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.
This machine is a combination nugget ice maker
and countertop dispenser, with the option of wall
mounting.
The 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.
Table of Contents
FOR THE INSTALLER: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FOR THE INSTALLER: Environmental Limitations . . . . . . . . . . . . . . . . . . . 3
FOR THE INSTALLER: Wall Mount Kit . . . . . . . . . . . . . . . . . . . . . . . . . 5
FOR THE INSTALLER: Soda Valve Kit . . . . . . . . . . . . . . . . . . . . . . . . . 6
FOR THE PLUMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
FOR THE ELECTRICIAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
FOR THE INSTALLER: Final Check List . . . . . . . . . . . . . . . . . . . . . . . . 9
INITIAL START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
COMPONENT DESCRIPTION: Control Box . . . . . . . . . . . . . . . . . . . . . . . 13
ELECTRICAL SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
OPERATION: Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
OPERATION: Refrigeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
OPERATION: Ice Vending . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CLEANING and SANITIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
MAINTENANCE AND CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SERVICE DIAGNOSIS: Condition - No Ice Being Produced . . . . . . . . . . . . . . 21
SERVICE DIAGNOSIS: Condition - Low Ice Production . . . . . . . . . . . . . . . . 24
SERVICE DIAGNOSIS: Condition - Poor or No Ice Dispensing . . . . . . . . . . . . . 25
REMOVAL AND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFRIGERATION SERVICE: HP62 . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
REFRIGERATION SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CIRCUIT BOARD TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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.
Note this symbol when it appears.
It marks a possible hazard.
NDE550
&
NDE650
April 1997
Page 1
