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 . 23 Service Diagnosis Removal and Replacement Water Reservoir & Bin Controls . [. . . ] Slowly pour the cleaning solution into the water reservior until it is full. As the ice maker begins to use water from the reservoir, continue to add more cleaning solution to maintain a full reservoir. After all of the cleaning solution has been added to the reservoir, and the reservior is nearly empty, switch the master switch to OFF. After draining the reservior, as in step 6, wash and rinse the water reservoir. Continue ice making for at least 15 minutes, to flush out any cleaning solution. ///////////////////////////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 . 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. Check with a water treatment specialist regarding water treatment. ALLEN SCREWS For more information on removal of these parts, see REMOVAL AND REPLACEMENT. [. . . ] B) To lift off the cover, lift up until you can feel internal contact, then pull the cover towards the output gear end, and then lift the cover (with drive motor attached) up and away from the gear motor case. Note: The case cover output gear, bearings, and shaft are one pressed together assembly. If the oil level and condition is acceptable, quickly check the gears and bearings. If there is evidence of water in the oil (rusty bearings and gears; the oil having a creamy white appearance; oil level too high) carefully inspect the bearings and gears. [. . . ]