Scotsman NM1250R - Manual

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 system.
The NM1250R is a remote condenser modular
ice system that produces up to 1400 lbs. of
nugget ice in 24 hours at 90
0
F. air and 70
0
F.
water.
It features: front service for the freezer,
gearmotor, control box, water reservoir, and
bin control; stackable with kit KSTACK30; an
electronic circuit for monitoring ice and water
level; a thermostatic expansion valve; and
R-502 as the refrigerant.
TABLE OF CONTENTS
For the Installer
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Remote Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
For the Plumber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
For the Electrician . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Final Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Component Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Maintenance & Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Service Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Removal and Replacement
Water Reservoir & Bin Controls . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Bearing & Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Auger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Watert Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Gearmotor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Circuit Board Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Parts Lists and Wiring Diagrams are located in the center of this manual, printed on yellow
paper.
NM1250R
November, 1988
Page 1