User manual SCOTSMAN FM2400

[. . . ] FM2400 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 FM2400 is a modular ice system that fits a variety of Scotsman ice storage bins. 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 Installation For the Installer Specifications . 16 Service Diagnosis Removal and Replacement Reservoir and Bin Controls . [. . . ] Reconnect power. June, 1989 Page 18 FM2400 MAINTENANCE AND CLEANING: Auger 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 ALLEN auger becoming coated with these minerals, SCREWS requiring a more frequent removal than twice per year. If in doubt about the condition of the /////////////WARNING/////////////// evaporator and auger, the auger can be The auger has sharp removed so the parts can be inspected. Note: Water filters can filter out suspended //////////////////////////////////////////// solids, but not dissolved solids. "Soft" water BREAKER & BEARING & may not be the complete answer. Check with AUGER a water treatment specialist regarding water ASSEMBLY treatment. For more information on removal of these parts, see REMOVAL AND REPLACEMENT. ///////////////////////////WARNING/////////////////////////////// Shut off electrical power and water supply. Drain the evaporator by pulling down and ////////////////////////////////////////////////////////////////////////// uncaping the evaporator drain tube. Remove 3 hex studs holding ice chute auger to dry: if the auger is not bright and cover to ice chute, and remove cover. evaporator. June, 1989 Page 19 FM2400 SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: NOTHING OPERATES 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. Check the low pressure cut out, if closed, go to E; if it is open, it could be due to: · Low refrigerant charge · The auger not turning · Restricted system · TXV not opening 1. Check the low side pressure, the low pressure cut out opens at pressure below 4 psig. Check if the auger is turning, if it is not, remove the gearbox and: Check for internal damage, repair and replace in the machine. Check for low charge, add some refrigerant, if the unit will operate, (normal low side pressure being about 30 psig) stop and look for a leak, repair, replace the drier, evacuate, and weigh in the nameplate charge. If, with added charge, the unit does not operate: Check for a restricted system, replace the drier, evacuate, and weigh in a nameplate charge. Check for a Thermostatic Expansion Valve that does not open, if defective, replace it. Check the high pressure cut out, if closed, go to F; if open check: 1. The pressure control opens at 450 psig. Check the high side pressure, reset the control, and observe: on water cooled, that water soon begins to flow from the condenser drain; or, on air cooled, that the fan is forcing air through the condenser. If the unit trips out on pressures below 450 psig, replace the control. If the pressures rise above the trip out point, and the unit shuts down: a. [. . . ] Note: If the gearcase cover or the gearmotor was replaced, the replacement part MAY HAVE BEEN shipped with a certain number of shims. The number of shims used must match the number written on the gearcase cover. If there is no number written on the cover, and no shims were received with the new part, do not use any shims. Removing Condenser Fan Motor Assembly /////////////////////////////WARNING////////////////////////// Disconnect all electrical power to the machine before begining. [. . . ]