Should I citric bath my scaled boiler?

Koffee_Kosmo

colinwen wrote:

Another problem just happened (again....). I believe this time is nothing to do with hard core stuff but might difficult to find the part. When I do the descaling cleaning part, I turn on/off hot water tap. Then suddenly the knob came off. After a close look, the end tip of the middle of valve broken. I pull it apart and seems I can replace the middle metal thingy, however, I can not find a part no on the Giotto's part list. I wonder if I really need to buy the whole tap valve or I can source a part? Any advice? Thanks.

You should be able to get just the inside section So I suggest a call to coffeeparts for availability See this link and view part # 617123 http://www.coffeeparts.com.au/ecm/ecm-spare-parts-5 KK

colinwen

Thanks KK and AM again. I do feel like to follow AM's great advice, I know my limitation after this experience. I wont do anything to do with the electricity without knowing what I am doing. About the theromostat, I really dont know what happen. I was lever up the water through the group head, then I go back to my desk to read some other coffee information. Then the machine start to heat up. I assume it comes from some water/steam pass through the anti-vacuum breaker (mine is a bit faulty). The water touch the thermostat then the safety cut-off. Without realizing its a reset function, I was thinking something wrong with the circuit borad (luckily its not). Afterward I just keep doing the cleaning and descaling flushing. with some basic dissemble the group head. Really appreciate people's advice and information here. Especially AM emphasizing the the safety in any case I eletrocute myself. I hope my machine will come to working condition very soon. (thanks KK for the part number which I missed from the diagram) Colin

colinwen

Just quick update what happen to the broken part. I have sent the email to coffeeparts and ECA. Answer from ECA is I have to buy the whole valve, it will cost me 80. I feel its kind of waste natural resource (and I am cheap too >_< ). I brought the broken part to the workshop in our uni to discuss the possibility of fixing it. End up with a conclusion to cut a groove a bit lower if the space missed is acceptable. Since I always have to turn several round to turn on the tap water and I also saw an extra washer inside. I assume it will be fine to loss 2mm length. The fixed part photo is attached. I made a double shot cappuccino for return the favour. Although he said he is a instant coffee drinker, he still the tell the cappuccino I made is better than the shop in uni. I am glad both of us are happy.^^ Now the fixed part has put back to tapwater valve. Everything is slowly getting ready. Now I just need to flush the shower head few times more with clean water. Because I feel I can still smell the rusted smell (like a old tap water). Not sure if it comes from the descaling process. Colin

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