Page 1
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 flaked and nugget ice machines.
The latest in electronics has been coupled with the
time tested Scotsman flaked ice system to provide
reliable ice making and the features needed by
customers.
Table of Contents
Installation: .......................Page 2
Location: ........................Page 3
F0522, F0822, N0522, or N0822 Cabinet Layout . . . Page 4
F1222, F1522, N1222 or N1522 Cabinet Layout . . . Page 5
Unpacking & Install Prep ................Page 6
Water ..........................Page 7
Electrical ........................Page 8
Refrigeration - Remote Condenser Models ...... Page 9
Remote Condenser Location - Limits ......... Page 10
For The Installer: Remote Condenser ......... Page 11
The features include easily accessible air filters,
simple conductivity water level sensing, evaporator
clearing at shut down, photo-eye sensing bin
control and the ability to add options.
Maintenance: Scale Removal ............. Page 32
Maintenance: Check Top Bearing ........... Page 33
Service Top Bearing .................. Page 34
Check Gear Reducer Lubricant ............ Page 35
Maintenance: Sensors ................. Page 36
Service Diagnosis - Air Cooled ............. Page 37
Service Diagnosis - Water Cooled ...........
Service Diagnosis - Remote .............. Page 39
Service Diagnosis - Remote .............. Page 40
Service Diagnosis - Refrigeration System Failure . . . Page 41
Page 38
Precharged Line Routing ................ Page 12
Coupling Instructions ..................Page 13
Final Check List ....................Page 14
Controller ........................Page 15
AutoAlert and Display Code .............. Page 16
Component Indicator Lights .............. Page 17
Electrical Component Details ............. Page 18
Refrigeration ...................... Page 19
Initial Start Up .....................Page 20
Sequence of Operation .................Page 21
Water System .....................Page 23
Air Cooled Refrigeration ................ Page 24
Water Cooled Refrigeration .............. Page 25
Remote Air Cooled Refrigeration ........... Page 26
How Ice Is Made ....................Page 27
Technical Information ................. Page 28
Heat Load, Charge and Condenser GPM ....... Page 29
Service Diagnosis - Optional Ice Level Controls .... Page 42
Options .........................Page 43
Options: Bin Thermostat ................ Page 44
Repair Procedures: Bearing And Breaker ....... Page 45
Repair Procedures: The Auger ............. Page 46
Auger and Evaporator Inspection ........... Page 47
Repair Procedures: The Water Seal .......... Page 48
Repair Procedures: Replace the Evaporator: ..... Page 49
Repair Procedures: The gear reducer ......... Page 50
Repair Procedures: Thermostatic Expansion Valve . . Page 51
Refrigeration System Pressures ............ Page 30
Maintenance ...................... Page 31
September 2009
Page 1
Page 2
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
o
Ice maker 50
Remote
condenser
F. 100oF.
o
-20
F. 120oF.
Water temperature limits
Minimum Maximum
o
All models 40
F. 100oF.
Water pressure limits (potable)
Minimum Maximum
All models 20 psi 80 psi
The quality of the water supplied to the ice machine
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 filtered out. In
solution or dissolved solids cannot be filtered, they
must be diluted or treated. Water filters are
recommended to remove suspended solids. Some
filters have treatment in them for suspended 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.
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
Most water filters remove chlorine from the water
supply to the machine which contributes to this
situation. Testing has shown that using a filter 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.
November 2009
Page 2
Page 3
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Location:
While the machine will operate satisfactorily within
the 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 confined. Air cooled models need plenty
of room air to breathe. Air cooled models must
have at least six inches of space on the left side for
air intake; however, more space will allow better
performance.
Airflow
Air flows into the front of the cabinet and out the
back. The air filters are on the outside of the front
panel and are easily removed for cleaning.
All models are the same width: 22 inches. All
models are the same depth: 24 inches.
Bin & adapter list:
B222S – no adapter needed
•
B322S – no adapter needed
•
B330P – Use KBT27
•
B530P – Use KBT27
•
B842S – Use KBT39
•
B948S - Use KBT38 for a single unit
•
B948S – Use KBT38-2X for two units side by
•
side
BH1100, BH1300 and BH1600 upright bins
•
include filler panels to accommodate a 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 intake kits KPFSA223 or KPFSA227 for air
cooled models.
The standard machine will make ice until ice fills
the bin and blocks an infrared light beam inside the
bottom of the machine. A field installed kit is
available to adjust the ice level lower. That 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. There is a field installed kit that can log data
and provide additional information when the front
panel is removed. That kit number is KSBU. A
similar kit adds network connectivity, and its
number is KSBU-N.
Bin compatibility
• ID150 – use KBT42, 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
specifically approved by Scotsman.
Scotsman reserves the right to make design
changes and/or improvements at any time.
Specifications and design are subject to change
without notice.
September 2009
Page 3
Page 4
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
24.00
REF.
61
22.00 REF.
55.9
2.92
7.4
6.48
16.5
2.81
7.1
4.30
10.9
16.50
41.9
12.50
31.8
ICE DROP
OPENING
PLAN VIEW
ULTRA SONIC
BIN LEVEL
SENSOR
OPTIONAL
12.40
31.5
2.68
6.8
1.59
4
14.65
37.2
2.17
5.5
AIR COOLED
BACK VIEW
3/4" FPT
DRAIN
.88 DIA.
ELECTRICAL
ACCESS
3/8" FLARE
MACHINE
WATER
INLET
12.35
31.4
2.17
5.5
1.59
4
2.63
6.7
14.55
37
19.31
49
17.55
44.6
3.33
8.5
15.40
39.1
WATER COOLED
BACK VIEW
3/8" FLARE
MACHINE
WATER
INLET
3/4" FPT
DRAIN
.88 DIA.
ELECTRICAL
CONNECTION
3/8" FPT
CONDENSER
WATER
INLET
1/2" FPT
CONDENSER
DRAIN
18.88
48
2.68
6.8
14.60
37.1
12.40
31.5
7.40
18.8
10.94
27.8
1.59
4
2.17
5.5
REMOTE COOLED
BACK VIEW
REMOTE COND.
LIQUID LINE
3/8" MALE CPLG.
REMOTE COND.
DISCHARGE LINE
1/2" MALE CPLG.
.88 DIA.
ELECTRICAL
CONNECTION
3/4" FPT
DRAIN
22.00
55.9
23.00
[58.5]
22.89
58.1
FRONT VIEW
LOUVER AND
REMOVABLE FILTER
A/C UNITS ONLY
24.00
61
.92
[2.4]
LEFT SIDE VIEW
Air, Water or Remote Service Manual
F0522, F0822, N0522, or N0822 Cabinet Layout
Note: Bin Top Cut-outs for
drop zone should include
ultrasonic sensor location
December 2009
Page 4
Page 5
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
24.00
REF.
61
22.00 REF.
55.9
2.92
7.4
6.48
16.5
2.81
7.1
4.30
10.9
16.50
41.9
12.50
31.8
ULTRA SONIC
BIN LEVEL
SENSOR
OPTIONAL
PLAN VIEW
ICE DROP
OPENING
13.39
34
2.67
6.8
18.64
47.3
1.59
4
AIR COOLED
BACK VIEW
3/8" FLARE
MACHINE
WATER
INLET
.88 DIA.
ELECTRICAL
ACCESS
3/4" FPT
DRAIN
13.39
34
2.17
5.5
2.67
6.8
18.59
47.2
1.59
4
19.80
50.3
18.05
45.8
3.37
8.6
15.44
39.2
WATER COOLED
BACK VIEW
.88 DIA.
ELECTRICAL
ACCESS
3/8" FLARE
MACHINE
WATER
INLET
3/4" FPT
DRAIN
1/2" FPT
CONDENSER
DRAIN
13.39
34
2.67
6.8
18.59
47.2
1.59
4
2.17
5.5
7.39
18.8
10.93
27.8
21.84
55.5
REMOTE COOLED
BACK VIEW
.88 DIA.
ELECTRICAL
ACCESS
3/8" FLARE
MACHINE
WATER
INLET
3/4" FPT
DRAIN
3/8" FPT
CONDENSER
WATER INLET
REMOTE COND.
LIQUID LINE
3/8" CPLG
REMOTE COND.
DISCHARGE LINE
1/2" CPLG
27.00
[68.6]
22.00
55.9
22.89
58.1
FRONT VIEW
LOUVER AND
REMOVABLE FILTER
A/C UNITS ONLY
24.00
61
.92
2.3
LEFT SIDE VIEW
Air, Water or Remote Service Manual
F1222, F1522, N1222 or N1522 Cabinet Layout
Note: Bin Top Cut-outs for
drop zone should include
ultrasonic sensor location
December 2009
Page 5
Page 6
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Unpacking & Install Prep
Remove the carton from the skid. Check for hidden
freight damage, notify the carrier immediately if any
is found. Retain the carton for the carrier’s
inspection.
The machine is not bolted to the skid. If strapped
remove the strap.
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.
Panel Removal
1
2
1. Locate and loosen the two screws at the front
edge of the top panel.
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.
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
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
September 2009
Page 6
Page 7
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 flare
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
There is one ¾” FPT condensate drain fitting 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 fitting, 3/8” OD copper tubing or the
equivalent is recommended.
Water filtration is recommended. If there is an
existing filter, change the cartridge.
Connect the water cooled water supply to the
condenser inlet.
Note: Do NOT filter water to the water cooled
condenser circuit.
Connect the drain tube to the condensate drain
fitting.
Potable
Water
Condensate
Drain
Air Cooled Plumbing
Condenser
Water
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.
September 2009
Page 7
Potable
Water
Condenser
Drain
Condensate
Drain
Water Cooled Plumbing
Page 8
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 field supplied or the machine hard wired to
the electrical power supply. The junction box for the
electrical connection is on the back panel.
Refer to the dataplate on the machine for minimum
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.
Do not use an extension cord.
circuit ampacity and determine the proper wire size
for the application. The dataplate (on the back of
Follow all local and national codes.
the cabinet) also includes the maximum fuse size.
Model
N0422A-1 22 x 24 x 23 115/60/1 Air
N0422W-1 same 111/60/1 Water
F0522A-1 same 115/60/1 Air
F0522W-1 same 115/60/1 Water
N0622A-1 same 115/60/1 Air
N0622W-1 same 115/60/1 Water
N0622R-1 same 115/60/1 Remote
N0622A-32 same 208-230/60/1 Air
N0622W-32 same 208-230/60/1 Water
F0822A-1 same 115/60/1 Air
F0822W-1 same 115/60/1 Water
F0822R-1 same 115/60/1 Remote
F0822A-32 same 208-230/60/1 Air
F0822W-32 same 208-230/60/1 Water
N0922A-32 22 x 24 x 27 208-230/60/1 Air
N0922W-32 same 208-230/60/1 Water
N0922R-32 same 208-230/60/1 Remote
N0922A-3 same 208-230/60/3 Air
N0922R-3 same 208-230/60/3 Remote
F1222A-32 same 208-230/60/1 Air
F1222W-32 same 208-230/60/1 Water
F1222R-32 same 208-230/60/1 Remote
F1222A-3 same 208-230/60/3 Air
F1222W-3 same 208-230/60/3 Water
F1222R-3 same 208-230/60/3 Remote
N1322A-32 same 208-230/60/1 Air
N1322W-32 same 208-230/60/1 Water
N1322R-32 same 208-230/60/1 Remote
F1522A-32 same 208-230/60/1 Air
F1522W-32 same 208-230/60/1 Water
F1522R-32 same 208-230/60-1 Remote
Dimensions
w"xd"xh"
Voltage
Volts/Hz/Phase
Condenser
Type
Min Circ
Ampacity
15.2 20
14.4 20
15.2 20
14.4 20
18.3 25
16.7 25
19.4 25
18.3 25
16.7 25
19.4 25
12.5 15
11.3 15
12.3 15
13.0 15
12.8 15
12.5 15
11.3 15
12.3 15
13.0 15
11.8 15
12.8 15
19.1 30
17.9 30
18.9 30
19.1 30
17.9 30
18.9 30
Max Fuse Size or HACR
Type Circuit Breaker
9.8 15
8.9 15
9.8 15
8.9 15
November 2009
Page 8
Page 9
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.
Note: A headmaster is required for all remote
condenser systems. Prior condensers did not have
a headmaster. New head / old condenser retrofits
can use headmaster kit KPFHM. See chart below
for applications.
Prior Head Prior Condenser New Head
NME654R ERC101 N0622R
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.
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
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.
September 2009
Page 9
Page 10
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
22.87"
17.15"
40.35"
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
•
Run = dd+rd+hd = Calculated Line Length
•
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.
Configurations that do NOT meet these
requirements must receive prior written
authorization from Scotsman to maintain warranty.
Remote Condenser
located above ice
machine.
rd
Max 35'
Max 15'
dd
Remote condenser
located below ice
machine.
Operating a machine with an unacceptable
configuration is misuse and will void the warranty.
hd
Condenser Distance &
Location Schematic
September 2009
Page 10
Page 11
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
To Remote Condenser
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.
Keep condenser at least 2 feet from a wall or other
rooftop equipment.
Note: The location of the condenser is relative to
the ice machine is LIMITED by the specification on
the prior page.
Roof penetration. In many cases a roofing
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 roofing contractor secure
the condenser to the roof.
Potable
Water
Condensate
Drain
September 2009
Page 11
Page 12
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
To Remote
Condenser
Fan Motor
Air, Water or Remote Service Manual
Precharged Line Routing
Do not connect the precharged tubing until all
routing and forming of the tubing is complete. See
the Coupling Instructions for final 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, the end without access valves
goes to the ice maker.
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 roofing 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.
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 roofing contractor seal the holes in the
roof per local codes
Minimize
Outside
Tubing
September 2009
Page 12
Page 13
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Coupling Instructions
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
Certified 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 fittings on the correct connections
on the condenser and ice machine.
1/2" discharge
•
3/8" liquid line
•
Final Connections:
4a. Begin by tightening the couplings together by
hand until it is certain that the threads are properly
engaged.
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.
4c. Continue tightening the swivel nut until it
bottoms out or a very definite increase in
resistance is felt (no threads should be showing).
Critical Step!
5. Use a marker or pen to 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.
4b. Then using two wrenches tighten the coupling
until it bottoms out or a definite 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
September 2009
Page 13
6. After all connections have been made, and after
the receiver outlet valve has been opened (do not
open yet), check the couplings for leaks.
Page 14
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
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. 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?
Control Operation
Use and 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.
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.
Power
Status
No
Water
Time to
Clean
On
Off
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 correct bezel installed in the trim strip?
10. Is the water pressure adequate?
11. Have the drain connections been checked for
leaks?
12. Has the bin interior been wiped clean or
sanitized?
13. Have any water filter cartridges been replaced?
14. Have all required kits and adapters been
properly installed?
There are four indicator lights at the front of the
machine that provide information on the condition
of the machine.
Indicator Lights:
•
Power
•
Status
•
Water
•
De-scale & Sanitize
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.
September 2009
Page 14
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Clean
Code
Display
Component Operation Indicator Lights
Code Description
.... ....FreezeMode
flashes . . Freeze Mode is Pending
.... ....BinisFull
.... ....Clean Cycle
.... ....BoardLocked
.... ....TestMode
.... ....Off
.... ....SelfTestFailed
flashes. . No ice sensed - Retrying
..... ....Noicesensed-ShutDown
flashes . Auger motor high load - Retrying
.... ....Auger motor high load - Shut Down
.... ....Nowaterinreservoir
.... ....Refrigeration pressure too high / low
- Unit Remotely
Locked Out - Contact Leasing Company
F
F
b
C
L
d
O
E
1
1
2
2
3
4
All 4 Upper Lights Flashing
Control Operation - See Manual
Water Light On
De-Scale Light On
Test Mode
Recall Diagnostic Codes
Clear Diagnostic Codes
Reset from Code 1, 2, 3 or 4
- Restore water supply to
machine.
- Clean and sanitize
machine.
- Depress Off for 3 seconds,
then depress Clean for 3 seconds.
- Depress Off
for 3 seconds. Press Clean repeatedly to
go from most recent to oldest of 10.
- Switch unit off,
depress and hold Clean and Off for 3
seconds.
- Depress
Off then Depress On.
Technician Section
02-4407-01
On Off
Power
Status
De-scaleWater
Sanitize
Air, Water or Remote Service Manual
Controller
Location of
Optional
Vari-Smart
Location of
Optional
Smart-Board
September 2009
Page 15
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Code Description
.... ....FreezeMode
flashes . . Freeze Mode is Pending
.... ....BinisFull
.... ....Clean Cycle
.... ....BoardLocked
.... ....TestMode
.... ....Off
.... ....SelfTestFailed
flashes. . No ice sensed - Retrying
..... ....Noicesensed-ShutDown
flashes . Auger motor high load - Retrying
.... ....Auger motor high load - Shut Down
.... ....Nowaterinreservoir
.... ....Refrigeration pressure too high / low
- Unit Remotely
Locked Out - Contact Leasing Company
F
F
b
C
L
d
O
E
1
1
2
2
3
4
All 4 Upper Lights Flashing
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.
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 first
part of the cleaning mode.
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
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.
•
Auger
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.
•
• This light is ON when the auger motor is
operating.
Ice Dispense
•
Not used this model.
Lock / Unlock control:
•
Hold On button in for 3 seconds, keep
holding then press and release Off twice.
September 2009
Page 17
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
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
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.
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.
•
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.
September 2009
Page 18
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Refrigeration
Refrigerant: R-404A
Compressors: Copeland or Tecumseh hermetic
by model
Expansion valve: Non adjustable, internally
equalized.
Condensers: Air is forced draft type, water cooled
is counterflow type.
Air filters: 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 filters (not
filter 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-flight auger inside.
September 2009
Page 19
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Initial Start Up
1. Turn the water supply on.
Change De-Scale Notification Interval
2. Switch the electrical power on. Confirm voltage
is correct for the model.
3. Push and release the On button. The machine
will start in about two minutes.
This feature is accessible only from standby
(Status Light Off).
1. Press and hold Clean button for 3 seconds.
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
file it on line or mail it.
7. Notify the user of the maintenance
requirements and whom to call for service.
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 confirm the selection.
September 2009
Page 20
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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 float 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
float reservoir. A tube from the float 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 filled
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 confirm ice making. As the machine
makes ice, the falling ice causes breaks in the
infrared beam. In operation, the first 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 flashing 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 flashing 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 flashing in the code
display. The controller will attempt a restart of the
auger motor in 4 minutes. If during the first 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
flashing to continuous.
Water System
The water level in the evaporator is maintained by
a float valve in a separate reservoir. As ice is
made, and water is used, the water level in the
reservoir drops, opening the float valve. The open
valve adds water to the reservoir to resupply it.
September 2009
Page 21
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
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
controller.
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 flashing F will show in the code display
while the auger drive motor starts up. When it has
started, the compressor will start and the flashing 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
Steady Green Normal Normal - -
Switching on or off.
Blinking Green
Blinking Red - Diagnostic shut down Lack of water -
Yellow - - -
Light Actions
Blinking Yellow - - -
Light Off No power Switched to Off Normal Normal
All Blinking Unit is remotely locked out - check with leasing company
Self Test
Failure
When Smart-Board used,
machine attention
recommended.
--
September 2009
Page 22
De-Scale &
Sanitize
Time to descale
and sanitize
In Cleaning
Mode
Page 23
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Water System
Water enters the machine through the 3/8" male
flare at the rear of the cabinet, goes to the water
reservoir which it enters through the float valve.
The float valve maintains a constant level of water
in the reservoir and evaporator, as water flows out
the bottom of the reservoir tank to fill the
evaporator.
Reservoir overflow or evaporator condensation is
routed to the drain. Water cooled models have a
separate water circuit for the cooling water: it
enters the fitting at the rear, goes to the water
Correct Water
Level
regulating valve, then to the water cooled
condenser and down the drain.
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 float
arm up or down to adjust the water level.
Float Valve
Float Valve
Water Inlet
Orifice
and Reservoir
Condensate
Pan
Water Sensor
Evaporator
Water Inlet
Condensate Drain
Water System Schematic
September 2009
Page 23
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
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 flows through a
serpentine tube that is connected to fins. Room air
is forced by a fan motor through the fins. As the
relatively cooler air comes in contact with the fins
and tubing, heat flows from the hot refrigerant gas
into the fins 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 flows 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 flows 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 flows in.
From the evaporator, the refrigerant, carrying the
heat from ice making, flows back to the compressor
through the suction line, and the cycle continues.
Air Cooled
Condenser
Thermostatic
Expansion
Valve
Discharge
Line
Suction Line
Evaporator
Compressor
Liquid Line
Refrigeration Schematic
September 2009
Page 24
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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 flow
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 flows out of the
condenser warmed up to about 110oF. Water flow
is controlled by a water regulating valve on the inlet
of the condenser's water circuit.
From the condenser the high pressure liquid
refrigerant flows 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 flows 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 flows in.
From the evaporator, the refrigerant, carrying the
heat from ice making, flows back to the compressor
through the suction line, and the cycle continues.
Water Cooled
Condenser
Discharge
Line
Thermostatic
Expansion
Valve
Suction Line
Evaporator
Compressor
Liquid Line
Refrigeration Schematic
September 2009
Page 25
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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
flash gas out of the liquid line.
From the condenser, refrigerant flows to the
receiver. It can be either liquid or gas, depending
upon the modulation of the head master.
From the receiver, liquid refrigerant flows 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, flows 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
Thermostatic
Expansion
Valve
Headmaster
Discharge Line
Suction Line
Liquid Line
Evaporator
Compressor
Refrigeration Schematic
September 2009
Page 26
Liquid Line
Solenoid Valve
Page 27
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 fills 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 flowing 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 flows 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 flaked
ice.
Cutaway View
of Bearing
Nugget or
Flaked Ice
Refrigerated
Tubing
Foam
Insulation
September 2009
Page 27
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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 Voltage Brand Amps
N0422, F0522 115 Tecumseh 5.9-6.1
N0622, F0822 115 Tecumseh 5.9-6.1
N0622, F0822 230 Tecumseh
N0922, F1222 230 single phase Tecumseh 4.7-5.1
N0922, F1222 230 three phase Copeland 3.9-4.1
N1322, F1522 230 single phase Copeland 6.9-7.2
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 phase 1.1 - 2 3
N0922 or F1222 230 three phase 1.1 - 2 3
N1322 or F1522 230 single phase 1.1 - 2 3
N1322 or F1522 230 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.
September 2009
Page 28
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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, F0522W .14 @ 50
N0622, F0822W .21 @ 50
N0922, F1222W .68 @ 50
N01322, F1522W .32 @ 50
o
F water .23 @ 70
o
F water .40 @ 70
o
F water .76 @ 70
o
F water .59 @ 70
o
F water
o
F water
o
F water
o
F water
Refrigerant Charge
Model R-404A (oz)
N0422A, F0522A 14
N0422W, F0522W 11
N0622A, F0822A 14
N0622W, F0822W 11
N0622R, F0822R 192
N0922A, F1222A 18
N0922W, F1222W 20
N0922R, F1222R 192
N1322A, F1522A 34
N1322W, F1522W 18
N1322R, F1522R 192
December 2009
Page 29
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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 flow 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
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
Suction (PSIG) Discharge (PSIG) Suction (PSIG) Discharge (PSIG)
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 25-28 240-250
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Maintenance
This ice machine needs five types of maintenance:
Air cooled and remote models need their air
•
filters 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 filters
greasy air, monthly.
Scale removal
conditions it might be every 3 months.
Sanitizing
often as needed to maintain a sanitary unit.
Sensor Cleaning
Top bearing check
time the scale is removed.
: At least twice a year, but in dusty or
. At least twice a year, in some water
: Every time the scale is removed or as
: Every time the scale is removed.
: At least twice a year or every
Maintenance:
The condenser fins will occasionally need to be
cleaned of leaves, grease or other dirt. Check the
coil every time the ice machine is cleaned.
Maintenance:
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:
If the machine has been connected to water filters,
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.
Remote air cooled condenser
Exterior Panels
Water filters
Maintenance:
1. Pull air filter(s) from panel.
2. Wash the dust and grease off the filter(s).
3. Return it(them) to their original position(s).
Do not operate the machine without the filter in
place except during cleaning.
Maintenance:
If the machine has been operated without a filter
the air cooled condenser fins 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.
Air filters
Air cooled condenser
September 2009
Page 31
Page 32
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.
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.
Ice machine scale remover
contains acids. Acids can
cause burns.
If concentrated cleaner
comes in contact with skin,
flush 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.
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.
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.
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.
11. Turn the water supply to the ice machine OFF
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Bail Clamp
Air, Water or Remote Service Manual
Maintenance: Check Top Bearing
This task should only be done by a qualified
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
3. Removing the water shed & unscrewing the
breaker cover (left hand threads).
2. Unscrewing the ice sweep
Inspect the top of the bearing. When new the
grease is white, over time a small amount 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.
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Top Bearing
If the grease is uniformly white, and the bearing
has no play, no further action is needed. If very
gray, rusty, wet or has any embedded metal, have
the bearing replaced.
If the bearing only needs grease, or to confirm 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.
Grease
Needle, pn
02-3559-01
September 2009
Page 34
Page 35
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Check Gear Reducer Lubricant
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.
Normal Oil Level
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.
September 2009
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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
photo-electric 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
photo-eye portion.
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
in the water reservoir. At least twice a year, the
probe should be removed from the reservoir, and
wiped clean of mineral build-up.
1. Shut off the water supply.
2. Remove front panel.
3. Remove the hose from the water sensor, use a
hose clamp pliers for this.
4. Loosen mounting screw and release the water
sensor from the frame of the unit.
5. Wipe probes clean,
September 2009
Page 36
Page 37
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Air Cooled
Symptom Probable Cause Possible Correction
Check that ice machine has power.
No power
If power light is out, check
transformer.
No ice
Code 3: No water
Status light is off Push and release ON switch
Code 1: No ice sensed
Code 2: Auger motor draws too
many amps, controller shut unit off.
Bin Eyes Blocked light is On
Code 4: Refrigeration system over
or under pressure
Restore water, check filters, water
level and sensor
Check for ice flow 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
Check for damage to gear reducer
or auger bearings.
Check for restriction between
reservoir and evaporator
Ice is in the chute.
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 flow
of water into evaporator; check for
proper refrigerant charge
Low ice making capacity
Code 4: Chute thermostat opened
Everything is in operation, but no
refrigeration effect
Optional bin thermostat is open
Optional ultrasonic system senses
false bin full
Scale build up
Air filter dirty Clean air filter
Condenser fins dirty Clean condenser
Expansion valve superheat incorrect Check superheat
Unit overfilled chute, check photo
eye system
Check compressor
Check TXV superheat
Check refrigerant charge
Check thermostat or jumper wire on
blue wires to #5 & #6
Check sensor for proper installation
and operation
Remove scale from evaporator and
water system
September 2009
Page 37
Page 38
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
Code 3: No water
Status light is off Push and release ON switch
Code 1: No ice sensed
Code 2: Auger motor draws too
many amps, controller shut unit off.
Bin Eyes Blocked light is On
Code 4: Refrigeration system over
or under pressure
If power light is out and there is
power to the unit, check transformer.
Restore water, check filters, water
level and sensor
Check for ice flow 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
Check for damage to gear reducer
or auger bearings.
Ice is in the chute.
No ice in the chute. Check position
of sensors, check sensors for scale
build up
Check water flow to condenser;
check for proper flow of water into
evaporator; check refrigerant charge
Low ice making capacity
Code 4: Chute thermostat opened
Everything is in operation, but no
refrigeration effect
Optional bin thermostat is open
Optional ultrasonic system set too
low
Optional ultrasonic system senses
false bin full
Scale build up
High discharge pressure Check water regulating valve
Expansion valve superheat incorrect Check superheat
Unit overfilled, check photo eye
system
Check water regulating valve
Check TXV superheat
Check refrigerant charge
Check thermostat or jumper wire on
blue wires to #5 & #6
Adjust selector switch to a higher
position
Check sensor for proper installation
and operation
Remove scale from evaporator and
water system
September 2009
Page 38
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Remote
Symptom Probable Cause Possible Correction
No ice
No power
Code 3: No water
Status light is off Push and release ON switch
Code 1: No ice sensed
Code 2: Auger motor draws too
many amps, controller shuts unit off.
If ice machine has power and power
light is out, check transformer.
Restore water, check filters, water
level and sensor
Check for ice flow 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
Check liquid line valve for leak
through, causing auger to freeze in
place
Check for damage to gear reducer
or auger bearings.
Ice is in the chute.
Bin Eyes Blocked light is On
Code 4: High discharge pressure Check remote condenser fan motor
Code 4: Chute thermostat opened Unit overfilled, check photo eyes
Everything is in operation, but no
refrigeration effect
Optional ultrasonic system set too
low
Optional bin thermostat is open
Optional ultrasonic system senses
false bin full
No ice in the chute. Check position
of sensors, check sensors for scale
build up
Check liquid line valve
Check compressor
Check TXV superheat
Check refrigerant charge
Adjust selector switch to a higher
position
Check thermostat or jumper wire on
blue wires to #5 & #6
Check sensor for proper installation
and operation
September 2009
Page 39
Page 40
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Remote
Symptom Probable Cause Possible Correction
Low ice making capacity
Scale build up
High discharge pressure
Expansion valve superheat incorrect Check superheat
Compressor cycles on and off
frequently
Remove scale from evaporator and
water system
Check remote condenser
Check headmaster
Check liquid line valve for leak
through
May be normal, pump down switch
will operate compressor as pump
down switch closes and opens
September 2009
Page 40
Page 41
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Service Diagnosis - Refrigeration System Failure
Symptom Probable Cause Possible Correction
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
Contactor not pulled in
Compressor is not operating
Compressor overheated
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
Check for low refrigerant charge
Check for high TXV superheat
Check for high amp draw, possible
start relay keeping start winding
powered
Compressor on, no refrigeration
Compressor overload open
Compressor will not start
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
Inefficient compressor
Compressor internal relief open
Check for overheating, or over amp
draw
Check start relay and start capacitor
Check voltage at compressor
Check voltage at contactor
Check compressor windings
Check headmaster
Check compressor amp draw, if
normal not likely inefficient
Check suction and discharge
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.
September 2009
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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
Rotate knob to first position, knob's
Adjustment knob set too low
arrow pointing to the left of the L in
Lower (on the label)
No ice, bin full light is ON
No ice, power light on, bin full light is
OFF
Ice level too high
Obstruction beneath sensor
Sensor recessed
Photo-eye in chute blocked
Optional Smart-Board is controlling
ice level
Adjustment knob set to maximum fill
Sensor wire disconnected
Check for and clear any item that
might be below the sensor
Check sensor, sensor must be flush
in its holder and not recessed.
Check controller display code. If a b,
check for blockage or scale build up
on photo eyes in chute
Check for photo eye failure
Check Smart-Board settings.
Check if knob's arrow points to label
arrow.
Check for proper connection of
sensor wire to VS control board
Bin Thermostat
Symptom Probable Cause Possible Correction
Check for ice on bin thermostat
capillary tube
No ice, b in code display Bin stat is open
Unit overfills, shuts off on
photo-eyes
Bin stat is stuck closed
September 2009
Page 42
Check for cold ambient in bin
Check continuity of bin thermostat
when capillary tube is warm,
replaced if does not close
Check position of bin thermostat
capillary tube.
Check continuity of bin thermostat
when ice is on the capillary tube,
replaced if does not open
Page 43
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
02-4294-01 Rev.A.
Adjust Ice Level
L
o
w
e
r
Bin
Full
Smart-Board Advanced Feature Control™
See Instructions for Available Features
34
SEL
02-4293-01
ENTER
ESC
01/07
02-4294-01 Rev. A.
Adjust Ice Level
L
o
w
e
r
Bin
Full
02-4294-01 Rev. A.
Adjust Ice Level
L
o
w
e
r
Bin
Full
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.
KVS
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
•
Planning to sanitize the bin
•
Faster turnover for fresher ice
•
• Certain dispenser applications where
maximum ice level is not desired
Use of adjustable ice level control
There are several positions the ice level can be set
to, including Off (knob and label indicators lined
up), where it fills the bin until the standard bin
control shuts the machine off. See the kit’s
instructions for complete details.
Rotate the adjustment post to the desired ice level.
The machine will fill up to that level and when it
shuts off the indicator light next to the adjustment
post will be On.
Dispenser applications:
Set the adjustment knob to
either the first or second
position CW after the
maximum fill position.
Smart-Board
Optional Advanced Feature Board (KSBU)
When this option is present there is an additional
display panel in the area below the main control
board. It is not visible when the front panel is on.
The Advanced Feature Board’s features include:
• Seven day programmable ice level setting
when used with the optional Ultrasonic ice
level control
•
Recording of machine operation
•
Recall of malfunctions with the time they
occurred.
Optional Remote Lock Out (KSL)
This add on allows remote on-off control of the
machine, and is generally installed by leasing
companies. When the board has been remotely
locked out and shut off it must be reset by the
person or company that locked it out. It cannot be
reset on site.
Note: The maximum fill position is when the arrow
on the knob points to the arrow on the label.
September 2011
Page 43
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
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.
Bin
Thermostat
Mounts Here
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
September 2009
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Page 45
N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
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.
Electrical Shock Hazard.
Disconnect electrical power
before beginning.
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.
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.
Apply Food
Grade
Grease Here
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.
•
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.
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.
7. Reverse to reassemble: specific tools and
materials are required to install properly.
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.
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
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.
Ice Sweep Removed
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.
Remove allen head cap screws
September 2009
Page 46
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
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 flights.
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 flight 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
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
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
(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).
3. Remove the snap ring or wire retainer from the
groove under the water seal.
Snap Ring
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.
Bottom of
Stationary
Water Seal
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.
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
Repair Procedures: Replace the Evaporator:
(Assuming all the steps for removal of the thrust
bearing, breaker, auger, and water seal have been
performed.)
Electrical Shock Hazard.
Disconnect electrical power
before beginning.
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.
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.
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.
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.
September 2009
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
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.
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 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 fine 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 fluid
ounces, do not overfill.
Gear Case Cover Assembly
Note: The gears and bearings are available only as
pressed together sets.
September 2009
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Gear Case with First and Second Gears
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N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
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.
Electrical Shock Hazard.
Disconnect electrical power
before beginning.
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.
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.
September 2009
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