Scotsman MDT6N90 Manual de usuario

Installation and

User's Manual for

Ice Maker-Dispenser

Model MDT6N90

INTRODUCTION

To the owner or user: The service manual you are

reading is intended to provide you, and the

maintenance or service technician with the

information needed to install, start up, clean,

maintain, and service this ice maker-dispenser.

The MDT6 is a combination nugget ice maker and

countertop dispenser. A water station is standard.

The ice making section is equipped with the

following features: electronic controls for bin level

and low water; thermostatic expansion valve; front

service for most components; and R-404A

refrigerant. The ice dispensing section is a

seamless plastic storage bin, with a stainless steel

ice agitator at the bottom to sweep the ice into the

dispensing chute.

MDT6N90 User Manual

November 2008

Page 1

Table of Contents

FOR THE INSTALLER: Specifications ······························ Page 2

FOR THE INSTALLER ······································ Page 3

FOR THE PLUMBER ······································· Page 4

FOR THE ELECTRICIAN ····································· Page 5

FOR THE INSTALLER: Final Check List ····························· Page 6

INITIAL START UP ········································ Page 7

OPERATION: Ice or Water Vending ······························· Page 8

DISPENSE AREA SANITATION ································· Page 9

CLEANING and SANITIZING ··································· Page 10

SENSOR MAINTENANCE ···································· Page 11

BEARING MAINTENANCE ···································· Page 12

SERVICE DIAGNOSIS ······································ Page 13

CONTROL SYSTEM DIAGNOSTICS ······························ Page 14

Note this symbol when it appears.

It marks a possible hazard.

FOR THE INSTALLER: Specifications

This ice maker-dispenser is designed to be

mounted on a machine stand, or a countertop.

Before beginning the installation, check that all the

materials and kits required are available at the

installation location.

Scotsman Ice Systems are designed and

manufactured with the highest regard for safety

and performance. They meet or exceed the

standards of U.L., N.S.F. and other agencies.

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 parts 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 designs are subject to change

without notice.

Water Limitations:

An ice machine is a food

manufacturing plant; it takes in

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.

General recommendations

are:

1. Filter the water used to

produce ice.

2. Check with a water

treatment specialist for a water

test, and any

recommendations regarding

filters and treatment.

MDT6N90 User Manual

August 2010

Page 2

Electrical Junction

Box

3/8" Flare

Water Inlet

3/8" FPT

Cond. Water

Inlet

(W/C)

1/2" FPT

Cond. Drain

(W/C)

3/4" FPT

Drain

.75"

17.59"

5.59"

3/4 FPT

Drain

2.63"

12.5"

6.63"

7.93"

4.63"

3.84"

BACK VIEW

Model Number Model

Series

Dimensions

(w/o stand)

H"xW"xD"

Condenser

Type

Refrigerant

Charge

(R-404A)

Basic

Electrical

Minimum

Circuit

Ampacity*

Max.

Fuse

Size

MDT6N90AS-1 J 45.74 x 35.18 x 29.26 Air 32 115/60/1 18.1 25

MDT6N90WS-1 J same Water 19 same 16.5 20

*Minimum circuit ampacity is used to determine wire size and type per National Electric Code.

Options: Machine stand DMS31.

FOR THE INSTALLER

Location

This ice system is designed to be installed indoors,

in a controlled environment.

Minimum Maximum

Air Temp 500F. 1000F.

Water Temp 400F. 1000F.

Water Pressure 20 psi 80 psi

Voltage 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.

Service Limitations

Do not install in a location where the top of the

machine is within 6" of a fixed ceiling. Air cooled

models require a minimum of 6 inches to the left

and right of the machine for air circulation. It is

important that the machine be installed in a

location where it has enough space above and

behind it for service.

After uncrating and inspection, the unit is ready for

installation.

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 base of the

machine. Secure the machine stand to the base

with 4 5/16" bolts.

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. Connect the sink drain to the dispenser drain

system.

MDT6N90 User Manual

November 2008

Page 3

SEAL

ICEMAKER-

DISPENSER TO

THE COUNTER

TOP OR

MACHINE STAND

Airflow

FOR THE PLUMBER

CONFORM TO ALL APPLICABLE CODES

Water Inlet

Air Cooled Models: Connect a clean, potable

and cold water supply to the 38” male flare at the

back of the cabinet. Install a hand valve near the

machine to control the water supply. Use 38” O.D.

copper tubing.

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: Connect a separate 38”

O.D. copper line, with a separate hand valve to

control it, to the 38” FPT condenser inlet at the

back of the cabinet. The water pressure to all

lines must always be above 20 psig, and below

120 psig.

Drains

Air Cooled Models: Connect a drain tube to the

one ¾” FPT drain fitting (plastic) at the back of the

cabinet, the drain line is of the gravity type, and ¼

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 ¾” rigid tubing.

Water Cooled Models: In addition to the above

mentioned drain, a separate condenser drain line

must be installed. Connect it to the ½ " condenser

drain connection at the back of the cabinet.

MDT6N90 User Manual

November 2008

Page 4

INLET WATER

VENTED

DRAIN

OPTIONAL

WATER

FILTER

SHUT OFF VALVE

FLOOR DRAIN

WATER COOLED

CONDENSER

WATER INLET

CONDENSER

DRAIN

FOR THE ELECTRICIAN

CONFORM TO ALL APPLICABLE CODES

Connect the electrical power supply for the unit to

the wires in 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 would be 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.

MDT6N90 User Manual

November 2008

Page 5

POWER SUPPLY

ELECTRICAL

CONNECTION

FOR THE INSTALLER: Final Check List

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 service

disconnect 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?

7. Is there a water shut off valve installed

near the machine?

8. Have all of the shipping blocks been

removed?

MDT6N90 User Manual

November 2008

Page 6

ELECTRICAL? LEVELED?

WATER

INLET?

DRAINS?

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 the solenoid operated door

over the ice discharge port for properly secured

linkage pins.

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 mode switch to ON. The auger drive

motor and compressor start, beginning the ice

making process.

4. On air cooled models, warm air will begin to flow

from the condenser. Water cooled models will

begin to discharge warm water down the drain.The

unit should soon be making ice.

5. There are no adjustments to make, so replace

the panels.

6. Check ice dispensing by placing a container in

front of the ice dispensing sensor, the dispensing

system should activate and if there is ice in the

machine it should dispense. Repeat for the water

dispense.

7. 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 with a

locally approved sanitizer. A possible sanitizer is a

mixture of 1 ounce of household bleach to 2

gallons of water. Wash the interior of the bin with

the sanitizing solution. Replace all covers and

panels. Switch the icemaker-dispenser back on.

8. 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.

9. Fill out the Customer Evaluation and warranty

Registration form, and mail it in to Scotsman or

MDT6N90 User Manual

September 2013

Page 7

OPERATION: Ice or Water Vending

When the ice dispensing sensor detects a

container in front of it, the control board connects

an electrical circuit to the ice chute door solenoid

causing the ice chute door to open. At the same

time power is connected to the agitator drive

motor.

Dispensing takes place when the agitator sweeps

the ice through the ice dispensing chute: ice will

continue to discharge out this chute as long as the

agitator is turning. It stops when the agitator stops

and the ice chute door

closes.

·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 water sensor on the left

side, the inlet water valve

will open and water will flow

into the container.

·If the user does not

remove the container

water will be dispensed

for 90 seconds and then

stop.

MDT6N90 User Manual

November 2008

Page 8

ICE DISCHARGE CHUTE

STORAGE BIN

AGITATOR

DRIVE MOTOR

TOUCH FREE

SENSOR

SINK

DOOR

SOLENOID

ICE CHUTE

DOOR

ICE CHUTE

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.

MDT6N90 User Manual

November 2008

Page 9

Splash Panel

Cleaning

Switch

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