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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.
The FME804R and NME654R are a remote
condenser modular ice systems that fit a variety of
FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2
FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 3
REMOTE CONDENSER SPECIFICATIONS · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 4
Remote Condenser Location · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 5
FOR THE INSTALLER: Remote Condenser · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 6
FOR THE INSTALLER: Coupling Instructions · · · · · · · · · · · · · · · · · · · · · · · · · · Page 7
FOR THE INSTALLER: Location · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 8
FOR THE PLUMBER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 9
FOR THE ELECTRICIAN · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 10
FOR THE INSTALLER: Completed Installation · · · · · · · · · · · · · · · · · · · · · · · · · · Page 11
FOR THE INSTALLER: Final Check List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 12
START UP · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 13
COMPONENT DESCRIPTION · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 14
COMPONENT DESCRIPTION: Control Box · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 15
ELECTRICAL SEQUENCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 16
OPERATION: Water · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 17
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 18
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 19
OPERATION: Refrigeration · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 20
CLEANING & SANITIZING · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 21
SENSOR MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 22
BEARING MAINTENANCE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 23
AUGER AND OTHER MAINTENANCE
OPERATING CHARACTERISTICS
SERVICE DIAGNOSIS:
SERVICE DIAGNOSIS:
CONTROL SYSTEM DIAGNOSTICS
REMOVAL AND REPLACEMENT: Water Reservoir & Bin Controls · · · · · · · · · · · · · · · Page 29
REMOVAL AND REPLACEMENT: Bearing And Breaker · · · · · · · · · · · · · · · · · · · · Page 30
REMOVAL AND REPLACEMENT: Auger · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 31
REMOVAL AND REPLACEMENT: Water Seal · · · · · · · · · · · · · · · · · · · · · · · · · · Page 32
REMOVAL AND REPLACEMENT: Evaporator · · · · · · · · · · · · · · · · · · · · · · · · · · Page 33
REMOVAL AND REPLACEMENT: Gearmotor Assembly · · · · · · · · · · · · · · · · · · · · Page 34
REFRIGERATION SERVICE · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 35
Table of Contents
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 24
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· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 26
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January 2000
NME654R & FME804R
Scotsman storage bins. Their features include:
front service for the freezer, gearmotor, control
box, water reservoir, and bin control; an electronic
control (AutoSentry) for monitoring ice and water
level; a thermostatic expansion valve; and HP62 as
the refrigerant.
Note this symbol when it appears.
It is an alert for important safety
information on a potential hazard.
Page 1
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Related Manuals for Scotsman FME804R
Summary of Contents for Scotsman FME804R
- Page 1 The FME804R and NME654R are a remote condenser modular ice systems that fit a variety of FOR THE INSTALLER · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Page 2 FOR THE INSTALLER ·...
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Page 2: For The Installer
NME654R & FME804R FOR THE INSTALLER These machines are designed to fit the following Scotsman storage bins: · 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). -
Page 3: Storage Bin
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 4: Remote Condenser Specifications
NME654R & FME804R REMOTE CONDENSER SPECIFICATIONS 2.75 Air Discharge 14.53 Air Intake Model Use with ERC101-1 1 FME804R or 1 NME654R ERC DIMENSIONS 2.00 5.08 Model ERC101 19.75 50.17 Liquid Line Discharge Line .38 Quick Connect Fitting .50 Quick Connect Fitting 1.27... -
Page 5: Remote Condenser Location
Located ABOVE Ice Machine Remote Condenser Located BELOW Ice Machine NME654R & FME804R Configurations that do NOT meet these requirements must receive prior written authorization from Scotsman. Do NOT: · Route a line set that rises, then falls, then rises. -
Page 6: For The Installer: Remote Condenser
NME654R & FME804R FOR THE INSTALLER: Remote Condenser Location Limited to a 40 foot or a 25 foot length of precharged refrigerant tubing connecting the ice machine to the remote condenser. The condenser must be above or level with the ice machine. -
Page 7: For The Installer: Coupling Instructions
6. After all connections are made, and after the NO SCHRADER king valve has been opened (do not open at this time), check the couplings for leaks. TO ICEMAKER January 2000 Page 7 NME654R & FME804R Tighten Swivel Nut Rotate Swivel Nut ¼ Turn More... -
Page 8: For The Installer: Location
NME654R & FME804R FOR THE INSTALLER: Location TYPICAL INSTALLATION REMOTE CONDENSER ROOF CUTAWAY EXCESS PRECHARGED SERVICE TUBING INSIDE ACCESS Ice Machine BUILDING SERVICE ACCESS SIDE AND BACK WALL CUTAWAY January 2000 Page 8... -
Page 9: For The Plumber
CONNECT TO COLD WATER VENT BIN DRAIN 3/4" FPT FLOOR DRAIN NME654R & FME804R The recommended water supply is cold water. Use 3/8" O.D. copper tubing, connect to the 3/8" male flare at the back of the cabinet. Install a hand valve near the machine to control the water supply. -
Page 10: For The Electrician
NME654R & FME804R FOR THE ELECTRICIAN CONFORM TO ALL APPLICABLE CODES Connect the electrical power to the unit 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. -
Page 11: For The Installer: Completed Installation
NME654R & FME804R 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. ROOF CUT-AWAY... -
Page 12: For The Installer: Final Check List
NME654R & FME804R 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? ROOF 2. Is there an electrical service... -
Page 13: Initial Start-Up
5. The remote condenser fan turns, and the condenser begins to discharge warm air. NME654R & FME804R Pre-Start Inspection 4. Check that the refrigerant lines are properly installed. -
Page 14: Component Description
NME654R & FME804R COMPONENT DESCRIPTION Control Box: Contains the electrical controls that operate the machine. High Pressure Cut Out: An automatic reset switch sensing the high side refrigeration pressure. It is set to shut the machine off at 450 PSIG. -
Page 15: Component Description: Control Box
Water OK Light Power Light Service Light Freeze Light Bin Full Light LED1 Compressor Relay NME654R & FME804R · Current meter to measure the amp draw of the auger drive motor The loads include: · Liquid line coil · Auger drive motor Potential Relay: The compressor start relay. -
Page 16: Electrical Sequence
NME654R & FME804R ELECTRICAL SEQUENCE There are 7 indicator lights on the control board: · WTR-OK (Water OK). Green. Glowing. Glows when there is water in the reservoir. · PWR-OK (Power OK). Green. Glowing. Glows when the control board has power and is functional. -
Page 17: Operation: Water
NME654R & FME804R OPERATION: Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, goes to the water Water Level: The correct water level should be checked when the machine is making ice. Locate the reservoir which it enters through the float valve. -
Page 18: Operation: Refrigeration
NME654R & FME804R OPERATION: Refrigeration Beginning at the compressor, the refrigerant is compressed into a high temperature gas. The discharge line directs this gas to the condenser. At the remote condenser the gas is cooled by air and condenses into a liquid. This high pressure liquid... - Page 19 LIQUID LINE LIQUID LINE KING VALVE COMPRESSOR RECEIVER January 2000 Page 19 NME654R & FME804R Refrigeration Schematic REMOTE CONDENSER DETAIL OF HEAD PRESSURE CONTROL VALVE THERMOSTATIC EXPANSION VALVE VALVE...
- Page 20 NME654R & FME804R OPERATION: Refrigeration During the pump down cycle (usually initiated by the circuit board de-energizing the liquid line valve) the discharge gases flow through their normal path to the remote condenser, through the head pressure control, and into the receiver.
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Page 21: Cleaning And Sanitizing
CLEANING & SANITIZING 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. It is the USER’S RESPONSIBILITY to see that the unit is properly maintained. It is always preferable, and less costly in the long run, to avoid possible down time by keeping it clean;... -
Page 22: Sensor Maintenance
SENSORS SLIDE LEFT TO REMOVE 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 23: Bearing Maintenance
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 24: Auger And Other Maintenance
NME654R & FME804R AUGER AND OTHER MAINTENANCE In some areas the water supply to the icemaker 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. -
Page 25: Operating Characteristics
Pump Down Pressure Switch · Opens at 15 PSIG · Closes at 30 PSIG Compressor · RS58C1E-PAA-213 Bin Control · Electric Eye at base of ice chute. Water Safety · Thermistor in reservoir NME654R & FME804R January 2000 Page 25... -
Page 26: Service Diagnosis
NME654R & FME804R SERVICE DIAGNOSIS: Symptom No ice is made, nothing operates Possible Cause Unit off due to no power. Unit off due to master switch in Off position Unit off due to low water level in reservoir Unit off due to ice level sensors... - Page 27 Check base of evaporator & drip pan. If the seal leaks, shut off the water, remove the auger, replace the water seal. Check gear motor for water infiltration. Clean out bin drain Adjust or replace Clean with Scotsman Ice Machine Cleaner Oil or replace motor...
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Page 28: 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 29: Removal And Replacement: Water Reservoir & Bin Controls
8. Reverse to reassemble. Float Assembly Locking Tabs NME654R & FME804R BIN CONTROLS (Ice Level Sensors) 1. Disconnect electrical power. 2. Remove front panel. 3. Remove control box cover. 4. Locate ice chute, at the base of the chute, in front of and behind it are two plastic bin control mounts. -
Page 30: 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 31: Removal And Replacement: Auger
Lift up on breaker to remove from auger. If the auger is stuck: BREAKER - BEARING ASSEMBLY NME654R & FME804R Use a slide hammer type puller to pull on the auger at the threaded hole. The size of that hole is 5/8"-18. -
Page 32: 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 33: Removal And Replacement: Evaporator
Not Drop Into the Evaporator. 3. Complete the reassembly by reversing the disassembly for the breaker & thrust bearing assembly. NME654R & FME804R Head Pressure Control Valve 1. Recover system of refrigerant 2. Break off process tube on the top of the OLD head pressure control valve. -
Page 34: Removal And Replacement: Gearmotor Assembly
NME654R & FME804R REMOVAL AND REPLACEMENT: Gearmotor Assembly WATER SHED OUTPUT GEAR, OUTPUT SHAFT, AND BEARINGS To Remove and Repair the Gearmotor Assembly: (Assuming that the procedures through removal of the water seal have been performed.) 1. Remove the electrical wires from the gear drive motor. -
Page 35: Refrigeration Service
Scotsman also recommends that, at the time of initial start up, gauges not be used. · If gauges must be used, don’t always check the high side pressure.