Scotsman Ice Machine AFE400 Installation Manual
INTRODUCTION
AFE400
To the owner or user: This service manual is
intended to provide you, and the maintenance or
service technician, with the information needed to
install, start up, clean, maintain and repair this
product.
The AFE400 is an ice machine that produces
flaked ice and stores it in a insulated bin. It
automatically maintains the level of ice by turning
on when the ice level falls and switches off when it
is full.
This unit in serviceable in place; the ice storage
bin and hood may be removed from the chassis to
allow service access without removing the ice
machine from its installed location. The
refrigeration system uses R-134a as the
refrigerant.
Table of Contents
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4
Plumbing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6
Cabinet Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 7
Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8
Electrical Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9
Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11
Water Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15
Refrigeration Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16
Technical Charateristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 17
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 18
Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20
Parts lists and wiring diagrams are located in
the center of this manual, printed on yellow
paper.
Keep this manual for reference.
This manual was printed on recycled paper.
May 1995
Page 1
AFE400
Specifications
14.25 IN
The nameplate is located
on the back panel.
A serial number plate is
located behind the right
grill, in front of the control
box, on the base.
Model Number Dimensions
(w/o) legs
Basic
Electrical
H x W x D
AFE400AE-1A
AFE400WE-1A
AFE400AE-6A
33 x 24
33 x 24
33 x 24
1
⁄4 x 24
1
⁄4 x 24
1
⁄4 x 24
115/60/1 Flake Air 9 15 15 oz
115/60/1 Flake Water 9 15 10 oz
230/50/1 Flake Air 9 15 15 oz
A scoop and legs (6") are included.
The unit is equipped with an electrical power cord,
but should only be plugged into a circuit dedicated
to the ice machine.
Ice Type Condenser
Type
Typical
Amps
Maximum
Fuse
SERIAL
NUMBER
PLATE
Refrigerant
Charge,
R-134a.
June 1995
Page 2
For The Installer: Environmental Limitations
The ice machine must be installed indoors in a
controlled environment.
Minimum Maximum
Air Temp 50
Water Temp 40
Water Pressure 20 PSI 80 PSI
Voltage (60 Hz) 103.5 126.5
Voltage (50 Hz) 207 253
0
F. 1000F.
0
F. 1000F.
AFE400
AIR OUT
Operating the ice machine outside of the above
limitations, or outdoors, is potentially damaging to
the machine, and it is misuse of the machine. This
may void the war r a nt y.
Scotsman Ice Systems are designed and
manufactured with the highest regard for safety
and performance. They meet or exceed the
standards of UL, NSF , and CUL.
Scotsman assumes no liability or 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.
AIR IN
Airflow on air cooled models:
••Intake through the right grill.
••Exhaust from the left grill.
Do not install wher this air flow is blocked.
The AFE400 has a removable cabinet. When
installed, the machine should have some extra
clearance (1/8") on the left and right sides so that
the cabinet may be easily removed when the
machine is in place.
June 1995
Page 3
AFE400
Installation:
Water
The water supply for this ice machine has been in
contact with many materials since it fell from the
sky as rain. All rain is slightly acidic, and tends to
dissolve the materials it comes in contact with.
During water’s journey to the ice machine, it has
flowed over and through the ground, been picked
up by a municipal or private pump, forced through
a series of pipes of differing construction and may
have been treated by the municipality providing
the water.
The water supplied to this ice machine will then
contain a variety of substances that will likely show
up as solids during the ice making process. These
solids are similar to those found when water is
boiled out of a saucepan. Only the water boils
away, and the minerals that were in the water
solidify in the pan. During ice making the water is
frozen into ice, and many of the minerals stay
behind in the ice machine water system. After time
the minerals will have to be dissolved by ice
machine cleaner, then flushed away during the
cleaning process.
An ice machine is a food manufacturing plant; it
takes a raw material, in this case water, and
transforms it into a food product, ice. The purity of
the water is very important in obtaining pure ice
and in maximizing product life.
The water to the ice machine should be filtered.
Water filters vary greatly in ability and function.
Install one that filters out suspended solids to a
dimension of 5 microns or less. The finer the filter
the better, but finer filters may plug-up sooner than
course ones. It may be necessary to add a course
filter ahead of the fine filter to prolong filter life.
This ice machine may be installed in the open or
under a counter. No clearance is required at the
sides or top beyond what’s needed to place the
cabinet into position. Air cooled models blow air in
and out through the grills at the front. Space is
required for utility connections at the back.
The ice machine is not designed for outdoor
use. It must be installed indoors, in a
controlled environment. The air and water
temperatures must not exceed rated limits.
Electrical power is supplied through a cord
connected to the unit. All local codes must be
followed.
Pre-installation:
1. Inspect the place where the ice machine is to be
installed. Check for:
••space for the cabinet
••water supply,
••drain availability
••and electrical power supply.
No extension cords are allowed. The building drain
inlet must be lower than the drain outlet(s) at the
back of the ice machine. The water supply must
have a hand shut off valve accessible when the
unit is installed.
2. Determine the method of installation, is the
machine to be installed under the counter? Is the
drain in the floor under the machine? Is the water
inlet accessible from the top?
Have the water tested. Either acidic water or
alkaline water will cause corrosion. Dissolved
solids cannot be filtered out. Check with a water
treatment specialist regarding testing, treatment
and filters.
May 1995
Page 4
Installation:
AFE400
For The Plumber
1. Connect cold potable water to the 3/8" male
flare at the top back of the cabinet. A water filter is
recommended. Flush the water line prior to
connecting to the ice machine.
A loop of copper tubing may be used between the
ice machine and the water supply. This will allow
the ice machine to be pulled out from its installed
location without disconnecting the water line. No
back-flow preventer is required in the inlet potable
water line because provision for that is
incorporated in this N.S.F. listed product (the float
seat is above the reservoir water level and cannot
siphon).
2. Connect a drain tube the drain fitting. If water
cooled, the drain tubes must be run separately.
The bin drain fitting is 3/4" F.P.T. brass.
AIR COOLED
PLUMBING
••Drain tube material must be rigid and meet local
code.
••Traps in the bin drain line without vents ahead
of them will cause poor draining.
••The bin drain must be vented if there is a long
horizontal run (5’ or more). All drains are
gravity, and must have a minimum fall of 1/4"
per foot of horizontal run.
••Maintain the air gap required by local code
between the end of the drain tubes and the
building drain receptacle.
••Drain tubing should be insulated to prevent
condensation from forming on the tubing.
3.The unit is set up for drain connections on the
outside of the cabinet. To connect the drains inside
would require the removal of the drain fittings
attached to the back panel, and field fabricated
drain tubes routed inside the base of the unit.
BIN DRAIN
FLOOR
DRAIN
RESERVOIR
OVERFLOW
DRAIN
CONDENSER
DRAIN
POTABLE
WATER
INLET
May 1995
Page 5
WATER COOLED
PLUMBING
POTABLE
WATER INLET
CONDENSER
INLET
AFE400
Installation
For The Electrician
This is a cord-connected unit, and must be on a
separate single pha se power supply. Check the
nameplate for the correct voltage. The maximum
fuse size for this circuit should be 15 amps, per the
nameplate use fuses, or HACR circuit breakers.
Follow All Local Codes - THIS UNIT MUST BE
GROUNDED. Do not use extension cords and do
not disable or by-pass ground plug on electrical
plug.
After Utility Connections:
1. Level the cabinet, use the leg levelers on the
end of the legs to adjust the cabinet height. (Legs
should have been installed when the unit was
unpacked).
2. Wash the bin and hood. If desired, the interior of
the bin could be sanitized.
3. Locate the scoop, wash it and have it available
for use when needed.
Final Check List
1. Is the ice maker cabinet in a room where
ambient temperatures are within the minimum and
maximum temperatures specified?
2. Has the water supply been connected?
3. Is the water pressure adequate?
4. Have the water connections been checked for
water leaks?
5. Have the drain connections been made?
6. Have the drain connections been checked for
leaks?
7. Is the cabinet level?
8. Is the ice machine plugged into an electrical
power supply of the correct voltage and is the ice
machine the only load on that circuit?
9. Has all of the shipping material been removed
from the inside of the cabinet?
12. Has the owner/user been given the name and
telephone number of the authorized Scotsman
Service Agency serving that location?
10. Has the bin and cabinet been wiped clean and
sanitized?
1 1. Has the Customer Evaluation & Warranty
Registration form been filled out? Check for correct
model and serial numbers from the nameplate,
then mail the completed form to Scotsman.
June 1995
Page 6
Removal of the Cabinet
One of the most useful features of this ice machine
is the ability to remove the cabinet from the ice
machine without removing the ice machine from its
installed position.
To Remove:
1. Switch the master switch to OFF. Be certain the
ice machine has been switched off.
2. Open the bin door and turn the knobs to
unscrew the mounting bolts at the left and right
inside of the ice storage bin. Remove the mounting
bolts.
3. Pull the hood and door assembly straight out
until it can be lifted up. Caution: the door may be
free to come out the back of the hood when
removed from the cabinet base.
4. To remove the cabinet base the hood must be
removed first.
5. Remove 4 screws and the two grills at the front
of the base.
STEP 2
STEP 3
AFE400
HOOD
6. In the area exposed when the grills are removed
are two knobs similar to those removed in step 2.
Unscrew and remove the two knobs.
7. Locate bin drain. Loosen hose clamp holding
drain tube to fitting and pull the drain tube off of the
fitting.
8. Lift up the front of the base and rotate the base
up and off of the ice machine.
The machine is now exposed for service.
STEP 8
STEP 5
STEP 6
BIN
DRAIN
May 1995
Page 7
AFE400
Component Location
The ice machine is designed for front service.
Many components are serviceable from the front
without removing the cabinet. With the cabinet
removed, nearly all components are serviceable.
In the bin area can be found
•• Float
•• Reservoir
•• Evaporator
•• Bin Thermostat sensing tube
Behind the right front grill on the front edge of the
control box:
•• Bin thermostat
•• Master switch
Inside the control box are the auger delay control,
low pressure cut out, and the contactor.
Auger Delay Pressure Control: This pressure
switch, connected to the low side of the
refrigeration system, controls the auger drive
motor.
High Pressure Cut Out (water cooled only): The
pressure switch is designed to open and shut off
the machine should the high side refrigeration
pressure become too high, usually as a result of
not enough water through the water cooled
condenser.
It is a manual reset.
On-Off switch: This toggle switch shuts off the
machine. It is not a complete disconnect.
Bin Thermostat: This thermostat turns the
machine on and off in response to changes in
temperature of the capillary tube. At the minimum
setting, it opens at 350 F. and closes at 450 F. At
the maximum setting, it opens at 51oF. and closes
at 61oF. See "Initial Start Up" for adjustment
information.
CUTAWAY VIEW
Air Cooled Shown
RESERVOIR
STRAINER
COVER PLATE
BIN THERMOSTAT
BRACKET
CONTROL BOX
May 1995
Page 8
HI PRESSURE CUT OUT
(Water Cooled Only)
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