User manual BOSCH KAD 62S51TI/04

[. . . ] Refrigerant Type Type Circuit Fuse Charge: Ampacity Size R-404A Flake same same same same same Nugget same same same same same Air Water Water Air Water Water Air Water Water Air Water Water 19. 5 18. 3 18. 3 10. 1 9. 5 9. 5 19. 5 18. 3 18. 3 10. 1 9. 5 9. 5 30 30 30 15 15 15 30 30 30 15 15 15 24 ounces 20 ounces 19 ounces 24 ounces 20 ounces 19 ounces 24 ounces 20 ounces 19 ounces 24 ounces 20 ounces 20 ounces 27" x 21" x 24" same same same same same same same same same same same Note: Minimum Circuit Ampacity is used to determine wire size and type per national electric code. January 2005 Page 2 SAMPLE BIN AND MACHINE COMBINATIONS NME654 & KAD 62S51TI/04 KAD 62S51TI/04 ON BH550* NME654 ON BH800* The Nameplate is located on the back of the machine. A Serial Number Plate is located inside the cabinet, behind the front panel. KAD 62S51TI/04 ON BH900* *Bin Top Kit Required January 2000 Page 3 NME654 & KAD 62S51TI/04 FOR THE INSTALLER Location: Install the machine be installed in a location where it has enough space around it to be accessible for service. A minimum of 6" must be allowed at the back for air circulation on air cooled models. Try to avoid hot, dirty and crowded locations. [. . . ] The air flow on this model is from front to back, so the inside of the machine will have to be available to clean the air cooled condenser. Use a vacuum cleaner or coil cleaner if needed. Disconnect electrical power, and remove the filter. 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. NME654 & KAD 62S51TI/04 Step 2: Remove the top portion of the fan shroud. Step 3: Clean the condenser. Step 1: Remove the top panel. January 2000 Page 19 NME654 & KAD 62S51TI/04 BEARING MAINTENANCE The bearing in the breaker should also be checked at least two times per year. Check the bearing by: ·unscrewing the auger stud Auger Stud ·removing the ice chute cover Chute Cover Cap Screw ·unscrewing the ice sweep Ice Sweep Inspect the bearing. There should be plenty of grease in sight. If grease is needed the bearing and breaker should be removed to check the action of the bearing. To remove the breaker remove the lower ice chute then take out all four allen head cap screws and pull the breaker off the auger and evaporator. Circuit board has not yet shut unit down. Circuit board has shut ice machine down due to high auger motor amp draw. Check for cause of high amp draw, including bearings, gearmotor condition and scale on auger and in evaporator. Auger not turning due to: motor failure; auger relay failure on circuit board; or gears stripped. Check for a restricted system Low pressure control open No power to circuit board. Check harness Hi or low pressure cut outs open Circuit Board gear motor relay will not Check, replace board close Water level or ice level sensor failed. No ice, auger motor is turning Compressor contactor coil is open Compressor will not start Check, replace sensor Check/replace contactor Check start capacitor. Check start relay Check compressor windings Circuit board compressor relay will not close. Check, replace board High discharge pressure because of a Clean the air filter and condenser. dirty condenser Low capacity because the auger and evaporator are coated with mineral scale Low suction pressure due to low refrigerant charge January 2000 Page 22 Clean the water system Locate leak. Recover refrigerant, repair leak, replace dryer, evacuate and weigh in the nameplate charge SERVICE DIAGNOSIS Symptom Water Leak Possible Cause Drain plugged up Tubing cracked Condensation on drain tubing Hose off Reservoir cover off Reservoir cracked Evaporator water seal leaks NME654 & KAD 62S51TI/04 Probable Correction Clean out drain Replace tubing Insulate tubing Reattach hose Return cover to reservoir Replace reservoir Check base of evaporator & drip pan. If the seal leaks, shut off the water, remove the auger, replace the water seal. [. . . ] Bench test the gearmotor, check for oil leaks, noise, and amp draw. GEAR CASE January 2000 Page 30 REFRIGERATION SYSTEM SERVICE General: This ice machine uses R-404A refrigerant and polyolester oil. Do NOT use mineral oil in this refrigeration system. NME654 & KAD 62S51TI/04 Instructions for Liquid Charging R-404A In preparation for charging, the low side hose should have a sight glass, and/or a restricting device (such as a "Charge Faster") installed in it for ·When the system is serviced, a special liquid metering liquid into the low side of the system. After a thorough evacuation shut off the manifold replacement compressors. ·R-404A is not compatible with mineral oil so 2. [. . . ]