Hamworthy 563216020 Installation, Commissioning And Servicing Instructions
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HAMWORTHY HEATING LTD18CHESIL-ELECTRONIC 500001181/K10.3 Replacement Of Pressure Sensor (Part No.532496005)The pressure sensor is assembled into the outlet pipe work from the pump.1) Isolate the unit from the electrical, water supply & connecting circuitry.2) Unscrew the Black cable socket from the sensor and pull backwards to disconnect (Fig 21).3) Unscrew the sensor from it’s soldered boss. (Fig 22)4) Apply a small amount of WRAS approved sealant to the thread of the replacement sensor.5) Screw the replacement sensor into the boss.10.4 Replacement Of Control Box Assembly On Wall Mount Unit (Part No. 533901788)To remove the control box assembled to the door of the unit.1) Ensure the unit has been isolated from the 230V / 50Hz mains supply & connecting circuitry.2) Unscrew the screw at the base of the sheet metal front cover of the unit and lift off the cover from the unit.3) Unscrew the 4 screws shown in figure 23 and remove the lid of the box.4) Disconnect the terminal connections to the PCB.5) Loosen the cable gland nuts of the box and withdraw the terminal ends of the cables through the glands.6) Remove the M3 nuts behind the hinged door panel to unfix the control box to the door.7) Replace the control box and secure to the door using the nuts.8) Open the replacement box by removing the lid.9) Loosen the cable gland nuts of the replacement box and feed the ends of the cables through the glandsand connect the cables to the correct terminal of the PCB. Refer to the wiring diagram in Appendix A1.10) Reassemble the lid of the box , reconnect the electrical supply to the unit and replace the sheet metal frontcover on the unit.Figure 22 - Location Of SensorFigure 21 - Pressure SensorFigure 23 - Control Box Figure 24 - Controller Terminals |
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