Hamworthy 563216020 Installation, Commissioning And Servicing Instructions
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HAMWORTHY HEATING LTD16CHESIL-ELECTRONIC 500001181/K9.0 SERVICING SCHEDULEThe following is a recommended servicing schedule for the Chesil unit and expansion vessel. If remedial action isrequired, refer to section 10: SERVICING AND REPLACEMENT OF COMPONENTS. If in doubt consultHamworthy Heating.9.1 6 Monthly1) Check the expansion vessel charge pressure, as described in section 7.4. A significant drop in chargepressure could be due to a faulty vessel diaphragm; replacement of diaphragm should be considered. Seesection 10.9.2) Check the value for PUMP KICK. Adjust if necessary then briefly reduce the system pressure to check for rotorseizure. This could occur if the pump is not run for extended periods. This can be accomplished by slightlyopening the expansion vessel drain valve to initiate a leak.Note! Ensure that the drain valve is closed after this operation.9.2 12 Monthly1) Check the ball float valve diaphragm seat for integrity and replace if necessary. Also check the plastic float forsoundness.2) Check the expansion vessel for signs of external corrosion. If any deterioration is observed then it isrecommended that the frequency of inspection be increased.3) Check the operation of the safety circuits if utilised.4) Check the V2 setting and reset if this is close to the maximum limit.Note: a high reading accumulated over a short period of time could indicate a system leak and should beinvestigated.9.3 4 Yearly1) Remove the expansion vessel diaphragm as described in section 10.9 and inspect for wear/ageing.Inspect the internal surface of the vessel for corrosion.Significant corrosion can lead to failure of the vessel; replacement of the entire vessel should be considered.If necessary replace the diaphragm as described in section 10.9. |
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