Scotsman FM1202 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 machine is a modular ice system that fits a

variety of Scotsman ice storage bins.

It features: front service for the freezer, gearmotor,

control box, water reservoir, and bin control; an

electronic circuit for monitoring ice and water level;

a thermostatic expansion valve; and R-22 as the

refrigerant.

This manual covers both the "A" and the "B"

models, as designated by the last letter in the

model number.

This manual was printed on recycled paper.

TABLE OF CONTENTS

Installation

For the Installer

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

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Two units on one bin . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

For the Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Electrical Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Removal and Replacement

Reservoir and Bin Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Bearing and Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Water Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Electronic Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

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

FM1202

August 1993

Page 1

FOR THE INSTALLER

This machine is designed to fit the following

Scotsman storage bins:

B90 and extensions (with bin top KBT18)

BH800 using bin top KBT15 (one unit).

BH800 (two units, no bin top required).

BH900 with KBT24 (one unit)

BH900 with KBT25 (two units side by side)

When installing a new system, check to be sure

that everything is on site before beginning:

Correct Bin

Correct Ice Machine

Correct Bin Top (if required)

All kits, legs, and information required for

the specific job.

Installation Limitations:

This ice system is designed to be installed indoors,

in a controlled environment:

Min Max

Air Temperature500F 1000F

Water Temperature 400F 1000F

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.

Model Number

FM1202AE-3A

FM1202WE-3A

FM1202AE-32A

FM1202WE-32A

Dimensions

(w/o bin)

W x D x H

21" x 24" x 27"

same

Basic

Electrical

208-230/60/3

same

208-230/60/1

same

Ice Type

FLAKE

same

Condenser

Type

Air

Water

Air

Water

The normal finish for the ice machine is

enamel-sandalwood. A stainless steel panel kit,

SPKFM21 may be field installed to convert the unit

to a stainless steel finish.

ELECTRICAL

INLET

WATER

INLET

7.3"

5.25"

3.4"

7.46"

Condenser Inlet 3/8" FPT

Condenser Drain 1/2" FPT

DRAIN

3/4" FPT 4.9"

2.9"

9.43"

BACK VIEW: WATER COOLED

SPECIFICATIONS: ICE MAKER

ELECTRICAL

INLET

2.1"

5.7"

WATER INLET

3/8" FLARE

DRAIN

3/4" FPT

BACK VIEW: AIR COOLED

5.25"

9.5"

Note: Allow 6"

behind and 6"

above either unit

for air circulation,

utility connections,

and service.

Refrigerant Charge*

Air Cooled 32 oz. R-22

Water

Cooled 28 oz. R-22

* Always go by the

nameplate charge.

FM1202

August 1993

Page 2

FOR THE INSTALLER

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 CSA.

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.

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

environmental limitations.

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

FM1202

August 1993

Page 3

FOR THE INSTALLER: Location

TWO UNITS ON ONE BIN

ALLOW ROOM

FOR AIR

CIRCULATION

AND SERVICE

ACCESS

DO NOT STACK ANYTHING IN

FRONT OF THE MACHINE(S)

FM1202

August 1993

Page 4

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.

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.

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.

Storage Bin: A separate gravity type drain needs

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

of this drain line is recommended.

WATER

COOLED

HAND

VALVE

CONDENSER

INLET

WATER

FILTER CONDENSER

DRAIN VENTED

DRAIN

AIR COOLED

MODELS

HAND

VALVE

FIELD

SUPPLIED

FILTER

WATER

INLET

VENTED

DRAIN

FM1202

August 1993

Page 5

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

FM1202

August 1993

Page 6

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 over 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?

FM1202

August 1993

Page 7

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 7).

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 gearmotor starts.

B. After the gearmotor 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 may be checked: it should

be 25 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 220 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 the Scotsman Factory.

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

the Scotsman factory.

FM1202

August 1993

Page 8

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 400 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.

AIR COOLED

CONTROL BOX

CONDENSER

EXPANSION

VALVE

RESERVOIR

ICE CHUTE

COMPRESSOR ICE LEVEL

SENSORS

DRAIN

TUBE

WATER COOLED

CONTROL BOX

CONDENSER

EXPANSION

VALVE

RESERVOIR

ICE CHUTE

ICE LEVEL

SENSORS

HIGH

PRESSURE

CUT OUT

FM1202

August 1993

Page 9

COMPONENT DESCRIPTION: Control Box

Contactor: A definite purpose contactor

connecting the compressor and the fan motor to

the power supply.

Circuit Board, "B" Model: The circuit board

receives input signals from several electronic

sensors and translates them to control the

electrical power supply to various loads.

The sensors include:

••Electric eye to check the ice level in the bin.

••A thermistor to check the water level in the

reservoir.

••Amp draw of the gear motor.

The loads include:

••Compressor contactor

••Fan motor

••Auger drive motor.

Transformer: "A" Models Only. Supplies low

voltage to the circuit board.

Low Pressure Cut Out Switch: A manual reset

control that shuts off the ice machine when the low

side pressure drops below a preset point, 0-4 psig.

Potential Relay: The compressor start relay.

On/Off Switch: Manual control for the machine.

ON/OFF SWITCH

LOW

PRESSURE

CUT OUT

SWITCH

POTENTIAL

RELAY

TRANSFORMER

CONTACTOR

CIRCUIT

BOARD

FM1202

August 1993

Page 10

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