Scotsman FME2400 Bedienungsanleitung

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 system.

This product contains 2 separate ice making

systems in one cabinet.

TABLE OF CONTENTS

Installation

For the Installer

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Storage Bin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

For the Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Electrical Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Removal and Replacement

Reservoir and Bin Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Bearing and Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Water Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Gear motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Fan Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Electronic Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Parts lists and wiring diagrams are in the center of this manual, printed on yellow paper.

This manual was printed on recycled paper. Keep

it for future reference.

Note the Warning symbol where it appears, it

marks a possible hazard.

NME1850 & FME2400

January 1994

Page 1

FOR THE INSTALLER

The FME2400 and the

NME1850 are designed to fit

the following Scotsman storage

bins:

B90 and extensions

(with bin top KBT18)

BH800 no bin top required.

BH900 using bin top KBT14.

BH1360, no bin top required.

When installing a new system,

check to be sure that you have

everything you need before

beginning:

Correct Bin

Correct Ice Machine

Correct Bin Top (if required)

All kits, legs, and information

required for the specific job.

Model Dimensions

(w/o Bin)

W x D x H

Basic

Electrical Ice Type Condenser

Type

FME2400AE-32A 42" x 24" x 27" 208-320/60/1 Flake Air

FME2400WE-32A 42" x 24" x 27" 208-320/60/1 Flake Water

FME2400AE-3A 42" x 24" x 27" 208-230/60/3 Flake Air

FME2400WE-3A 42" x 24" x 27" 208-230/60/3 Flake Water

NME1850AE-32A 42" x 24" x 27" 208-320/60/1 Nugget Air

NME1850WE-32A 42" x 24" x 27" 208-320/60/1 Nugget Water

NME1850AE-3A 42" x 24" x 27" 208-230/60/3 Nugget Air

NME1850WE-3A 42" x 24" x 27" 208-230/60/3 Nugget Water

The normal finish for the ice

machine is

enamel-sandalwood. A

stainless steel panel kit,

Electrical Inlet

Water Inlet 3/8" Flare

Drain 3/4" FPT

BACK VIEW

Note: Allow 6" behind and

6" above the unit for air

circulation, utility

connections, and service.

Ice Chute

2.64" x 6.2"

Condenser Inlet (W/C):

3/8" FPT

9.5"

Condenser Drain (W/C):

1/2" FPT

18.9"

18.74"

15.8"

5.25"

14.9"

TOP VIEW

34.84"

18.28"

13.84"

SPECIFICATIONS : ICE MAKER

Refrigerant Charge*

Air Cooled 30 oz.

R-404A

Water

Cooled 24 oz.

R-404A

* Per system. Always go

by the nameplate.

NME1850 & FME2400

January 1994

Page 2

Installation Limitations:

This ice system is designed to be installed indoors,

in a controlled environment:

Min Max

Air Temperature 500F1000F

Water Temperature 400F1000F

Water Pressure 20 PSI 80 PSI

Voltage -5% +10%

(Compared to the nameplate)

Operating the machine outside of the limitations is

misuse and can void the warranty.

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 is not intended as a complete

resource for water related questions, but it does

offer these general recommendations:

1. Check with a water treatment specialist for a

water test, and recommendations regarding filters

and treatment.

2. In most cases, the water used to make ice

should be filtered or treated, depending upon the

water. There is no one type of water filter that will

be effective in all situations. That is why a water

test is important.

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.

FOR THE INSTALLER: Environmental Limitations

1.25"21.12"Drain

3/4"

FPT

Typical Storage Bin - B90

NME1850 & FME2400

January 1994

Page 3

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

around it to be accessible for service, and

minimum of 6" be allowed at the back for air

circulation on air cooled models. Try to avoid hot,

dirty and crowded locations. Be sure that the

location for the machine is within the limitations

described on page 3.

Storage Bin:

Tip the storage bin on its back, using parts of the

carton to protect the exterior finish. Install the legs

into the threaded holes in the bottom of the bin.

Turn the leg levelers all the way in preparation for

leveling later. Return the bin to the upright

position, remove paper covering the bin gasket.

Note: Do not push bin into position, but lift it there.

Pushing a bin, especially one with ice in it, can

cause damage to the legs and the leg mounts.

Install the appropriate bin top on the bin, according

to the instructions for the bin top.

Ice Maker:

The machine is heavy, so the use of a mechanical

lift is recommended for lifting the machine high

enough to install on top of the bin. After the unit is

placed on the bin, line it up so it is even with the

back side. Secure the machine to the bin with the

hardware provided with the machine.

Remove the front panel and remove any shipping

blocks.

Typical Storage Bin with Extension and Bin Top

NME1850 & FME2400

January 1994

Page 4

FOR THE INSTALLER: Location

ALLOW ROOM

FOR AIR

CIRCULATION

AND SERVICE

ACCESS

DO NOT STACK ANYTHING IN

FRONT OF THE MACHINE(S)

NME1850 & FME2400

January 1994

Page 5

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, and connect to the single 3/8" male flare at

the back of the cabinet. This connection supplies

water to both ice making systems. Install a hand

valve near the machine to control the water supply.

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 single 3/8"

FPT condenser inlet at the back of the cabinet.

This connection supplies water to both water

cooled condensers. The water pressure to all lines

must always be above 20 psig, and below 80 psig.

Drains

Air Cooled Models: There is one 3/4" FPT drain

for both ice making systems 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. There is one drain for both ice

making systems. Connect it to the 1/2" condenser

drain connection at the back of the cabinet.

Storage Bin : A separate gravity type drain needs

to be run, similar to the air cooled drain. Insulation

of this drain line is recommended.

COMPLETE PLUMBING INSTALLATION, WATER

COOLED

WATER

COOLED

HAND

VALVE

CONDENSER

INLET

WATER

FILTER CONDENSER

DRAIN

VENTED

DRAIN

AIR COOLED

MODELS

HAND

VALVE

FIELD

SUPPLIED

FILTER

WATER

INLET VENTED

DRAIN

NME1850 & FME2400

January 1994

Page 6

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 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.

WATER COOLED

AIR COOLED

POWER

SUPPLY

NME1850 & FME2400

January 1994

Page 7

FOR THE INSTALLER Final Check List

1. Is the ice system installed indoors in a location

where the air and water temperatures are

controlled, and where they do not exceed the

design limitations?

2. Is there an electrical service disconnect within

sight of the installed machine? Has the voltage

been checked, and compared to nameplate

requirements?

3. Have all the plumbing connections been made

and checked for leaks?

4. Has the machine and bin been leveled?

5. Is there a minimum of 6" clearance at the back

of the machine for proper service access and air

circulation?

6. Is the water pressure a minimum of 20 psig?

7. Has the machine been secured to the bin?

8. Is there clearance above the top of the machine

for service access?

9. Is there a water shut off valve installed near the

machine?

10. Have all of the shipping blocks been removed?

NME1850 & FME2400

January 1994

Page 8

START UP Pre-Start Inspection

1. Remove the front and side service panels.

2. Check that the styrofoam shipping blocks have

been removed.

3. 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

turns freely (air cooled).

4. Check that the unit is installed correctly

according to the final check list (page 8).

Start Up

1. Go through the prestart inspection.

2. Open the 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 now on

automatic.

A. There should be a short (15 second) delay

before the gear motor starts.

B. After the gear motor starts, the compressor will

start.

4. On air cooled models, the condenser will begin

to discharge warm air, on water cooled models,

the water regulating valve will open, and warm

water will be discharged into the drain.

5. The unit should soon be making ice, if desired,

the low side pressure of each system may be

checked: it should be 33 psig + or - 2 PSIG.

The suction line temperature at the compressor is

normally very cold, nearly to the point of frost up to

the compressor body, but not on it.

The air cooled discharge pressure will depend

upon air and water temperatures, but should be

between 200 psig and 280 psig.

The water cooled discharge pressure should be

constant at about 245 psig.

The above numbers are for new, clean machines,

you can expect to see some values higher, and

some lower between different units.

6. THERE ARE NO ADJUSTMENTS TO MAKE,

so replace the panels.

7. Clean and/or sanitize the storage bin interior,

wipe off the exterior with a clean, damp cloth.

8. Give the owner/user the service manual, instruct

him/her in the operation of the unit, and make sure

they know who to call for service.

9. Fill out the manufacturers registration card, and

mail it to Scotsman.

10. Fill out the field quality audit form, and mail it to

the Scotsman factory.

The following procedure applies to each of the two separate ice making systems.

NME1850 & FME2400

January 1994

Page 9

COMPONENT DESCRIPTION

Control Box: Contains the electrical controls that

operate the machine.

High Pressure Cut Out Switch : A manual reset

switch sensing the high side refrigeration pressure.

It is set to shut the machine off if the discharge

pressure should ever exceed 450 psig.

Evaporator: A vertical stainless steel tube,

refrigerated, and water filled. In it there is a

stainless steel auger.

Compressor: The refrigerant vapor pump.

Reservoir: Float operated, it maintains the water

level in the evaporator at a constant level, it also

contains the water level sensor.

Water Level Sensor: Senses if there is water in

the reservoir to make ice out of. Will shut the

machine off it there is none.

Ice Discharge Chute : Directs the ice produced

by the evaporator into the storage bin.

Ice Level Sensor: An electronic "eye", it senses

the presence of ice in the bottom of the ice

discharge chute. Operates to turn the ice machine

on and off automatically as the level of ice in the

bin changes.

Gear Motor: An oil filled, speed reduction

gearbox, driving the auger.

Drain Tube : When uncapped and lowered, drains

the evaporator.

Condenser: Air or water cooled, where the heat

removed in ice making is discharged.

Expansion valve : The refrigerant metering

device.

Hi Pressure Cut

Outs

Condenser

Expansion Valve

Reservoir

Drain Tube

Gearbox

Control Box

There are two of each of the above components in these machines.

NME1850 & FME2400

January 1994

Page 10

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