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 NM1850RH (remote high side) is the
freezer portion of a commercial ice machine. It
is designed to be connected to the
condensing section of a refrigeration system,
specifically a supermarket R-502 system. It
consists of two evaporators, two gearmotors,
two liquid line valves, two control boxes, two
thermostatic expansion valves, and an EPR
valve.
TABLE OF CONTENTS
For the Installer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 5
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Initial Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Component Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Electrical Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Maintenance and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 17
Removal and Replacement
Bin Controls and Reservoir . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 20
Bearing and Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 21
Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 24
Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 25
Circuit Board Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 26
Parts lists and wiring diagrams are in the center of this manual, printed on yellow paper.
NM1850RH
May, 1989
Page 1