Table of Contents
Advertisement
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
FOR THE INSTALLER , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 4
FOR THE PLUMBER , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 5
FOR THE INSTALLER: Final Check List , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 7
START UP , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 8
COMPONENT DESCRIPTION , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 9
Control Box , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 10
ELECTRICAL SEQUENCE: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 11
COMPONENT DESCRIPTION , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 12
OPERATION , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 13
OPERATION: Refrigeration , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 14
SENSOR and CONDENSER MAINTENANCE , , , , , , , , , , , , , , , , , , , , , , , , Page 16
BEARING MAINTENANCE , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 17
AUGER MAINTENANCE , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 18
SERVICE DIAGNOSIS: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 19
SERVICE DIAGNOSIS , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 20
CONTROL SYSTEM DIAGNOSTICS , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 21
REMOVAL AND REPLACEMENT: Bearing And Breaker , , , , , , , , , , , , , , , , , , Page 23
REMOVAL AND REPLACEMENT: Auger , , , , , , , , , , , , , , , , , , , , , , , , , , Page 24
REMOVAL AND REPLACEMENT: Water Seal , , , , , , , , , , , , , , , , , , , , , , , Page 25
REMOVAL AND REPLACEMENT: Evaporator , , , , , , , , , , , , , , , , , , , , , , , Page 26
REMOVAL AND REPLACEMENT: Gearmotor , , , , , , , , , , , , , , , , , , , , , , , , Page 27
What to Do Before Calling for Service , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 29
This manual was printed on recycled paper.
Keep it for future reference.
Table of Contents
, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 28
January 2000
Page 1
NME1254 & FME1504
Both models feature: front service for the
evaporator, gearmotor, control box, water reservoir
and bin control; electronic circuitry for monitoring
ice and water level; a thermostatic expansion
valve; and R-404A as the refrigerant.
, , , , , , , , , , , , , , , , , , , , , Page 3
Note this symbol when it appears.
It marks a potential hazard.
Advertisement
Table of Contents
Related Manuals for Scotsman FME1504
Summary of Contents for Scotsman FME1504
-
Page 1: Table Of Contents
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 FOR THE INSTALLER: Environmental Limitations FOR THE INSTALLER , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 4 FOR THE PLUMBER , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Page 5... -
Page 2: For The Installer
FOR THE INSTALLER These machines are designed to fit the following Scotsman storage bins: · SB480 and extensions (with bin top KBT18) · HTB555 or BH550 - direct fit · BH800 using bin top KBT23 · BH801 using bin top KBT29 ·... -
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 use of any part and/or other components not specifically approved by Scotsman. -
Page 4: For The Installer
Secure the machine to the bin with the hardware provided with the machine. Fasten The Machine To The Bin With The Hardware Supplied With The ice machine June 2002 Page 4 Level The Assembly Gasket... -
Page 5: For The Plumber
Storage Bin: A separate gravity type drain needs to be run, similar to the air cooled drain. Insulation of this drain line is recommended. January 2000 Page 5 Ice Machine Drain 3/4" FPT Bin Drain 3/4" FPT... -
Page 6: For The Electrician
The machine requires a solid chassis to earth ground wire. Connect the ice machine to its own electrical circuit so it is individually fused. Voltage variation must remain within design limitations, even under starting conditions. -
Page 7: For The Installer: Final Check List
NME1254 & FME1504 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? Leveled? 2. Is there an electrical service disconnect... -
Page 8: 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 Customer Evaluation and Registration form, and mail it to Scotsman. June 2002 Page 8... -
Page 9: Component Description
Cut Out 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. -
Page 10: Control Box
NME1254 & FME1504 Control Box Contactor: A definite purpose contactor connecting the compressor 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 11: 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 12: Component Description
COMPONENT DESCRIPTION Evaporator: A refrigerated vertical tube filled 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”... -
Page 13: Operation
OPERATION Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, goes to the water reservoir which it enters through the float valve. The water then goes out the bottom of the reservoir tank to the bottom of the evaporator. Reservoir overflow or evaporator condensation is routed to the drain. -
Page 14: Operation: Refrigeration
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 condenser (air or water cooled) the gas is cooled by either air or water and it then condenses into a liquid. -
Page 15: Cleaning & 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 16: Sensor And Condenser Maintenance
AND OUT ICE LEVEL 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 17: 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 18: Auger Maintenance
Disconnect electrical power before beginning maintenance. In some areas, the water supply to the Ice Machine will contain a high concentration of minerals, and that will result in an evaporator and auger becoming coated with mineral scale, requiring a more frequent removal than twice per year. -
Page 19: 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 20: Service Diagnosis
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... -
Page 21: 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 22: Removal And Replacement: Water Reservoir & Bin Control
REMOVAL AND REPLACEMENT: Water Reservoir & Bin Control WATER RESERVOIR 1. Shut off the water supply to the ice machine. 2. Remove front panel. 3. Remove reservoir cover. 4. Disconnect water inlet tube from reservoir inlet fitting. 5. To remove float valve, push in “locking tabs” as shown and pull float up. -
Page 23: 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 24: Removal And Replacement: Auger
1. 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 stained. Scrub the auger with ice machine cleaner and hot water. Ice machine cleaner is an acid. Handle it with extreme care, keep out of the reach of children. -
Page 25: 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 26: Removal And Replacement: 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. Heat sink the TXV body when unsweating or resweating the adjacent tubing. -
Page 27: Removal And Replacement: Gearmotor
REMOVAL AND REPLACEMENT: Gearmotor Electrical Shock Hazard. Electrical power can cause personal injury. Disconnect electrical power before beginning. To Check the Motor: 1. Remove wires from terminals 1 and 2. 2. Use an ohmmeter to check for continuity. If there is none, replace the motor only. -
Page 28: Refrigeration System Service
10. Re-open the manifold valves until all liquid has flowed out of the hoses. 11. Shut the low side access valve on the ice R-404A machine. Tank Must 12. Remove hoses from ice machine and replace Be in Liquid all caps. Dispensing Position - Check Tank! -
Page 29: What To Do Before Calling For Service
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.