 psig)
Average Discharge Pressure
W/C: 7 ÷10 bars (100÷140 psig)
Suction Pressure
End Freeze Cycle: 0 ÷0.1 bar (0 ÷1.5 psig)
REFRIGERANT METERING DEVICE:
capillary tube
REFRIGERANT CHARGE (R 134 A)
Model Air cooled Water cooled
DXG 35 250 gr (8.81 oz.) 140 gr (4.33 oz.)

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The thermostat sensing bulb is located into a
plastic tube (bulb holder) secured by two clips
directly to the evaporator serpentine.
Thiscontroldeterminesthelengthofthefreezing
cycle and correspondingly the size of the cubes.
A lower setting will produce a larger cube
(oversize) while a higher setting a smaller cuber
(shallow size).
When closed on contacts 3-2 it activates the
defrost or harvest cycle components.
The cube size control is set up in the factory
(knob in the black dot position) and doesn't
require any adjustment when the ambient
temperature remains between 15 and 30°C
(60 and 90°F).
F. FAN MOTOR (Air cooled version)
Thefanmotoriselectricallyconnectedinparallel
to the water pump and it operates continuously
onlyduringthefreezingcyclekeepingtheproper
head pressure by circulating air through the
condenser fins.
G. COMPRESSOR
The hermetic compressor is the heart of the
refrigerant system and it is used to circulate and
retrieve the refrigerant throughout the entire
system. It compresses the low pressure refri-
gerant vapor causing its temperature to rise and
becomehighpressure hotvapor(hot gas)which
is then released through the discharge valve.
H. WATER SPRAY SYSTEM
Through its nozzles it sprays the water in each
individual cup to be frozen into ice.
I. DISPENSING PUSH BUTTON
Located at upper right side of the dispensing
frame, it energizes the auger drive motor when
pushed.
J. CLEANING SWITCH
Located on the bottom side of the control box is
used to energize the water inlet and the hot gas
valvessotochargethewaterintothesumpofthe
machine when neaded.
K. HI PRESSURE CONTROL
(Water cooled version)
Usedonlyonthewatercooledversionsitoperates
to keep between 7 and 10 bars (100 ÷140 psig)
thehi-sideordischargepressureoftherefrigerant
system by energizing the coil of the water inlet
solenoidvalvethatcontrolthecoolingwaterflow
to the condenser.
L. CONDENSER AIR FILTER
(Air cooled version)
Located in front of the air cooled condenser can
beremovedbywithdrawingitthroughtheopening
of the front panel for cleaning or replacing.
A lower plastic guide, installed inside the unit, is
usedforthe correctslidingand locationofthe air
filter.
M. SAFETY HI TEMPERATURE
THERMOSTAT
Locatedonthe bottompart ofthecontrolbox itis
amanualresetswitchthattripsOFFtheoperation
of the machine when its bulb (located on the
liquid line just before the drier) reaches the
temperature of 70°C (160°F).
N. AUGER DRIVE MOTOR
The Auger Motor is located behind the upper
front panel and is used to move the ice cubes
towards the dispensing chute placed on the
upper side of the dispensing system.
Attivation of the same is by push button at
dispensing chute frame.
O. HI PRESSURE CONTROL
(Water cooled version)
Usedonlyon21-31-40-50watercooledversions
itoperatestokeepbetween8.5and10bars(120
÷140 psig) the hi-side or discharge pressure of
the refrigerant system by energizing the coil of
the water inlet solenoid valve that control the
cooling water flow to the condenser.
P. HI PRESSURE CONTROL
(Water cooled version)
Usedonlyonthewatercooledversionsitoperates
to keep between 7 and 10 bars (100 ÷140 psig)
thehi-sideordischargepressureoftherefrigerant
system by energizing the coil of the water inlet
solenoidvalvethatcontrolthecoolingwaterflow
to the condenser.

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WIRING DIAGRAM
AIR COOLED 230/50/1

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SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION
Unit will not run Blown fuse Replace fuse & check for cause of
blown fuse.
Main switch in OFF position Turn switch to ON position
Bin thermostat set improperly Adjust rotating its setting screw
Loose electrical connections Check wiring
Compressor cycles intermittently Low voltage Check circuit for overloading
Check voltage at the supply to the
building. If low, contact the power
company
Non-condensable gas in system Purge the system
Dirty condenser Clean with vacuun cleaner, air or
stiff brush. (DO NOT use wire brush).
Air circulation blocked Allow sufficient air space all
around unit.
Compressor starting device with Check for loose wires in starting
loose wires device.
Cubes too small Cube size control set improperly Check and adjust for proper
operation.
Capillary tube partially restricted Blow charge, add new gas & drier,
after evacuating system with
vacuum pump.
Moisture in the system Same as above.
Shortage of water See remedies for shortage of water.
Shortage of refrigerant Check for leaks & recharge.
Cloudy cubes Shortage of water See remedies for shortage of water.
Dirty water supply Use water softner or water filter.
Accumulated impurities Use SCOTSMAN Ice Machine
cleaner.
Shortage of water Water spilling out through curtain Check or replace curtain.
Water solenoid valve not opening Replace valve.
Water leak in sump area Locate and repair.
Water flow control plugged Remove and clean.
SERVICE DIAGNOSIS

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SYMPTON POSSIBLE CAUSE SUGGESTED CORRECTION
Irregular cubes size & Some jets plugged Remove jet cover and clean.
some cloudy Shortage of water See shortage of water.
Unit not levelled Level as required.
Poor pumping
Check and/or replace the water pump.
Cubes too large Cube size control set improperly Checkandadjustforproperoperation.
Decreased ice capacity Inefficient compressor Replace.
Leaky water valve Repair or replace.
Non-condensable gas in system Purge the system.
Poor air circulation or excessive Relocate the unit or provide for
hot location more ventilation.
Overcharge of refrigerant Correct the charge. Purge off slowly.
Capillary tube partially restricted Blow charge, add new gas & drier,
after evacuating system with
vacuum pump.
Undercharge of refrigerant Charge to data plate indication.
Discharge head pressure too high See incorrect discharge pressure.
Clogged air filter Clean or replace.
Poor harvest Restriction in incoming water line Check water valve strainer and flow
control. If necessary enlarge the
flow control orifice.
Too short defrost time Check temperature control.
Replace if necessary.
Cube size control set for too large Re-set cube size control.
cubes
Water inlet valve not opening Valve coil with open winding.
Replace valve.
Hot gas valve orifice restricted Replace hot gas valve assy.
Air vented holes in mold cups plugged Clean out holes.
Discharge head pressure too low See incorrect discharge pressure
Unit won't harvest Inoperative cube size control Replace cube size control
Hot gas valve not opening Valve coil with open winding.
Replace valve.
Water solenoid valve not opening Valve coil with open winding.
Replace valve.
Incorrect discharge pressure Dirty air filter Clean or replace.
Inoperative hi press control Replace.
(Water cooled)
Water inlet valve to condenser Clean or replace.
partially clogged
Excessive water in unit base Water tubing leaking Check. Tighten or replace.
SERVICE DIAGNOSIS

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MAINTENANCE AND CLEANING INSTRUCTIONS
A. GENERAL
The periods and the procedures for
maintenanceandcleaningaregivenasguides
and are not to be construed as absolute or
invariable.
Cleaning, especially, will vary depending upon
local water and ambient conditions and the ice
volume produced; and, each icemaker must be
maintened individually, in accordance with its
particular location requirements.
B. ICEMAKER
The following maintenance should be
scheduledatleasttwotimesperyearonthese
icemakers.
1. Check and clean the water line strainer.
2. Check that the icemaker is levelled in side
to side and in front to rear directions.
3. Checkforwaterleaksandtightendrainline
connections.Pourwaterdownbindrainlinetobe
sure that drain line is open and clear.
4. Check size, condition and texture of ice
cubes. Perform adjustment of cube size control
as required.
5. Check the bin thermostat to test shut-off.
Put a showelfull of ice cubes in contact
with the bin thermostat bulb for at least one
minute.
This should cause the ice maker to shut off.
Within few seconds after the removal of the
ahowelfull of ice from bin thermostat bulb, the
icemaker restarts.
NOTE. Within minutes after the ice is
removed from the bulb holder tube, the
sensing bulb inside the tube will warm up
and cause the icemaker to restart. This
control is factory set and should not be
reset until testing is performed.
6. Check for refrigerant leaks.
C. CLEAN - REPLACE OF AIR
CONDENSER FILTER
1. Withdrawtheairfilterfromthefrontthrough
the opening of the front panel.
2. Blowpressurisedairontheoppositedirection
of the condenser air flow so to remove the dust
accumulated.
3. If pressurised air is not available, use
tap water always in the counter flow air
diretcion.
Once cleaned shake it so to remove most of the
accumulated water, then dry it using an hair
dryer.
NOTE. In case the air filter strainer is
damaged replace it with a new one.
4. Installitagainbypushingitthroughthefront
panel opening.
D. CLEANING INSTRUCTIONS OF
WATER SYSTEM
1. Remove the front and top panels to gain
access either to the control box and to the
evaporator.
2. Make sure that all ice cubes have been
released from their cups, then switch OFF the
machine.
3. Scoop out all the ice cubes stored into the
bin in order to prevent them from being
contaminated with the cleaning solution.

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7. Using a bottle, poor fresh water into the
bottom of the sump/freezing chamber to clean
out most of scale deposit.
8. Install again the spray platen, the curtain as
well as the bottom plastic cup.
9. Preparethecleaningsolutionbydilutingina
plastic container two liters of warm water
(45°-50°C)with0,2litersofIceMachineCleaner.
WARNING. The SCOTSMAN Ice Machine
Cleaner contains Phosphoric and
Hydroxyacetic acids.
Thesecompoundsarecorrosiveandmay
cause burns if swallowed, DO NOT indu-
ce vomiting. Give large amounts of water
or milk. Call Physician immediately.
In case of external contact flush with
water. KEEP OUT OF THE REACH OF
CHILDREN.
10. Remove the evaporator cover then slowly
pour onto the evaporator platen the cleaning
solution.With thehelpof abrush dissolvethe most
resistantandremotescaledepositsintheplaten.
11. SwitchONagainthemachineatfront master
button switch to start the icemaking process.
Allow the ice maker to operate for about 20
minutes. In case of any ice produced thrown
away then turn the cleaning switch to the
"cleaning" position (II) till the release of the ice
cubes from their cups.
NOTE. The amount of Cleaner and the time
needed for the cleaning of water system
depends of the water conditions.
12. SwitchOFF theicedispenserthenflushout
the cleaning solution from the sump reservoir by
takingoffthesumpplasticcup.Onceflushedout
install again the sump plastic cup.
13. Pour onto the evaporator cavity two or
three liters of clean potable water to rinse the
mold cups and the platen.
14. Switch ON again the unit. The water pump
is again in operation to circulate the water in
order to rinse the entire water system.
Dotheoperationaspersteps12and13twiceso
to be sure no more traces of descaling solution
remains into the sump.
15. With machine in OFF mode pour on the
upper side of the evaporator platen fresh water
with a capfull of sanitizing solution then turn
again the machine in normal operating mode so
to sanitize all the water system for approx. 10
minutes.
NOTE. Do not mix descaling with sanitizing
solution to avoid the generation of a very
aggressive acid.
4. Remove clamp and the plastic cup located
onthebottomofsump/freezingchambertodrain
out all water and scale deposits.
5. Lift up curtain from brackets and remove
the same.
6. Lift up the entire spray platendisconnect
water hose and take it out to clean it separately.

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16. Switch OFF the machine and flush out the
sanitizing solution from the sump reservoir then
withtheswitchin"cleaning" position(II), switchit
ON again.
When water starts overflowing through the
drain line, set the switch to "operation" (I)
position. The unit is now ready to resume
normal operation.
17. Place again the evaporator cover and the
unit service panels.
18. At completion of the freezing and harvest
cycle make sure of proper texture and clearness
of the ice cubes and that, they do not have any
acid taste.
ATTENTION. In case the ice cubes are
cloudy-whiteandhave an acid taste, melt
them immediately by pouring on them
some warm water. This to prevent that
somebody could use them.
19. Wipe clean and rinse the inner surfaces of
the storage bin.
REMEMBER. To prevent the accumulation
of undesirable bacteria it is necessary to
sanitizeeveryweektheinteriorofthestorage
bin.