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Thread: Where to get a Gaggia Classic fully serviced in Melbourne

  1. #1
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    Where to get a Gaggia Classic fully serviced in Melbourne

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Ive recently acquired an eight year old Gaggia Classic.

    The machine has obviously seen some use and Id like to take it to a specialist to check temperature, pressure, look at the boiler etc.

    Which of the site sponsors would do something like this? I live in Bayside, Melbourne.

  2. #2
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    Re: Where to get a Gaggia Classic fully serviced in Melbourne


    These are pretty easy machines to work on and parts are commonly available. Assuming you dont feel capable of doing it yourself (since you asked for a specialist) I imagine many of the sponsors that work with espresso machines can help. Other CSers have recommended me to 9Bar espresso services. Ive never used them, but might be worth calling them to get an estimate for a service as others speak highly of them and they are in Abbotsford.

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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Thanks Who! I saw 9Bar before posting (top of the sponsors list) but they are in Abbotsford and its a bit of a drive for me.

    Id like to take it to a professional because I would like to know that its been set up right and there isnt anything too wrong with it. The poor thing left the factory a long time ago and I suspect it may have forgotten some of the basics!


  4. #4
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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Apart from being a bit blockage prone between boiler and the shower screen (easy user fix) with few exceptions, Gaggias dont forget.
    If it is faulty fix it sure but if you cant fault it, just use it and save the brass for a decent grinder.

  5. #5
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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Im a bit worried about:
    a. Temperature, the coffee is too hot to drink when it pours, while a friends much newer GC doesnt make such hot coffee. *The coffee from mine tastes a little bland and I get nicer flavours when I use the Presso.
    b. Pressure, surely the OPV would need some adjustment after 8 years?
    c. Surely the boiler is likely to be quite corroded by now?

  6. #6
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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    My classic turns 18 in april, so yours is a relative youngster.
    The temp should be easy enough to check if you have a decent thermometer. The thermostat in gaggias has a very wide variation, certainly in mine (but mine now has PID temp control). You may want to temperature surf even if it is working correctly. If you can get a thermometer, we can compare readings and confirm if you have a problem.

    The OPV wont trigger if grind/ dose/tamp are good. Its main purpose is safety. Having said that, if opv is well tuned it makes the machine more forgiving. While it is unlikely to move out of adjustment, the factory setting can be too high. I found it easy to adjust, but a professional with the right equipment could do in 15 mins what took me an hour and result would be more accurate. Id say this step is optional.

    Gaggia boilers are prone to corrosion, but mine still had the original. If it isnt leaking, corrosion probably isnt too far advanced. Scale build up is another issue. Im not sure, but dont think it is a major problem in melbourne. You should definitely descale it though. If you are worried about the boiler condition, a new one is only $63.50 with seal (parts only), which may be cheaper than paying someone to dismantle, clean and reassemble yours.

    There is a (non sponsor) place in hampton that services espresso machines, dont know how good they are. Will pm you.

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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Ah! Im a bit confused about the OPV then, I meant whatever the adjustment for the pressure is. Ive gone back and looked at the original thread I read on pressure adjustment and youre right, the adjustment is INSIDE the OPV.

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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    What happens when you start to pull a shot its that the pump engages and builds pressure in the portafilter. With no coffee, this is low pressure and goes pretty much straight through.
    With too fine a grind or heavy tamp, the pressure builds to a level that hardly anything comes out the p/f and most goes through the opv back to the tank.
    With ideal grind/dose/tamp, all, or almost all, water goes into the p/f, and 60 ml comes out the spouts (assuming a double)

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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Ok, checked temperature. I inserted a thermocouple through one of the portafilter exit holes and let everything temp stabilise for 25 mins. It read about 88 celsius. I then ran water through the group with an empty double filter basket. It rose to 96 celsius and then dropped back to 94 over the next 2-3 secs. My temps might be out by 1 degree as I think this thermocouple/PID combination is slightly out and I reckon this is close enough for you to work with.

    My previous experience of the gaggia stock thermostat is that it varies from 99C to 113C, so you can expect your temps to be higher.

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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Thank you Who! mine may not be high at all then.

    I performed the pressure mod yesterday so Im going to experiment with the machine for a little longer and see if I can get more out of it.

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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Good luck, you should be able to get excellent results with practice. The pressure mod can take two or three tries to get right, but if you have measured flows with a blind filter you are probably close to the right pressure.
    Generally, using a double filter basket makes it easier to pull consistent shots, so you should probably stick with that for now even if you only need a single, just let half of it pour to waste.
    One other thing that occurred to me - have you cleaned and backflushed? If not, do so as it can make a huge difference.

  12. #12
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    Re: Where to get a Gaggia Classic fully serviced in Melbourne

    Who, unfortunately I cant be 100% sure of the result of the pressure mod as mine has the Invensys pump and there are no confirmed figures for the flow at the 9 bar setting. I found a post here, and one at another site that implied that 130ml per 30 second was the right figure for this pump, not the 100 of the newer pumps. Ive set it up to 130ml and will run it at that for a while. It was originally set to 110.

    Ive got a probe in the same configuration as you described in the machine today and Ill be running shots throughout the day to see how to best stabilise the temperature based on the light on/off time. I reckon its going to take a while as I want the darned thing to be temperature stable before each shot.

    In the meantime the Presso is happy to be back in regular use!



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