User manual SCOTSMAN NME1850R

[. . . ] NME1850R & FME2400R 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 product is a remote condenser modular ice system. It features: front service for the freezer, gear motor, control box, water reservoir, and bin control; an electronic circuit for monitoring ice and water level; and R-404A as the refrigerant. TABLE OF CONTENTS FOR THE INSTALLER . FOR THE INSTALLER: Completed Installation . [. . . ] Check and tighten all bolts and screws. RESERVOIR ICE SWEEP WATER LEVEL SENSOR ////////////////////////////////////// CAUTION: THE TIP IS MADE OF GLASS /////////////////////////////////////// BREAKER COVER 3. The top bearing in the breaker should also be checked at least two times per year. Check the breaker bearing by: · removing the ice chute cover · unscrewing the ice sweep · removing the water shed · unscrewing the breaker cover (left hand thread) · unscrewing the auger stud January 1995 Page 21 NME1850R & FME2400R MAINTENANCE AND CLEANING In some areas the water supply to the ice maker 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. Note: 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 For more information on removal and replacement of these parts, see REMOVAL AND REPLACEMENT. Shut off water and electrical supply. 1. To remove the auger, remove the front and top panels. Push back bail clamp holding ice chute cover to ice chute, and remove cover. Loosen band clamp under ice chute, and remove ice chute from evaporator. Remove 4 allen screws holding breaker to evaporator. After the auger has been removed, allow the auger to dry; if the auger is not bright and shiny, it must be cleaned. Clean the auger and evaporator as required. Reverse to reassemble. ALLEN SCREWS BREAKER & BEARING & AUGER ASSEMBLY January 1995 Page 22 NME1850R & FME2400R SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: NOTHING OPERATES A. Check: Voltage to the unit, restore it if there is none. Check: The master switch, switch ON if off. Check: The reset switch (high pressure): depress and release the switch. If the unit still does not start, check the spout switch, or high side pressure. Check the high pressure cut out switch, if closed, go to E; if open: 1. Check the high side pressure, reset the switch and observe that the fan is forcing air through the condenser. If the switch opens at pressures below 400 psig, replace the switch. [. . . ] 48 50 53 55 58 60 63 66 69 72 75 78 81 85 88 91 95 99 102 106 110 114 118 123 127 132 136 141 104 106 108 110 112 114 116 118 120 122 124 126 128 130 132 134 136 138 140 142 144 146 148 150 152 154 156 158 . 499 ALLEN WRENCH Torque Stem to 6-8 ft. lb. . January 1995 Page 33 NME1850R & FME2400R CIRCUIT BOARD TESTING WARNING These procedures require the machine to be connected to the power supply. The voltages of the electronic circuit are very low, but HIGHER VOLTAGES ARE PRESENT IN THE UNIT. [. . . ]