Scotsman FME2404 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.

NME1854 & FME2404

January 2000

Page 1

Table of Contents

FOR THE INSTALLER ······································ Page 2

FOR THE INSTALLER: Environmental Limitations ························ Page 3

FOR THE INSTALLER ······································ Page 4

FOR THE INSTALLER: Location ································· Page 5

FOR THE PLUMBER ······································· Page 6

FOR THE ELECTRICIAN ····································· Page 7

FOR THE INSTALLER ······································ Page 8

START UP ············································ Page 9

COMPONENT DESCRIPTION ·································· Page 10

COMPONENT DESCRIPTION ·································· Page 11

COMPONENT DESCRIPTION: Control Box ··························· Page 12

ELECTRICAL SEQUENCE ···································· Page 13

OPERATION: Performance ···································· Page 14

OPERATION: Water ······································· Page 15

OPERATION: Refrigeration ···································· Page 16

CLEANING and SANITATION ·································· Page 17

SENSOR MAINTENANCE ···································· Page 18

BEARING MAINTENANCE ···································· Page 19

AIR COOLED CONDENSER MAINTENANCE ·························· Page 20

AUGER MAINTENANCE ····································· Page 21

SERVICE DIAGNOSIS: ······································ Page 22

SERVICE DIAGNOSIS ······································ Page 23

CONTROL SYSTEM DIAGNOSTICS ······························ Page 24

REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls ··············· Page 25

REMOVAL AND REPLACEMENT: Bearing And Breaker ···················· Page 26

REMOVAL AND REPLACEMENT: Auger ···························· Page 27

REMOVAL AND REPLACEMENT: Water Seal ·························· Page 28

REMOVAL AND REPLACEMENT: Evaporator ·························· Page 29

REMOVAL AND REPLACEMENT: Gearmotor ·························· Page 30

REMOVAL AND REPLACEMENT: Fans ····························· Page 31

REFRIGERATION SERVICE ··································· Page 32

This manual was printed on recycled paper. Keep

it for future reference.

Note the Warning symbol where it appears, it

marks a possible hazard.

FOR THE INSTALLER

The FME2404 and the

NME1854 are modular flakers

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.

·BH1366 or BH1666, 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.

NME1854 & FME2404

June 2002

Page 2

Model Series Dimensions

(w/o Bin)

WxDxH

Basic

Electrical

Ice

Type

Condenser

Type

Minimum

Circuit

Ampacity

Max.

Fuse

Size

Refrigerant

Charge,

R-404A

FME2404AS-32 A or B 42" x 24" x 27" 208-320/60/1 Flake Air 21.0 25 30 oz

FME2404WS-32 A 42" x 24" x 27" 208-320/60/1 Flake Water 19.8 25 24 oz.

FME2404WS-32 B same 208-230/60/1 Flake Water 19.8 25 22 oz.

FME2404AS-3 A or B 42" x 24" x 27" 208-230/60/3 Flake Air 15.9 20 30 oz

FME2404WS-3 A 42" x 24" x 27" 208-230/60/3 Flake Water 14.6 20 24 oz.

FME2404WS-3 B same 208-230/60/3 Flake Water 14.6 20 24 oz

NME1854AS-32 A or B 42" x 24" x 27" 208-230/60/1 Nugget Air 21.0 25 30 oz

NME1854WS-32 A 42" x 24" x 27" 208-230/60/1 Nugget Water 24 oz.

NME1854WS-32 B same 208-230-60/1 Nugget Water 22 oz.

NME1854AS-3 A or B 42" x 24" x 27" 208-230/60/3 Nugget Air 15.9 20 30 oz

NME1854WS-3 A 42" x 24" x 27" 208-230/60/3 Nugget Water 14.6 20 24 oz.

NME1854WS-3 B same 208-230/60/3 Nugget Water 14.6 20 22 oz

* Per system. Always go by the nameplate

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

Electrical Inlet

Water Inlet 38" Flare

Drain ¾" FPT

BACK VIEW

Note: Allow 6" behind and 6"

above the unit for air

circulation, utility

connections, and service.

Condenser Inlet (W/C):

38" FPT

9.5"

Condenser Drain (W/C):

½" FPT

18.9"

18.74

15.8"

5.25"

14.9

TOP VIEW

34.84"

18.28"

13.84"

SPECIFICATIONS:Ice Machine

Ice Chute

2.64" x 6.2"

Installation Limitations:

This ice system is designed to be installed indoors,

in a controlled environment:

Min Max

Air Temperature 500F 1000F

Water Temperature 400F 1000F

Water Pressure 20 PSI 80 PSI

Voltage 198 VAC 253 VAC

(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.

RO Water Limitation: Water conductivity must be

no less than 35 microSiemens/cm.

NME1854 & FME2404

May 2001

Page 3

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

FOR THE INSTALLER

Location:

After uncrating and inspection the unit is ready for

installation. Install the machine in a location where

it has enough space around it to be accessible for

service, and reserve a minimum of 6" at the back

for air circulation on air cooled models.

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, instead 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 machine:

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.

NME1854 & FME2404

January 2000

Page 4

Typical Storage Bin with Extension and Bin Top

NME1854 & FME2404

January 2000

Page 5

FOR THE INSTALLER: Location

ALLOW ROOM

FOR AIR

CIRCULATION

AND SERVICE

ACCESS

DO NOT STACK ANYTHING IN

FRONT OF THE MACHINE

FOR THE PLUMBER

CONFORM TO ALL APPLICABLE CODES

Water Inlet

Air Cooled Models: Connect to a water supply

that is cold and potable. Use 38" O.D. copper

tubing, and connect to the single 38" 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 38" O.D. copper

line is recommended, with a separate hand valve

to control it. It is connected to a single 38" 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: Connect a drain tube to the

one ¾" FPT gravity drain fitting at the back of the

cabinet (used or both ice making systems). A ¼

inch per foot fall is the minimum pitch for the drain

tubing. There MUST be a vent at the highest point

of the drain line, and the ideal drain receptacle is a

trapped and vented floor drain.

Use only ¾" rigid tubing.

Water Cooled Models: Install a separate drain

tube for the condenser discharge water. There is

one drain for both ice making systems. Connect it

to the ½" FPT condenser drain connection at the

back of the cabinet.

Storage Bin: Connect a separate gravity type

drain tube, similar to the air cooled drain. Insulation

of this drain line is recommended.

NME1854 & FME2404

January 2000

Page 6

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

FOR THE ELECTRICIAN

CONFORM TO ALL APPLICABLE CODES

Connect electrical power to the leads 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 machine must be connected to its own

electrical circuit so that 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.

NME1854 & FME2404

January 2000

Page 7

WATER

COOLED

AIR

COOLED

POWER

SUPPLY

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?

NME1854 & FME2404

January 2000

Page 8

START UP

Pre-Start Inspection

1. Remove the front and side service panels.

2. Check that any 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 automatic.

There will be a short (15 second) delay before the

gear motor and compressor start.

4. Air cooled models will begin to discharge warm air

out the back of the cabinet. Water cooled models

will discharge warm water into the drain.

5. The unit will 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 and mail it

to Scotsman.

NME1854 & FME2404

January 2000

Page 9

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

COMPONENT DESCRIPTION

Control Box: Contains the electrical controls that

operate the machine.

High Pressure Cut Out Switch: An automatic 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.

Low Pressure Cut Out Switch: An automatic reset

control that shuts off the ice machine when the low

side pressure drops below a preset point, 15 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.

NME1854 & FME2404

January 2000

Page 10

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.

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