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Scotsman Ice
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NME454
User Manual
32 pgs1.22 Mb0
User Manual 2
16 pgs706.29 Kb0

Scotsman Ice NME454 User Manual

INTRODUCTION
NME454, 654 & FME504, 804
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
January 2007
Page 1
Note this symbol when it appears.
NME454, 654 & FME504, 804
FOR THE INSTALLER
These machines fit the following Scotsman products, check sales literature for other possible combinations:
SB480 and extensions (with bin top KBT18)
·
B530 using bin top KBT14 or KBT20
·
B842 using bin top KBT28
·
B948 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
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.
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
SPECIFICATIONS: ICE MACHINE
Model
Number
FME504AS-1 A 27" x 21" x 24" 115/60/1 Flake Air 15.75 20 22 ounces
FME504WS-1 A same same Flake Water 14.35 20 18 ounces
FME804AS-1 A or B same same 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
FME804AS-32 B same 208-230/60/1 Flake Air 10.2 15 20 ounces
FME804WS-32 B same same Flake Water 10.2 15 19 ounces
NME454AS-1 A same 115/60/1 Nugget Air 15.75 20 22 ounces
NME454WS-1 A same 115/60/1 same Water 14.35 20 18 ounces
NME654AS-1 A or B same same same 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.
April 2008
Page 2
NME454, 654 & FME504, 804
SAMPLE BIN AND MACHINE COMBINATIONS
FME804 ON BH550*
NME654 ON BH801*
The Nameplate is located on
the back of the machine.
A Serial Number Plate is
located inside the cabinet,
behind the front panel.
*Bin Top Kit Required
January 2007
Page 3
NME454, 654 & FME504, 804
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 and sides 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 BH801 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.
January 2007
Page 4
FOR THE INSTALLER: Location
TWO UNITS ON ONE BIN
ALLOW ROOM
FOR AIR CIRCULATION AND SERVICE
ACCESS
NME454, 654 & FME504, 804
ALLOW AIR SPACE ON BOTH
SIDES
March 2006
Page 5
Airflow Notice:
Airflow changed in 2006. Prior model's air flow was in the front
and out the back. Current model's (shown) air flow is in
the sides and out the back.
NME454, 654 & FME504, 804
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
the
" FPT condenser inlet at the back of 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 2007
Page 6
FOR THE ELECTRICIAN
CONFORM TO ALL APPLICABLE CODES
NME454, 654 & FME504, 804
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 2007
Page 7
NME454, 654 & FME504, 804
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?
January 2007
Page 8
INITIAL START UP
NME454, 654 & FME504, 804
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
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.
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.
January 2007
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.
Page 9
NME454, 654 & FME504, 804
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
RESERVOIR
EXPANSION
CONDENSER
VALVE
DRAIN
TUBE
ICE CHUTE
COMPRESSOR
January 2007
ICE LEVEL
SENSORS
Page 10
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