Scotsman F0522 Prodigy Plus, F0822 Prodigy Plus, F1222 Prodigy Plus, F1522 Prodigy Plus, N0422 Prodigy Plus Service Manual
...
Prodigy Flaked and Nugget Ice Machines
Service Manual
for models
F0522, F0822, F1222, F1522
N0422, N0622, N0922, N1322
including Prodigy Plus D series
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Introduction
These ice machines are the result of years of
experience with aked and nugget ice machines.
The latest in electronics has been coupled with the
time tested Scotsman aked ice system to provide
reliable ice making and the features needed by
customers.
The features include easily accessible air lters,
simple conductivity water level sensing, evaporator
clearing at shut down, photo-eye sensing bin control
and the ability to add options.
Contents
Installation: ............................................................... Page 4
Location:
N0422, F0522, N0622, F0822 Cabinet Layout
N0922, F1222, N1322, F1522 Cabinet Layout
N0422, F0522, N0622, F0822 D Cabinet Layout
N0922, F1222, N1322, F1522 D Cabinet Layout .................................. Page 9
Unpacking & Install Prep
Water
................................................................. Page 5
.................................... Page 6
.................................... Page 7
.................................. Page 8
..................................................... Page 10
.................................................................... Page 11
Electrical ................................................................. Page 12
Refrigeration - Remote Condenser Models ....................................... Page 13
Remote Condenser Location - Limits ........................................... Page 14
For The Installer: Remote Condenser
........................................... Page 15
Precharged Line Routing - Remote Only. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
Coupling Instructions - Remote Only
............................................ Page 17
Water - Remote Models ...................................................... Page 18
Final Check List ............................................................ Page 19
Controller
AutoAlert and Display Code
................................................................. Page 20
.................................................. Page 21
Component Indicator Lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
Electrical Component Details ................................................. Page 23
Refrigeration .............................................................. Page 24
Sequence of Operation
Refrigeration System
........................................................ Page 26
...................................................... Page 25
December 2014
Page 2
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Water System ............................................................. Page 27
Air Cooled Refrigeration ..................................................... Page 28
Water Cooled Refrigeration ................................................... Page 29
Remote Air Cooled Refrigeration ............................................... Page 30
How Ice Is Made ........................................................... Page 31
Technical Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 32
Heat Load, Charge and Condenser GPM ........................................ Page 33
Refrigeration System Pressures ............................................... Page 34
Maintenance .............................................................. Page 35
Maintenance: Scale Removal ................................................. Page 36
Maintenance: Check Top Bearing .............................................. Page 37
Bearing Service ............................................................ Page 38
Maintenance: Sensors ....................................................... Page 39
Service Diagnosis - Air Cooled ................................................ Page 40
Service Diagnosis - Water Cooled .............................................. Page 41
Service Diagnosis - Remote Air Cooled ......................................... Page 42
Service Diagnosis - Remote Air Cooled ......................................... Page 43
Service Diagnosis - Refrigeration System Failure .................................. Page 44
Service Diagnosis - Optional Ice Level Controls ................................... Page 45
Options .................................................................. Page 46
Options: Bin Thermostat ..................................................... Page 47
Repair Procedures: Bearing And Breaker ........................................ Page 48
Repair Procedures: The Auger ................................................ Page 49
Auger and Evaporator Inspection .............................................. Page 50
Repair Procedures: The Water Seal ............................................ Page 51
Repair Procedures: The gear reducer ........................................... Page 52
Repair Procedures: Replace the Evaporator: ..................................... Page 53
December 2014
Page 3
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Installation:
This machine is designed to be used indoors, in a
controlled environment. Operation outside the limits
listed here will void the warranty.
Air temperature limits
Minimum Maximum
Ice maker 50
Remote
o
F. / 10oC. 100oF. / 38oC.
-20oF. / -28oC. 120oF. / 48oC.
condenser
Water temperature limits
Minimum Maximum
All models 40
o
F. / 4.4oC. 100oF. / 38oC.
Water pressure limits (potable)
Minimum Maximum
All models 20 psi / 1.3 bar 80 psi / 5.5 bar
Water pressure limit to water cooled condenser is 150
PSI
Voltage limits
Minimum Maximum
115 volt 104 126
208-230 60 Hz 198 253
Minimum conductivity (RO water)
• 10 microSiemens / CM
Water Quality (ice making circuit)
• Potable
will have an impact on the time between cleanings
and ultimately on the life of the product. Water can
contain impurities either in suspension or in solution.
Suspended solids can be ltered out. In solution
or dissolved solids cannot be ltered, they must be
diluted or treated. Water lters are recommended
to remove suspended solids. Some lters have
treatment in them for dissolved solids.
Check with a water treatment service for a
recommendation.
RO water. This machine can be supplied with Reverse
Osmosis water, but the water conductivity must be no
less than 10 microSiemens/cm.
Potential for Airborne Contamination
Installing an ice machine near a source of yeast
or similar material can result in the need for more
frequent sanitation cleanings due to the tendency of
these materials to contaminate the machine.
Most water lters remove chlorine from the water
supply to the machine which contributes to this
situation. Testing has shown that using a lter that
does not remove chlorine, such as the Scotsman
Aqua Patrol, will greatly improve this situation.
Warranty Information
The warranty statement for this product is provided
separately from this manual. Refer to it for applicable
coverage. In general warranty covers defects
in material or workmanship. It does not cover
maintenance, corrections to installations, or situations
when the machine is operated in circumstances that
exceed the limitations printed above.
The quality of the water supplied to the ice machine
December 2014
Page 4
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Location:
While the machine will operate satisfactorily within the
listed air and water temperature limits, it will produce
more ice when those temperatures are nearer the
lower limits. Avoid locations that are hot, dusty, greasy
or conned. Air cooled models need plenty of room
air to breathe. Air cooled models must have at least
six inches of space at the back for air discharge;
however, more space will allow better performance.
Airow
Air ows into the front of the cabinet and out the back.
The air lters are on the outside of the front panel and
are easily removed for cleaning.
Bin compatibility
All models have the same footprint: 22 inches wide
by 24 inches deep. Conrm available space when
replacing a prior model.
Bin & adapter list:
• B322S – no adapter needed
• B330P or B530P or B530S – Use KBT27
• B842S – KBT39
• B948S – KBT38 for single unit
• B948S – KBT38-2X for two units side by side
• BH1100, BH1300 and BH1600 upright bins include
ller panels to accommodate a single 22 inch wide
ice machine. No adapter is needed.
Dispenser compatibility
Only nugget ice models may be used with ice
dispensers. Flaked ice is not dispensable.
Options
Side air ow kits KPFSA223 or KPFSA227 are
available for air cooled models. A lter kit for the
remote condenser is KERCF
Ice is made until it lls the bin enough to block an
infrared light beam inside the base of the machine. A
eld installed kit is available to adjust the maintained
ice level lower. The kit number is KVS.
The standard controller has excellent diagnostic
capabilities and communicates to the user through the
AutoAlert light panel, seen through the front panel.
Field installed kits are available that can log data and
provide additional information when the front panel is
removed. The kit numbers are KSBU and KSB-NU.
See page 21.
• ID150 – use KBT42 and KDIL-PN-150, includes
KVS, KNUGDIV and R629088514
• ID200 – use KBT43 and KNUGDIV and KVS
• ID250 – use KBT43 and KNUGDIV and KVS
See sales literature for other brand model ice and
beverage dispenser applications.
Other Bins & Applications:
Note the drop zone and ultrasonic sensor locations in
the illustrations on the next pages.
Scotsman ice systems are designed and
manufactured with the highest regard for safety
and performance. Scotsman assumes no liability of
responsibility of any kind for products manufactured
by Scotsman that have been altered in any way,
including the use of any part and/or other components
not specically approved by Scotsman.
Scotsman reserves the right to make design changes
and/or improvements at any time. Specications and
design are subject to change without notice.
December 2014
Page 5
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
N0422, F0522, N0622, F0822 Cabinet Layout
55.9
22.00 REF.
31.8
12.50
ULTRA SONIC
BIN LEVEL
SENSOR
OPTIONAL
58.1
22.89
37.1
14.60
61
24.00
REF.
3/8" FLARE
MACHINE
WATER
INLET
31.5
12.40
3/4" FPT
DRAIN
1.59
2.68
4
PLAN VIEW
41.9
16.50
6.8
5.5
2.17
ICE DROP
OPENING
16.5
6.48
.88 DIA.
ELECTRICAL
CONNECTION
44.6
17.55
49
19.31
WATER COOLED
BACK VIEW
.88 DIA.
ELECTRICAL
ACCESS
10.9
4.30
7.4
2.92
2.81
3/8" FPT
CONDENSER
WATER
INLET
39.2
15.45
8.6
3.38
1/2" FPT
CONDENSER
DRAIN
7.1
.88 DIA.
ELECTRICAL
CONNECTION
37.1
14.60
31.4
12.35
3/4" FPT
DRAIN
[58.5]
23.00
6.7
2.63
1.59
4
REMOTE COND.
LIQUID LINE
3/8" MALE CPLG.
20.3
8.00
27.3
10.75
2.17
LOUVER AND
REMOVABLE FILTER
A/C UNITS ONLY
55.9
22.00
REMOTE COND.
DISCHARGE LINE
1/2" MALE CPLG.
48.3
19.00
45.7
18.00
REMOTE COOLED
BACK VIEW
5.5
37.2
14.65
3/8" FLARE
MACHINE
WATER
INLET
31.5
12.40
3/4" FPT
DRAIN
6.8
2.68
1.59
AIR COOLED
BACK VIEW
61
24.00
2.2
.85
LEFT SIDE VIEW
4
5.5
2.17
December 2014
Page 6
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
N0922, F1222, N1322, F1522 Cabinet Layout
55.9
22.00 REF.
31.8
61
24.00
REF.
41.9
16.50
PLAN VIEW
12.50
ICE DROP
OPENING
16.5
6.48
10.9
4.30
ULTRA SONIC
BIN LEVEL
SENSOR
OPTIONAL
7.4
2.92
7.1
2.81
[68.6]
27.00
58.1
22.89
55.9
22.00
FRONT VIEW
LOUVER AND
REMOVABLE FILTER
A/C UNITS ONLY
3/8" FLARE
MACHINE
WATER
INLET
47.2
18.59
3/8" FLARE
MACHINE
WATER
INLET
34
13.39
3/4" FPT
DRAIN
4
1.59
6.8
2.67
17.55
5.5
2.17
44.6
.88 DIA.
ELECTRICAL
ACCESS
49
19.30
WATER COOLED
BACK VIEW
.88 DIA.
ELECTRICAL
ACCESS
3/8" FPT
CONDENSER
WATER INLET
15.44
8.6
3.37
1/2" FPT
CONDENSER
DRAIN
39.2
47.2
18.59
.88 DIA.
ELECTRICAL
ACCESS
3/8" FLARE
MACHINE
WATER
INLET
34
13.39
6.8
2.67
5.5
2.17
REMOTE COND.
LIQUID LINE
3/8" CPLG
4
1.59
18.8
7.39
27.8
10.93
REMOTE COND.
DISCHARGE LINE
1/2" CPLG
3/4" FPT
DRAIN
REMOTE COOLED
BACK VIEW
53.7
21.14
55.5
21.84
47.3
18.64
34
13.39
4.1
1.62
6.8
2.67
3/4" FPT
DRAIN
AIR COOLED
BACK VIEW
December 2014
Page 7
LEFT SIDE VIEW
61
24.00
2.3
.92
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
N0422, F0522, N0622, F0822 D Cabinet Layout
37.2
14.65
37
14.55
3/4" FPT
DRAIN
3/8" FLARE
MACHINE
WATER
INLET
31.4
12.35
3/8" FLARE
MACHINE
WATER
INLET
31.5
12.40
3/4" FPT
DRAIN
2.63
1.59
2.68
.88 DIA.
ELECTRICAL
CONNECTION
3/8" FPT
CONDENSER
WATER
INLET
39.1
15.40
6.7
44.6
17.55
49
4
6.8
4
1.59
19.31
WATER COOLED
5.5
2.17
AIR COOLED
BACK VIEW
5.5
2.17
BACK VIEW
.88 DIA.
ELECTRICAL
ACCESS
8.5
3.33
1/2" FPT
CONDENSER
DRAIN
.88 DIA.
ELECTRICAL
CONNECTION
37.1
14.60
3/4" FPT
DRAIN
REMOTE COND.
LIQUID LINE
3/8" MALE CPLG.
31.5
12.40
6.8
2.68
5.5
2.17
LEFT SIDE VIEW
24.00
REMOTE COND.
DISCHARGE LINE
1/2" MALE CPLG.
61
48
18.88
4
1.59
18.8
7.40
27.8
10.94
61
REMOTE COOLED
BACK VIEW
[2.4]
.92
[58.5]
23.00
24.00
24.00
REF.
REF.
61
41.9
41.9
16.50
16.50
57.7
22.70
55.9
22.00
55.9
55.9
22.00
22.00
PLAN VIEW
ICE DROP
OPENING
REF.
REF.
16.5
16.5
6.48
6.48
31.8
31.8
12.50
12.50
10.9
10.9
4.30
4.30
LOUVER AND
REMOVABLE FILTER
A/C UNITS ONLY
ULTRA SONIC
BIN LEVEL
SENSOR
OPTIONAL
7.4
7.4
2.92
2.92
2.81
2.81
7.1
7.1
FRONT VIEW
December 2014
Page 8
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
N0922, F1222, N1322, F1522 D Cabinet Layout
3/8" FLARE
MACHINE
WATER
INLET
47.2
18.59
3/8" FLARE
MACHINE
WATER
INLET
47.3
18.64
13.39
3/4" FPT
DRAIN
34
13.39
.88 DIA.
ELECTRICAL
ACCESS
3/8" FPT
CONDENSER
WATER INLET
39.2
34
6.8
2.67
45.8
18.05
50.3
1.59
4
WATER COOLED
5.5
2.17
19.80
BACK VIEW
.88 DIA.
ELECTRICAL
ACCESS
15.44
8.6
3.37
1/2" FPT
CONDENSER
DRAIN
.88 DIA.
ELECTRICAL
ACCESS
3/8" FLARE
MACHINE
WATER
INLET
47.2
18.59
34
13.39
2.17
REMOTE COND.
LIQUID LINE
3/8" CPLG
6.8
2.67
5.5
18.8
7.39
1.59
27.8
10.93
4
REMOTE COND.
DISCHARGE LINE
1/2" CPLG
3/4" FPT
DRAIN
REMOTE COOLED
BACK VIEW
[68.6]
27.00
55.5
21.84
61
61
24.00
24.00
REF.
REF.
41.9
41.9
16.50
16.50
57.7
22.70
55.9
55.9
22.00
22.00
PLAN VIEW
ICE DROP
OPENING
REF.
REF.
31.8
31.8
12.50
12.50
16.5
16.5
6.48
6.48
LOUVER AND
REMOVABLE FILTER
A/C UNITS ONLY
10.9
10.9
4.30
4.30
ULTRA SONIC
BIN LEVEL
SENSOR
OPTIONAL
7.4
7.4
2.92
2.92
7.1
7.1
2.81
2.81
2.67
1.59
6.8
3/4" FPT
DRAIN
4
AIR COOLED
BACK VIEW
LEFT SIDE VIEW
24.00
61
2.3
.91
55.9
22.00
FRONT VIEW
December 2014
Page 9
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Unpacking & Install Prep
Place on Bin or Dispenser
If reusing an existing bin, be sure that the bin is
in good shape and that the gasket tape on the
top is not torn up. Water leaks, not covered by
warranty, could result from a poor sealing surface. If
installing a remote or a remote low side, a new bin
is recommended due to the high cost to the user of
replacing an old bin when a remote system is on top.
Install the correct adapter, following the directions
supplied with that adapter.
Hoist the machine onto the adapter.
Note: The machine is heavy! Use of a mechanical lift
is recommended.
Position the machine on the bin or adapter. Secure
with straps from the hardware bag packed with the
machine, or those supplied with the adapter.
Remove any plastic covering the stainless steel
panels.
Note: The standard machine set up includes visible
on and off switches. Those can be covered up by
changing the bezel in the front panel’s trim strip. A
cover-up bezel is included with the hardware bag.
Remove any packaging, such as tape or foam blocks,
that may be near the gear reducer or ice chute.
Level the bin and ice machine front to back and left to
right by using the bin leg levelers.
Panel Removal A or B Series
1. Locate and loosen the two screws at the front edge
of the top panel.
2. Pull the front panel out at the top until it clears the
top panel.
3. Lift the front panel up and off the machine.
4. Remove two screws at the front of the top panel.
Lift up the front of the top panel, push the top panel
back an inch, then lift to remove.
5. Locate and loosen the screw holding each side
panel to the base. Left side panel also has a screw
holding it to the control box.
6. Pull the side panel forward to release it from the
back panel.
Button Switch Bezel A or B Series
To change bezels: Remove the front panel, and refer
to the instruction label on the inside of the front panel.
Push snaps of standard bezel in and pull the bezel
out of the front panel trim strip.
Locate other bezel. Push into the trim strip from the
front until it snaps into place. Return the front panel to
its original position and secure it to the cabinet.
Panel Removal D Series
1. Locate and loosen the two screws at the bottom of
the front panel.
2. Pull the front panel out at the bottom until it clears.
3. Lower the front panel down and off the machine.
4. Remove two screws at the front of the top panel.
Lift up the front of the top panel, push the top panel
back an inch, then lift to remove.
5. Locate and loosen the screw holding each side
panel to the base. Left side panel also has a screw
holding it to the control box.
6. Pull the side panel forward to release it from the
back panel.
December 2014
Page 10
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Water
The water supply for ice making must be cold, potable
water. There is a single 3/8” male are potable water
connection on the back panel. Water cooled models
also have a 3/8” FPT inlet connection for the water
cooled condenser. Chilled water can also be used for
this connection.
Drain
Water Inlet
Connection
There is one ¾” FPT condensate drain tting at the
back of the cabinet. Water cooled models also have a
½” FPT discharge drain connection on the back panel.
Tubing
Connect the potable water supply to the potable water
tting, 3/8” OD copper tubing or the equivalent is
recommended.
Water ltration is recommended. If there is an existing
lter, change the cartridge.
Connect the water cooled water supply to the
condenser inlet.
Note: Do NOT lter water to the water cooled
condenser circuit.
Connect the drain tube to the condensate drain tting.
Connect the water cooled condenser drain tube to the
condenser outlet.
Do not Tee ice machine drains into the drain tube
from the ice storage bin or dispenser. Back ups
could contaminate and / or melt the ice in the bin or
dispenser.
Follow all local and national codes for tubing, traps
and air gaps.
Drain
Connection
Condensate
Drain Tube
Building Drain
Air Cooled or Remote Plumbing
Condenser Inlet
Connection
Water Inlet
Connection
Drain
Connection
Condensate
Drain Tube
Water Cooled Plumbing
December 2014
Page 11
Condenser
Drain Tube
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Electrical
The machine does not include a power cord, one
must be eld supplied or the machine hard wired to
the electrical power supply. The junction box for the
Electrical power is connected to wires inside the
junction box in the back of the cabinet. Use a strain
relief and connect a ground wire to the ground screw.
electrical connection is on the back panel.
Do not use an extension cord.
Refer to the dataplate on the machine for minimum
circuit ampacity and determine the proper wire size
Follow all local and national codes.
for the application. The dataplate (on the back of the
cabinet) also includes the maximum fuse size.
Model Series Dimensions
w" x d" x h"
N0422A or F0522A-1 A or D 22 x 24 x 23 115/60/1 Air 15.2 20
N0422W or F0522W-1 A or D same 115/60/1 Water 14.4 20
N0622A or F0822A-1 A or B or D same 115/60/1 Air 18.3 25
N0622W or F0822W-1 A or B or D same 115/60/1 Water 16.7 25
N0622R or F0822R -1 A or B or D same 115/60/1 Remote 19.4 25
Voltage
Volts/Hz/
Phase
Condenser
Type
Min Circ
Ampacity
Max Fuse
Size or HACR
Type Circuit
Breaker
N0622A or F0822A-32 A or B same 208-230/60/1 Air 9.8 15
N0622W or F0822W-32 A or B or D same 208-230/60/1 Water 8.9 15
N0922A or F1222A-32 A 22 x 24 x 27 208-230/60/1 Air 12.5 15
N0922W or F1222W-32 A same 208-230/60/1 Water 11.3 15
N0922R or F1222R -32 A same 208-230/60/1 Remote 12.3 15
N0922A or F1222A -3 A same 208-230/60/3 Air 13.0 15
N0922R pr F1222R -3 A same 208-230/60/3 Remote 12.8 15
N0922A or F1222A-32 B or D same 208-230/60/1 Air 13.2 20
N0922W or F1222W-32 B same 208-230/60/1 Water 12 15
N0922R or F1222R -32 B or D same 208-230/60/1 Remote 13 20
F1222A-3 B or D same 208-230/60/3 Air 10.5 15
F1222R-3 B or D same 208-230/60/3 Remote 10.3 15
N1322A or F1522A -32 A or D same 208-230/60/1 Air 19.1 30
N1322W or F1522W -32 A or D same 208-230/60/1 Water 17.9 30
N1322R or F1522R -32 A or D same 208-230/60/1 Remote 18.9 30
N1322W A or D same 208-230/60-3 Water 11.15 15
December 2014
Page 12
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Refrigeration - Remote Condenser Models
Remote condenser models have additional installation
needs.
The correct remote condenser fan and coil must
be connected to the ice making head. Liquid and
discharge tubing connections are on the back of the
ice machine cabinet. Pre-charged tubing kits are
available in several lengths to accommodate most
installations. Order the one that just exceeds the
length needed for the installation.
The kit numbers are:
• RTE10
• RTE25
• RTE40
• RTE75
There are limits as to how far away from the ice
machine and where the remote condenser can be
located. See the next page for those limits.
Prior Head Prior Condenser New Head
NME654R ERC101 N0622R
FME804R ERC101 F0822R
NME954R ERC151 N0922R
FME1204R ERC151 F1222R
NME1254R ERC201 N1322R
FME1504R ERC201 F1522R
Do not reuse condenser coils contaminated with
mineral oil (used with R-502 for example). They will
cause compressor failure and will void the warranty.
The correct condenser must be used.
Ice Machine Model Condenser Model
F0822R-1 ERC111-1
F1222R-32, F1222R-3 ERC311-32
N0622R-1, N0822R-1 ERC111-1
N0922R-32, N1222R-3 ERC311-32
N1322R-32 ERC311-32
Note: A headmaster is required for all remote
condenser systems. Prior condensers did not have
a headmaster. New head / old condenser retrots
can use headmaster kit KPFHM. See chart below for
applications.
December 2014
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Air, Water or Remote Service Manual
Remote Condenser Location - Limits
Use the following for planning the placement of the
condenser relative to the ice machine
Location Limits - condenser location must not exceed
ANY of the following limits:
• Maximum rise from the ice machine to the
condenser is 35 physical feet
• Maximum drop from the ice machine to the
condenser is 15 physical feet
• Physical line set maximum length is 100 feet.
• Calculated line set length maximum is 150.
Calculation Formula:
• Drop = dd x 6.6 (dd = distance in feet)
• Rise = rd x 1.7 (rd = distance in feet)
• Horizontal Run = hd x 1 (hd = distance in feet)
• Calculation: Drop(s) + Rise(s) + Horizontal
Congurations that do NOT meet these requirements
must receive prior written authorization from
Scotsman to maintain warranty.
Do NOT:
• Route a line set that rises, then falls, then rises.
• Route a line set that falls, then rises, then falls.
Calculation Example 1:
The condenser is to be located 5 feet below the ice
machine and then 20 feet away horizontally.
5 feet x 6.6 = 33. 33 + 20 = 53. This location would be
acceptable
Calculation Example 2:
The condenser is to be located 35 feet above and
then 100 feet away horizontally. 35 x 1.7 = 59.5.
59.5 +100 = 159.5. 159.5 is greater than the 150
maximum and is NOT acceptable.
• Run = dd+rd+hd = Calculated Line Length
rd Max 35 feet
22.87"
dd Max 15 feet
Operating a machine with an unacceptable
conguration is misuse and will void the warranty.
40.35"
hd
Remote Condenser located
above ice machine.
Condenser Distance &
Location Schematic
17.15"
Remote Condenser located
below ice machine.
December 2014
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Air, Water or Remote Service Manual
For The Installer: Remote Condenser
Locate the condenser as near as possible to the
interior location of the ice machine. Allow it plenty of
space for air and cleaning: keep it a minimum of two
feet away from a wall or other rooftop unit.
Note: The location of the condenser relative to the ice
machine is LIMITED by the specication on the prior
page.
Roof penetration. In many cases a roong contractor
will need to make and seal the hole in the roof for the
line sets. The suggested hole diameter is 2 inches.
Meet all applicable building codes.
Roof Attachment
Install and attach the remote condenser to the roof
of the building, using the methods and practices of
construction that conform to the local building codes,
including having a roong contractor secure the
condenser to the roof
Power Supply from
Ice Machine
Remote Condenser
Pre-Charged
Refrigeration
Tubing
To Remote Condenser
Refrigeration Quick
Connects
December 2014
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Air, Water or Remote Service Manual
Precharged Line Routing - Remote Only
Do not connect the precharged tubing until all routing
and forming of the tubing is complete. See the
Coupling Instructions for nal connections.
1. Each set of pre-charged tubing lines contains
a 3/8” diameter liquid line, and a 1/2” diameter
discharge line. Both ends of each line have quick
connect couplings.
Note: The openings in the building ceiling or wall,
listed in the next step, are the minimum sizes
recommended for passing the refrigerant lines
through.
2. Have the roong contractor cut a minimum hole
for the refrigerant lines of 2”. Check local codes,
a separate hole may be required for the electrical
power supply to the condenser.
Caution: Do NOT kink the refrigerant tubing while
routing it.
3. Route the refrigerant tubes thru the roof opening.
Follow straight line routing whenever possible.
4. Excess tubing may EITHER be coiled up INSIDE
the building OR cut out prior to connection to the
ice maker and condenser.
If the excess tubing is cut out, after re-brazing the
tubing must be evacuated prior to connection to the
ice maker or condenser.
If the excess tubing is to be coiled, spiral it
horizontally to avoid excess trapping in the lines.
5. Have the roong contractor seal the holes in the
roof per local codes
Potable Water
Supply
Condensate Drain
To Remote
Fan Motor
Condenser
Power Supply to Condenser
Pre-Charged Tubing Line Set
December 2014
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Air, Water or Remote Service Manual
Coupling Instructions - Remote Only
The couplings on the ends of the pre-charged line
sets are self-sealing when installed properly.
Follow these instructions carefully.
These steps must be performed by an EPA Certied
Type II or higher technician.
Initial Connections
1. Remove the protector caps and plugs. Wipe the
seats and threaded surfaces with a clean cloth to
remove any possible foreign matter.
2. Lubricate the inside of the couplings, especially
the O-rings, with refrigerant oil. Oil packets are
supplied with Scotsman line sets.
3. Position the ttings on the correct connections on
the condenser and ice machine.
Final Connections:
4. Tighten the couplings together by hand until it is
certain that the threads are properly engaged.
6. Continue tightening the swivel nut until it bottoms
out or a very denite increase in resistance is felt
(no threads should be showing).
Critical Step!!!!!
7. Mark a line on the coupling nut and unit panel.
Then tighten the coupling nut an additional one-
quarter turn. The line will show the amount that
the nut turns. Do NOT over tighten.
5. Use two wrenches tighten the coupling until it
bottoms out or a denite increase in resistance is
felt. It is important that ONLY the nut on the pre-
charged tube be turned, or the diaphragms will
be torn out by the piercing knives and they will be
loose in the refrigeration system.
Note: As the couplings are tightened, the diaphragms
in the quick connect couplings will begin to be
pierced. As that happens, there will be some
resistance to tightening the swivel nut.
December 2014
Page 17
8. After all connections have been made, and after
the receiver outlet valve has been opened (do not
open yet), check the couplings for leaks.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
To Remote Condenser
Air, Water or Remote Service Manual
Water - Remote Models
The water supply for ice making must be cold, potable
water. There is a single 3 8” male are potable water
connection on the back panel.
Backow
The design of the oat valve and reservoir prevents
potable water backow by means of a 1" air gap
between the reservoir's maximum water level and the
oat valve water inlet orice.
Drain
There is one ¾” FPT condensate drain tting at the
back of the cabinet.
Attach Tubing
1. Connect the potable water supply to the potable
water tting, 3 / 8” OD copper tubing or the
equivalent is recommended.
2. Change the cartridge on the existing water lter (if
any present).
Do not Tee ice machine drains into the drain tube
from the ice storage bin or dispenser. Back ups
could contaminate and / or melt the ice in the bin or
dispenser. Be sure to vent the bin drain.
Follow all local and national codes for tubing, traps
and air gaps.
3. Connect the drain tube to
the condensate drain tting.
Use rigid tubing.
4. Vent the drain tubing
between the ice machine
and the building drain.
Potable Water
Connection
Drain Vent
Condensate Drain
December 2014
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Air, Water or Remote Service Manual
Final Check List
After connections:
1. Wash out the bin. If desired, the interior of the bin
could be sanitized.
2. Locate the ice scoop (if supplied) and have it
available for use when needed.
3. Remote only: Switch on the electrical power to
warm up the compressor. Do not start the machine
for 4 hours.
Final Check List:
1. Is the unit located indoors in a controlled
environment?
2. Is the unit located where it can receive adequate
cooling air?
3. Has the correct electrical power been supplied to
the machine?
4. Have all the water supply connections been
made?
5. Have all the drain connections been made?
6. Has the unit been leveled?
7. Have all unpacking materials and tape been
removed?
8. Has the protective covering on the exterior panels
been removed?
9. Is the water pressure adequate?
10. Have the drain connections been checked for
leaks?
11. Has the bin interior been wiped clean or sanitized?
12. Have any water lter cartridges been replaced?
Caution: Do not place anything on top of the ice
machine, including the ice scoop. Debris and moisture
from objects on top of the machine can work their way
into the cabinet and cause serious damage. Damage
caused by foreign material is not covered by warranty.
There are four indicator lights at the front of the
machine that provide information on the condition
of the machine: Power, Status, Water, De-scale &
Sanitize.
Power
Status
No Water
Time to Clean
On
Off
Note: If the De-Scale & Sanitize light is ON, following
the cleaning process will clear the light for another
cleaning time internal.
Two button switches are at the front – On and Off. To
switch the machine OFF, push and release the Off
button. The machine will shut off at the end of the next
cycle. To switch the machine ON, push and release
the On button. The machine will go through a start up
process and then resume ice making.
Lower Light and Switch Panel - D Series
This user accessible panel provides important
operational information and duplicates the lights and
switches on the controller. It also allows access to the
On and Off buttons that operate the ice machine.
Sometimes access to the switches should be limited
to prevent unauthorized operation. For that purpose a
xed panel is shipped in the hardware package. The
xed panel cannot be opened.
13. Have all required kits and adapters been properly
installed?
Control and Machine Operation
Once started, the ice machine will automatically make
ice until the bin or dispenser is full of ice. When ice
level drops, the ice machine will resume making ice.
December 2014
Page 19
To install the xed panel:
1. Remove the front panel and remove the bezel.
2. Spread the bezel frame open and remove original
door, insert xed panel into bezel. Be sure it is in
the closed position.
3. Return bezel to panel and install panel on unit.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Controller
Power Status De-scaleWater
Location of Optional
Vari-Smart (KVS)
Sanitize
On Off
Technician Section
Clean
Code
Display
Control Operation - See Manual
Water Light On
machine.
De-Scale Light On
machine.
Test Mode
then depress Clean for 3 seconds.
Recall Diagnostic Codes
for 3 seconds. Press Clean repeatedly to
go from most recent to oldest of 10.
Clear Diagnostic Codes
depress and hold Clean and Off for 3
seconds.
- Depress
Reset from Code 1, 2, 3 or 4
Off then Depress On.
- Restore water supply to
- Clean and sanitize
- Depress Off for 3 seconds,
- Depress Off
- Switch unit off,
Component Operation Indicator Lights
Code Description
F
. . . . . . . . Freeze Mode
flashes . . Freeze Mode is Pending
F
.... ....Bin is Full
b
.... ....Clean Cycle
C
.... ....Board Locked
L
.... ....Test Mode
d
.... ....Off
O
.... ....Self Test Failed
E
flashes. . No ice sensed - Retrying
1
. . . . . . . . . No ice sensed - Shut Down
1
flashes . Auger motor high load - Retrying
2
. . . . . . . . Auger motor high load - Shut Down
2
. . . . . . . . No water in reservoir
3
. . . . . . . . Refrigeration pressure too high / low
4
All 4 Upper Lights Flashing
Locked Out - Contact Leasing Company
- Unit Remotely
02-4407-01
Location of Optional
Smart-Board
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Air, Water or Remote Service Manual
AutoAlert and Display Code
The controller uses indicator lights to provide the user
with information on Power, Status, Water or Time to
Clean. These are known as the AutoAlert panel.
Code Description
. . . . . . . . Freeze Mode
ashes . . Freeze Mode is Pending
. . . . . . . . Bin is Full
. . . . . . . . Clean Cycle
. . . . . . . . Board Locked
. . . . . . . . Test Mode
. . . . . . . . Off
. . . . . . . . Self Test Failed
Prodigy Plus D series have a similar panel, but it is at
the lower left of the front panel.
Additionally a 7 segment display is under the front
panel. It shows operational status or problem codes.
The Power light is on Green anytime the machine is
supplied with electrical power.
The Status light is on Green when the machine has
been switched to the ice making mode. It will also
blink green if the unit has been equipped with an
optional Smart-Board AND the Smart-Board has
detected potential malfunction.
The Water light will blink Red if the water sensor does
not detect water.
The De-Scale / Sanitize light will glow Yellow when
the time to clean timer has reached its set time since
the last cleaning. It also blinks during the rst part of
the cleaning mode
ashes. . No ice sensed - Retrying
. . . . . . . . . No ice sensed - Shut Down
ashes . Auger motor high load - Retrying
. . . . . . . . Auger motor high load - Shut Down
. . . . . . . . No water in reservoir
. . . . . . . . Refrigeration pressure too high / low
December 2014
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Air, Water or Remote Service Manual
Component Indicator Lights
The controller has six lights to indicate component
operation:
Bin Eyes Blocked
• This light is ON when the photo-electric ice sensors
have been blocked by ice.
Water Present
• This light is ON when the water sensor has water
touching it.
Comp
• This light is ON when the compressor is operating.
Water Dispense
• Not used on this model., not listed on D series
Auger
• This light is ON when the auger motor is operating.
Ice Dispense
• Not used this model, not listed on D series
Control Button Use
Recall diagnostic code:
• Hold off button in for 3 seconds. Release.
• Press and release the Clean button to cycle through
each of the last 10 error codes from most recent to
oldest.
Clear diagnostic code:
• Hold Clean and Off buttons in for 3 seconds to clear
all prior codes.
Reset control:
• Depress and release Off, then depress and release
On
Start Test Mode:
• Hold Off button in for 3 seconds. Release.
• Hold Clean button in for 3 seconds. Release.
Lock / Unlock control:
• Hold On button in for 3 seconds, keep holding then
press and release Off twice.
December 2014
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Air, Water or Remote Service Manual
Electrical Component Details
Compressor
• Operated by the compressor contactor.
Contactor
• Operated by the controller. Line voltage coil. When
energized the Compressor indicator light will be ON.
Fan Motor(s)
• Operated by the contactor
High pressure cut out
• All models have a high pressure cut out switch that
signals the controller if the discharge pressure is too
high. It is an automatic reset.
Low pressure switch
• On remote models it controls the compressor
contactor. Will close on pressure rise, pressure rises
when liquid line valve opens.
Opens at a lower pressure.
Water Level Sensor
• Two probe conductivity sensor. When water touches
it the Water Present light will be ON.
Auger Motor
• Four pole, split phase motor that operates the gear
reducer. When operating, the Auger indicator light
will be ON. The gear reducer lowers the input speed
from about 1500 RPM to 11. Auger rotation is CCW
when viewed from above.
Photo-electric eyes
• An LED emitter and photo transistor receiver set.
Pulsed infrared light is continuously emitted and
received to detect ice in the chute.
Lower light and switch panel
• Used only on Prodigy Plus D series. Duplicates
controller lights and switches.
• Air and Water cooled models use a low pressure cut
out.
Liquid line valve
• Remote only. Opened by the controller to start ice
making. Closed to shut unit off. Line voltage coil.
Controller
• Senses water, ice making, discharge pressure,
low side pressure, and auger amps. Controls
compressor contactor, fan motor, and auger motor.
Indicates status and component operation.
Transformer
• 12 volt secondary, supplies power to controller only.
The Power light will be ON when the transformer
has provided 12 volts AC to the controller.
December 2014
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Air, Water or Remote Service Manual
Refrigeration
Refrigerant: R-404A
Compressors: Copeland or Tecumseh hermetic by
model
Expansion valve: Adjustable, internally equalized.
Condensers: Air is forced draft type, water cooled is
counterow type.
Air lters: Surface mounted to panels. Filter media
removable without removing panels.
Fan blades: Reduced vibration blades in most air
cooled models.
Remote Systems: Head pressure control valve in
condenser. Headmaster protected by lters (not
lter driers). Controller pumps unit down by closing
the liquid line valve. Pump down switch controls the
compressor.
High pressure cut out. WC, RC, AC
Low pressure cut out, WC, AC
Pump down pressure switch, RC
Evaporator: Coil-wrapped stainless steel with a
stainless steel, double-ight auger inside.
Initial Start Up
1. Turn the water supply on.
2. Switch the electrical power on. Conrm voltage is
correct for the model.
3. Push and release the On button. The machine will
start in about two minutes.
4. Soon after starting, air cooled models will begin
to blow warm air out the back of the cabinet and
water cooled models will drain warm water from
the condenser drain tube. Remote models will be
discharging warm air from the remote condenser.
After about 5 minutes, ice will begin to drop into the
bin or dispenser.
5. Check the machine for unusual rattles. Tighten any
loose screws, be sure no wires are rubbing moving
parts. Check for tubes that rub.
6. Fill out the warranty registration form and either le
it on line or mail it.
7. Notify the user of the maintenance requirements
and whom to call for service.
Change De-Scale Notication Interval
This feature is accessible only from standby
(Status Light Off).
1. Press and hold Clean button for 3 seconds. This starts the Time to Clean Adjustment State and displays
the current time to clean setting.
2. Press the clean button repeatedly to cycle through the 4 possible settings:
• 1 year (8760 hours)
• 0 (disabled)
• 4 months (2920 hrs)
• 6 months (4380 hours) (default)
3. Push Off to conrm the selection.
December 2014
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Air, Water or Remote Service Manual
Sequence of Operation
The ice machine’s function is to continuously produce
ice until the ice level control senses that there is
enough ice in the bin or dispenser. There are three
systems that operate in close coordination to make
ice. They are the electrical system, the water system
and the refrigeration system.
The electrical system includes the compressor, auger
drive assembly, fan motor and control system (the
auger drive assembly includes the gear reducer,
auger and top bearing).
The water system includes the oat valve, reservoir,
inside of the evaporator and the drain tubing.
The refrigeration system includes the compressor,
condenser, expansion valve and outside of the
evaporator.
Control System
As noted, the electrical system includes a control
system. The control system consists of a controller
and sensors. It automatically operates the machine
to make ice only when needed. It also monitors the
refrigeration system, water system and auger drive
assembly for proper function.
Sensors are used to monitor the machine. A continuity
probe water sensor is located near the oat reservoir.
A tube from the oat tank allows water to touch
the sensor’s two stainless steel probes, making
a connection between them. That signals to the
controller the presence of water. The controller will not
allow the machine to make ice unless this sensor's
probes have continuity.
A set of photo-electric eyes (infrared emitter and
receiver) is located at the base of the ice discharge
chute. They are used to sense ice. As ice is made,
it falls through the infrared beam from the emitter,
causing the receiver to detect it. When ice has lled
the bin, the top of the ice pile will continuously stop
the beam, breaking the light to the receiver, and that
signals to the controller that the bin is full
Additionally, the control system uses the photo-eyes
to conrm ice making. As the machine makes ice,
the falling ice causes breaks in the infrared beam.
In operation, the rst 6 minutes of ice making are
ignored to give the machine time to start producing
ice. After that, the controller will look for a minimum of
one beam-break in 10 minutes. If this is not achieved,
the control will shut the machine down for 10 minutes
and add the incident to a strike counter. During the
wait period, a 1 will be ashing in the code display.
After the 10 minute wait, the machine will restart. If no
ice is sensed three times in a row, the machine will
shut down on a no ice error and must be manually
reset. The 1 in the code display will change from
ashing to continuous.
If ice is detected within 10 minutes after any restart,
the strike counter will be reset to zero, and the code
display will show F, for freeze mode.
The auger drive motor amperage is monitored by
the controller. If the auger motor is overloaded
and is drawing too many amps, the controller will
shut the machine off, and a 2 will be ashing in the
code display. The controller will attempt a restart of
the auger motor in 4 minutes. If during the rst 60
seconds after restart the auger motor current stays
within limits, the compressor is restarted and the
machine returns to normal operation. If the auger
motor’s current is excessive within 60 seconds after
the restart, the process will be repeated once more.
If during that try the current is still excessive the
machine shuts down and must be manually reset.
The 2 in the code display will change from ashing to
continuous.
Water System
The water level in the evaporator is maintained by a
oat valve in a separate reservoir. As ice is made, and
water is used, the water level in the reservoir drops,
opening the oat valve. The open valve adds water to
the reservoir to resupply it.
December 2014
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Air, Water or Remote Service Manual
Refrigeration System
The refrigeration system is monitored by the high
pressure cut out switch. If the refrigeration discharge
pressure exceeds the pre-set point of the switch, it will
open, causing the controller to shut the machine off.
The discharge pressure control is an automatic reset
switch, and after the discharge pressure drops, the
controller will restart the unit. A 4 in the code display
indicates high discharge pressure.
The refrigeration system is also monitored by the low
pressure cut out switch. If the refrigeration low side
pressure drops below a pre-set point, the switch will
open. When that occurs, the controller will shut the
machine off. The low pressure cut out switch is an
automatic reset switch and after the low side pressure
increases to the cut in point, the controller will restart
the machine. A 4 will show in the code display to
indicate low suction pressure.
Note: the low pressure control for a Remote is a pump
down switch, and when it opens the compressor stops
and no change is noted by the controlle
Electrical Sequence
Pushing and releasing the On button starts the
machine. The sequence of operation begins with
water. Water must be sensed or the controller will
not start the ice making process. If there is no water,
a 3 will show it the code display. If there is water,
and there is nothing blocking the infrared beam of
the ice sensors, the controller will start the machine.
A ashing F will show in the code display while the
auger drive motor starts up. When it has started, the
compressor will start and the ashing F will change
to a continuous F. This continues until the ice level
control senses a full bin, at that time the compressor
is shut off, and the auger motor continues to operate
for a short time to clear the evaporator of any left over
ice. A b will show in the code display.
Indicator Lights & Their Meanings
Power Status Water De-Scale &
Sanitize
Steady Green Normal Normal - -
Blinking Green Self Test Failure Switching on or
- -
off. When Smart-
Board used,
machine attention
recommended.
Blinking Red - Diagnostic shut
Lack of water -
down
Yellow - - - Time to descale and
sanitize
Blinking Yellow - - - In Cleaning Mode
Light Off No power Switched to Off Normal Normal
December 2014
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Air, Water or Remote Service Manual
Water System
Water enters the machine through the 3/8" male are
at the rear of the cabinet, goes to the water reservoir
which it enters through the oat valve.
The oat valve maintains a constant level of water in
the reservoir and evaporator, as water ows out the
bottom of the reservoir tank to ll the evaporator.
Reservoir overow or evaporator condensation is
routed to the drain. Water cooled models have a
separate water circuit for the cooling water: it nters the
tting at the rear, goes to the water regulating valve,
then to the water cooled condenser and down the
drain.
Water Level
Water Level: The correct water level should be
checked when the machine is making ice. Check
the water level in the reservoir and compare it to the
horizontal line molded into the side of the reservoir.
The correct level should be between 1/8” above and
1/4” below the line. If needed, bend the oat arm up
or down to adjust the water level.
Note: Water sensor moved to reservoir in 2012, water
inlet hose and reservoir revised in 2013 and 2014.
Float Valve
Water Sensor
Condensate
Pan
Water Inlet to Evaporator
Water System Schematic
December 2014
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Air, Water or Remote Service Manual
Air Cooled Refrigeration
The compressor concentrates the heat from ice
making into high pressure, hot discharge gas. The
high pressure forces the gas to the water cooled
condenser.
At the condenser, refrigerant gas ows through a
serpentine tube that is connected to ns. Room air
is forced by a fan motor through the ns. As the
relatively cooler air comes in contact with the ns and
tubing, heat ows from the hot refrigerant gas into the
ns and tubing and into the cooler air passing over
them. When the refrigerant cools, it condenses into a
liquid.
From the condenser the high pressure liquid
refrigerant ows through the liquid line to the metering
device - a thermostatic expansion valve.
At the expansion valve, liquid refrigerant passes from
a high pressure zone to one of relatively low pressure,
and in the low pressure zone it evaporates.
The low pressure zone where the refrigerant
evaporates is the evaporator. The evaporator is a
vertical metal tube surrounded by a coil of tubing,
which the refrigerant ows through. As refrigerant
evaporates in the coil, it absorbs heat from the metal
parts of the evaporator and the water inside it. As the
auger inside the evaporator turns, ice is continuously
forced out of the evaporator and make up water ows
in.
From the evaporator, the refrigerant, carrying the
heat from ice making, ows back to the compressor
through the suction line, and the cycle continues
Air Cooled Condenser
TXV
Discharge Line
Suction Line
Evaporator
Compressor
Liquid Line
Refrigeration Schematic
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Water Cooled Refrigeration
The compressor concentrates the heat from ice
making into high pressure, hot discharge gas. The
high pressure forces the gas to the water cooled
condenser.
At the condenser, refrigerant gas and water ow
through connected parallel tubes, but in opposite
directions. Heat moves from the hotter discharge gas
to the cooler water, and the refrigerant condenses into
a liquid. The water ows out of the condenser warmed
up to about 110
o
F. Water ow is controlled by a water
regulating valve on the inlet of the condenser's water
circuit.
From the condenser the high pressure liquid
refrigerant ows through the liquid line to the metering
device - a thermostatic expansion valve.
At the expansion valve, liquid refrigerant passes from
a high pressure zone to one of relatively low pressure,
and in the low pressure zone it evaporates.
The low pressure zone where the refrigerant
evaporates is the evaporator. The evaporator is a
vertical metal tube surrounded by a coil of tubing,
where the refrigerant ows through. When the
refrigerant evaporates in the coil, it absorbs heat from
the metal parts of the evaporator and the water inside
it. As the auger inside the evaporator turns, ice is
continuously forced out of the evaporator and make
up water ows in.
From the evaporator, the refrigerant, carrying the
heat from ice making, ows back to the compressor
through the suction line, and the cycle continues.
Water Cooled
Condenser
Liquid Line
TXV
Suction Line
Evaporator
Discharge Line
Compressor
Refrigeration Schematic
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Remote Air Cooled Refrigeration
The compressor concentrates the heat from ice
making into high pressure, hot discharge gas. The
high pressure forces the gas to the remote condenser.
At the remote condenser, the discharge gas will
either enter the coils or bypass them through the
headmaster. The head master maintains a minimum
discharge pressure to keep ash gas out of the liquid
line.
From the condenser, refrigerant ows to the receiver.
It can be either liquid or gas, depending upon the
modulation of the head master. From the receiver,
liquid refrigerant ows to the thermostatic expansion
valve. At the expansion valve, liquid refrigerant
passes from a high pressure zone to one of relatively
low pressure, and in the low pressure zone it
evaporates, absorbing heat.
From the evaporator, the refrigerant, carrying the
heat from ice making, ows back to the compressor
through the suction line, and the cycle continues.
When enough ice has been made, the control system
closes the liquid line solenoid valve and the machine
pumps down, forcing refrigerant out of the low side
until the pump down pressure switch stops the
compressor.
Remote Air Cooled
Condenser
Receiver
Headmaster
Liquid Line
Refrigeration Schematic
TXV
Discharge Line
Suction Line
Compressor
Liquid Line Solenoid Valve
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
How Ice Is Made
Refrigeration effect is applied to the water between
the auger and the evaporator. When that water's
temperature drops to its freezing point, ice crystals
form throughout it. A continually rotating auger moves
the ice up the evaporator tube. At this point the ice is
a soft ribbon that lls the space between the auger
and evaporator.
At the top of the evaporator tube, ice emerges from
the water and is forced or extruded through relatively
small openings. This has the effect of squeezing out
excess water and compressing the ice together into a
useable form.
Ice owing from the openings is
forced to one side, breaking it into
smaller lengths. An ice sweep
moves them to the chute.
Flaked ice machines have 6 oblong and curved slots
that ice ows from, and they produce a softer, wetter
ice form.
Nugget ice machines have 16 round holes that form
the nugget, which is more heavily compressed and
contains less water than freshly made aked ice.
Cutaway View of Bearing
Nugget or
Flaked Ice
Refrigerated Tubing
Foam Insulation
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Technical Information
Pressure Switches
Cut IN (PSIG) Cut OUT (PSIG)
High pressure switch, AC, WC, RC 350 450
Low pressure switch, AC or WC 30 15
Low pressure pump down (remote) 30 15
Compressor Amp Draw
Model Series Voltage Brand Amps
N0422, F0522 A or D 115 Tecumseh 5.9-6.1
N0622, F0822 A 115 Tecumseh 5.9-6.1
N0622, F0822 A 230 Tecumseh
N0622, F0822 B or D 115 Copeland 7.1-7.4
N0622, F0822 B or D 230 Copeland
N0922, F1222 A 230 single phase Tecumseh 4.7-5.1
N0922, F1222 A 230 three phase Copeland 3.9-4.1
N0922, F1222 B or D 230 single phase Copeland 4.4 - 5
N0922, F1222 B or D 230 three phase Copeland 3.6-3.8
N1322, F1522 A or D 230 single phase Copeland 6.9-7.2
N1322, F1522 A or D 230 three phase Copeland
Auger Drive Motor Amps
Model Ice Machine Voltage Auger Motor Amps Control Cut Out
Amps
N0422 or F0522 115 3.4 - 4 6
N0622 or F0822 115 3.4 - 4 6
N0622 or F0822 230 1.1 - 2 3
N0922 or F1222 230 single or three phase 1.1 - 2 3
N1322 or F1522 230 single or three phase 1.1 - 2 3
Components
• Motor: 115 volt or 230 volt versions. 1/4 HP split phase.
• Gear Case: Aluminum die cast, service part has no bearings
• First gear: Phenolic for noise suppression. Pressed on ball bearing.
• Second gear: Steel. Pressed on ball bearing.
• Output gear: Steel, pressed shaft and bearings. Supplied with gear case cover.
• Output shaft. Provides engagement to auger, uses centering pin for auger alignment. Supplied with gear
case cover.
• Input or motor shaft seal. Labyrinth type with o-ring to seal rotor bearing to cover.
• Output shaft seal. Lip seal, supplied with gear case cover.
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Heat Load, Charge and Condenser GPM
Heat Load - Average heat load for air conditioning
unit sizing
Model BTUH
N0422, F0522A 5000
N0622, F0822A 7100
N0922, F1222A 10500
N01322, F1522A 16000
Water Cooled Water Use - Condenser Only
Model GPM @ Supply
Water Temp
N0422,
.14 @ 50
o
F water .23 @ 70oF water
GPM @ test
ambient
F0522W
N0622,
.21 @ 50
o
F water .40 @ 70oF water
F0822W
N0922,
.68 @ 50
o
F water .76 @ 70oF water
F1222W
N01322,
.32 @ 50
o
F water .59 @ 70oF water
F1522W
Refrigerant Charge
Model Series R-404A (oz)
N0422A,
A or D 14
F0522A
N0422W,
A or D 11
F0522W
N0622A,
A or B or D 14
F0822A
N0622W,
A or B or D 11
F0822W
N0622R,
A or B or D 192
F0822R
N0922A,
A 18
F1222A -32
N0922W,
A 20
F1222W -32
N0922A,
A 20
F1222A -3
N0922W,
A 22
F1222W -3
N0922A,
B or D 22
F1222A
N0922W,
B or D 28
F1222W
N0922R,
A or B or D 192
F1222R
N1322A,
A or D 34
F1522A
N1322W,
A or D 18
F1522W
N1322R,
A or D 192
F1522R
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Refrigeration System Pressures
Refrigeration system pressures of continuous ow ice machines do not vary a great deal while in operation.
They will vary by model, condenser type and ambient.
70/50 90/70
Model Suction (PSIG) Discharge (PSIG) Suction (PSIG) Discharge (PSIG)
N0422A 37-39 235-245 45-46 255-265
N0422W 38-40 240-250 38-42 240-250
F0522A 37-39 235-245 40-42 250-260
F0522W 37-39 240-250 39-41 240-250
N0622A 28-31 235-245 35-40 275-285
N0622W 29-32 240-250 30-34 240-250
N0622R 35-37 240-250 36-38 250-260
F0822A 28-31 235-245 34-39 285-295
F0822W 29-32 240-250 30-34 240-250
F0822R 35-37 240-250 36-38 250-260
N0922A 22-25 205-215 32-33 280-290
N0922W 22-25 240-250 31-33 240-250
N0922R 28-30 240-250 31-32 245-255
F1222A 22-25 205-215 31-33 280-290
F1222W 22-25 240-250 30-33 240-250
F1222R 28-30 240-250 31-32 245-255
N1322A 22-25 205-215 30-32 295-305
N1322W 26-28 240-250 25-28 240-250
N1322R 29-30 230-240 30-31 245-255
F1522A 22-25 205-215 28-32 295-305
F1522W 26-28 240-250 25-28 240-25
0
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Maintenance
This ice machine needs ve types of maintenance:
• Air cooled and remote models need their air lters
or condenser coils cleaned regularly.
• All models need scale removed from the water
system.
• All models require regular sanitization.
• All models require sensor cleaning.
• All models require a top bearing check.
Maintenance Frequency:
Air lters: At least twice a year, but in dusty or greasy
air, monthly.
Scale removal. At least twice a year, in some water
conditions it might be every 3 months.
Sanitizing: Every time the scale is removed or as
often as needed to maintain a sanitary unit.
Sensor Cleaning: Every time the scale is removed.
Maintenance: Remote air cooled condenser
The condenser ns will occasionally need to be
cleaned of leaves, grease or other dirt. Check the coil
every time the ice machine is cleaned.
Maintenance: Exterior Panels
The front and side panels are durable stainless steel.
Fingerprints, dust and grease will require cleaning
with a good quality stainless steel cleaner.
Note: If using a sanitizer or a cleaner that contains
chlorine on the panels, after use be sure to wash the
panels with clean water to remove chlorine residue.
Maintenance: Water lters
If the machine has been connected to water lters,
check the cartridges for the date they were replaced
or for the pressure on the gauge. Change cartridges
if they’ve been installed more than 6 months or if the
pressure drops too much during ice making.
Top bearing check: At least twice a year or every time
the scale is removed.
Maintenance: Air lters
1. Pull air lter(s) from panel.
2. Wash the dust and grease off the lter(s).
3. Return it(them) to their original position(s).
Do not operate the machine without the lter in place
except during cleaning.
Maintenance: Air cooled condenser
If the machine has been operated without a lter the
air cooled condenser ns will need to be cleaned.
They are located under the fan blades. The services
of a refrigeration technician will be required to clean
the condenser.
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Maintenance: Scale Removal
Note: Following this procedure will reset the de-scale
and sanitize light.
1. Remove front panel.
2. Push and release the Off button.
3. Remove ice from bin or dispenser.
4. Turn the water supply to the ice machine OFF.
5. Drain the water and evaporator by disconnecting
the leg of the hose connected to the water sensor
and draining it into the bin. Return the hose to its
original position
6. Remove the water reservoir cover.
7. Mix a solution of 8 ounces of Scotsman Clear One
Scale Remover and 3 quarts of 95-115 degree F.
potable water.
Ice machine scale remover
contains acids. Acids can
cause burns.
If concentrated cleaner
comes in contact with
skin, ush with water. if
swallowed, do NOT induce
vomiting.
Give large amounts of
water or milk. Call Physician
immediately. Keep out of the
reach of children.
12. Drain the water reservoir and evaporator by
disconnecting the leg of the hose connected to
the water sensor and draining it into the bin or a
bucket. Return the hose to its original position.
Discard or melt all ice made during the previous
step.
13. To sanitize the water system, mix a locally
approved sanitizing solution. An example of a
sanitizing solution is mixing one ounce of liquid
household bleach and two gallons of 95 – 115
degree F. water.
14. Pour the sanitizing solution into the reservoir.
15. Push and release the On button.
16. Switch the water supply to the ice machine on.
17. Operate the machine for 20 minutes.
18. Push and release the Off button.
19. Wash the reservoir cover in the remaining
sanitizing solution.
20. Return the reservoir cover to its normal position.
21. Melt or discard all ice made during the sanitizing
process.
22. Wash the inside of the ice storage bin with the
sanitizing solution.
23. Push and release the On button.
8. Pour the scale remover solution into the reservoir.
Use a small cup for pouring.
9. Push and release the Clean button: the auger
drive motor and light are on, C is displayed and
the De-scale light blinks. After 20 minutes the
compressor will start.
10. Operate the machine and pour the scale remover
into the reservoir until it is all gone. Keep the
reservoir full. When all the scale remover solution
has been used, turn the water supply back on.
After 20 minutes of ice making the compressor
and auger motor will shut off.
11. Turn the water supply to the ice machine OFF
December 2014
Page 36
24. Return the front panel to its original position and
secure with the original screws.
Note: If the reservoir is not kept full during step 10,
the scale removal process will be incomplete and the
de-scale light will remain on.
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Maintenance: Check Top Bearing
This task should only be done by a qualied service
technician
The bearing in the breaker should be checked at least
two times per year.
Check the bearing by:
1. Removing the bail clamp and ice chute cover
Bail Clamp
Breaker
Cover
2. Unscrewing the ice sweep
3. Removing the water shed & unscrewing the
breaker cover (left hand threads).
Inspect the top of the bearing. When new the grease
is white, over time some gray will appear over the
rollers, that is normal. Add grease to replace the gray
grease or if gaps between rollers are visible. If grease
is watery, all gray or rust is visible, have the bearing
replaced. See the next page for more information.
Note: When checking the top bearing, always inspect
the drip pan for water seal leaks. If water is present
in the drip pan, service the water seal and check the
gear reducer's lubricant. See the next page.
December 2014
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Bearing Service
This task should only be done by a qualied service
technician
If the grease is uniformly white, no further action is
needed. If very gray, rusty, wet or has any embedded
metal, have the bearing replaced.
Grease
Drip Pan
If the bearing only needs grease, or to conrm the
quality of the grease low in the bearing, inject grease
into the lower part of the bearing using Scotsman
grease needle pn 02-3559-01 and Scotsman bearing
grease cartridge, pn A36808-001. Be sure to inject
grease evenly and thoroughly.
Needle, part number
02-3559-01
Change De-Scale Notication Interval
This feature is accessible only from standby
(Status Light Off).
1. Press and hold Clean button for 3 seconds.
This starts the Time to Clean Adjustment State and
displays the current time to clean setting.
2. Press the clean button repeatedly to cycle through
the 4 possible settings:
• 1 year
• 0 (disabled)
• 4 months
• 6 months(default)
3. Push Off to conrm the selection.
December 2014
Page 38
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Maintenance: Sensors
The control that senses bin full and empty is a photoelectric eye, therefore it must be kept clean so it
can “see”. At least twice a year, remove the ice level
sensors from the base of the ice chute, and wipe the
inside clean, as illustrated.
1. Remove front panel.
2. Pull photo eye holders forward to release them.
3. Wipe clean as needed. Do not scratch the photoeye portion.
3. Remove the hose from the water sensor, use a
hose clamp pliers for this.
Probes
4. Loosen mounting screw and release the water
sensor from the frame of the unit.
5. Wipe probes clean,
Check Gear Reducer Lubricant
4. Return the eye holders to their normal positions
and return the front panel to its original position.
Note: Eye holders must be mounted properly. They
snap into a centered position and are properly located
when the wires are routed to the back and the left eye
is the one with 2 wires at the connector.
The ice machine senses water by a probe located
near the water reservoir. At least twice a year, the
probe should be wiped clean of mineral build-up.
1. Shut off the water supply.
2. Remove front panel.
Although there is no normal access to the gear
reducer lubricant, it can be checked without removal
and complete disassembly. The auger drive motor
must be removed and the lubricant checked through
the input shaft area.
Because of a shelf under the motor hole, only about
3/16 of oil should be on the tip of the screwdriver
blade. Any more and there may be water in the gear
case, any less and it may be low. The correct oil
charge is 14 ounces.
December 2014
Page 39
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Air Cooled
Symptom Probable Cause Possible Correction
No ice No power Check that ice machine has
power. If power light is out, check
transformer.
Code 3: No water Restore water, check lters, water
level and sensor
Status light is off Push and release ON switch
Code 1: No ice sensed Check for ice ow down chute. if
very slow or no ice being made,
check for refrig. system failure
Check auger motor for power, if no
power, check controller component
indicator light. If there is power to
the motor, check motor windings
Code 2: Auger motor draws too
many amps, controller shut unit off.
Bin Eyes Blocked light is On Ice is in the chute.
Code 4: Refrigeration system over
or under pressure
Code 4: Chute thermostat opened Unit overlled chute, check photo
Everything is in operation, but no
refrigeration effect
Optional bin thermostat is open Check thermostat or jumper wire
Optional ultrasonic system senses
false bin full
Low ice making capacity Scale build up Remove scale from evaporator and
Air lter dirty Clean air lter
Condenser ns dirty Clean condenser
Restricted water to evaporator Check for air bubble in hose,
Expansion valve superheat
incorrect
Check for damage to gear reducer
or auger bearings.
Check for restriction between
reservoir and evaporator
No ice in the chute. Check position
of sensors, check sensors for scale
build up
Check for proper operation of the
fan and motor; check for proper
ow of water into evaporator;
check for proper refrigerant charge
eye system
Check compressor
Check TXV superheat
Check refrigerant charge
on blue wires to #5 & #6
Check sensor for proper
installation and operation
water system
change reservoir if found
Check superheat
December 2014
Page 40
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Water Cooled
Symptom Probable Cause Possible Correction
No ice No power If power light is out and there
is power to the unit, check
transformer.
Code 3: No water Restore water, check lters, water
level and sensor
Status light is off Push and release ON switch
Code 1: No ice sensed Check for ice ow down chute. if
very slow or no ice being made,
check for refrigeration system
failure
Check auger motor for power, if no
power, check controller component
indicator light. If there is power to
the motor, check motor windings
Code 2: Auger motor draws too
many amps, controller shut unit off.
Bin Eyes Blocked light is On Ice is in the chute.
Code 4: Refrigeration system over
or under pressure
Code 4: Chute thermostat opened Unit overlled, check photo eye
Everything is in operation, but no
refrigeration effect
Optional bin thermostat is open Check thermostat or jumper wire
Optional ultrasonic system set too
low
Optional ultrasonic system senses
false bin full
Low ice making capacity Scale build up Remove scale from evaporator and
Restricted water to evaporator Check for air bubble in hose,
High discharge pressure Check water regulating valve
Expansion valve superheat
incorrect
Check for damage to gear reducer
or auger bearings.
No ice in the chute. Check position
of sensors, check sensors for scale
build up
Check water ow to condenser;
check for proper ow of water
into evaporator; check refrigerant
charge
system
Check water regulating valve
Check TXV superheat
Check refrigerant charge
on blue wires to #5 & #6
Adjust selector switch to a higher
position
Check sensor for proper
installation and operation
water system
change reservoir if found
Check superheat
December 2014
Page 41
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Remote Air Cooled
Symptom Probable Cause Possible Correction
No ice No power If ice machine has power
and power light is out, check
transformer.
Code 3: No water Restore water, check lters, water
level and sensor
Status light is off Push and release ON switch
Code 1: No ice sensed Check for ice ow down chute. if
very slow or no ice being made,
check for refrigeration system
failure
Auger motor working, compressor
off. Check liquid line valve and
pump down switch
Check auger motor for power, if no
power, check controller component
indicator light. If there is power to
the motor, check motor windings or
start switch
Code 2: Auger motor draws too
many amps, controller shuts unit
off.
Bin Eyes Blocked light is On Ice is in the chute.
Code 4: High discharge pressure Check remote condenser fan
Code 4: Chute thermostat opened Unit overlled, check photo eyes
Everything is in operation, but no
refrigeration effect
Optional ultrasonic system set too
low
Optional bin thermostat is open Check thermostat or jumper wire
Optional ultrasonic system senses
false bin full
Check liquid line valve for leak
through, causing auger to freeze in
place
Check for damage to gear reducer
or auger bearings.
No ice in the chute. Check position
of sensors, check sensors for scale
build up
motor
Check liquid line valve
Check compressor
Check TXV superheat
Check refrigerant charge
Adjust selector switch to a higher
position
on blue wires to #5 & #6
Check sensor for proper
installation and operation
December 2014
Page 42
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Remote Air Cooled
Symptom Probable Cause Possible Correction
Low ice making capacity Scale build up Remove scale from evaporator and
water system
Restricted water to evaporator Check for air bubble in hose to
evaporator. If there is an air bubble
AND the reservoir has a water
sensor IN the bowl, replace the
reservoir.
High discharge pressure Check remote condenser
Check headmaster
Expansion valve superheat
incorrect
Compressor cycles on and off
frequently
Check superheat
Check liquid line valve for leak
through
May be normal, pump down switch
will operate compressor as pump
down switch closes and opens
December 2014
Page 43
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Refrigeration System Failure
Symptom Probable Cause Possible Correction
Compressor is not operating Contactor not pulled in Check voltage to coil of contactor,
if correct, check coil of contactor
Check if Low or High pressure cut
outs open, Code 4 in code display
Check if remote pump down switch
not closed - if open, check low side
pressure and liquid line valve
Check for control board relay not
supplying power to contactor
Compressor overheated Check for low refrigerant charge
Check for high TXV superheat
Check for high amp draw, possible
start relay keeping start winding
powered
Compressor overload open Check for overheating, or over
amp draw
Compressor will not start Check start relay and start
capacitor
Check voltage at compressor
Check voltage at contactor
Check compressor windings
Compressor on, no refrigeration Low charge Check system charge
Condenser dirty Check condenser
Remote - liquid line valve restricted Check liquid line valve
TXV not metering Check superheat
Auger not turning Check gear reducer
Remote headmaster in bypass
mode
Inefcient compressor Check compressor amp draw, if
Compressor internal relief open Check suction and discharge
Check headmaster
normal not likely inefcient
pressure. Relief valve opens at a
pressure differential between 450
and 550 and will not re-close until
differential between suction and
discharge is reduced to less than
450.
December 2014
Page 44
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Optional Ice Level Controls
Vari-Smart (KVS)
Symptom Probable Cause Possible Correction
No ice, bin full light is ON Adjustment knob set too low Rotate knob to rst position, knob's
arrow pointing to the left of the L in
Lower (on the label)
Obstruction beneath sensor Check for and clear any item that
might be below the sensor
Sensor recessed Check sensor, sensor must
be ush in its holder and not
recessed.
No ice, power light on, bin full light
is OFF
Photo-eye in chute blocked Check controller display code. If a
b, check for blockage or scale build
up on photo eyes in chute
Check for photo eye failure
Optional Smart-Board is controlling
Check Smart-Board settings.
ice level
Ice level too high Adjustment knob set to maximum
ll
Check if knob's arrow points to
label arrow.
Sensor wire disconnected Check for proper connection of
sensor wire to VS control board
Bin Thermostat
Symptom Probable Cause Possible Correction
No ice, b in code display Bin stat is open Check for ice on bin thermostat
capillary tube
Check for cold ambient in bin
Check continuity of bin thermostat
when capillary tube is warm,
replaced if does not close
Unit overlls, shuts off on photo-
eyes
Unit overlls, shuts off on photo-
eyes
Bin stat is stuck closed Check position of bin thermostat
capillary tube.
Bin stat is stuck closed Check continuity of bin thermostat
when ice is on the capillary tube,
replaced if does not open
December 2014
Page 45
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Options
Vari-Smart
Optional adjustable ice level control (KVS). When
this option is present there is an adjustment post and
an additional indicator light to the right of the four
indicator lights mentioned earlier.
The ultrasonic ice level control allows the user to
control the point that the ice machine will stop making
ice before the bin or dispenser is full.
Reasons for this include:
• Seasonal changes in ice used
Use of adjustable ice level control
There are several positions the ice level can be set to,
including Off or Max (knob and label indicators lined
up), where it lls the bin until the standard bin control
shuts the machine off. See the kit’s instructions for
complete details.
• Planning to sanitize the bin
• Faster turnover for fresher ice
• Certain dispenser applications where maximum ice
level is not desired
Rotate the adjustment post to the desired ice level.
The machine will ll up to that level and when it shuts
off the indicator light next to the adjustment post will
be On.
Note: The maximum ll position is when the arrow on
the knob points to the arrow on the label.
Dispenser applications - Nugget ice only:
Set the adjustment knob arrow to the Norm area
between the green arrows. Select either the rst or
second positions as a starting point and adjust as
needed.
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Options: Bin Thermostat
Another bin control method available on these
machines is a bin thermostat.
Type: Opens on temperature fall.
Connects: To blue wires to controller, in place of the
jumper connecting the blue wires between terminals 5
and 6.
Use: In certain ice dispenser kits or whenever a
permanently lowered ice level is desired and a KVS is
not suitable.
Mounts: To the control box support post.
Result when open: Machine shuts down, b in code
display.
Results when closed: Machine makes ice until either
the circuit opens or the photo-eyes are blocked by ice.
Circuit voltage type: Low
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Air, Water or Remote Service Manual
Repair Procedures: Bearing And Breaker
Note: Removal of the auger, water seal, evaporator
and gear reducer w/ motor must begin at the top of
the assembly.
To Remove the Breaker Bearing Assembly:
1. Remove panels and disconnect electrical power.
2. Push back bail clamp and remove ice chute cover.
3. Unscrew and remove ice sweep.
4. Lift up and remove ice chute.
5. The breaker may be removed from the auger and
evaporator without disturbing the auger.
• a. Unscrew breaker cover from breaker (left hand
threads)
• b. Unscrew auger stud from top of auger.
• c. Unscrew 4 allen head cap screws holding breaker
to evaporator.
• d. Lift up, and remove breaker/bearing assembly
from auger & evaporator.
• a. Add food grade grease such as Scotsman
part number 19-0569-01 to the seal area before
installing on the auger.
• b. Check the seal to shaft areas for cuts, or rough
spots: none are permitted.
Apply Food
Grade
Grease Here
6. Service the bearing. Check for rust, rough spots
and damage.
• a. The bearing is pressed into the breaker, to
remove the bearing and replace it an arbor press is
needed.
• b. Replace lower seals before installing new bearing
in breaker.
Note: Seals must be pressed in with a tool, they will
not install by hand. A 2" PVC coupling works well as
an insertion tool. Seals install open side up.
Lip seals must be lubricated with food grade grease
prior to assembly.
Replace parts as required. Re-grease bearing with
Scotsman part no. A36808-001 bearing grease.
Replace top seal, and check the o-rings, replace if cut
or torn.
7. Reverse to reassemble: specic tools and materials
are required to install properly.
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Repair Procedures: The Auger
Turn off the water to the machine, and unclip the
evaporator drain hose, pull it down and drain the
evaporator into the bin or a container.
1. Remove the the top panel.
2. Remove ice chute cover.
3. Unscrew ice sweep.
4. Remove ice chute body.
5. The auger and breaker/bearing may now be
removed as an assembly.
• a. Unscrew 4 allen head cap screws holding breaker
to evaporator.
• b. Lift up on breaker and remove auger from
evaporator.
Note: If the auger is stuck, the breaker must be
removed from the auger.
The breaker may be removed from the auger and
evaporator without disturbing the auger.
• a. Unscrew breaker cover from breaker (left hand
threads)
• b. Unscrew auger stud from top of auger.
• c. Unscrew 4 allen head cap screws holding breaker
to evaporator.
• d. Lift up & remove breaker from evaporator.
• e. If the auger will not lift up use a slide hammer
type puller to pull on the auger at the threaded hole.
The size of that hole is 5/8"-18.
Inspect the auger, see the next page.
Ice Sweep Removed
Remove allen head cap screws
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Auger and Evaporator Inspection
The auger must be carefully inspected for wear and
scale. The wear areas are the top bearing surface,
drive junction and the edges of the ights. The edges
of the auger have horizontal serrations and there are
highly machined areas in between. If the auger has
contacted the evaporator wall, it will have very rough
ight edges and should be replaced.
Scale forms on the auger during normal ice making.
If scale is still on the auger after cleaning in the
ice machine, the scale can be removed using ice
machine cleaner and a nylon scrub pad.
Inspect the auger, the critical areas of the auger are:
1. The auger body. It should be clean and shining.
Sometimes an auger will appear clean when wet, but
after it is dry it will be seen to be stained. Scrub the
auger with ice machine cleaner and hot water.
Caution: Ice machine cleaner is an acid. Handle it with
extreme care, keep out of the reach of children.
2. The water seal area. Because the auger has been
removed, the water seal will have to be replaced.
Remove the water seal top half from the auger, and
remove any sealant or debris from the shoulder of the
auger where the water seal was.
Inspect the evaporator's interior. The interior is
stainless steel that should be bright and shiny
when dry. If it isn't the scale on the surface must be
removed. To remove scale:
1. Remove the water seal; it will have to be replaced.
2. Use a brass wire brush and scrub the interior of the
evaporator vertically to remove any scale.
3. Clean up any debris from the top of the gear
reducer.
Example of a clean auger
Example of Scale Build UP on Evaporator Wall
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Repair Procedures: The Water Seal
(Assuming all steps to remove the auger have been
performed.)
1. The gear reducer/evaporator assembly will have to
be exposed.
2. Remove the 4 hex head cap screws holding the
evaporator to the gear reducer assembly. Lift the
evaporator up and off of the gear reducer.
To Replace the Water Seal:
1. Lubricate the water seal with a thin coating of food
grade grease or oil, and push the water seal into the
bottom of the evaporator slightly past the groove for
the snap ring.
2. Replace the snap ring and pull the water seal down
against it.
3. The part of the water seal that rotates with the
auger must also be replaced. Remove the old part
from the auger and clean the mounting area.
4. Place a small bead of food grade silastic sealant
Sealant
3. Remove the snap ring or wire retainer from the
groove under the water seal.
Snap Ring
Bottom of
Stationary
Water Seal
4. Pull or drive out the lower half of the water seal.
Tip: Push one side of seal in so the seal is turned 90
degrees to the evaporator and pull it out.
(such as 732 RTV or Scotsman part number 19-0529-
01) on the area of the auger where the water seal is
to be mounted.
5. Carefully push the water seal (rubber side against
the auger shoulder and the silastic sealant).
Do not get any sealant onto the face of the seal.
6. Allow the auger and seal to air dry until the sealant
is dry on the surface.
7. If the original water seal was leaking, it would be a
good idea to inspect the interior of the gear reducer.
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Repair Procedures: The gear reducer
(Assuming that the procedures through removal of the
water seal have been performed.)
Electrical Shock Hazard
Disconnect electrical
power before beginning
1. Remove the electrical wires from the gear drive
motor.
2. Unscrew the 4 cap screws holding the gear reducer
to the ice machine.
3. Remove the gear reducer from the icemaker.
To Inspect the gear reducer.
1. Remove the cap screws holding the gear reducer
case halves together and pry the two cases apart.
the cover onto the lower case, cover will have to be
moved closer to the second gear after the output gear
has cleared the second gear top bearing.
5. After the case is together, and the locating pins are
secure in both ends, replace all cap screws.
6. Bench test the gear reducer, check for oil leaks,
noise, and amp draw.
Replacement Drive Motor
2, To lift off the cover, lift up until you can feel internal
contact, then pull the cover towards the output gear
end, and then lift the cover (with drive motor attached)
up and away from the gear reducer case.
Note: The case cover output gear, bearings, and shaft
are one pressed together assembly. Replace as a
unit.
3. Inspect the oil, gears, and bearings. If the oil level
and condition is acceptable, quickly check the gears
and bearings. They are likely to be ne if the oil is.
If there is evidence of water in the oil (rusty bearings
and gears; the oil having a creamy white appearance;
oil level too high) carefully inspect the bearings
and gears. If in doubt about the condition of a part,
replace it. The oil quantity is 14 uid ounces, do not
overll.
Note: The gears and bearings are available only as
pressed together sets.
4. After replacing parts as required, (if any)
reassemble the gear case and cover. The two smaller
gears and the oil should be in the lower case, the
output gear will be with the cover. As you lower
Gear case cover assembly
Gear case with First and Second Gears
December 2014
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Repair Procedures: Replace the Evaporator:
(Assuming all the steps for removal of the thrust
bearing, breaker, auger, and water seal have been
performed.)
1. Recover the refrigerant from the ice maker.
2. Unsweat the refrigerant connections:
a) At the thermostatic expansion valve outlet.
Heat sink the TXV body when unsweating or
resweating the adjacent tubing.
b) At the suction line at the joint about 3" from the
evaporator.
3. Remove the evaporator.
4. Unsweat the drier from the liquid line.
5. After installing a new water seal in the new
evaporator (see “To Replace the Water Seal”) sweat
in the new evaporator at the old tubing connections.
6. Install an new drier in the liquid line.
7. Evacuate the system until dehydrated, then weigh
in the nameplate charge. Check for leaks.
Repair Procedures: Thermostatic Expansion Valve
1. Remove front panel.
2. If the machine was in operation, push and release
the off button to shut it down.
3. Disconnect electrical power.
4. Recover refrigerant.
5. Remove insulation covering expansion valve and
bulb.
6. Remove strap securing bulb to suction line.
7. Unsweat the expansion valve from the liquid line.
Remove it.
8. Unsweat the drier from the liquid line. Remove it.
9. Connect nitrogen to discharge access valve.
10. Immediately place new valve in ice machine.
11. Open nitrogen bottle and braze expansion valve
inlet and outlet joints together. Braze new drier
into system.
8. Install auger, breaker, breaker bearing assembly,
and ice discharge chute in reverse order of
disassembly.
To Reassemble the Evaporator and Auger
1. After the gear reducer has been inspected, fasten
the evaporator to the gear reducer. Torque the bolts to
110 inch pounds.
2. Lower the auger into the evaporator barrel, slightly
turning it to match up with the drive end. Do Not Drop
Into the Evaporator.
3. Complete the reassembly by reversing the
disassembly for the breaker & thrust bearing
assembly.
12. Shut off nitrogen, shut access valves.
13. Evacuate to at least 300 microns.
14. Weigh in the nameplate charge. Check for leaks.
15. Attach bulb to suction line. Position at 4 or 8
o'clock on the tube. Secure tightly but do not crush
the bulb with the strap.
16. Attach valve and bulb insulation.
17. Reconnect electrical power.
18. Return all panels to their original positions.
December 2014
Page 53
SCOTSMAN ICE SYSTEMS
775 Corporate Woods Parkway
Vernon Hills, IL 60061
800-726-8762
www.scotsman-ice.com
291-855
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