User manual SCOTSMAN NM1250R

[. . . ] NM1250R 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. 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 . 9 For the Electrician Start Up Operation . [. . . ] ///////////////////////////WARNING///////////////////////// DO NOT USE any ice produced from the cleaning solution. ///////////////////////////////////////////////////////////////////// 15. Add warm water to the ice storage bin and throughly wash and rinse all surfaces within the bin. Sanitize the bin interior with an approved sanitizer using the directions for that sanitizer. Replace the front panel. November, 1988 Page 23 NM1250R ICEMAKER MAINTENANCE: ////////////////////////////WARNING///////////////////////////// Disconnect electrical power before begining. ////////////////////////////////////////////////////////////////////////// 1. The bin control uses devices that sense light, therefore they must be kept clean enough so that they can "see". At least twice a year, remove the bin control sensors from the base of the ice chute, and wipe the inside clean, as illustrated. ICE DISCHARGE CHUTE SLIDE IN AND OUT ICE LEVEL SENSORS WATER RESERVOIR WATER LEVEL SENSOR Inspect the assembly, looking for wear . Use a vacuum cleaner or coil cleaner if needed. Check and tighten all bolts and screws. ///////////////////////////////////////// CAUTION: SENSOR TIP IS MADE OF GLASS /////////////////////////////////////////// ICE SWEEP 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 buildup. The top bearing in the breaker should also be checked at least two times per year. Check the thrust bearing by: · removing the ice chute cover · unscrewing the ice sweep · removing the water shed · using a spanner wrench and unscrewing the breaker cover · unscrewing the auger stud SPANNER WRENCH BREAKER COVER BREAKER November, 1988 Page 24 NM1250R MAINTENANCE: Auger ////////////////////////////WARNING///////////////////////////// Disconnect electrical power before begining. ////////////////////////////////////////////////////////////////////////// In some areas the water supply to the icemaker will have a great deal of minerals in it, and that will result in an evaporator and auger becoming coated with these minerals, requiring a more frequent removal than twice per year. If in doubt about the condition of the evaporator and auger, the auger can be removed so the parts can be inspected. Water filters can filter out suspended solids, but not dissolved solids. "Soft" water may not be the complete answer. Check with a water treatment specialist regarding water treatment. ALLEN SCREWS For more information on removal of these parts, see REMOVAL AND REPLACEMENT. To remove the auger, remove front and top panels. If top panel cannot be removed, or if there is less than 6" clearance over the top of the machine, the gearmotor/evaporator may be slid out for service access. Remove 3 hex studs holding the ice chute cover to the ice chutebody, and remove the cover. [. . . ] Note: If the gearcase cover was replaced, the replacement part was shipped with a certain number of shims. The number of shims used must match the number on the gearcase cover. Do not use the old shims unless there is a shortage. Bench test the gearmotor, check for oil leaks, noise, and amp draw. November, 1988 Page 36 NM1250R REMOVAL AND REPLACEMENT: Gearmotor WATER SHED OUTPUT SHAFT SEAL SHIMS CENTRIFUGAL SWITCH DRIVE MOTOR GEARCASE COVER, OUTPUT SHAFT, OUTPUT GEAR, AND BEARINGS MOTOR BEARING SHAFT SEAL 1ST GEAR AND BEARINGS 2ND GEAR AND BEARINGS GASKET GEARCASE November, 1988 Page 37 NM1250R ELECTRONIC CONTROL TESTER INSTRUCTIONS FOR USING TESTER MODEL FC1 (Optional, order part no. [. . . ]