Scotsman CME1202 Manual de usuario

INTRODUCTION

To the owner or user: This service manual 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.

Table of Contents

FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 2

BACK VIEW OF CABINET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 3

ERC401 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 4

FOR THE INSTALLER: Location & Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5

FOR THE INSTALLER: Location & Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . page 6

FOR THE INSTALLER: Scotsman Remote Condenser . . . . . . . . . . . . . . . . . . . . . . page 7

FOR THE INSTALLER: Coupling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . page 8

FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 9

FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 10

FINALCHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 11

INITIALSTARTUP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 12

FREEZING CYCLE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 14

HARVESTCYCLE - HOTGAS BYPASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 15

COMPONENTDESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 16

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 19

SYSTEM SPECIFICATIONS: CME1202 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 21

SYSTEM SPECIFICATIONS: CME1402 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 22

ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23

SERVICE DIAGNOSIS: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 24

SERVICE DIAGNOSIS: Electrical and/or Adjustments . . . . . . . . . . . . . . . . . . . . . . page 25

SERVICE DIAGNOSIS: Refrigeration and/or Mechanical . . . . . . . . . . . . . . . . . . . . . page 26

SERVICE DIAGNOSIS: Bin Ice Level Control . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27

REMOVALAND REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 28

REFRIGERATION SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31

LIQUID CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 32

Parts Lists and Wiring Diagrams are located in

the center of this manual, printed on yellow

paper.

This manual was printed on recycled paper.

Keep this manual for future reference.

Note this symbol when it appears in the

manual. It indicates a potential hazard.

CME1202R & CME1402R

January 1995

Page 1

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 C.U.L.

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.

FOR THE INSTALLER

These machines will fit the following Scotsman ice

storage bins:

••BH900

••BH1000 (with bin top KBT21)

••BH1360

and will stack onto the following ice machines:

••CME1402 or CME1202 (use KSCMS48)

••MCM1462 or CMS1402B or CMS1202B (with

stacking kit KSCMS48)

Aremote condenser and precharged tubing kit are

required to assemble this ice system.

The normal finish for the machine is enamel

sandalwood. An optional stainless steel panel kit

(SPKCMS48) can be field installed. It contains a

stainless steel top, left side panel, an overlay right

side panel, and front panels.

Model Number Dimensions

(without bin)

W" x D" x H"

Basic

Electrical Minimum

Circuit

Ampacity*

Maximum

Fuse

Size+

Refrigerant

Charge**

R-404A

Condenser

Type

CME1402RE-3A 48 x 243⁄8x 271⁄2208-230/60/3 15.5 20 336 oz. Remote Air

CME1402RE-32A 48 x 243⁄8x 271⁄2208-230/60/1 22.9 30 336 oz. Remote Air

CME1202RE-3A 48 x 243⁄8x 271⁄2208-230/60/3 14.4 20 336 oz. Remote Air

CME1202RE-32A 48 x 243⁄8x 271⁄2208-230/60/1 20.9 30 336 oz. Remote Air

CME1202RE-6A 48 x 243⁄8x 271⁄2230/50/1 336 oz. Remote Air

* Minimum Circuit Ampacity is used to determine wire size and type per the National Electric Code.

+ Or HACR type circuit breakers.

** The unit is shipped with the charge in the receiver and, beginning with May 1996 production, 112 oz in

the Scotsman ERC401 condenser. For re-charging purposes, see the table below.

Use Scotsman remote condenser RCE1401 or ERC401. Use precharged tubing kit RTE25 (25’) or RTE40

(40").

Note: This refrigeration system may NOT be connected to a condenser circuit that had been used

in a R-12, R-22 or R-502 system. Doing so will void the refrigeration system warranty.

This ice system (except remote condenser) is designed to be installed indoors, in a controlled environment.

MINIMUM MAXIMUM

Air Temperature 500F. 1000F.

Water Temperature 400F. 1000F.

Water Pressure 20 psi 80 psi

Voltage -5% +10%

Condenser Model Total System Charge

ERC401 448 oz

RCE1401 448 oz

MAC 7G 336 oz

Charging Table

CME1202R & CME1402R

June 1996

Page 2

BACK VIEW OF CABINET CME1202R & CME1402R

June 1996

Page 3

ERC401 SPECIFICATIONS

23 13⁄16"

19 7⁄8"

ERC Dimensions

ABFG

43 3⁄8"10

⁄

"21

⁄

"16

⁄

CME1202R & CME1402R

June 1996

Page 4

FOR THE INSTALLER: Location & Assembly

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. 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

packed with the BH900. If stacking use a heavy

duty leg kit (KLP6).

1. Arrange for proper electric, water and drain. See

instructions for the plumber and for the electrician.

2. After mounting the legs position the ice storage

bin in the selected location:

Note: Allow enough space to the left and back to

service the machine. Do NOT push the bin into

position, instead, lift it there. Pushing a bin may

damage the legs and leg mounts.

Level the bin in both the front to rear and side to

side directions by adjusting the leg levelers.

3. Inspect the bin top mounting gasket. It must be

flat, with no gaps, to provide a good water seal

when the cuber is installed on top of the bin.

Ice Maker:

Install the modular cuber on top of the bin using

care to be sure a good seal is made between the

two cabinets. Use of a mechanical lift is

recommended. Align the holes in the bottom rear

of the cabinet to mate with the two mounting holes

on the top rear of the bin.

Use bolts and straps found on the back of the ice

machine to secure the ice machine to the bin.

When alignment and leveling are completed,

tighten the bolts to secure the mounting straps.

Remove the front panel, and remove the

evaporator shipping brackets and hardware.

Remote Condenser:

A new condenser coil designed for the machine’s

capacity MUST be used. Because of the possibility

of mineral oil contamination, coils and line sets

that had been connected to R-12, R-502 or R-22

units MAY NOT BE CONNECTED TO THIS

SYSTEM. Doing so voids the refrigeration system

warranty.

SHIPPING

BRACKETS

ICE MACHINE AND BIN ASSEMBLY

CME1202R & CME1402R

June 1996

Page 5

FOR THE INSTALLER: Location & Assembly

Stacking Instructions

Astacking kit, KSCMS48, is required to

interconnect the ice level controls, seal the

freezing compartments, support the bin with heavy

duty legs, and retain the front panels.

Follow the installation instructions of the stacking

kit, but in general:

Replace the original bin legs with heavy duty legs

(KLP6).

When stacking two units, remove the top panel

and the evaporator cover from the lower ice maker.

(The top removed from the lower ice maker will no

longer have any function.)

Add a strip of gasket (from the stacking kit) to the

top edge of the bottom ice machines evaporator

compartment.

Install the panel retaining bracket onto the bottom

ice machine before placing the upper unit on it.

Place additional gasket onto the top edges of the

bottom ice machine.

Carefully lift the uncrated top unit onto the bottom

one and align the two cabinets. Use of a

mechanical lift is recommended for this step.

At the back of the two ice makers, bolt the upper

ice maker cabinet to the lower ice maker cabinet

using the mounting straps and bolts from the

hardware package.

Add the relay kit to interconnect the two ice

machine’s bin control circuits.

EVAPORATOR COVER

STACKING

STAINLESS STEEL PANEL

RETAINING BRACKET

CME1202R & CME1402R

June 1996

Page 6

FOR THE INSTALLER: Scotsman Remote Condenser

Locate the condenser as near as possible to the

interior location of the ice maker.

Location of the condenser is limited by the specific

length of precharged refrigerant tubing supplied for

the application. The pre-charged tubing connects

the ice maker to the remote condenser. The

condenser must be above the ice maker.

Select the best available location, protecting the

condenser from extremes of dirt, dust, and sun.

Meet all applicable building codes.

Roof Attachment:

Install and attach the remote condenser unit to the

roof of the building, using the methods and

practices of construction that conform to the local

building codes, including having a roofing

contractor secure the condenser to the roof.

Precharged Line Routing

CAUTION

Do not connect precharged tubing until all routing

and forming of the tubing is complete. See the

coupling instructions for connecting instructions.

1. Each set of precharged refrigerant lines consists

of a 3/8 inch diameter liquid line, and a 1/2 inch

diameter discharge line. Both ends of each line

have quick connect couplings, the end without

access valves goes to the ice maker.

Note: The openings in the building ceiling or wall,

listed in the next step, are the minimum sizes

recommended for passing the refrigerant lines

through.

REFRIGERANT

CONNECTIONS

TYPICAL

INSTALLATION

LOCATE CONDENSER

NO LOWER THAN ICE

MACHINE

2. Have the roofing contractor cut a minimum hole

for the refrigerant lines of 1.75". Check local

codes, a separate hole may be required for the

electrical power to the condenser.

CAUTION

DO NOT KINK OR CRIMP REFRIGERANT

TUBING WHEN INSTALLING IT.

3. Route the refrigerant lines through the roof

opening.

Follow straight line routing whenever possible.

Any excess tubing MUST be retained within the

building.

4. Spiral any excess length of pre charged tubing

inside the building. Use a horizontal spiral to

avoid any traps in the lines.

Note: Spiral need not be as

tight as illustrated.

5. Have the roofing contractor

seal the holes in the roof per

local codes.

CME1202R & CME1402R

June 1996

Page 7

FOR THE INSTALLER: Coupling Instructions

CAUTION

The couplings on the sets of precharged lines are

self sealing when installed properly. Carefully

follow the instructions:

Initial Connections:

1. Remove the protector caps and plugs. Wipe the

seats and threaded surfaces with a clean cloth to

be certain that no foreign matter remains on them.

2. Lubricate the inside of the couplings, especially

the O-Rings with refrigerant oil.

••The 1/2 inch discharge line (schrader valve

end) goes to the remote condenser fitting

marked “discharge line”.

••The 3/8 inch liquid line (schrader valve end)

goes to the remote condenser fitting marked

“liquid line”.

••The 1/2 inch discharge line goes to the ice

maker fitting marked “discharge line”.

••The 3/8 inch liquid line goes to the ice maker

fitting marked “liquid line.”

Final Connections:

3. Begin tightening the couplings together by

hand, then using two wrenches (it is important that

ONLY the nut on the precharged lines be turned,

the other parts of the couplings must NOT be

allowed to turn or the process will tear out the

diaphragms and they will be loose in the

refrigeration system) tighten the coupling until it

bottoms out or a definite increase in resistance is

felt.

4. Using a marker or pen, mark a line lengthwise

from the coupling union nut to the bulkhead. Then

tighten the coupling and additional 1/4 turn. As the

nut turns, the line will show when 1/4 turn is made.

5. After all connections are made, and after the

king valve has been opened, check the couplings

for leaks.

SCHRADER

VALVES

LIQUID LINEDISCHARGE LINE

INSULATION

TIGHTENING THE QUICK CONNECTS

CME1202R & CME1402R

June 1996

Page 8

FOR THE ELECTRICIAN

See the ice machine nameplate for current

requirements to determine wire and fuse size to be

used for electrical hookup. When the cuber and

the remote condenser are connected, each must

be grounded to the other using the ground screws

provided in the respective junction boxes. The

cuber then requires a solid chassis to chassis

earth ground wire. See Wiring Diagram.

Be certain the cuber is connected to its own

electrical circuit and individually fused. Voltage

variation should not exceed ten percent of the

nameplate rating, even under starting conditions.

Low voltages can cause erratic operation and may

be responsible for serious damage to the ice

maker.

FOLLOW ALL APPLICABLE CODES

The Scotsman remote condenser is designed to

be powered from the ice machine. There is a

separate electrical junction box at the back of the

ice maker for the remote condenser. Wire the

remote condenser to the ice maker in accordance

with local and national electric codes. All outdoor

wiring must be in rain proof conduit.

Note: If connecting to another ULlisted remote

condenser, follow the instuctions provided with that

product for electrical connections.

The condenser fan motor will run whenever the

compressor is running.

Electrical connections are made at the rear of the

ice maker, inside the junction box.

All external wiring should conform to the national,

state and local electrical code requirements.

Usually an electrical permit and services of a

licensed electrician will be required.

INTERCONNECTING

WIRES

DETAIL OF JUNCTION BOX, 3 PHASE SHOWN

ELECTRICAL CONNECTIONS

HAND

DISCONNECT

SWITCH

REMOTE CONNECTION

POWER

SUPPLY

GROUND

SCREW

CME1202R & CME1402R

June 1996

Page 9

FOR THE PLUMBER

The recommended water supply line is a 3/8-inch

O.D. copper tubing with a minimum operating

pressure of 20 PSIG and a maximum of 80 PSIG.

Connect to cold water supply line with standard

plumbing fittings, with shut off valve installed in an

accessible place between the water supply and

the cuber. In some cases a plumber will be

required.

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. It is generally better to filter the water,

although there is no one filter that will cure all

water problems. Agood filter combined with a

polyphosphate feeder gives about the best overall

performance.

DRAIN

Connections: All drains are gravity type and must

have a minimum of 1/4-inch fall per foot on

horizontal runs. The drains to be installed to

conform with the local plumbing code. Install a

vertical open vent on drain line high point to insure

good draining. The ideal drain receptacle is a

trapped and vented floor drain. Recommended bin

drain is 3/4 inch O.D. RIGID tubing and should be

vented and run separately. Insulation for high

humidity areas is recommended.

The ice machine sump drain is 3/4" FPT. There

must be a vent at this connection for proper sump

draining. Recommended drain is 3/4 inch O.D.

RIGID tubing and should be run separately.

Insulation for high humidity areas is

recommended.

WATER SUPPLY AND DRAIN CONNECTION

AIR GAP BETWEEN

DRAIN LINES AND

BUILDING DRAIN

BIN

DRAIN

VENT

3/8" MALE FLARE

SUMP DRAIN MUST

BE VENTED

OPTIONAL

FILTER

POTABLE

WATER

SUPPLY

HAND

SHUT OFF

VALVE

3/4" FPT

CME1202R & CME1402R

June 1996

Page 10

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