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Resumen del manual
Continuity must be present when the door is closed. Continuity must not be present when the door is open. 4. Reconnect the twelve pin connector to the control board. 5. Gain access to the door switch using steps listed in Removal and Replacement. 6. Disconnect the wires from the door switch. 7. Check continuity between the N.O. and COM. terminals of the switch using an ohmmeter. Continuity must be present when the actuator is engaged. Continuity must not be present when the actuator is released. If continuity is present as described, refer to wiring diagram and check the dispenser wiring harness. If continuity is not present s described, replace the door switch. Removal and Replacement: 1. Disconnect the dispenser from the power source. 2. Remove the hopper assembly from the dispenser. 3. Remove the dispenser from the CDS machine and place it on a flat work surface. 4. Disconnect the door lamp cord from the lamp connector. 5. Remove the two #8-32 screws securing the door hinge to the dispenser housing. 6. Carefully pull the door forward until the door support arms come completely out of the dispenser housing and set aside. 7. Remove the six #8-32 truss head screws securing the rear cover to the dispenser housing. 8. Remove the six #8-32 round head screws securing the front of the housing to the side panels. 9. Remove the six #8-32 truss head screws securing the back of the housing to the side panels. 10. Carefully lift and spread the housing to remove it from the rest of the dispenser. 11. Remove the door switch actuator from the nylon standoff. 12. Noting the orientation of the door switch, remove the two #6-32 screws and the nylon standoff securing the switch mounting bracket to the dispenser housing. Remove the switch. 13. Attach the new door switch taking care to orient the switch correctly in the mounting bracket and secure in place with two #6-32 screws and nylon standoff. 14. Reconnect the wires to the door switch. Refer to Fig. 29. 15. Install the door switch actuator orienting the notched side against the right side housing panel. Refer to Fig. 28. 16. Reassemble the dispenser top housing, rear panel, and door assembly to the dispenser. ORA to Control Board (J1-9) GRN to Control Board (J1-8) P1908 FIG. 29 DOOR SWITCH TERMINALS 29793 061599 30 SERVICE (cont.) PRESSURE REGULATOR and NEEDLE VALVE FIG. 30 PRESSURE REGULATOR P1935 and NEEDLE VALVE Location: The pressure regulator and needle valve are located inside the rear panel at the bottom of the dispenser. Adjustments: The water pressure regulator is preset at the factory to produce 15 psi (103 kPa) of water pressure at the regulator outlet with inlet pressures ranging from 20 psi to 90 psi (138 to 620 kPa). No field adjustments of the pressure regulator should ever be necessary. The needle valve is preset at the factory to dispense 1 fluid ounce of water per second. The dispenser is designed to accommodate various product mix ratios by adjusting the product dispense rate (see Initial Setup). Should a readjustment of the water dispense rate become necessary, proceed as follows: 1. Disconnect the dispenser from the power source. 2. Remove the six #8-32 screws securing the rear panel to the dispenser housing. 3. Turn the needle valve adjustment screw counterclockwise to increase the water flow rate, and clockwise to decrease the water flow rate. Removal and Replacement: Pressure Regulator 1. Disconnect the dispenser from the power source and the water supply. 2. Remove the six #8-32 screws securing the rear panel to the dispenser housing. 3. Disconnect the .25" copper tube from the outlet of the pressure regulator. 4. Loosen the nut securing the bulkhead fitting to the dispenser. 5. Remove the bulkhead fitting from the inlet to the pressure regulator. 6. Remove the pressure regulator assembly. 7. Attach the regulator to the bulkhead fitting making sure that the copper bushing is seated properly in the regulator and tighten securely. 8. Tighten the nut securing the bulkhead fitting to the dispenser housing. 9. Attach the .25" copper tube to the regulator assembly and tighten securely. 10. Connect the dispenser to the water source and check for leaks. Tighten any leaking connections before installing rear panel. Removal and Replacement: Needle Valve 1. Disconnect the dispenser from the power source and the water supply. 2. Remove the six #8-32 screws securing the rear panel to the dispenser housing. 3. Disconnect the .25" copper tube from the inlet fitting on the needle valve. 4. Disconnect the water outlet from the solenoid valve. 5. Remove the solenoid valve and needle valve as described in section-Dispense Solenoid Valve. 6. Remove the needle valve assembly. Remove the fitting from the inlet port of the needle valve. 7. Install the fitting removed from the old needle valve onto the new needle valve using pipe thread sealant (BOM #M2526.0000). 8. Attach the needle valve to the fitting on the dispense solenoid valve using pipe thread sealant (BOM #M25...