User manual SCOTSMAN FM2400R

[. . . ] FM2400R 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 FM2400R is a remote condenser modular ice system. It features: front service for the freezer, gearmotor, control box, water reservoir, and bin control; 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 . 26 Removal and Replacement Water Reservoir & Bin Controls . [. . . ] 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 breaker bearing by: · removing the ice chute cover · unscrewing the ice sweep · removing the water shed · using a spanner wrench and unscrewing the breaker cover (left hand thread) · unscrewing the auger stud SPANNER WRENCH BREAKER COVER December, 1988 Page 22 FM2400R MAINTENANCE AND CLEANING In some areas the water supply to the icemaker will have a great deal of minerals in it, and that will result in ann 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. Check with a water treatment specialist regarding water treatment For more information on removal and replacement of these parts, see REMOVAL AND REPLACEMENT. To remove the auger, remove the front and top panels. 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. 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 Note: Water filters can filter out suspended solids, but not dissolved solids. "Soft" water December, 1988 Page 23 FM2400R 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 2 reset switches (circuit board and high pressure): depress and release each 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 450 psig, replace the switch. If the pressures rise above the trip out point, and the unit shuts down: a. If the air flow is poor because of the installation, advise the user that the unit should be moved, or the air around it kept cooler. [. . . ] All liquid R-502 must be weighed into the receiver through the "front seated" king valve. FRONT SEATED KING VALVE SERVICE PORT CHARGING CYLINDER December, 1988 Page 34 FM2400R 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. Do not touch anything but the tester while the unit is being checked out. Make all connections to the circuit board with the ELECTRICAL POWER OFF. [. . . ]