Scotsman EC 45 User manual

Page 1
Page 1
SERVICE MANUAL
EC 45
EC 55
EC 85
EC 105
EC 125
EC 175
Electronic cubers
with storage
and PWD system
MS 1000.81 REV. 06/2002

Page 2
Page 2
Table of contents page
Specifications EC 45
Specifications EC 55
Specifications EC 85
Specifications EC 105
Specifications EC 125
Specifications EC 175
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, REMOVAL AND REPLACEMENT PROCEDURES
Adjustment of the cube size
Wiring diagram EC 45-55-85-105
Wiring diagram EC 125-175
Service diagnosis
MAINTENANCE AND CLEANING INSTRUCTIONS
General
Icemaker
Cleaning instructions of water system
INDICE 2
3
5
7
9
11
13
35
36
37
38
15
15
15
15
16
17
17
18
19
24
27
30
31
41
41
42

Page 3
Page 3
Important operating requirements:
Air temperature
Water temperature
Water pressure
Electr. voltage variations
from voltage rating
specified
on nameplate
MIN.
10°C
5°C
1 bar
-10%
°C
°F
SPECIFICATIONS
ELECTRONIC CUBER MODEL EC 45
NOTE .Withtheunitin"built-in"conditions,theiceproductionisgraduallyreducedinrespecttothe
levels shown in the graf, up to a maximum of 10% at room temperatures higher than 32 ° C.
The daily ice-making capacity is directly related to the condenser air inlet temperature, water
temperature and age of the machine.
TokeepyourSCOTSMANCUBERatpeakperformancelevels,periodicmaintenancechecksmust
be carried out as indicated on page 41 of this manual.
MAX.
40°C
40°C
5 bar
+10%
ice making capacity
24
23
22
21
20
19
18
17
16
15
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
°C
o
24
23
22
21
20
19
18
17
16
15
Kg.
32 27 21 15 10
10
21
32
38
°C
o
°C
o
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.

Page 4
Page 4
Stainless steel 1/4 14 Kg.
EC 45 AS 6 Air
EC 45 WS 6 Water
Start . Electric power cons.
Amps Kwh per 24 Hr
Capacity Water req.
the cold store lt/24 HR
Model Cond. unit Finish Comp. HP
SPECIFICATIONS
Basic electr. Amps Watts Nr. of wires Amps fuse
230/50/1 2.2 11 340 6.5 3 x 1.5 mm210
100*
270*
EC 45 - CUBER
machine specifications
Cubes per harvest: 18 medium
* A 15°C water temperature
Dimensions:
HEIGHT 725 mm.
WIDTH 457 mm.
DEPTH 480 mm.
WEIGHT 39 Kgs.

Page 5
Page 5
MIN.
10°C
5°C
1 bar
-10%
Important operating requirements:
Air temperature
Water temperature
Water pressure
Electr. voltage variations
from voltage rating
specified
on nameplate
SPECIFICATIONS
ELECTRONIC CUBER MODEL EC 55
MAX.
40°C
40°C
5 bar
+10%
ice making capacity
NOTE .Withtheunitin"built-in"conditions,theiceproductionisgraduallyreducedinrespecttothe
levels shown in the graf, up to a maximum of 10% at room temperatures higher than 32 ° C.
The daily ice-making capacity is directly related to the condenser air inlet temperature, water
temperature and age of the machine.
TokeepyourSCOTSMANCUBERatpeakperformancelevels,periodicmaintenancechecksmust
be carried out as indicated on page 41 of this manual.
°C
°F
32
30
28
26
24
22
20
18
Kg.
32 27 21 15 10
10
21
32
38
°C
o
°C
o
32
30
28
26
24
22
20
18
Kg.
32 27 21 15 10
10
21
32
38
°C
o
°C
o
AIR COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
WATER COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.

Page 6
Page 6
Stainless steel 1/4 14 Kg.
EC 55 AS 6 Air
EC 55 WS 6 Water
Start . Electric power cons.
Amps Kwh per 24 Hr
Capacity Water req.
the cold store lt/24 HR
Model Cond. unit Finish Comp. HP
SPECIFICATIONS
Basic electr. Amps Watts Nr. of wires Amps fuse
230/50/1 2.2 11 390 7 3 x 1.5 mm210
0110 **
290*
EC 55 - CUBER
machine specifications
Cubes per harvest: 24 medium
* A 15°C water temperature
Dimensions:
HEIGHT 738 mm.
WIDTH 457 mm.
DEPTH 522 mm.
WEIGHT 44 Kgs.

Page 7
Page 7
SPECIFICATIONS
ELECTRONIC CUBER MODEL EC 85
NOTE .Withtheunitin"built-in"conditions,theiceproductionisgraduallyreducedinrespecttothe
levels shown in the graf, up to a maximum of 10% at room temperatures higher than 32 ° C.
The daily ice-making capacity is directly related to the condenser air inlet temperature, water
temperature and age of the machine.
TokeepyourSCOTSMANCUBERatpeakperformancelevels,periodicmaintenancechecksmust
be carried out as indicated on page 41 of this manual.
Important operating requirements:
MIN MAX
Air temperature 10°C (50°F) 40°C (100°¯F)
Water temperature 5°C (40°F) 40°C (100°F)
Water pressure 1 bar (14 psi) 5 bar (70 psi)
Electr. voltage
variations from
voltage rating
specified on
nameplate -10% +10%
ice making capacity
40
38
36
34
32
30
28
26
Kg.
32 °C
AIR COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
10
21
32
38
40
38
36
34
32
30
28
26
Kg.
°C
WATER COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
10
21
32
38
27 21 15 10 32 27 21 15 10

Page 8
Page 8
EC 85 AS Air
EC 85 WS Water Stainless steel 3/8 14 Kg.
Start . Electric power cons.
Amps Kwh per 24 Hr
Capacity Water req.
the cold store lt/24 HR
Model Cond. unit Finish Comp. HP
SPECIFICATIONS
Basic electr. Amps Watts Nr. of wires Amps fuse
230/50/1 3.2 17 500 10 3 x 1.5 mm210
0140 **
380*
EC 85 - CUBER
machine specifications
Cubes per harvest: 24 medium
* A 15°C water temperature
Dimensions:
HEIGHT 738 mm.
WIDTH 457 mm.
DEPTH 522 mm.
WEIGHT 44 Kgs.

Page 9
Page 9
SPECIFICATIONS
ELECTRONIC CUBER MODEL EC 105
NOTE .Withtheunitin"built-in"conditions,theiceproductionisgraduallyreducedinrespecttothe
levels shown in the graf, up to a maximum of 10% at room temperatures higher than 32 ° C.
The daily ice-making capacity is directly related to the condenser air inlet temperature, water
temperature and age of the machine.
TokeepyourSCOTSMANCUBERatpeakperformancelevels,periodicmaintenancechecksmust
be carried out as indicated on page 41 of this manual.
Important operating requirements:
MIN MAX
Air temperature 10°C (50°F) 40°C (100°¯F)
Water temperature 5°C (40°F) 40°C (100°F)
Water pressure 1 bar (14 psi) 5 bar (70 psi)
Electr. voltage
variations from
voltage rating
specified on
nameplate -10% +10%
ice making capacity
50
48
46
44
42
40
38
36
34
32
30
Kg.
32 °C
AIR COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
10
21
32
38
WATER COOLED MODELS
27 21 15 10
50
48
46
44
42
40
38
36
34
32
30
Kg.
32 °C
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
32
38
27 21 15 10
°C
10
21

Page 10
Page 10
Basic electr. Amps. Start Amps Watts No of Wires Amp. Fuse
SPECIFICATIONS (CONT'D)
Electr. power cons.
Kwh per 24 Hrs
230/50/1 3.5 18 550 10 3 x 1.5 mm210
Cubes per harvest: 32 medium
* At 15°C water temperature
Model Cond. Finish Comp. HP Ice bin cap. Water requirem
Kgs. LTx24 HR
EC 105 AS Air S/Steel 180*
3/8 18
EC 105 WS Water S/Steel 530*
FRONT VIEW
HEIGHT (without legs) 813 mm.
HEIGHT (with legs) 950 mm.
WIDTH 535 mm.
DEPTH 534 mm.
WEIGHT 44 Kgs.
EC 105 - CUBER
machine specifications

Page 11
Page 11
SPECIFICATIONS
ELECTRONIC CUBER MODEL EC 125
NOTE .Withtheunitin"built-in"conditions,theiceproductionisgraduallyreducedinrespecttothe
levels shown in the graf, up to a maximum of 10% at room temperatures higher than 32 ° C.
The daily ice-making capacity is directly related to the condenser air inlet temperature, water
temperature and age of the machine.
TokeepyourSCOTSMANCUBERatpeakperformancelevels,periodicmaintenancechecksmust
be carried out as indicated on page 41 of this manual.
Important operating requirements:
MIN MAX
Air temperature 10°C (50°F) 40°C (100°¯F)
Water temperature 5°C (40°F) 40°C (100°F)
Water pressure 1 bar (14 psi) 5 bar (70 psi)
Electr. voltage
variations from
voltage rating
specified on
nameplate -10% +10%
ice making capacity
75
70
65
60
55
50
45
Kg.
32 °C27 21 15 10
AIR COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
10
21
32
38
75
70
65
60
55
50
45
Kg.
°C
WATER COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
32
38
10 21
32 27 21 15 10

Page 12
Page 12
Basic electr. Amps. Start Amps Watts No of Wires Amp. Fuse
SPECIFICATIONS (CONT'D)
Electr. power cons.
Kwh per 24 Hrs
230/50/1 3.8 20 670 13 3 x 1.5 mm210
Cubes per harvest: 36 large / 48 medium / 84 small
* At 15°C water temperature
Ice bin cap. Water requirem
Kgs. LTx24 HR
EC 125 AS Air S/Steel 160*
1/2 28
EC 125 WS Water S/Steel 680*
Model Cond. Finish Comp. HP
FRONT VIEW
HEIGHT (without legs) 900 mm.
HEIGHT (with legs) 1020 mm.
WIDTH 675 mm.
DEPTH 520 mm.
WEIGHT 75 Kgs.
EC 125 - CUBER
machine specifications

Page 13
Page 13
Important operating requirements:
MIN MAX
Air temperature 10°C (50°F) 40°C (100°¯F)
Water temperature 5°C (40°F) 40°C (100°F)
Water pressure 1 bar (14 psi) 5 bar (70 psi)
Electr. voltage
variations from
voltage rating
specified on
nameplate -10% +10%
ice making capacity
87,5
Kg.
32 10 °C
AIR COOLED MODELS
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
10
21
32
38
WATER COOLED MODELS
10
21
27 21 15
85
82,5
80
77,5
75
72,5
70
67,5
65
62,5
60
57,5
87,5
Kg.
32 10 °C
WATER TEMPERATURE
AMBIENT TEMPERATURE
ICE PRODUCED PER 24 HRS.
°C
10
21
10
21
32
38
27 21 15
85
82,5
80
77,5
75
72,5
70
67,5
65
90
92,5
95
SPECIFICATIONS
ELECTRONIC CUBER MODEL EC 175
NOTE .Withtheunitin"built-in"conditions,theiceproductionisgraduallyreducedinrespecttothe
levels shown in the graf, up to a maximum of 10% at room temperatures higher than 32 ° C.
The daily ice-making capacity is directly related to the condenser air inlet temperature, water
temperature and age of the machine.
TokeepyourSCOTSMANCUBERatpeakperformancelevels,periodicmaintenancechecksmust
be carried out as indicated on page 41 of this manual.

Page 14
Page 14
Basic electr. Amps. Start Amps Watts No of Wires Amp. Fuse
SPECIFICATIONS (CONT'D)
Electr. power cons.
Kwh per 24 Hrs
230/50/1 5.3 29 850 18 3 x 1.5 mm216
Cubes per harvest: 36 large / 48 medium
* At 15°C water temperature
Ice bin cap. Water requirem
Kgs. LTx24 HR
EC 175 AS Air S/Steel 0160*
3/4 28
EC 175 WS Water S/Steel 1000*
Model Cond. Finish Comp. HP
FRONT VIEW
HEIGHT (without legs) 900 mm.
HEIGHT (with legs) 1020 mm.
WIDTH 675 mm.
DEPTH 520 mm.
WEIGHT 75 Kgs.
EC 175 - CUBER
machine specifications

Page 15
Page 15
8. Use clean damp cloth to wipe the surfaces
inside the storage bin and the outside of the
cabinet.
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 Frimont factory.
11. Ifnecessary, fitthe four legs(not onEC45)
into their seats on the machine base and adjust
them to the desired level.
C. LOCATION AND LEVELLING
WARNING.ThisIceCuberisdesignedfor
indoorinstallationonly.Extendedperiods
of operation at temperatures exceeding
the following limitations will constitute
misuseunderthetermsoftheSCOTSMAN
Manufacturer’sLimitedWarrantyresulting
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.AllSCOTSMANicemakersrequire
a solid earth wire.
A. INTRODUCTION
This manual provides the specifications and the
step-by-stepproceduresfortheinstallation,start-
up and operation, maintenance and cleaning for
the SCOTSMAN EC series icemakers.
The Electronic Cubers are quality designed,
engineered and manufactured.
Their ice making systems are thoroughly tested
providing the utmost in flexibility to fit the needs
of a particular user.
These icemakers have 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. CallyourauthorizedSCOTSMANDistributor
or Dealer for proper installation.
2. Visually inspect the exterior of the packing
and skid. Any severe damage noted should be
reported to the delivering carrier and a concealed
damage claim form filled in subjet to inspection of
thecontentswiththecarrier’srepresentativepresent.
3. a)Cutandremovetheplasticstripsecuring
the carton box to the skid.
b)Cutopenthetopofthecartonandremove
the polystyre protection sheet.
c) Pull out the polystyre posts from the
corners and then remove the carton.
4. Remove the front panel of the unit and
inspectforanyconcealeddamage.Notifycarrier
ofyourclaimfortheconcealeddamageassteted
in step 2 above.
5. Check that refrigerant lines do not rub
againstortouchotherlinesorsurfaces,andthat
the fan blade moves freely.
6. Check that the compressor fits snugly onto
all its mounting pads.
7. Remove all internal support packing and
masking tape.
GENERAL INFORMATION AND INSTALLATION

Page 16
Page 16
All SCOTSMAN ice machines are supplied from
thefactorycompletelypre-wiredandrequireonly
electrical power connections to the wire cord
provided at rear of the unit.
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
Air Cooled Versions
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 an appropriate
water filter or conditioner.
Water Cooled Versions - EC 45-55-85-105
OnWaterCooledversionthewaterinletsolenoid
valve has two separate outhets one for the
condenser and the second for the production of
ice.
Water Cooled Versions - EC 125-175
The water cooled versions require two separate
inlet water supplies, one for water sprayed for
making the ice cubes and the other for the water
cooled condenser.
Connect the 3/4" male fitting of the water inlet of
condenserusing theflexible tube suppliedto the
cold water supply line with regular plumbing
fitting and a shut-off valve installed in an
accessible position between the water supply
line and the unit.
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.
WATER DRAIN - WATER COOLED MODELS
Connect the 3/4" male fitting of the condenser
water drain, utilizing a second flexible hose, to
the 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.
The EC series Ice Cubers can pump out water
up to 1.5 m rise
or to 30 m on horizontal length.
POWER
WATER INLET
WATER DRAIN
HAND DISCONNECT
SWITCH
WATER
FILTER
WATER
VALVE
POWER
WATER INLET
WATER DRAIN
HAND DISCONNECT
SWITCH
WATER
FILTER
WATER
VALVE

Page 17
Page 17
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,andisthewatersupply
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. Checkallrefrigerantlinesandconduit lines
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. Hastheownerbeengiventhenameandthe
phone number of the authorized SCOTSMAN
Service Agency serving him?
G. INSTALLATION PRACTICE
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. This icemaker 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).

Page 18
Page 18
START UP
Afterhavingcorrectlyinstalledtheicemakerand
completed the plumbing and electrical
connections,performthefollowing“Start-up”pro-
cedure.
A. Give power to the unit to start it up by
switching “ON” the power line main disconnect
switch.
NOTE. Every time the unit returns under
power, after having been switched off, the
water inlet valve, the hot gas valve and the
water drain valve get energized for a period
of 5 minutes, thus to admit new water to the
machine sump reservoir to fill it up and,
eventually,towash-offanydirtthatcanhave
deposited in it during the unit off period
(Fig.1).
B. During the water filling operation, check to
seethattheincomingwaterdribbles,throughthe
evaporator platen dribbler holes, down into the
sump reservoir to fill it up and also that the
incoming surplus of water flows out through the
overflow pipe into the drain line.
OPERATING INSTRUCTIONS
During the water filling phase the components
energized are:
THE WATER INLET SOLENOID VALVE
THE HOT GAS SOLENOID VALVE
THE WATER DRAIN SOLENOID VALVE
NOTE. If in the5 minuteslenght ofthe water
filling phase the machine sump reservoir
does not get filled with water up to the rim of
the overflow pipe, it is advisable to check:
1.Thewaterpressureofthewatersupplyline
thatmustbeatleast1bar(14psig)Minimum
(Max 5 bar-70 psig).
2.The filtering device installed in the water
line that may reduce the water pressure
below the Minimum value of 1 bar (14 psig).
3. Any clogging situation in the water circuit
like the inlet water strainer and/or the flow
control.
C. All water coming from the overflow is
collected inside the Sealed Water Reservoir.
Assoonasthewaterreachesitsmaximumlevel,
theWaterDrainPumpisenergizedfor8seconds
pumpingoutmostofthewatercontainedintothe
Sealed Water Reservoir.
16
15
14
13
2
1
7
8
9
10
3
4
5
6
11
12
Rx Tx
WATER IN VALVE
HOT GAS VALVE
CONTACTOR COIL
FAN MOTOR
WATER PUMP
- EVAPORATOR
- AMBIENT
- CONDENSER
TEMPERATURE SENSORSBINCOMPRESSOR
TRANSF.
DATA
PROCESSOR
ELECTR.
TIMER
DIP
SWITCH
ELECTRONIC CARD
L
N
RELAYS
RELAY
TRIAC
WATER DRAIN VALVE
FIG. 1

Page 19
Page 19
Incaseofcondensercloggingsuchtoprevent
the proper flow of the cooling air or, in case
the fan motor is out of operation or shortage
of water in the water cooled condenser, the
condenser temperature rises and when it
reaches70 ° C(160 ° F)-foraircooledversion
- or 60 ° C (140 ° F) - for water cooled version -
the condenser temperature sensor shuts-off
theicemakerwiththeconsequentlight-upof
the RED WARNING LED (Fig.3).
Afterhavingdiagnosedthereasonoftherise
of temperature and removed its cause, it is
necessaryto unplug (waitfewseconds) and
pluginagaintheunit,thustoputthemachine
in condition to initiate a new freezing cycle.
Themachinerestartswiththeusual5minutes
waterfillingphaseinordertoprovideenough
water into the sump tank.
D. At completion of the water filling phase
(5minutes)theunitpassesautomaticallyintothe
freezing cycle with the start up of:
COMPRESSOR
CONTACTOR COIL (EC 125-175 only)
WATER PUMP
FANMOTOR(inaircooledversion)controlledby
thecondensingtemperaturesensorlocatedwithin
the condenser fins (Fig.2).
OPERATIONAL CHECKS
E. Install, if required, the refrigerant service
gauges on both the high side and low side
Scraeder valves to check the compressor head
and suction pressures.
NOTE.On aircooledmodels,thecondenser
temperature sensor, which is located within
the condenser fins, keep the head
(condensing) pressure between 8.5 and 9.5
bar (110 ÷ 130 psig).
16
15
14
13
2
1
7
8
9
10
3
4
5
6
11
12
Rx Tx
WATER IN VALVE
HOT GAS VALVE
CONTACTOR COIL
FAN MOTOR
WATER PUMP
- EVAPORATOR
- AMBIENT
- CONDENSER
TEMPERATURE SENSORSBINCOMPRESSOR
TRANSF.
DATA
PROCESSOR
ELECTR.
TIMER
DIP
SWITCH
ELECTRONIC CARD
L
N
RELAYS
RELAY
TRIAC
WATER DRAIN VALVE
FIG. 2

Page 20
Page 20
F. Check to see through the ice discharge
openingthatthespraysystemiscorrectlyseated
and that the water jets uniformely reach the
interioroftheinvertedmoldcups;alsomakesure
thattheplasticcurtain ishangingfreelyandthere
is not excessive water spilling through it.
16
15
14
13
2
1
7
8
9
10
3
4
5
6
11
12
Rx Tx
WATER IN VALVE
HOT GAS VALVE
CONTACTOR COIL
FAN MOTOR
WATER PUMP
- EVAPORATOR
- AMBIENT
- CONDENSER
TEMPERATURE SENSORSBINCOMPRESSOR
TRANSF.
DATA
PROCESSOR
ELECTR.
TIMER
DIP
SWITCH
ELECTRONIC CARD
L
N
RELAYS
RELAY
TRIAC
WATER DRAIN VALVE
FIG. 4
16
15
14
13
2
1
7
8
9
10
3
4
5
6
11
12
Rx Tx
WATER IN VALVE
HOT GAS VALVE
CONTACTOR COIL
FAN MOTOR
WATER PUMP
- EVAPORATOR
- AMBIENT
- CONDENSER
TEMPERATURE SENSORSBINCOMPRESSOR
TRANSF.
DATA
PROCESSOR
ELECTR.
TIMER
DIP
SWITCH
ELECTRONIC CARD
L
N
RELAYS
RELAY
TRIAC
WATER DRAIN VALVE
FIG. 3