Scotsman FME1202R User Manual

INTRODUCTION

NME950R & FME1202R

To the owner or user: The service manual you are
reading is intend ed to provide you, an d the
maintenance or service technician, with the
information needed to install, start up, clean,
maintain, and service this ice system.

The ice machines covered in this manual are a
remote condenser type modular ice system that
fits a variety of Scotsman storage bins. They
feature: front service for the freezer, gear motor,
control box, water reservoir, and bin control; an
electronic circuit for monitoring ice and water level;
a thermostatic expansion valve; and R-404A as
the refrigerant.

TABLE OF CONTENTS

FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2

REMOTE CONDENSER SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3

FOR THE INSTALLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4

FOR THE INSTALLER: Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5

FOR THE INSTALLER: Precharged Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6

FOR THE INSTALLER: Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7

FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8

FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9

FOR THE ELECTRICIAN: Fan Relay Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10

FOR THE ELECTRICIAN: Fan Relay Kit Phasing (Do After Start Up) . . . . . . . . . . . . . Page 11

FOR THE INSTALLER: Completed Installation . . . . . . . . . . . . . . . . . . . . . . . . . Page 12

FOR THE INSTALLER: Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13

START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14

COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15

COMPONENT DESCRIPTION: Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . P age 16

ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17

OPERATION: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18

OPERATION: Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 19

MAINTENANCE AND CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21

SERVICE DIAGNOSIS: Condition - No Ice Being Produced . . . . . . . . . . . . . . . . . . Page 24

SERVICE DIAGNOSIS: Condition - Low Ice Production . . . . . . . . . . . . . . . . . . . . Page 27

REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls . . . . . . . . . . . . . . Page 28

REMOVAL AND REPLACEMENT: Bearing And Breaker . . . . . . . . . . . . . . . . . . . Page 29

REMOVAL AND REPLACEMENT: Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 30

REMOVAL AND REPLACEMENT: Water Seal . . . . . . . . . . . . . . . . . . . . . . . . . Page 31

REFRIGERATION SYSTEM SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 32

REMOVAL AND REPLACEMENT: Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . Page 33

REMOVAL AND REPLACEMENT: Gear motor Assembly . . . . . . . . . . . . . . . . . . . Page 34

CIRCUIT BOARD TESTI N G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P ag e 35

Parts Lists and Wiring Diagrams are located in the center of this manual, printed on
yellow paper.

February 1995

Page 1

This Manual Was Printed On

Recycled Pa per

Remote Condenser

Junction Box

Electrical

Inlet

Water Inlet

3/8" Flare

2.96"

Refrigeran t Cha rge*

208 ounces of R-404A
* Always go by the namep lat e
charge.

NME950R & FME1200R

FOR THE INSTALLER

Either the FME1200R or the NME950R is
designed to fit the followin g Scots man stora ge bins :

••B90 and extensio ns , with bin top KBT18.

••BH800 using bin top KBT15 (one unit).

••BH800 if using two units, no bin top needed.

•• BH900 usi ng bin top KBT2 4 (o ne unit )

••BH900 with bin top KBT25 (two unit s side by

side

••BH550 or HTB500 using bin top KBT14.

When installin g a new system, chec k to be sure
that you have everything you need before
beginning:

••Correct Bin

•• Correct Ice Machine

••Correct Bin Top

•• All kits, legs, and information required for th e

specific job.

Back View

Allow 6" above

machine for service.

Liquid Line
Connectio n

Discharge Line

Connection

SPECIFICATIONS: ICE MAKER

Model Number

FME1200RE-32A

FME1200RE-3A

NME950RE-32A

NME950RE-3A

Dimensions

(w/o bi n)

H X W X D

27" x 21" x 24"

same
same
same

20.84"

Basic

Electrical

208-230/60/1
208-230/60/3
208-230/60/1
208-230/60/3

Drain

3/4" FPT

Ice Type

FLAKE

same

Nugget

same

Cond.

Type

R/Air
R/Air
R/Air
R/Air

3"

5.25"

The Standard Finish is Ename l - Gray. There is an optional stainless stee l panel kit , SP KFM2 1 availab le to
convert the unit to Stainless Steel. It is field insta lled.

December 1995

Page 2

19 7⁄8"

ERC DIMENSIONS

A B F G

33 3⁄8" 10 3⁄4" 16 3⁄4" 11 5⁄8"

NME950R & FME1200R

REMOTE CONDENSER SPECIFICATIONS

Model Use with Basic Electrical
RCE501-32 1 FME1200R OR 1 NME950R 208-230/60/ 1
ERC151-32 SAME SAME
RCE502-32 1 or 2 FME1200Rs or NME950Rs SAME
ERC302-32 SAME SAME

23 13⁄16"

Other Required Items:

RTE25 Precharged line set, 25’, R-40 4A or
RTE40. Precharged line set, 40’, R-404A.
KCMR230. Fan Relay Kit used when two 230 volt (-32) ice mak ers are on one 230 volt (-32) t wo circu it

condenser.

ICE MAKER NAMEPLAT E

LOCATED ON BACK PANEL

SERIAL PLATE LOCATED

BEHIND FRONT PANEL

December 1995

Page 3

NME950R & FME1200R

FOR THE INSTALLER

Installation Limitations:

This ice system is designed to be installed indoors,
in a controlled environ men t:

Min Max
Air Temperatu re 50
(Not including the remote condenser)
Water Temperature 40
Water Pressure 20 PSIG 80 PSIG
Voltage -5% +10%
(Compared to the nameplate)

Operating the mac hine outsid e of the limit ation s is
misuse and can void the warran ty .

Scotsman Ice Systems are designed and
manufactured with the highest regard for safety
and performan ce . They mee t or excee d the
standards of UL, NSF, and CUL.

Scotsman assu mes no liability or res po nsib ility of
any kind for pro ducts manufact ure d by Sc ot sman
that have been alte red in any way , inclu din g th e
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.

0

F100

0

F100

0

0

Afte r u ncrat ing and in spe c tion, the unit i s re ady for
installat ion . It is important that the machin e be
installed in a location where it has enough space

F

F

around it to be accessible for service, usually a
minimum of 6 inches. Try to avoid hot, dirt y and
crowded loca tio ns. Be sure that the loca tio n fo r the
machine is within the limitations described on page

3.

Tip the storage bin on it s bac k, us ing part s of th e
carton to protect the exterior finish . In st all the leg s
into the thr eaded holes in t he bottom o f the bin .
Turn the leg levele rs all the way in pre pa rat ion for
leveling lat er. Return th e bin to the uprigh t positio n,
remove paper cov erin g th e bin gask et .

Install the bin top acco rdin g to the direction s with
the bin t op .

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.

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 th e machin e to the bin with the
hardware provided with the machine.

Remove the front panel and remove any shipping
blocks.

Note: Be sure to allow a 6" minimum space above
the top of the machine for serv ice.

Location

Storage Bin

Ice Maker

December 1995

Page 4

REMOTE CONDENSER

NME950R & FME1200R

FOR THE INSTALLER: Remote Condenser

Location

Limited to a 40 foot or a 25 foot length of
precharg ed refrig era nt tubing connec ting the ice
maker to the remote condenser. The condenser
must be above or level with the ice make r.

Select the best av ailable locat ion , pro te ct ing the
condenser from ext reme s of dirt , dust , and sun.

Meet all applicable building codes. Usually the
services of a licensed elect rician are req uire d.

Roof Attachment

1. Install and attach the remo te conde nser to the
roof of the build ing , us ing the meth ods and
practices of const ruct ion that co nf orm to the local
building codes, including havin g a roofing
contractor se cure the condense r to the roo f.

2. Have an electrician connect the remot e
condenser fan mot or to the ic e maker, us ing the
junction box at the bac k of th e ice ma ker.

PRECHARGED LINE ROUTING

CAUTION

Do not connect precha rge d tubin g until all rou tin g
and forming of the tubing is comp let e. See the
coupling instru ct ion s, pa ge for connect ing
instructio ns .

4. Spiral the excess length of pre charge d tubing
inside the building. Use a horizontal spiral (as
illustrated) to avoid any traps in the lines.

5. Have the roo fing contr a c t o r seal the holes in
the roof per local codes.

Note: Precharged tubing contains a R-404A
holding charg e. The entire refrig erant charge
required for the syst em is conta ine d in the ice
machine.

Tubing illustrat ion shows tigh t spira l; a spiral in the
field depends on tub ing limit ation s. Tigh t sp iral not
required.

Traps in tubin g not req uire d, they are inc lud ed as
part of the Scotsman co nden ser and ice machin e.

1. Each set of precharg ed refrig era nt lines (eit her
25 foot or 40 foot) consis ts of a 3/8 inch diamete r
liquid line and a 1/2 inch diameter discharge line.
Both ends of each line have quick connect
couplings, on e end has a sch rad er valv e
connection, that end goes to the condenser.

Note: The openings in the buildin g ceilin g or wall,
listed in the next step, are the minimum sizes
recommended for passin g the ref rige ran t line s
through .

2. Have the roofing contra ct or cut a minimum hole
for the refrigera nt lines of 1 3/4 inch. Check loca l
codes, a separat e hole may be requ ired for the
electrical power to the condenser.

CAUTION

DO NOT KINK OR CRIMP REFRIGERANT
TUBING WHEN INSTALLI NG 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.

SPIRAL

EXCESS

TUBING

INSIDE

BUILDING

LOCATE REMOTE

CONDENSER

ABOVE ICE MAKER

December 1995

Page 5

NME950R & FME1200R

FOR THE INSTALLER: Precharged Lines

COUPLING INSTRUCTIONS

CAUTION

The couplin gs on the set s of pre ch arg ed lines are
self sealing when inst alle d pro perly. Caref ully
follow the instructio ns :

Initial Connections:

1. Remove the protector caps and plugs. Wipe the
seats and threaded surfaces with a clean cloth to
be certain that no fore ign ma tt er rema ins on the m.

2. Lubricate the inside of the couplings, especia lly
the O-Rings with refrige ran t oil.

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

end) goes to the remote con dense r fitt ing
marked "discharge line".

••The 3/8 inch liquid line (sch rad er valv e end)

goes to the remote conde nser f itt ing marke d
"liquid line".

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

maker fittin g marked "discharge line".

••The 3/8 inch liquid line go es to the ice make r

fitting marked "liquid line".

Final Connections:

3. Begin tighte ning the coupling s t oget he r by
hand, then using two wrenches (it is important that
ONLY the nut on the prec harge d line s be turned,
the other parts of the coup ling s must NO T be
allowed to turn or the proce ss 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 addition al 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 open ed, ch eck the coup ling s
for leaks.

SERVICE PORTS

REMOTE CONDENSER

3/8" LIQUID LINE

SCHRADER

VALVE

TO REMOTE

CONDENSER

1/2" DISCHARGE

LINE

NO SCHRADER

VALVE

TO ICE MAKER

December 1995

Page 6

FOR THE INSTALLER: Location

SERVICE

ACCESS

ROOF

CUTAWAY

WALL

CUTAWAY

TWO UNITS ON ONE
CONDENSER

EXCESS

PRECHARGED

TUBING INSID E

BUILDING

NME950R & FME1200R

REMOTE

CONDENSER

ICE MAKERS

SERVICE ACCESS

SIDE AND BACK

December 1995

Page 7

NME950R & FME1200R

FOR THE PLUMBER

CONFORM TO ALL APPLICABLE CODES

Water Inlet

SUPPLIED

WATER FILTE R

HAND SHUT

OFF VALVE

CONNECT TO

COLD WATER

FIELD

WATER INLET

3/8" MALE

FLARE

VENT ICE

MAKER

DRAIN,

3/4" FPT

The recommen ded wat er su pply is
cold water. Use 3/8" O.D. copper
tubing, connect to the 3/8" male flare
at the back of the cabin et . Install a
hand valve near the mach ine to
control the water su pply.

Drains

The cabine t has a 3/4" FPT dra in.
connection. The drain is 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 .

Storage Bin: A separate gravity type

drain needs to be run. In su lat ion of
this drain line is recomme nd ed.

VENT BIN DRAIN

3/4" FPT

FLOOR DRAIN

December 1995

Page 8

FOR THE ELECTRICIAN

RAIN PROOF

CONDUIT

CONFORM TO ALL APPLICABLE CODES

NME950R & FME1200R

The electrical powe r to the unit is sup plie d throu gh
the junct ion box at the re ar of the machine.

Check the nameplate (loc ated on the back panel)
for the voltage req uire men ts, and for the minimum
circuit ampac ity. The machine requ ires a solid
chassis to earth ground wire.

The ice maker sho uld be connect ed to its own
electrical circuit so it would be individually fused.
Voltage variation must remain within design
limitations , even under starting conditions.

TERMINAL STRIP

FOR REMOTE

CONDENSER

ICE MAKER

JUNCTION BOX

Electrically the remot e condens er fan mot or is
connected to the ice maker at the conta cto r
terminals for the compressor and the fan motor
operates whe ne ver th e compre ssor operates.

Electrical conn ect ion s are made at the junction
box at the back of the ice maker and at the
junction box on the remote condenser.

The remote condenser mus t be wired to the ice
maker in accord an ce with loca l a nd nat ion al
electrical codes with a minimum of 18 Awg. wire
with an ground bonding wire connecte d to the
ground screws pro vided in both the condense r and
machine field wiring boxes. All outdoor wiring
must be in rain proof conduit.

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.

GROUND

THE

CHASSIS

POWER

SUPPLY

December 1995

Page 9

NME950R & FME1200R

FOR THE ELECTRICIAN: Fan Relay Kit

WARNING

Do all wiring with the electrical power
disconnected.

To install the KCMR23 0 fan rela y kit whe n using
(2) 230 VOLT ice makers and one 230 volt, two
circuit remote condense r.

See the remote condenser nameplate for
current requireme nts to determine wire size
to be used for electrical hookup. Refer to
wiring diagram.

All external wiring should conform to the natio nal,
state and local elec trica l cod es. Usually an
electrical permit and services of a licensed
electrician will be required.

1. Mount the control box in a convenient location.

2. Attach a solid earth ground wire to the gro und
screw.

3. Route connecting wires from the first ice maker
junction box

(marked condenser fan) and connect it to the
KCMR230 terminal st rip marke d: NO. 1 ICE
MACHINE.

4. Route connecting wires from the sec ond
machine jun ctio n box

(marked condenser fan) and connect it to the
KCMR230 terminal st rip marke d: NO. 2 ICE
MACHINE.

5. Route connecting wires from KCMR230
terminal strip marked: TO REMOTE FAN and
connect at the remo te conde nse r junc tio n box.

6. Check phasing of the electrical circuit as follows:
A. The phasing of the wiring MUST now be

checked, as incorre ct ph asing will result in a failure
of the kit relay.

POSSIBL E LOCAT I ON

FOR KCMR230

CONTROL BOX

December 1995

Page 10

NME950R & FME1200R

FOR THE ELECTRICIAN: Fan Relay Kit Phasing (Do After Start Up)

Below is an illustration of the KCMR23 0 termina l
strip. Note that each termin al is marke d:
1-2-3-4-5-6 . For prop er ph as ing :

Terminals #1 and #3 must be connected to the
same side of the line (such as L1)

Terminals #2 and #4 must be connected to the
same side of the line (such as L2).

B. Make a test with a volt meter as follo ws:

1. Switch on ice maker #1 first, then switch on ice
maker #2.

(The compress ors mus t be operating for this test.
Do this after start up.)

2. Test with a volt meter between terminals #2
and #4, then between terminals #1 and #3.
Compare the readings obtained to the ones in the
following list:

C. Test terminals 1-2 = Full Volta ge (208-23 0)

Test terminals 1-3 = No voltage
Test terminals 2-3 = Full Voltage
Test terminals 2-4 = No voltage
Test terminals 3-4 = Full voltage
Test terminals 1-4 = Full voltage
D. If there is full voltag e whe re there should be no

voltage, turn of f ice mak er #2, (bo th switch es)
Then turn off ice maker #1 (both swit ches). The
connections at the KCMR230 termina l strip
marked ice maker #1 must be reverse d (pu t the
wire that was on 1 on 2 and the wire that was on 2
on 1).

WARNING

Do all wiring with the electrical power
disconnected.

December 1995

Page 11