Assessments - 4, GPA: 3.5 ( )

Fabricante : Hoshizaki Arquivo Tamanho: 3.03 mb Arquivo Nome : Língua de Ensino:

3) Remove the front cover of the storage bin. Remove spout B, then remove spout A. See Fig. . 4) Remove the apron panel, then remove the left side panel. 5) Remove the evaporator strap. 6) Remove the evaporator assembly bolts securing the evaporator assembly to the gear motor. Lift the evaporator assembly up slightly. See Fig. 3. 7) Disconnect the wiring from the gear motor, then remove the gear motor bolts. Lift the gear motor from the drain pan. 8) Place the new gear motor in the drain pan. 9) Using the gear motor bolts and washers, secure the gear motor. 0) Connect the gear motor wires. ) Lower the evaporator assembly down and secure it to the gear motor. ) Replace the evaporator strap in its correct position. 3) Replace spout A, spout B, and the front cover of the storage bin in their correct positions. 4) Move the power switch to the "ON" position, then replace the panels in their correct positions. 5) Turn on the power supply, then move the control switch to the "ICE" position to start Gear Motor the automatic icemaking process. Drain Pan Fig. 3 Evaporator Assembly Bolts Evaporator Gear Motor Bolts 55 E. Removal and Replacement of Self-Contained Air-Cooled Condenser IMPORTANT Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repairs or replacement have been made. ) Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF" position. ) Remove the apron panel, then remove the left side panel. 3) Recover the refrigerant and store it in an approved container. 4) Disconnect the drip tray hose from the tee. Remove the four screws securing the drip tray, then remove the drip tray and hose. 5) Remove the four bolts securing the fan motor assembly to the floor of the machine, then move the assembly to the side. 6) Disconnect the condenser inlet and outlet piping. 7) Remove the screws securing the condenser assembly, then remove the assembly. 8) Remove the shroud from the old condenser and attach it to the new condenser. 9) Install the new condenser. 0) Remove the drier, then place the new drier in position. ) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG. ) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas ( 40 PSIG). DO NOT use R-404A as a mixture with pressurized air for leak testing. 3) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge. 4) Replace the fan motor assembly in its correct position. 5) Replace the drip tray and drip tray hose in their correct positions. Secure the hose to the tee. Pour water into the drip tray and check for leaks. 6) Move the power switch to the "ON" position, then replace the panels in their correct positions. 7) Turn on the power supply, then move the control switch to the "ICE" position to start the automatic icemaking process. 56 F. Removal and Replacement of Water-Cooled Condenser IMPORTANT Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made. ) Move the control switch to the "OFF" position, then turn off the power supply. Remove the front and top panels, then move the power switch to the "OFF" position. ) Remove the apron panel, then remove the left side panel. 3) Recover the refrigerant and store it in an approved container. 4) Disconnect the drip tray hose from the tee. Remove the four screws securing the drip tray, then remove the drip tray and hose. 5) Close the condenser water supply line shut-off valve, then open the condenser water supply line drain valve. 6) Attach a compressed air or carbon dioxide supply to the condenser water supply line drain valve. 7) Open the water regulating valve by using a screwdriver to pry up on the spring retainer underneath the spring. While holding the valve open, blow out the condenser using the compressed air or carbon dioxide supply until water stops coming out. 8) Disconnect the condenser water inlet and outlet piping and the refrigeration inlet and outlet piping at the condenser. 9) Remove the old condenser and install the new condenser. 0) Remove the drier, then place the new drier in position. ) Braze all fittings while purging with nitrogen gas flowing at a pressure of 3 to 4 PSIG. ) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas ( 40 PSIG). DO NOT use R-404A as a mixture with pressurized air for leak testing. 3) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge. 4) Close the condenser water supply line drai...

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