Hamworthy 563216020 Installation, Commissioning And Servicing Instructions
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HAMWORTHY HEATING LTD17CHESIL-ELECTRONIC 500001181/K10.0 SERVICING AND REPLACEMENT OF COMPONENTSNote! When servicing or replacing components electrically isolate the unit and close the system and expansionvessel isolating valves. The unit should also be isolated from the pressure alarm circuits.When remaking screwed connections use a thread sealant.The cover on the unit is secured by one screw at the lower edge of the front panel only.10.1 Hamworthy Heating Recommended SparesPart Part N°Pump Assembly (Single Pump Unit) 530905053Pump Assembly (Twin Pump Unit) 530905054Pressure Sensor 532496005Control Box Assembly (Wall Mount Unit) 533901788Main Control PCB Single Pump Unit 533901784Main Control PCB Twin Pump (Floor Standing Unit) 533901785LCD Display PCB 533901786Float Switch 531203006Float Valve Assembly 531911038Non-return valve cartridge 531911040NOTE! For any service/replacement parts the unit serial No. (on the Data Plate inside the unit) MUST bequoted. For service or spares contacts please refer to the inside front cover of this guide.10.2 Pump Removal (part n° 530905053 & 530905054 )1) Isolate unit from electrical & water supplies as well as connecting circuitry.2) Isolate water by turning screw in ball valve see fig 18 below.2) Disconnect the tube from the last grey elbow fitting using the blue tool provided. Take care to line up thetool correctly before pushing the tool into the fitting to release the pipe (see fig 19).3) Disconnect the outlet pipe from the pump. Remove the quick release clip first (see fig 20).4) Disconnect the wiring on the mains terminal (see fig A1).5) The pump assembly including the mounting plate can now be removed from the unit.6) When the pump assembly has been removed the pump can then be removed from the assembly.Figure 19 Figure 20Figure 1810.2.1 Pump FittingPump fitting for each unit is basically the reverse of pump removal.Care should be taken not to over tighten the 2 pump mounting screws as this can shear the welded thread. Oncere-fitted and connected the pump needs to be bled. Instructions of this can be found in section 7.6. |
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