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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 this ice system.
FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2
FOR THE INSTALLER: Environmental Limitations · · · · · · · · · · · · · · · · · · · · · · · · 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
START UP · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 9
COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 10
COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 11
COMPONENT DESCRIPTION: Control Box · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 12
ELECTRICAL SEQUENCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 13
OPERATION: Performance · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 14
OPERATION: Water · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 15
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 16
CLEANING and SANITATION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 17
SENSOR MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 18
BEARING MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 19
AIR COOLED CONDENSER MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · Page 20
AUGER MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 21
SERVICE DIAGNOSIS: · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 22
SERVICE DIAGNOSIS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 23
CONTROL SYSTEM DIAGNOSTICS
REMOVAL AND REPLACEMENT: Water Reservoir & 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: Gearmotor · · · · · · · · · · · · · · · · · · · · · · · · · · Page 30
REMOVAL AND REPLACEMENT: Fans · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 31
REFRIGERATION SERVICE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 32
This manual was printed on recycled paper. Keep
it for future reference.
Note the Warning symbol where it appears, it
marks a possible hazard.
This product contains 2 separate ice making
systems in one cabinet.
Table of Contents
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 24
January 2000
Page 1
NME1854 & FME2404
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Table of Contents
Related Manuals for Scotsman FME2404
Summary of Contents for Scotsman FME2404
- Page 1 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 this ice system. FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2 FOR THE INSTALLER: Environmental Limitations ·...
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Page 2: For The Installer
FOR THE INSTALLER The FME2404 and the NME1854 are modular flakers designed to fit the following Scotsman storage bins: · B90 and extensions (with bin top KBT18) · BH800 no bin top required. · BH900 using bin top KBT14. ·... -
Page 3: For The Installer: Environmental Limitations
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... - Page 4 NME1854 & FME2404 FOR THE INSTALLER Location: Typical Storage Bin with Extension and Bin Top After uncrating and inspection the unit is ready for installation. Install the machine in a location where it has enough space around it to be accessible for service, and reserve a minimum of 6"...
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Page 5: For The Installer: Location
NME1854 & FME2404 FOR THE INSTALLER: Location ALLOW ROOM FOR AIR DO NOT STACK ANYTHING IN CIRCULATION FRONT OF THE MACHINE AND SERVICE ACCESS January 2000 Page 5... -
Page 6: For The Plumber
FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet Air Cooled Models: Connect to a water supply that is cold and potable. Use tubing, and connect to the single the back of the cabinet. This connection supplies water to both ice making systems. Install a hand valve near the machine to control the water supply. -
Page 7: For The Electrician
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. The ice machine must be connected to its own electrical circuit so that it is individually fused. WATER COOLED... - Page 8 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.
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Page 9: Start Up
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 manufacturers registration and mail it to Scotsman. January 2000 Page 9... -
Page 10: Component Description
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. Evaporator: A vertical stainless steel tube, refrigerated, and water filled. - Page 11 COMPONENT DESCRIPTION Evaporator: A refrigerated vertical tube filled with water and containing a water seal and auger. Auger: A solid stainless steel double spiral auger, it pushes the ice crystals up to the top of the evaporator. Water Seal: A two part “face” seal, the top half rotating with the auger, the bottom half stationary, the sealing action being where the two seal “faces”...
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Page 12: Component Description: Control Box
NME1854 & FME2404 COMPONENT DESCRIPTION: Control Box 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. The relays are for the... -
Page 13: Electrical Sequence
The compressor will not restart until 2 minutes or more have passed after the last shut down. If the path between the ice level sensors remains clear for more than 10 seconds the ice machine will restart. Control Board Protection Devices ·... -
Page 14: Operation: Performance
OPERATION: Performance Typical Low Side Pressure · Air Cooled: 34 - 38 PSIG · Water Cooled: 32 PSIG Typical Discharge Pressure · Air Cooled: 220 - 275 PSIG · Water Cooled: 245 PSIG Typical Compressor Amp Draw · Single phase = 4.3 ·... -
Page 15: Operation: Water
OPERATION: Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, splits into two separate lines, flows to each water reservoir which it enters through the float valve. The water then goes out the bottom of the reservoir tanks to the bottom of each evaporator. -
Page 16: Operation: Refrigeration
OPERATION: Refrigeration The following description applies to each of the two separate ice making systems. Beginning at the compressor, refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser. At the condenser (air or water cooled) the gas is cooled by either air or water and it then condenses into a liquid. -
Page 17: Cleaning And Sanitation
To properly clean and maintain this product, 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 18: Sensor Maintenance
SLIDE TO REMOVE CLEAN THE LIGHT SENSORS 2. The ice machine senses water level by a probe located in the water reservoir. At least twice a year, the probe should be removed from the reservoir, and the tip wiped clean of mineral build-up. -
Page 19: Bearing Maintenance
Ice Sweep If the bearing only needs grease, inject grease into 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. -
Page 20: Air Cooled Condenser Maintenance
AIR COOLED CONDENSER MAINTENANCE Clean or replace the air filters regularly. Clean each air cooled condenser. Use a vacuum cleaner or coil cleaner if needed. Do NOT use a wire brush. Moving Parts Hazard. Disconnect electrical power before beginning. A. Remove top panel. B. -
Page 21: Auger Maintenance
AUGER MAINTENANCE In some areas the water supply to the ice machine will have a great deal of minerals in it, and that will result in an evaporator and auger becoming coated with these minerals, requiring a more frequent removal than twice per year. If in doubt about the condition of the evaporator and auger, the auger can be removed so the parts can be inspected. -
Page 22: Service Diagnosis
Check for water interruption (water cooled) or fan motor failure (air cooled). yet shut unit down. Circuit board has shut ice machine down due to high auger motor amp draw. Check for cause of high amp draw, including bearings, gearmotor condition and scale on auger and in evaporator. - Page 23 Replace float valve or seat Recover and weigh refrigerant. Weigh in correct charge. Acid clean water cooled condenser. Clean out bin drain. Drains must be separate. Adjust or replace Clean with Scotsman Ice Machine Cleaner Oil or replace motor...
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Page 24: 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 25: Removal And Replacement: Water Reservoir & Bin Controls
REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls WATER RESERVOIR 1. Shut off water supply. 2. Remove front panel. 3. Remove reservoir cover. 4. Disconnect water inlet tube from reservoir inlet fitting. 5. To remove float valve, push in on “locking tab” as shown and pull valve up. -
Page 26: Removal And Replacement: Bearing And Breaker
7. Reverse to reassemble: specific tools and materials are required to install properly. a. Add food grade grease such as Scotsman part number 19-0569-01 to the seal area before installing on the auger. b. Check the seal to shaft areas for cuts, or rough spots: none are permitted. -
Page 27: Removal And Replacement: Auger
Scrub the auger with ice machine cleaner and hot water. CAUTION Ice machine cleaner is an acid. Handle it with extreme care, keep out of the reach of children. 2. The water seal area. Because the auger has been removed, the water seal will have to be replaced. -
Page 28: Removal And Replacement: Water Seal
4. Place a small bead of food grade silastic sealant (such as 732 RTV or Scotsman part number 19-0529-01) on the area of the auger where the water seal is to be mounted. -
Page 29: Removal And Replacement: Evaporator
To Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) 1. Recover the refrigerant from the ice machine. 2. Unsweat the refrigerant connections: a) At the thermostatic expansion valve outlet. CAUTION Heat sink the TXV body when unsweating or resweating the adjacent tubing. -
Page 30: Removal And Replacement: Gearmotor
1. Remove the electrical wires from the gear drive motor. 2. Unscrew the 4 cap screws holding the gear motor to the base of the machine. 3. Remove the gear motor from the ice machine. Bench test the gear motor, check for oil leaks, noise, and amp draw. -
Page 31: Removal And Replacement: Fans
REMOVAL AND REPLACEMENT: Fans Electrical Shock Hazard Disconnect electrical power before beginning. LOCATING PINS Removing Condenser Fan Motor Assembly 1. Remove the top panel. 2. Unplug the two fan motor wire leads from the fan motors. 3. Remove two hex head bolts from top end of fan motor assembly, (see the illustration). -
Page 32: Refrigeration Service
Tank Must 11. Shut the low side access valve on the ice Be in Liquid machine. Dispensing 12. Remove hoses from ice machine and replace Position - all caps. Check Tank! SCALE January 2000...