Page 1
Installation and
User's Manual for
Ice Maker-Dispenser
Models MDT5N25 and MDT5N40
Page 2
MDT5N25 & MDT5N40 User Manual
INTRODUCTION
To the owner or user: This manual is intended to
provide you, and the maintenance or service
technician with the information needed to install,
The ice dispensing section is a seamless plastic
storage bin, with a stainless steel rotating vane to
sweep the ice into the dispensing chute.
start up, clean, and maintain this ice
maker-dispenser.
The machine is a combination nugget ice maker
and countertop dispenser, with the option of wall
mounting.
Table of Contents
FOR THE INSTALLER: Specifications ····································Page 2
FOR THE INSTALLER: Environmental Limitations······························Page 3
FOR THE INSTALLER ············································Page 4
FOR THE INSTALLER: Wall Mount Kit····································Page 5
FOR THE PLUMBER·············································Page 6
FOR THE ELECTRICIAN ··········································Page 7
FOR THE INSTALLER: Final Check List & Start Up ·····························Page 8
OPERATION: Ice Vending ··········································Page 9
DISPENSE AREA SANITATION ·······································Page 10
CLEANING and SANITIZING ········································Page 11
MAINTENANCE AND CLEANING ······································Page 12
SERVICE DIAGNOSIS ············································Page 13
SERVICE DIAGNOSIS: Circuit Board ····································Page 14
November 2008
Page 1
Note this symbol when it appears.
It marks a possible hazard.
Page 3
MDT5N25 & MDT5N40 User Manual
FOR THE INSTALLER: Specifications
This ice maker-dispenser is designed to be
mounted on a machine stand, or a countertop, or
using wall mounting kit KWB3, hung from a wall.
The sink may be retained, or removed and the
optional longer splash panel (KSP5) installed in
place of the original. Instructions for each kit are
included in this service manual.
20.5"
14.06"
2.56"
1.88"dia
Before beginning the installation, check that all the
materials and kits required are available at the
installation location.
NAMEPLATE
on back panel
3.54"
4.5"
3/8" FPT
condenser
Water Inlet
(Water Cooled)
ELECTRICAL JUNCTION BOX
3/8" Flare
Potable Water Inlet
Optional for water and
drain lines
1/2" FPT
Cond. Drain
(Water Cooled)
3/4" FPT
Drain
12.27"
3.12"
1.12"
22.5"
Serial Number Plate
inside on upper base
below control box.
SPECIFICATIONS
Model Number Dimensions (w/o stand)
H”xW”xD”
MDT5N40A-1J 48.5 x 26 x 22.5 115/60/1 Air 24 19.3 25
MDT5N40W-1J same 115/60/1 Water 17 17.8 20
MDT5N40A-6J same 230/50/1 Air 24 11.5 15
MDT5N40W-6J same 230/50/1 Water 17 10.9 15
MDT5N25A-1J 41 x 26 x 22.5 115/60/1 Air 24
MDT5N25W-1J same 115/60/1 Water 17
MDT5N25A-6J same 230/50/1 Air 24
MDT5N25W-6J same 230/50/1 Water 17
Basic
Electric
Cond.
Type
Ref. Charge,
R-404A in ounces*
Minimum Circuit
Ampacity
19.3 25
17.8 20
11.5 15
10.9 15
5.12"
6.43"
Maximum
Fuse Size
Always check the nameplate for charge info.
August 2010
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MDT5N25 & MDT5N40 User Manual
FOR THE INSTALLER: Environmental Limitations
Installation Limitations
This ice system is designed to be installed indoors,
in a controlled environment.
Minimum Maximum
Air Temp 50
Water Temp 40
0
F. 1000F.
0
F. 1000F.
Water Pressure 20 PSI 80 PSI
Voltage (115v) 104 126
Operating the machine outside of the above
limitations, or outdoors, is potentially damaging to
the machine; also it is misuse of the machine,
which may void the warranty.
Scotsman Ice Systems are designed and
manufactured with the highest regard for safety
and performance. They meet or exceed the
standards of UL and NSF.
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.
Service Limitations
Do not install in a location where the top of the
machine is within 6" of a fixed ceiling. Do not install
air cooled models in a location where there is less
than 6" clearance to the left and right of the
cabinet.
WALL
CUT AWAY
CEILING
CUT AWAY
SPACE
ABOVE
FOR
SERVICE
Water Limitations
An ice machine is a food manufacturing plant; it
takes a raw material, water, and turns it into a food
product, ice. The purity of the water is very
important in obtaining pure ice and in maximizing
product life. This section is not intended as a
complete resource for water questions, but it does
offer these general recommendations:
1. Filter the water used to produce ice. That is the
water going to the “potable” water connection.
Water filters vary greatly in ability and function.
Install one that filters out suspended solids to a
dimension of 5 microns or smaller. The finer the
filter the better, but finer filters will clog sooner than
course ones. It may be necessary to add a course
filter ahead of the fine filter to prolong filter life.
2. Check with a water treatment specialist for a
water test, and recommendations regarding filters
and treatment.
6" SPACE
FOR AIR
(A/C)
Airflow
SPACE
FOR
UTILITIES
6" SPACE
FOR AIR
(AIR COOLED)
November 2008
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MDT5N25 & MDT5N40 User Manual
FOR THE INSTALLER
Location
After uncrating and inspection, the unit is ready for
installation. It is important that the machine be
installed in a location where it has enough space
above and behind it for service. Air cooled models
require a minimum of 6 inches to the left and right
of the machine for air circulation.
Machine Stand Installation
Tip the stand on its back and install the legs, return
the stand to the upright position. Adjust leg levelers
so that the stand does not “rock”.
Counter Top or Machine Stand Installation
The base of the icemaker-dispenser must be
sealed to the object it rests upon. Food grade
silastic sealant such as Scotsman part number
19-0529-01 is recommended.
Place a bead of the sealant on the machine stand
or counter top to match the outside edge of the
cabinet base and sink.
The icemaker-dispenser is heavy: use of a
mechanical hoist is recommended to lift it to the
height required to install it.
The DMS machine stand has holes in the top that
match up with threaded holes in the
icemaker-dispenser. Place the cabinet onto the
machine stand, so that the unit is lined up with the
holes. Secure the ice maker-dispenser to the
machine stand with bolts and washers.
In both counter top and machine stand
installations, wipe off and neatly smooth any
excess sealant. Level the machine stand and
cabinet.
Unpack and install the sink brackets. Fit the sink
assembly onto the two sink brackets, and press
onto the bead of sealant. Wipe off and neatly
smooth any excess sealant from under the sink
edge.
SEAL THE
UNIT TO
THE
COUNTER
OR STAND
Unpack and install the ice and water spouts.
Ice Spout: Slide up and over ice outlet. No
fastener is required to hold it in place.
Water Spout: Slide over stainless steel water
discharge tube, locate and match up with notches
in the base. Rotate clockwise to move spout into
installed position.
Ice Spout
November 2008
Water
Spout
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MDT5N25 & MDT5N40 User Manual
FOR THE INSTALLER: Wall Mount Kit
CAUTION
It is recommended that the wall mounting
installation be done by an experienced contractor.
The weight of the machine when in use may
exceed 350 pounds. The unit should be mounted
on a solid, rigid wall with proper fasteners for that
type of wall and of adequate strength to support
the weight of the machine when in use.
Clearance between the wall and the icemaker is a
maximum of 1 inch. Check utility connections first.
The electrical junction box will have to be removed,
and the electrical connections made inside the
cabinet in compliance with local codes. The
plumbing connections may be made through the
base, or at either side through the pre-punched
holes, using standard plumbing practices.
Interior plumbing lines must be disconnected from
the original connections and plugged when
routing through the side or base.
1. Remove machine top. Attach bracket “A” to
machine using (3) nuts, (3) flat washers, (3)
lock washers, and (3) 5/16-18 bolts received with
the kit.
MDT6N40=38.6"
MTD6N25=30"
7.83
1" CLEARANCE
BASE
HOLE
SIDE
ROUTIN
16"
16"
A
DO NOT LIFT ON SINK
2. Mount brackets “B” and “C” to the wall at the
dimensions shown for the unit. (hardware for this is
not included).
B
Use fasteners and wall of sufficient strength to
carry the use and weight of the
icemaker-dispenser.
3. Lift unit up and hook bracket “A” over bracket
12"
12"
C
“B”. Slide unit until the two remaining holes are
aligned and secure with the remaining (2) 1/4-20
bolts, flat washers and lock washers.
November 2008
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MDT5N25 & MDT5N40 User Manual
FOR THE PLUMBER
CONFORM TO ALL APPLICABLE CODES
Water Inlet
Air Cooled Models: The recommended water
supply is clean, cold water. Use 3/8" O.D. copper
tubing, connect to the 3/8" male flare at the back of
the cabinet. Install a hand valve near the machine
to control the water supply.
Note: Back flow prevention for the potable water
supply is provided by the air gap between the float
valve orifice and the water reservoir overflow.
Water Treatment: In most areas, a water filter of
some type will be useful. In areas where the water
is highly concentrated with minerals the water
should be tested by a water treatment specialist,
and the recommendations of the specialist
regarding filtration and/or treatment should be
followed.
Water Cooled Models: A separate 3/8" O.D.
copper line is recommended, with a separate hand
valve to control it. It is connected to a 3/8" FPT
condenser inlet at the back of the cabinet. The
water pressure to all lines must always be above
20 psig, and below 80 psig.
OPTIONAL
WATER INLET
CABINET
DRAIN
WATER
FILTER
Drains
Air Cooled Models: There is one 3/4" FPT drain
at the back of the cabinet, the drain line is of the
gravity type, and 1/4 inch per foot fall is an
acceptable pitch for the drain tubing. There should
be a vent at the highest point of the drain line, and
the ideal drain receptacle would be a trapped and
vented floor drain. Use only 3/4" rigid tubing.
Water Cooled Models: In addition to the above
mentioned drain, a separate condenser drain must
be installed. Connect it to the 1/2" condenser
drain connection at the back of the cabinet.
November 2008
WATER INLET
SHUT OFF
VALVE
VENTED
DRAIN TUBE
WATER COOLED DETAIL
Condenser
WATER INLET
POTABLE
WATER INLET
Page 6
FLOOR DRAIN
CABINET
DRAIN
Condenser
DRAIN
Page 8
MDT5N25 & MDT5N40 User Manual
FOR THE ELECTRICIAN
CONFORM TO ALL APPLICABLE CODES
The electrical power to the unit is
supplied through the junction box at the
rear of the machine.
Check the nameplate (located on the
back panel) for the voltage
requirements, and for the minimum
circuit ampacity. The machine requires
a solid chassis to earth ground wire.
The ice maker should be connected to
its own electrical circuit so it is
individually fused. Voltage variation
must remain within design limitations,
even under starting conditions.
All external wiring must conform to
national, state, and local electrical
codes. The use of a licensed
electrician is required to perform the
electrical installation.
INDIVIDUAL CIRCUIT
FOR ICE DISPENSER
JUNCTION BOX
Internal to back panel on
some models
November 2008
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MDT5N25 & MDT5N40 User Manual
FOR THE INSTALLER: Final Check List & Start Up
1. Is the icemaker-dispenser installed indoors, in a
location where the air and water temperatures are
controlled, and where they do not go beyond
design limitations?
2. Is there an electrical disconnect (switch or plug
as required) within sight of the installed machine?
Is the machine on a separate circuit? Has the
voltage been checked and compared to nameplate
requirements?
3. Have all of the plumbing connections been
made and checked for leaks?
4. Has the machine been leveled?
5. Is there a minimum of 6 inches of clearance at
the left and right sides of an air cooled machine?
6. Is there a minimum of 6 inches of clearance at
the top and back of the machine for service and
utility connections?
Wall mounted only: Is the machine properly
installed and secured to the wall?
7. Is there a water shut off valve installed near the
machine?
INITIAL START UP
Pre Start Inspection
1. Remove the two front panels.
2. Check that all shipping blocks have been
removed.
3. Remove any and all packing tape (check inside
the storage bin).
4. Inspect the interior of the machine for loose
screws or wires. Check that no refrigerant lines are
rubbing each other. Check that the fan blade on air
cooled models turns freely.
5. Check that the machine is installed correctly
according to the final check list.
Start Up
1. Go through the pre start inspection.
2. Open the water hand valve, observe that water
enters the water reservoir, fills the tube from the
reservoir to the evaporator and then shuts off.
Check for leaks.
3. Switch the master switch on. The electrical start
up sequence is automatic; there will be a short (15
second) delay before the machine starts.
4. On air cooled models, warm air will begin to flow
from the condenser. Water cooled models will
begin to discharge warm water (110
o
F) down the
drain.
5. The unit should soon be making ice.
November 2008
BACK VIEW OF COMPLETED INSTALLATION
ELECTRICAL?
LEVELED?
PLUMBING?
MACHINE
STAND
6. There are no adjustments to make, so replace
the panels.
7. Check ice dispensing by holding a container in
front of the Touch Free ice sensor (just below the
ice delivery spout). Ice should flow from the spout
when a container is present, and stop dispensing
when the container is removed.
8. Switch off the icemaker-dispenser, remove the
top panel and the top of the ice storage bin.
Sanitize the interior of the ice storage bin by wiping
it with a mixture of 1 ounce of household bleach to
2 gallons of water, allow to air dry. Replace all
covers and panels. Switch the icemaker-dispenser
back on.
9. Give the owner/user the service manual, instruct
him/her in the operation and maintenance
requirements of the unit. Make sure they know who
to call for service.
10. Fill out the Customer Evaluation and Warranty
Registration form, and mail it in to Scotsman.
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MDT5N25 & MDT5N40 User Manual
OPERATION: Ice Vending
Dispensing takes place when the
Touch Free sensor’s infrared beam
bounces back to the sensor from a
container placed directly in front of
it.
If the container is in front of the
Touch Free sensor on the left side,
the ice dispensing vane will rotate
and sweep ice over the ice
dispensing chute. Ice will continue
to discharge out this chute as long
as the vane is turning. It stops
when the dispensing vane stops.
If the user does not remove the
·
container, ice will be dispensed
for 60 seconds and then stop.
If the container is in front of the
Touch Free sensor on the right
side, the inlet water valve will open
and water will flow into the
container.
ICE CHUTE
ICE DISPENSING
VANE
BIN BOTTOM
If the user does not remove the
·
container water will be
dispensed for 90 seconds and
then stop.
TOUCH FREE
SENSOR
DRIVE
MOTOR
TOUCH FREE
SENSOR
SINK
The Touch Free System:
Hold or Place a Container in Front of The Touch Free
Sensor & Under The Ice or Water Spout;
Ice or Water Will Be Dispensed Without Touching The
Dispenser
Note: Clear glass containers may not reflect the sensor's
infrared beam and activate dispensing unless the user's
hand or fingers are at the back of the container.
November 2008
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MDT5N25 & MDT5N40 User Manual
DISPENSE AREA SANITATION
The dispense area; spouts, sink, grill and splash
panel will need periodic cleaning and maintenance.
1. The ice chute may be pulled down to remove it
from the ice dispenser. Wash and sanitize it.
2. The sink grill may be removed for washing and
sanitizing.
3. The sink should be flushed with hot water and
wiped clean with sanitizer.
4. The splash panel requires special attention to
clean it.
Push and release the Splash Panel Cleaning
·
switch located to the left of the water spout.
This disables the Touch Free sensors so the
splash panel may be cleaned without vending
ice and/or water.
Wash the splash panel and wipe with with
·
sanitizer.
Re-push the clean switch or allow 2 minutes to
·
pass for the Touch Free system to reset.
November 2008
Page 10
Splash Panel
Cleaning or Touch
Free Disable Switch
Push and Release
Page 12
MDT5N25 & MDT5N40 User Manual
CLEANING and SANITIZING
A Scotsman Ice System represents a sizable investment of time and money in any company’s
business. In order to receive the best return for that investment, it MUST receive periodic
maintenance.
It is the USER’S RESPONSIBILITY to see that the unit is properly maintained. It is always preferable,
and less costly in the long run, to avoid possible down time by keeping it clean; adjusting it as needed;
and by replacing worn parts before they can cause failure. The following is a list of recommended
maintenance that will help keep the machine running with a minimum of problems.
Maintenance and Cleaning/Sanitizing should be scheduled at a minimum of twice per year.
Electrical power will be ON when doing in place
cleaning.
ICEMAKING SYSTEM: In place cleaning
1. Check and clean any water treatment devices, if
any are installed.
2. Remove screws and remove the upper front
panel.
3. Move the ON-OFF switch to OFF.
4. Remove the cover to the ice storage bin, and
remove the ice.
5. Remove the cover to the water reservoir and
block the float up.
6. Drain the water reservoir and freezer assembly
using the drain tube attached to the freezer water
inlet. Return the drain tube to its normal upright
position and replace the end cap.
7. Prepare the cleaning solution: Mix eight ounces
of Scotsman Ice Machine Scale Remover with
three quarts of hot water. The water should be
between 90-115 degrees F.
Scotsman Ice Machine
Scale Remover contains
acids.
These compounds may
cause burns. If swallowed,
DO NOT induce vomiting.
Give large amounts of
waterormilk.Call
Physician immediately. In
case of external contact,
flush with water. Keep out
of the reach of children.
10. After all of the cleaning solution has been
added to the reservoir, and the reservoir is nearly
empty, switch the master switch to OFF.
11. After draining the reservoir, as in step 6, wash
and rinse the water reservoir.
To Sanitize:
Repeat steps 8-11, only use an approved sanitizing
solution in place of the cleaning solution. A
possible sanitizing solution to use could be 1
ounce of household bleach mixed with 2 gallons of
warm (95
12. Remove the block from the float in the water
reservoir.
13. Switch the master switch to ON
14. Continue ice making for at least 15 minutes, to
flush out any cleaning solution. Check ice for acid
taste - continue icemaking until ice tastes sweet.
DO NOT USE any ice produced from the
cleaning solution.
Be sure no ice remains in the bin.
15. Remove all ice from the storage bin.
16. Add warm water to the ice storage bin and
thoroughly wash and rinse all surfaces within the
bin.
17. Sanitize the bin cover, dispensing vane, bin
bottom, and interior with an approved sanitizer
using the directions for that sanitizer.
18. Replace the ice storage bin cover, and the front
panel.
o
F.-115oF.) water.
8. Slowly pour the cleaning solution into the water
reservoir until it is full. Wait 15 minutes, then
switch the master switch to ON.
9. As the ice maker begins to use water from the
reservoir, continue to add more cleaning solution to
maintain a full reservoir.
November 2008
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MDT5N25 & MDT5N40 User Manual
MAINTENANCE AND CLEANING
Moving Parts Hazard.
Disconnect electrical
power to the icemaker dispenser before
beginning.
1. Air Cooled Models: Check the air cooled
condenser for lint, dirt or grease build-up. Clean
with vacuum or soft brush until light can be seen
thru the fins.
BIN CONTROL
SENSOR
BIN CONTROL
SENSOR
3. The bin control uses devices that sense light,
therefore they must be kept clean enough so that
they can “see”. At least twice a year, remove the
bin control sensors from the grommets in the ice
chute, and wipe them clean.
4. The bearing in the breaker should also be
checked at least two times per year.
A. Check the bearing by:
removing the ice chute cover
·
unscrewing the ice sweep
·
removing the water shed
·
unscrewing the breaker cover.
·
Cover
BIN TOP
2. The ice machine senses water level by a probe
located in the water reservoir. At least twice a year,
the probe should be removed from the reservoir,
and the tip wiped clean of mineral build-up.
CLEAN WATER
SENSOR PROBE
CAUTION
THE TIP IS
MADE OF GLASS
Inspect the bearing. There should be plenty of
grease and it should not appear watery or
contaminated.
If the bearing needs grease, inject grease into 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.
5. Check and tighten all bolts and screws.
Note: In some areas, the water supply to the ice
maker will contain a high concentration of
minerals, and that will result in an evaporator and
auger becoming coated with these minerals,
requiring a more frequent removal than twice per
year. If in doubt about the condition of the
evaporator and auger, the auger can be removed
so the parts can be inspected.
November 2008
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MDT5N25 & MDT5N40 User Manual
SERVICE DIAGNOSIS
Symptom Possible Cause Probable Correction
No ice made, nothing operates Unit off due to no power Restore power
Unit off due to master switch in
OFF position
Unit off due to low water level Check water supply, filter,
Unit off due to ice level sensors
(photo-electric eyes) blocked
Unit off due to scale on water level
sensor
Unit off due to water temperature
too high
Unit operates, no ice is vended Check for ice in the bin If no ice, check that ice maker can
Check for jam up of ice in
dispense chute
If there is ice, check that the bin
vane rotates. if not
If there is power to the bin drive
motor, but the vane does not turn
Compressor on, auger motor is off Auger motor windings open Replace auger motor
Auger motor relay does not make Replace circuit board
Contactor stuck Replace contactor
Compressor does not operate Off due to high pressure control
open
Contactor coil is open Replace contactor
Contactor contacts do not make Replace contactor
Start capacitor failed Replace start capacitor
Potential relay failed Replace relay
Compressor windings open Replace compressor
Compressor locked Replace compressor
Switch master switch to ON
strainer, float valve. Correct water
supply
Check/clean ice level sensors
Clean water level sensor
Thermistor will shut down unit at
temperatures over 110
make ice
Check that machine cannot keep
up with needs
Pull chute down and allow ice to
fall out. Return chute to its normal
place.
Check for power to the bin drive
motor, if none, check condition of
Touch-Free ice sensor.
Disconnect electrical power,
remove all ice, check mechanical
condition of ice vane. Replace if
broken.
If ice vane is mechanically sound,
check bin drive, replace if broken.
Check condenser, fan motor, fan
blade, or water supply on water
cooled.
o
F.
November 2008
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MDT5N25 & MDT5N40 User Manual
SERVICE DIAGNOSIS: Circuit Board
1
2
3
Explanation of Indicator Light Position On
Board
On at all times when the master switch is ON and machine is
connected to electrical power.
On when ice level is low (unit making ice).
Normal 6 minute off/delay start. To prevent short cycling, the
machine will not restart after any shut off (except power to the
board) until 6 minutes have passed.
On when water level is low in the reservoir.
1
2
3
4
4
Name and Meaning of
Light or Reset
Power,
ON = Normal
Bin Empty,
ON = Needs Ice
Off Timer,
ON = Unit cycling off
No Water,
ON = Trouble
November 2008
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Page 16
SCOTSMAN ICE SYSTEMS
775 Corporate Woods Parkway, Vernon Hills, IL 60061
800-533-6006
www.scotsman-ice.com
17-3282-01
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