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Maintenance and Service
Sirrus Rothwell R995 Antique Shower Water is not hot enough
The pressure from a shower is good but the temperature is not very hot. This type of showers don't have a thermostat adjustment hence the whole thermostat will need to be replaced. To replace the cartridge isolate the water supply to the shower. The part number for the cartridge is Sirrus Thermostat &Piston SK1500-3 and it can be ordered from here.
Shower valve manual PDF
Hot Water Cylinders
Megaflow Safety discharge pipe is dripping
Megaflow unvented cylinder has water intermittently dripping or leaking from the safety discharge pipe. The leak could be from a Temperature and pressure relief valve (TPRV set at 6 bar) or from a Pressure relief valve (PRV set at 8 bar). First need to determine from which valve is dripping. Undo the outlet nuts on both valve and check which outlet is wet. If the TPRV is wet then the cylinder need servicing and a bubble top to be recharged. If the PRV is wet then most likely its need replacement or cleaning. For replacement you need to order only a cartridge. The apart number is 95605870. The cartridge can be ordered from here.
Potterton Suprima 40L - lockout twice a day
Boiler Potterton Suprima 40L goes to lock out several times a day. The central heating system was very dirty and a powerflush has been done. The powerflush didn't help much and the boiler continued to lock out. Next we need to check a thermistor, overheat stat and PCB. The thermistor has a good readings and an overheat stat does make a circuit. The PCB has a burning marks on it. Its faulty and need replacement. The part number for PCB is 5111603. The PCB can be ordered from here.
Aqualisa Aquavalve 609 thermostatic
Dripping water from a shower rose. Water is constantly dripping from the shower head. A thermostatic cartridge has worn out and need replacement. Isolate a cold and hot water supply before replacing the cartridge. Pull off the on-off nahdle and unscrew 4 screws holding the cartridge. Replace the cartridge with a new one. The part number is 022801. Estimate price is £120. You can order this part from here.
Aqualisa Aquavalve 409 manual shower valve is dripping
The water is constantly dripping from the front of the shower valve and running on the tiles surface into a shower tray.
Remove the front handle and unscrew 4 screws to remove a temperature regulator. If water is leaking from the place where the cartridge connects a valve body then you need to isolate a cold and hot water supply to a shower and undo 4 screws those securing the cartridge. Remove the cartridge and replace or seal around a rubber washer. Then put everything back together the leak should stop.
If you see that the water is leaking from the middle of the cartridge where blue and black parts meet each other then the whole cartridge has to be replaced. The cartridge part number is 022804 and it can be ordered from here.
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