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Hersteller: Ice-O-Matic Dateigröße: 3.3 mb Dateiname: Unterrichtssprache:

7. Drain the evaporator by lowering and uncapping the evaporator drain hose. 8. Pull up to remove the auger. After the auger has been removed, allow the auger to dry: if the auger is not bright and shinny, it must be cleaned. 9. Clean the auger and evaporator as required. DO NOT HONE THE EVAPORATOR. 10. Replace the water seal. 11. Reverse to reassemble. Text Box: Breaker, Bearing and Auger Assembly Text Box: Breaker Cover Text Box: Ice Sweep Text Box: Allen Screws Symptom Possible Cause Probable Correction No ice is made nothing operates. •Unit off due to no power •Restore Power •Unit off due to master switch in OFF •Switch master Switch to ON position •Unit off due to low water level •Check water supply, filter strainer, float valve. Correct water supply. •Unit off due to ice level sensors. •Check/clean ice level sensors. (Photo Eyes ) blocked. •Unit off due to scale on water level •Clean water level sensor. sensor. •Unit off due to high pressure control open. •Check for water interruption (water cooled) or fan motor failure. •Auger motor hums but does not turn. •Auger can’t turn. Circuit board has not yet shut it down. •Unit is shut down. •Circuit board has shut ice machine down due to high auger motor amp draw. Check for cause of high amp draw, including bearings, gear motor condition and scale on auger and in evaporator. •Low pressure control open. •Auger not turning due to: motor failure; auger relay failure on circuit board; or or gears stripped. Check drive train. •TXV restricted or not metering. Check bulb temperature. •Lack of refrigerant, check for leak. •Check for a restricted system. •No power to circuit board. •Check harness •Hi or low pressure cut outs open. •Circuit board gear motor relay will •Check/replace board. not close. No ice, auger motor is turning. •Compressor contactor coil is open. •Check/replace contactor. •Compressor will not start. •Check start capacitor. •Check start relay. •Check compressor windings. Symptom Possible Cause Probable Correction Unit makes ice, but very slowly •High discharge pressure because •Clean filter and condenser. of a dirty condenser. •Low capacity because the auger and •Clean the water system. evaporator are coated with mineral scale. •Low suction pressure due to low •Locate leak. Recover the refrigerant charge. refrigerant, repair leak, replace drier, evacuate and weigh in the nameplate charge. Water leak. •Drain plugged up. •Clean out drain. •Tubing cracked •Replace tubing. •Condensation on drain tubing. •Insulate tubing. •Water hose off •Reattach hose. •Reservoir cover off. •Return cover to reservoir. •Reservoir cracked. •Replace reservoir. •Evaporator water seal leaks. •Check base of evaporator and drip pan. If the seal leaks, shut off the water, remove the auger and replace the water seal. Check the gear motor for water infiltration. Excessive water use. •Water cooled model, water regulating •Adjust to 245 PSIG discharge valve not adjusted properly. pressure. •Reservoir float valve leaks thru. •Replace float valve or seat. •Water cooled model, overcharged •Recover and weigh refrigerant. with refrigerant. Weigh in correct charge. •Water cooled model, condenser coated •Acid clean the water cooled with minerals. condenser. Excessive ice meltage. •Bin drain clogged •Clean out bin drain. •Improper installation of drains, they are •Drains must be separate. connected. •Poor fit between bin door and door frame. •Adjust or replace. Machine makes too much noise. •Evaporator coated internally with minerals. •Clean with ice machine cleaner. •Motor bearing dry. •Oil or replace motor. The Control System consists of: .Control Board .Water Sensors .Ice Sensors .High Pressure Cut Out .Low Pressure Cut Out If the unit is OFF, check the control board: 1. Is the Power OK light on? If not check power to the unit. If it has power, and the Power OK light is not on, check the high pressure and low pressure cut outs. If they are both closed, replace the board. If the POWER OK light is ON, go to the next step. 2. Is the Water OK light on? If it is, go to the next step. If not, check the water level in the reservoir. If there is water in the reservoir, check that the water sensor is plugged in. To check the water sensor: a. Unplug the water sensor. b. Pull the water sensor from the reservoir. c. Place one ohmmeter lead on the sensor’s plug and the other on the sensor’s tip. The meter should show nearly zero (0) resistance. If it reads infinite resistance, check the tip for corrosion. If it is clean and still reads open, replace the sensor. OR, connect a copper wire to the wire where the water sensor plugs into and place the other end in the water. The WATER OK should go ON. If it does not, replace the board. 3. Ice sensor Check. Is the BIN FULL light OFF? If it is OFF and the SERVICE light is OFF and the unit is not running, replace the control board. a. If it is OFF and the auger motor is running but the compressor is not, check the compressor contactor coil. b. If it is ON,...

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