TDE470 Service Manual
Purpose of this manual: To provide detailed
installation and operation instructions; to give
insights into how the machine works; to list
possible causes for problems; and to suggest
procedures for specific types of service.
The TDE470 is an ice maker and dispenser
combined into one cabinet. The refrigeration
system is air cooled, using R-134a as a refrigerant.
The control system uses electric eyes as a bin
control and a water level sensor as the water
safety control. As ice is made, it fills a plastic
storage bin. When ice is needed, a motor rotates a
stainless steel vane inside the storage bin and
sweeps the ice into the spout.
Table of Contents
Specifications: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
To The Installer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 3
For The Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
For The Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Optional Kits: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Wall Mount Kit (KWB1): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Final Check List & Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
User Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Component Location & Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10
Refrigeration System Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
Water System Operation: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Mechanical Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Electrical Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
Maintenance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Dispense Area Sanitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 16
Auger and Bearing Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17
Inspection: Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 18
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
Service Diagnosis: Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
Removal and Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24
Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 25
Bearings, Water Seal and Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 26
Bearing Replacement: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 27
Refrigeration System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 28
Gear Reducer Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 29
Auger Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 30
A Parts List and Wiring Diagram are located in the center of this manual, on yellow paper.
TDE470
February 1995
Page 1
