User manual SCOTSMAN FM1200

[. . . ] FM1200 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 FM1200 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 . 4 Two units on one bin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 For the Plumber . [. . . ] The filter may be cleaned or replaced. Step 3: Pull fans & bracket up and off locating pins. Step 1: Remove top panel. B. Clean the condenser: the condenser may appear to be clean on the surface, but it can still be clogged internally. Check with a flash light from the front to see if light can be seen though the condenser fins. Reverse to reassemble. Step 2: Remove two screws and Step 4: Clean the condenser. October, 1991 Page 18 FM1200 MAINTENANCE AND CLEANING: Auger In some areas, the water supply to the ice maker will contain a high concentration of minerals, and that will result in an evaporator ALLEN and auger becoming coated with these SCREWS minerals, requiring a more frequent removal /////////////WARNING/////////////// The auger has sharp than twice per year. condition of the evaporator and auger, the auger can be removed so the parts can be //////////////////////////////////////////// inspected. Note: Water filters can filter out suspended BREAKER & BEARING & solids, but not dissolved solids. Check with ASSEMBLY a water treatment specialist regarding water treatment. For more information on removal of these parts, see REMOVAL AND REPLACEMENT. Drain the evaporator by lowering and Switch off electrical power, and turn off the uncapping the evaporator drain hose. ////////////////////////////////////////////////////////////////////////// After the auger has been removed, allow the 1. To remove the auger, remove the front and auger to dry: if the auger is not bright and top panels. Remove 3 hex studs holding ice chute Clean the auger and evaporator as required. Remove 4 allen screws holding breaker to evaporator. October, 1991 Page 19 FM1200 SERVICE DIAGNOSIS: Condition - No Ice Being Produced STATUS: NOTHING OPERATES A. Check: The 3 reset switches, (spout switch, or on prior models the 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. [. . . ] Note: The gearcase cover, output gear, bearings and output shaft are a 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. The oil quantity is 14 fluid ounces, do not overfill. Note: The gears and bearings are available only as pressed together sets. [. . . ]