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Add brew pressure gauge to older Expobar Office Lever?
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RNAV
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Joined: 19 Aug 2012
Posts: 24
Location: Fayette'nam, NC
Expertise: I like coffee

Espresso: Expobar Office Lever
Posted Mon Dec 17, 2012, 4:49pm
Subject: Add brew pressure gauge to older Expobar Office Lever?
 

I've got an '08 Expobar Office Lever which does not have a brew pressure gauge (only a boiler pressure gauge).  I noticed the newer Levers have a brew pressure gauge.  Is it possible to retrofit this onto my older Lever?  

Thanks in advance!
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SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 506
Location: Canada
Expertise: Professional

Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Mon Dec 17, 2012, 5:25pm
Subject: Re: Add brew pressure gauge to older Expobar Office Lever?
 

When I saw the word "Lever" I pictured a very different machine.  Apparently I don't know what a lever machine is, if this Expobar Office Lever is what coffeegeek is referring to as a "lever machine"..
But anyway, yes. That is what I would call an E61 type vertical boiler HE machine.  The choice for adding a brew-pressure gauge comes down to what holes you want to drill, and where.
You could drill a small hole for an indicator light to show when the element is on and replace the boiler pressure gauge with the brew pressure gauge.  You could go without an indicator light and do the same thing, with no indication of boiler pressure.  You could drill a second big hole to mount a second gauge in and go with two separate gauges. Or, you could replace the existing boiler gauge with a dual-gauge, this is particularly good if you find a gauge to fit the existing hole.
When teeing in the line between your new gauge and the brew-circuit, the closer you are to the Heat Exchanger inlet and the further from the pump, the better.  The vibration pump will make the reading unstable closer to the pump.
It should be possible using fittings and flexible copper tubing common to the expobar machines born with the second gauge.

Alternatively, it is possible that a machine with the two gauges is available used for barely more than you can sell your single-gauge one for.  Might be better than customizing a machine.  Many people think customizations ruin a machine, even if they work.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,947
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Mon Dec 17, 2012, 7:42pm
Subject: Re: Add brew pressure gauge to older Expobar Office Lever?
 

The short answer is if it floats your boat to have the brew gauge, yes you can add it and no it isn't a big deal.

 
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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