Scotsman FME804, NME654 User Manual
INTRODUCTION
NME654 & FME804
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 is a modular ice system that fits a variety of
Scotsman ice storage bins.
Table of Contents
FOR THE INSTALLER ······································ Page 2
SAMPLE BIN AND MACHINE COMBINATIONS ························· 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
INITIAL START UP ········································ Page 9
COMPONENT DESCRIPTION ·································· Page 10
COMPONENT DESCRIPTION ·································· Page 11
Control Box Components ····································· Page 12
ELECTRICAL SEQUENCE: ··································· Page 13
OPERATION: Water ······································· Page 14
OPERATION: Refrigeration ···································· Page 15
OPERATION: Performance ···································· Page 16
CLEANING & SANITIZING ···································· Page 17
SENSOR MAINTENANCE ···································· Page 18
AIR COOLED MAINTENANCE ·································· Page 19
BEARING MAINTENANCE ···································· Page 20
AUGER MAINTENANCE ····································· Page 21
SERVICE DIAGNOSIS: ····································· Page 22
SERVICE DIAGNOSIS ······································ Page 23
CONTROL SYSTEM DIAGNOSTICS ······························ Page 24
REMOVAL AND REPLACEMENT: 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: Gear Reducer and Motor ·················· Page 30
REFRIGERATION SYSTEM SERVICE ····························· Page 31
What to Do Before Calling for Service ······························ Page 32
Its features include: front service for the freezer,
gearmotor, control box, water reservoir, and bin
control; an electronic control (AutoSentryä ) for
monitoring ice level, water level and drive motor
current; a thermostatic expansion valve; and
R-404A as the refrigerant.
January 2000
Page 1
Note this symbol when it appears.
NME654 & FME804
FOR THE INSTALLER
These machines fit the following Scotsman
products, check sales literature for other possible
combinations:
SB480 and extensions (with bin top KBT18)
·
HTB555 or BH550 using bin top KBT14 or
·
KBT20
BH800 using bin top KBT15 (one unit) or KBT25
·
(two units).
BH801 using bin top KBT28
·
BH900 using bin top KBT24
·
NME654 Dispenser Applications
The NME654 can be placed on and used with
certain ice and ice-beverage dispensers. Kits
are required for proper operation, see the
following list:
ID150, use adapter KBT42 and KNUGDIV
·
ID200 or ID250, use adapter KBT46 and
·
KDIL-N-ID2
Cornelius ED/DF200 beverage dispensers,
·
use KBT46 and KDIL-N-200
Installation Limitations:
This ice system is designed to be installed indoors,
in a controlled environment:
Min. Max.
Air Temperature 50
Water Temperature 40
Water Pressure 20 PSI 80 PSI
Voltage (for 115v model) 104 126
(Compared to the nameplate)
Operating the machine outside of the limitations is
misuse and can void the warranty.
0
F 1000F
0
F 1000F
·Cornelius ED/DF250 beverage dispensers,
use KBT46 and KDIL-N-250
·
Lancer nugget ice & beverage dispenser, use
KDIL-N-L and Lancer kit #82-3491.
SPECIFICATIONS: ICE MACHINE
Model
Number
FME804AS-1 A or B 27" x 21" x 24" 115/60/1 Flake Air 19.5 30 24 ounces
FME804WS-1 A same same same Water 18.3 30 20 ounces
FME804WS-1 B same same same Water 18.3 30 19 ounces
FME804AS-6 A or B same 230/50/1 same Air 10.1 15 24 ounces
FME804WS-6 A same same same Water 9.5 15 20 ounces
FME804WS-6 B same same same Water 9.5 15 19 ounces
NME654AS-1 A or B same 115/60/1 Nugget Air 19.5 30 24 ounces
NME654WS-1 A same same same Water 18.3 30 20 ounces
NME654WS-1 B same same same Water 18.3 30 19 ounces
NME654AS-6 A or B same 230/50/1 same Air 10.1 15 24 ounces
NME654WS-6 A same same same Water 9.5 15 20 ounces
NME654WS-6 B same same same Water 9.5 15 20 ounces
Model
Series
Dimensions Basic
Electrical
Ice
Type
Condenser
Type
Minimum
Circuit
Ampacity
Max.
Fuse
Size
Refrigerant
Charge:
R-404A
Note: Minimum Circuit Ampacity is used to determine wire size and type per national electric code.
January 2005
Page 2
NME654 & FME804
SAMPLE BIN AND MACHINE COMBINATIONS
The Nameplate is located on
the back of the machine.
A Serial Number Plate is
located inside the cabinet,
behind the front panel.
FME804 ON BH550*
NME654 ON BH800*
FME804 ON BH900*
*Bin Top Kit Required
January 2000
Page 3
NME654 & FME804
FOR THE INSTALLER
Location:
Install the machine be installed in a location where
it has enough space around it to be accessible for
service. A minimum of 6" must 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 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.
Note: When placing 2 of these machines on a
BH800 without the bin top, removal of the 2 service
panels facing each other will make future service
easier:
1. Remove the 2 top panel screws that will face
each other.
2. Remove the 2 service panels that will face each
other.
3. Add a strip of gasket, such as Scotsman part
number 19-0503-04, to the 2 base edges that will
face each other and around service panel space
on the 2 panels that will face each other.
When the 2 machines are placed on the bin, the
gaskets will seal the bin top area and the space
between the machines.
Water Limitations:
An ice machine is a food manufacturing plant: it
takes a raw material, water, and transforms it into a
food product, ice. The purity of the water is very
important in obtaining pure ice and in maximizing
product life. This section 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 is
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.
Note:
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.
May 2001
Page 4
FOR THE INSTALLER: Location
TWO UNITS ON ONE BIN
ALLOW ROOM
FOR AIR
CIRCULATION
AND SERVICE
ACCESS
NME654 & FME804
DO NOT STACK ANYTHING IN
FRONT OF THE MACHINE(S)
January 2000
Page 5
NME654 & FME804
FOR THE PLUMBER
CONFORM TO ALL APPLICABLE CODES
Water Inlet
Air Cooled Models: Use
connect cold potable water to the
fitting 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: Connect a separate
O.D. copper line, with a separate hand valve, to
3
" FPT condenser inlet at the back of the
the
8
cabinet. The water pressure to all lines must
always be above 20 PSIG, and below 80 PSIG.
3
" O.D. copper tubing to
8
3
" male flare
8
3
8
"
Drains
Air Cooled Models: Connect a drain tube to the
¾" FPT drain at the back of the cabinet, the drain
line is of the gravity type, and ¼ 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 ¾" rigid tubing.
Water Cooled Models: In addition to the above
mentioned drain, a separate condenser drain must
be installed. Connect it to the ½" condenser drain
connection at the back of the cabinet.
Storage Bin: Install a separate gravity type drain,
similar to the air cooled drain. Insulation of this
drain line is recommended.
WATER
COOLED
CONDENSER
HAND
VALVE
INLET
WATER
FILTER
CONDENSER
DRAIN
VENTED
DRAIN
HAND
VALVE
WATER
INLET
VENTED
AIR COOLED
MODELS
FIELD
SUPPLIED
FILTER
January 2000
Page 6
FOR THE ELECTRICIAN
CONFORM TO ALL APPLICABLE CODES
NME654 & FME804
Connect the electrical power to the machine to the
wires 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.
WATER
COOLED
The ice machine 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.
POWER
SUPPLY
AIR
COOLED
January 2000
Page 7
NME654 & FME804
FOR THE INSTALLER
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?
Final Check List
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?
January 2000
Page 8
INITIAL START UP
NME654 & FME804
Pre-Start Inspection
1. Remove the front and side service panels.
2. Check that any shipping blocks have been
removed.
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. There will be a
short delay before the gearmotor and 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.
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).
The air cooled discharge pressure will depend
·
upon air and water temperatures, but should be
between 220 PSIG and 300 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.
5. The unit should soon be making ice, if desired,
the low side pressure can be checked: it should be
34 PSIG + or - 4 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.
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 manufacturer’s registration and mail it
to Scotsman.
January 2000
Page 9
NME654 & FME804
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.
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 no water.
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.
Condenser: Air or water cooled, where the heat
removed in ice making is discharged.
Expansion valve: The refrigerant metering device.
AIR COOLED
CONTROL BOX
ICE CHUTE
CONDENSER
RESERVOIR
EXPANSION
VALVE
DRAIN
TUBE
COMPRESSOR
January 2000
Page 10
ICE LEVEL
SENSORS
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