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Plumbing in a Simonelli (or not)
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Senior Member

Joined: 23 Nov 2012
Posts: 5
Location: New Zealand
Expertise: Just starting

Posted Fri Nov 23, 2012, 11:51pm
Subject: Plumbing in a Simonelli (or not)

Firstly hello to you all. I am allowed one coffee a day, thus it must be a good one - thats why I am here :)

I have had a couple of machines but after a hiatus I just bought an older Nuova Simonelli Personal 1 in need of a bit of love. Initially I want to set it up without plumbing it in (kitchen being redone) and I wondered if there are any dangers or drawbacks to just using a gravity-fed reservoir before the new kitchen goes in?

Also I would greatly appreciate any information or experience specific to this model anyone can offer - particularly in respect to cleaning regimens.

My thanks in advance, Coelacanth.
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Senior Member
Joined: 27 Jun 2012
Posts: 658
Location: Seattle Area
Expertise: I love coffee

Espresso: ECM Technika IV Profi WT-WC
Grinder: Baratza Forte AP, HG One
Vac Pot: Bunn Trifecta MB
Drip: Moka, Aeropress, Hario V60
Roaster: Behmor 1600
Posted Sat Nov 24, 2012, 1:49am
Subject: Re: Plumbing in a Simonelli (or not)

One a day?? And with a plumbed in NS to boot!

I already asked something similar to this because I was about to buy an NS Mac 2000V and wanted to do the same thing. I think these machines require the positive water pressure of the main plumbing line to work properly. However, if you get it to work with a gravity feed, please let me know and I'll buy that Mac in a heartbeat.
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Senior Member

Joined: 23 Nov 2012
Posts: 5
Location: New Zealand
Expertise: Just starting

Posted Tue Dec 17, 2013, 3:33am
Subject: Re: Plumbing in a Simonelli (or not)

Reviving an old thread here but wanted to share my experiences today in case they are of some use...

I ended up being given a NS MAC2000V 2-group commercial machine, after inquiring about NS parts at a local catering firm. The MAC had been involved in a fire that had started within the machine - probably caused by immense amounts of deposits in the boiler, solid almost around the element, which had heated thread tape on the level indicator to combustion.  The unit had been replaced by insurance and the MAC abandonned in a back room. There were bits missing and it wasnt in good shape, but it was free.  I had it serviced and replaced the pump, a solenoid and seals then did nothing with it for a whole year while I waited for renovations to allow me the space to hook it up.

Today that chance came.  I decided to gravity-feed water to the MAC by running a line from a small header-tank in our attic which normally pressurizes the hot water cylinder.  The plate on the machine recommended no more than 4 Bar pressure going in and I knew the header would not offer this kind of pressure. No minimum was stated, so I figured it was worth a shot as it would save me having to purchase a pressure regulator to drop down from mains. I added a softner to the line just before the machine.

For what it is worth, the header tank sits about 1.5m above the machine and has about .5m of water above the line I installed. Someone who knows the formula will be able to calculate the head pressure.

I also had the task of wiring a 15 amp line through to the meter box and hooking into the mains (dont do this if you are not an electrician hint hint).

After checking for leaks and obvious problems I switched the beast on.  Within moments I was getting flashing lights saying the water level was low and the pump would not activate. There was water in the machine though as I had stored it nearly full. I switched it off and on again, and had the same problem. Guessing that sitting about had done it no good, I pushed a button that would normally start brewing.  The pump hesitated for a moment then sprang into life and all systems began to function normally.

So... I dragged out the Mazzer and some one-year-old beans to see if I could get something resembling espresso from the old girl once she was up to temperature.  After a short play with grind and getting the feel of the machine, we were away!  The old beans weren't making any crema, but amazingly tasted rich and full and better than I am used to from most of the cafés around town.  

More importantly though the MAC2000 is working perfectly under the gravity feed.

Soooo... off out the door at 7am to buy a fresh-roast batch from a nearby outfit and I can set about honing my skill again.  

Hope this helps somewhere along the way :-)
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Joined: 25 Nov 2007
Posts: 8,265
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
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Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Tue Dec 17, 2013, 6:35am
Subject: Re: Plumbing in a Simonelli (or not)

It is good to hear that she is up and running again!
Most of the time, all a plumb in machine requires is a good supply of water to it. If it uses line pressure for pre infusion then it will not work properly but if it turns the pump on to start with, then it should work fine. A lot of members use bottles to feed their machines and a pump from the bottle to the machine is all they need.

If 1 year old stale beans gave you BETTER than local coffee shops brew, UGGGGGG for the local coffee culture!!! :D

In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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