User manual SCOTSMAN ND650

[. . . ] ND650 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. The ND650 is a combination nugget ice maker and countertop dispenser, with the option of wall mounting. The ND650 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 R502 refrigerant. The ice dispensing section is a seamless plastic storage bin, with a stainless steel ice agitator at the bottom to sweep the ice into the dispensing chute. TABLE OF CONTENTS For the Installer Specifications . [. . . ] //////////////////////////////WARNING/////////////////////////// DO NOT USE any ice produced from the cleaning solution. /////////////////////////////////////////////////////////////////////////// 15. Add warm water to the ice storage bin and thoroughly wash and rinse all surfaces within the bin. Sanitize the bin interior with an approved sanitizer using the directions for that sanitizer. Replace the ice storage bin cover, and the front panel. March, 1989 Page 18 ND650 MAINTENANCE AND CLEANING ///////////////////////////WARNING///////////////////////////// Disconnect electrical power before beginning. ////////////////////////////////////////////////////////////////////////// 1. 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 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 grommets in the ice chute, and wipe them clean. BIN CONTROL SENSOR BIN CONTROL SENSOR CLEAN WATER SENSOR PROBE ////////CAUTION////// THE TIP IS MADE OF GLASS ////////////////////////////// BIN TOP ICE SWEEP 3. The bearing in the breaker should also be checked at least two times per year. Check the 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 Inspect the assembly, looking for wear. Check and tighten all bolts and screws. March, 1989 Page 19 ND650 MAINTENANCE AND CLEANING In some areas, the water supply to the ice maker will contain a high concentration of minerals, 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. Note: Water filters can filter out suspended solids, but not dissolved solids. For more information on removal of these parts, see REMOVAL AND REPLACEMENT. Remove 3 hex studs holding ice chute cover to ice chute, and remove cover. Loosen band clamp under ice chute, and remove ice chute from evaporator. After the auger has been removed, allow the auger to dry: if the auger is not bright and shiny, it must be cleaned. Reverse to reassemble. ALLEN HEAD SCREWS BREAKER AND AUGER ASSEMBLY March, 1989 Page 20 ND650 SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: ICE MAKER DOES NOT OPERATE A. Check: The 3 reset switches, (circuit board, high and low pressure): depress and release each switch. If the still does not start, check: the spout switch; the high and the low side pressures. [. . . ] D) After replacing parts as required, (if any) reassemble the gearcase. The two smaller gears and the oil should be in the lower case, the output gear will be with the cover. As you lower the cover onto the lower case, cover will have to be moved closer to the second gear after the output gear has cleared the second gear top bearing. E) After the case is together, and the locating pins are secure in both ends, replace all cap screws. [. . . ]