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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 either ice system.
FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2
REMOTE CONDENSER SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · Page 3
FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 4
Remote Condenser Location · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 5
FOR THE INSTALLER: Remote Condenser · · · · · · · · · · · · · · · · · · · · · · · · · Page 6
FOR THE INSTALLER: Precharged Lines · · · · · · · · · · · · · · · · · · · · · · · · · · Page 7
FOR THE INSTALLER: Location · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 8
FOR THE PLUMBER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 9
FOR THE ELECTRICIAN
FOR THE INSTALLER: Completed Installation · · · · · · · · · · · · · · · · · · · · · · · Page 11
FOR THE INSTALLER: Final Check List · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 12
START UP · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 13
COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 14
OPERATION: Water · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 15
COMPONENT DESCRIPTION: Control Box · · · · · · · · · · · · · · · · · · · · · · · · · Page 16
ELECTRICAL SEQUENCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 17
SYSTEM INFORMATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 18
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 19
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 20
CLEANING and SANITATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 21
SENSOR MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 22
BEARING MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 23
AUGER MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 24
SERVICE DIAGNOSIS: Condition · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 25
SERVICE DIAGNOSIS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 26
CONTROL SYSTEM DIAGNOSTICS · · · · · · · · · · · · · · · · · · · · · · · · · · · · 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
REMOVAL AND REPLACEMENT: Evaporator · · · · · · · · · · · · · · · · · · · · · · · Page 32
REMOVAL AND REPLACEMENT: Gear motor Assembly · · · · · · · · · · · · · · · · · · Page 33
REFRIGERATION SYSTEM SERVICE · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 34
What to Do Before Calling for Service · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 35
The manual was printed on recycled paper. Keep it
for future reference.
Note the Warning symbol where it appears. It
marks a possible hazard.
Table of Contents
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 10
January 2000
Page 1
NME1854R & FME2404R
The product is a remote condenser modular ice
system. Its features include: front service for the
freezer, gear motor, control box, water reservoir,
and bin control; an electronic circuit for monitoring
ice and water level; and R-404A as the refrigerant.
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Table of Contents
Related Manuals for Scotsman NME1854R
Summary of Contents for Scotsman NME1854R
- Page 1 NME1854R & FME2404R INTRODUCTION To the owner or user: The service manual you are The product is a remote condenser modular ice reading is intended to provide you, and the system. Its features include: front service for the maintenance or service technician, with the...
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Page 2: For The Installer
NME1854R & FME2404R FOR THE INSTALLER These machines are designed to fit TOP VIEW the following Scotsman storage Allow 6" of space behind the machine bins: for utility connections. · B90 and extensions, with bin top KBT18. · BH800 no bin top needed. -
Page 3: Remote Condenser Specifications
NME1854R & FME2404R REMOTE CONDENSER SPECIFICATIONS Model Use with Basic Electrical ERC302-32 1 FME2404R or NME1854R 208-230/60/1 ERC DIMENSIONS Model ERC302 " " " " " Other Required Items: RTE25 Precharged line set, 25’, R-404A - 2 required. Or: RTE40. Precharged line set, 40’, R-404A - 2 required. - Page 4 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.
- Page 5 NME1854R & FME2404R Remote Condenser Location Use the following for planning the placement of Configurations that do NOT meet these the condenser relative to the ice machine requirements must receive prior written authorization from Scotsman. Location Limits - condenser location must not...
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Page 6: For The Installer: Remote Condenser
NME1854R & FME2404R FOR THE INSTALLER: Remote Condenser Location Note: Precharged tubing contains a R-404A Select the best available location, protecting the holding charge. The entire refrigerant charge condenser from extremes of dirt, dust, and sun. required for the system is contained in the ice Meet all applicable building codes. -
Page 7: For The Installer: Precharged Lines
NME1854R & FME2404R FOR THE INSTALLER: Precharged Lines Note: The couplings on the sets of precharged 4b. Using two wrenches, one to rotate the swivel lines must be installed properly to prevent leaking. nut and one to hold the tubing, tighten each Carefully follow the instructions: coupling. -
Page 8: For The Installer: Location
NME1854R & FME2404R FOR THE INSTALLER: Location REMOTE CONDENSER ROOF CUTAWAY CONTACT ROOFING CONTRACTOR EXCESS PRECHARGED TUBING INSIDE SERVICE BUILDING ACCESS ICE MACHINE SERVICE ACCESS SIDE AND BACK WALL CUTAWAY January 2000 Page 8... - Page 9 NME1854R & FME2404R FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet Connect the ice machine to cold WATER INLET potable water. Use 3/8" O.D. copper 3/8" MALE tubing, and connect to the 3/8" male FLARE flare at the back of the cabinet. Install a hand valve near the machine to control the water supply.
- Page 10 NME1854R & FME2404R FOR THE ELECTRICIAN CONFORM TO ALL APPLICABLE CODES Connect electrical power to the wires in the Electrical connections are made at the junction junction box at the rear of the machine. box at the back of the Ice Machine and at the junction box on the remote condenser.
- Page 11 NME1854R & FME2404R FOR THE INSTALLER: Completed Installation A typical installation should generally appear as illustrated below. The remote condenser must be located above the Ice Machine and the precharged lines installed per the instructions on page 6. INSULATED PRECHARGED...
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Page 12: For The Installer: Final Check List
NME1854R & FME2404R 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... - Page 13 NME1854R & FME2404R START UP Pre-Start Inspection 1. Remove the front, left, and right 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 are rubbing each other.
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Page 14: Component Description
NME1854R & FME2404R COMPONENT DESCRIPTION Control Box: Contains the electrical controls that Ice Discharge Chute: Directs the ice produced by operate the machine. the evaporator into the storage bin. High Pressure Cut Out: An automatic reset Ice Level Sensor: An electronic “eye”, it senses switch sensing the high side refrigeration pressure. -
Page 15: Operation: Water
NME1854R & FME2404R OPERATION: Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, divides into two inlet lines to each water reservoir which it enters through the float valve. The water them goes out the bottom of the reservoir tanks to the bottom of the evaporators. -
Page 16: Component Description: Control Box
NME1854R & FME2404R COMPONENT DESCRIPTION: Control Box There are two control boxes in the machine. Contactor: A definite purpose contactor connecting the compressor and the remote condenser fan motor to the power supply. Circuit Board: Controlling the ice machine through sensors and relays. The sensors are for ice level and water level. -
Page 17: Electrical Sequence
NME1854R & FME2404R ELECTRICAL SEQUENCE There are 7 indicator lights on the control board: Shut Down: · · WTR-OK (Water OK). Green. Normal = The compressor relay opens, LED1 goes out. Glowing. Glows when there is water in the ·... -
Page 18: System Information
NME1854R & FME2404R SYSTEM INFORMATION Information @ 90 F. air and 70 F. Water: Typical Suction Pressure 35 PSIG · Typical Discharge Pressure 260 PSIG · Minimum Discharge pressure (low temps) 180 PSIG · Typical Compressor Amps Single Phase = 4.3 ·... - Page 19 NME1854R & FME2404R OPERATION: Refrigeration There are two separate refrigeration systems in this machine. At the compressor, refrigerant is compressed into or evaporate. As it evaporates, it absorbs heat a high temperature gas. The discharge line directs from the evaporator and whatever is in contact with this gas to the condenser.
- Page 20 NME1854R & FME2404R OPERATION: Refrigeration There are two separate refrigeration systems in this machine. Low Condensing Temperature The refrigeration system under low condenser air temperatures is much the same as it is under higher temperatures, with the exception that the...
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Page 21: Cleaning And Sanitation
These units consist of two separate Ice Machines; to properly clean and maintain the them, these steps must be followed for both systems. A Scotsman Ice System represents a sizable investment of time and money in any company’s business. In order to receive the best return for that investment, it MUST receive periodic maintenance. -
Page 22: Sensor Maintenance
NME1854R & FME2404R SENSOR MAINTENANCE These units consist of two separate Ice Machines; to properly clean and maintain the them, these steps must be followed for both systems. 1. The bin control uses devices that sense light, 2. The ice machine senses water level by a probe therefore they must be kept clean enough so that located in the water reservoir. -
Page 23: Bearing Maintenance
If the bearing only needs grease, inject grease into Ice Sweep the bearing using Scotsman grease needle pn 02-3559-01 and Scotsman bearing grease cartridge, pn A36808-001. Be sure to inject grease evenly and thoroughly. See Removal and Replacement section to replace bearing or seals. -
Page 24: Auger Maintenance
NME1854R & FME2404R AUGER MAINTENANCE In some areas the water supply to the Ice Machine 6. Pull up to remove auger. will have a great deal of minerals in it, and that will After the auger has been removed, allow the auger result in an evaporator and auger becoming to dry;... - Page 25 NME1854R & FME2404R SERVICE DIAGNOSIS: Condition Symptom Possible Cause Probable Correction No ice is made, nothing operates Unit off due to no power. Restore power Unit off due to master switch in Off Move master switch to ON position Unit off due to low water level in...
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Page 26: Service Diagnosis
Clean out bin drain Poor fit between bin door and door Adjust or replace frame Machine makes too much noise Evaporator coated internally with Clean with Scotsman Ice Machine minerals Cleaner Motor bearings dry Oil or replace motor January 2000... -
Page 27: Control System Diagnostics
If it is on, the ice sensors may be blocked. Remove them and check for mineral scale. Scotsman's test box can also be used to determine if the ice sensors or board are defective. -
Page 28: Removal And Replacement: Water Reservoir & Bin Controls
NME1854R & FME2404R REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls WATER RESERVOIR 1. Shut off the water supply to the Ice Machine. 2. Remove front panel and reservoir cover. 3. Disconnect water inlet tube from reservoir inlet fitting. 4. To remove float valve, push in “locking tabs” as shown and pull float up. -
Page 29: Removal And Replacement: Bearing And Breaker
3. Unscrew and remove ice sweep. materials are required to install properly. 4. Lift up and remove ice chute. a. Add food grade grease such as Scotsman part 5. The breaker may be removed from the auger number 19-0569-01 to the seal area before and evaporator without disturbing the auger. -
Page 30: Removal And Replacement: Auger
NME1854R & FME2404R REMOVAL AND REPLACEMENT: Auger Note that the auger has very sharp edges. Inspect the auger, the critical areas of the auger are: a. The auger body. It should be clean and shining. Sometimes an auger will appear clean when wet, but after it is dry it will be seen to be Moving parts hazard. -
Page 31: Removal And Replacement: Water Seal
Remove the old part from the auger and clean the mounting area. 4. Place a small bead of food grade silastic sealant (such as 732 RTV or Scotsman part number RETAINING 19-0529-01) on the area of the auger where the RING water seal is to be mounted. -
Page 32: Removal And Replacement: Evaporator
NME1854R & FME2404R REMOVAL AND REPLACEMENT: Evaporator To Reassemble the Evaporator and Auger 1. After the gear motor has been inspected, fasten the evaporator to the gear motor, be sure that the number of shims indicated on the gear case cover... -
Page 33: Removal And Replacement: Gear Motor Assembly
NME1854R & FME2404R REMOVAL AND REPLACEMENT: Gear motor Assembly WATER SHED DRIVE MOTOR SEAL OUTPUT GEAR, OUTPUT SHAFT, AND BEARINGS BEARING To Remove and Repair the Gear motor Assembly: (Assuming that the procedures through removal of the water seal have been performed.) 1. -
Page 34: Refrigeration System Service
NME1854R & FME2404R REFRIGERATION SYSTEM SERVICE General: This ice machine uses R-404A refrigerant and polyolester oil. Do NOT use mineral oil in this refrigeration system. · When the system is serviced, a special liquid line drier is required. It is included with replacement compressors. - Page 35 NME1854R & FME2404R What to Do Before Calling for Service If the machine is off, not making ice: 1. Check the water supply to the ice machine. The machine is designed to shut off if there is no water to it. Check the filters if there are any.