Assessments - 2, GPA: 4
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INTRODUCTION This section provides procedures for the checkout and replacement of the various parts used within the blast chiller/freezer. Before replacing any parts, refer to the Troubleshooting Section. It will aid you in determining the cause of the malfunction. 2-2. MAINTENANCE HINTS 1. You may want to use a multimeter to check the electric components. 2. When the manual refers to the circuit being closed, the multimeter should read zero unless otherwise noted. 3. When the manual refers to the circuit being open, the multi- meter reads infinity. 2-3. COMPRESSOR, DRIER, These parts involve manipulating the refrigerant in the system. EXPANSION VALVE, Any removal or adjustments to these parts must be handled by a SIGHT GLASS, AND certified refrigeration expert. CONDENSER FAN 2-4. DISPLAY BOARD AND 1. Remove the electrical power to the unit. AUXILIARY DISPLAY BOARD To avoid electrical shock or property damage, move the power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle. 2. Using a Phillips head screwdriver, remove the two screws securing the front panel, and lower the panel. 3. Pull the connector from the corner of the display board. 4. Using a flathead screwdriver, remove the screws securing the bracket to the panel, and pull the bracket from the panel. 5. Using a flathead screwdriver, push in on the clips on the plastic studs and pull the studs through the bracket. Remove the display board from the bracket. 6. Install the new board in reverse order. 603 2-1 Model BCF-24/65/110, BCM-110 2-5. CONTROL BOARD 1. Remove the electrical power to the unit. To avoid electrical shock or property damage, move the power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle. 2. Using a Phillips head screwdriver, remove the two screws securing the front panel, and lower the panel. 3. Remove the two bolts (under unit) securing the control box. 4. Pull the box from the front of the unit. 5. Remove the four screws securing the control box top and pull the top from the box. 6. Pull the connectors from the control board. 7. Label and pull the wires from the control board. 8. Using a flathead screwdriver, push in on the clips on the plastic studs and pull the studs through the bracket. Remove the control board from the box. 9. Install the new board in reverse order. 2-2 603 Model BCF-24/65/110, BCM-110 2-6. BUZZER 1. Remove the electrical power to the unit. To avoid electrical shock or property damage, move the power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle. 2. Using a Phillips head screwdriver, remove the two screws securing the front panel, and lower the panel. 3. Remove the two bolts (under unit) securing the control box. 4. Pull the box from the front of the unit. 5. Remove the four screws securing the control box top and pull the top from the box. 6. Label and remove the wires to the buzzer. 7. Remove the two screws securing the buzzer to the bracket and remove the buzzer from the bracket. 8. Install new buzzer in reverse order. 2-7. CONTACTOR 1. Remove the electrical power to the unit. To avoid electrical shock or property damage, move the power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle. 2. Follow steps 2 through 5 in the Control Board Section. 3. Using a flathead screwdriver, remove the two screws securing the bracket to the box, and remove the bracket. 4. Label and remove the wires from the contactor. 5. Slide the contactor off the retainer. 6. Install new contactor in reverse order. 603 2-3 Model BCF-24/65/110, BCM-110 2-8. DOOR FRAME HEATER 1. Remove the electrical power to the unit. To avoid electrical shock or property damage, move the power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle. 2. Remove the door to the unit by removing the screws in the lower hinge of the door. 3. Remove the control box from the unit, following steps 2 through 5 in the Control Board Section. 3. Remove the plastic tabs that secures the decorator covers around the door opening, and remove the covers. 4. Peel the heater out of the groove and disconnect the wires (inside control box) to the element, and remove the element from the unit. 5. Install new heater in reverse order and press the plastic tabs in place to secure the decorator covers (tabs included with new heater). 2-9. EVAPORATOR FAN 1. Remove the electrical power to the unit. To avoid electrical shock or property damage, move the power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle. 2. Using a Phillips head screwdriver, remove the two screws securing the fan shroud, and pull out on the shroud. 3. Using a Phillips head screwdriver, remove the three screws securing the fan guard, and remove the guard. 4. Remove the control box from the unit, following steps 2 through 5 in the Control Board Section. 5. Disconnect the wires (inside control box) to the fa...
Este manual também é adequado para os modelos :equipamento de bombagem - BCM-110 (2.52 mb)