Table of Contents
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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 maker-dispenser.
The TDE650 is a combination nugget ice maker
and countertop dispenser, with the option of wall
mounting.
FOR THE INSTALLER: Specifications . . . . . . . . . . . . . . . . . . . . .
FOR THE INSTALLER: Environmental Limitations . . . . . . . . . . . . . . . .
FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . .
FOR THE INSTALLER: Final Check List . . . . . . . . . . . . . . . . . . . .
ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION: Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . .
DISPENSE AREA SANITATION . . . . . . . . . . . . . . . . . . . . . . .
SERVICE DIAGNOSIS: Circuit Board . . . . . . . . . . . . . . . . . . . . .
Parts Lists and Wiring Diagrams are printed on
yellow paper in the center of this manual.
This manual was printed on recycled paper.
Keep it for future reference.
Table of Contents
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The TDE650 ice making section is equipped with
the following features: electronic controls for bin
level and low water; thermostatic expansion valve;
front service for most components; and R-404A
(HP62) refrigerant. The ice dispensing section is a
seamless plastic storage bin, with a stainless steel
rotating vane to sweep the ice into the dispensing
chute.
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Note this symbol when it appears.
November 1995
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TDE550 & TDE650
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Table of Contents
Related Manuals for Scotsman TDE550
Summary of Contents for Scotsman TDE550
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Page 1: Table Of Contents
....November 1995 Page 1 TDE550 & TDE650 ... Note this symbol when it appears. -
Page 2: For The Installer: Specifications
TDE550 & TDE650 FOR THE INSTALLER: Specifications This ice maker-dispenser is designed to be mounted on a machine stand, or a countertop, or using wall mounting kit KWB3, hung from a wall. The sink may be retained, or removed and the optional longer splash panel (KSP2) installed in place of the original. -
Page 3: For The Installer: Environmental Limitations
They meet or exceed the standards of UL and NSF. 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
Counter Top or Machine Stand Installation The base of the icemaker-dispenser must be sealed to the object it rests upon. Food grade silastic sealant such as Scotsman part number 19-0529-01 is recommended. Place a bead of the sealant on the machine stand or counter top to match the outside edge of the cabinet base and sink. -
Page 5: For The Installer: Wall Mount Kit
3. Lift unit up and hook bracket “A” over bracket “B”. Slide unit until the two remaining holes are aligned and secure with the remaining (2) 1/4-20 bolts, flat washers and lock washers. November 1995 Page 5 TDE550 & TDE650 BASE ROUTING HOLE SIDE... -
Page 6: For The Plumber
TDE550 & TDE650 FOR THE PLUMBER CONFORM TO ALL APPLICABLE CODES Water Inlet Air Cooled Models: The recommended water supply is clean, 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 7: For The Electrician
TDE550 & TDE650 FOR THE ELECTRICIAN CONFORM TO ALL APPLICABLE CODES The electrical power to the unit is supplied through the junction box at the ELECTRICAL rear of the machine. POWER Check the nameplate (located on the back panel) for the voltage requirements, and for the minimum circuit ampacity. -
Page 8: For The Installer: Final Check List
TDE550 & TDE650 FOR THE INSTALLER: Final Check List BACK VIEW OF COMPLETED INSTALLATION 1. Is the icemaker-dispenser installed indoors, in a location where the air and water temperatures are ELECTRICAL? controlled, and where they do not go beyond design limitations? LEVELED? 2. -
Page 9: Initial Start Up
9. Give the owner/user the service manual, instruct him/her in the operation and maintenance requirements of the unit. Make sure they know who to call for service. 10. Fill out the Customer Evaluation and Warranty Registration form, and mail it in to Scotsman. November 1995 Page 9... -
Page 10: Component Description
TDE550 & TDE650 COMPONENT DESCRIPTION High Pressure Cut Out Switch: A manual 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. Evaporator: A vertical stainless steel tube, refrigerated, and water filled. - Page 11 EVAPORATOR AUGER WATER SEAL TDE550 & TDE650 Motor: A split phase motor that drives the gear reducer. Thrust Bearing: As the ice is pushed up the evaporator, the auger is thrust down, and pressure from the auger thrust is taken up by this bearing.
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Page 12: Component Description: Control Box
TDE550 & TDE650 COMPONENT DESCRIPTION: Control Box Circuit Board: The circuit board receives input signals from several sensors and translates them to control the electrical power supply to the various loads. The sensors include: Touch Free ice or water. Ice level in the bin. -
Page 13: Electrical Sequence
It automatically Splash Panel resets after 2 minutes, or, if pushed within the 2 Cleaning or minutes, resets the circuit board to enable the Touch Free Touch Free sensors. Disable Switch August 1994 Page 13 TDE550 & TDE650... -
Page 14: Operation: Water
TDE550 & TDE650 OPERATION: Water Water enters the machine through the 3/8" male flare at the rear of the cabinet, goes to a strainer and then 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. -
Page 15: Operation: Refrigeration
LIQUID LINE CONDENSER TDE550 & TDE650 At the evaporator, the refrigerant enters an area of relatively low pressure, where it can easily “boil off” or evaporate. As it evaporates, it absorbs heat from the evaporator and whatever is in contact with it (such as the water inside it). -
Page 16: Operation: Ice Vending
TDE550 & TDE650 OPERATION: Ice Vending Dispensing takes place when the Touch Free sensor’s infrared beam bounces back to the sensor from a container placed directly in front of ICE DISPENSING VANE If the container is in front of the... -
Page 17: Dispense Area Sanitation
Re-push the clean switch or allow 2 minutes to pass for the Touch Free system to reset. Pull Down on Chute to Remove TDE550 & TDE650 Splash Panel Cleaning or Touch Free Disable Switch Push and Release November 1995... -
Page 18: Cleaning And Sanitizing
TDE550 & TDE650 CLEANING and 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 19: Maintenance And Cleaning
BIN CONTROL SENSOR 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 20 TDE550 & TDE650 MAINTENANCE AND CLEANING In some areas, the water supply to the ice maker will contain a high concentration of minerals, and that will result in an evaporator and auger Moving Parts Hazard. Disconnect electrical power to the icemaker - dispenser before beginning.
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Page 21: Service Diagnosis
Contactor contacts do not make Replace contactor Start capacitor failed Potential relay failed Compressor windings open Compressor locked November 1995 Page 21 TDE550 & TDE650 Probable Correction Restore power Switch master switch to ON Check water supply, filter, strainer, float valve. Correct water supply... - Page 22 TDE550 & TDE650 SERVICE DIAGNOSIS Symptom No water is vended Makes ice, but with excessive noise Will not dispense ice Auger motor off, top light on board is ON (only up to serial number 804817-05M). Touch Free ice dispensing system does not operate water...
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Page 23: Service Diagnosis: Circuit Board
ON. If another Auger Motor Error occurs, the machine shuts down.* On when water level is low in the reservoir. * Not on models after serial number 804817-05M TDE550 & TDE650 Position On Board November 1995... -
Page 24: Removal And Replacement
TDE550 & TDE650 REMOVAL AND REPLACEMENT WATER RESERVOIR 1. Shut off the water supply to the icemaker. 2. Remove front panel and reservoir cover. 3. Disconnect inlet water line from valve. 4. To remove just the float, push the locking tab at the back of the valve mounting block in and lift the valve and block up and out of the reservoir tank. -
Page 25: 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 26 TDE550 & TDE650 REMOVAL AND REPLACEMENT To Remove the Auger: Turn off the water to the machine, and unclip the evaporator drain hose, pull it down and drain the evaporator into the bin or a container. Moving Parts Hazard. Disconnect electrical...
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Page 27: 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 28 TDE550 & TDE650 REMOVAL AND REPLACEMENT To Replace the Evaporator: (Assuming all the steps for removal of the thrust bearing, breaker, auger, and water seal have been performed.) 1. Discharge the refrigerant from the ice maker. 2. Unsweat the refrigerant connections: a) At the thermostatic expansion valve outlet.
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Page 29: To Remove And Repair The Gearmotor Assembly
They are likely to be fine if the oil is. TDE550 & TDE650 If there is evidence of water in the oil (rusty bearings and gears; the oil having a creamy white appearance;... -
Page 30: Refrigeration Service: R-404A (Hp62)
TDE550 & TDE650 REFRIGERATION SERVICE: R-404A (HP62) THIS ICE MACHINE USES HP62 REFRIGERANT AND POLYOLESTER COMPRESSOR OIL. DO NOT USE MINERAL OIL IN THIS REFRIGERATION SYSTEM. R-404A is a “Near Azeotrope”, and therefore liquid charging is required. Weigh into the discharge side as much as possible of the charge as liquid refrigerant. -
Page 31: November
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. -
Page 32: Circuit Board Service
TDE550 & TDE650 CIRCUIT BOARD SERVICE Printed Circuit Board Handling Precautions Follow these simple precaustions when replacing a Printed Circuit Board 1. Keep the replacement PC Board in the anit-static packaging until it is ready to be installed. 2. Be sure that your hands are clean.