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old type astoria 2 group
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alantelfer
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Joined: 3 Sep 2012
Posts: 9
Location: uk
Expertise: Professional

Posted Tue Jul 9, 2013, 3:25pm
Subject: old type astoria 2 group
 

have customer with old type Astoria 2 group .solenoid coil on right hand group burns out after a few weeks.
no prob with limescale etc. could it be problem with board or the way they backflush?
not come across this prob on any machine before.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 8,042
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 Wed Jul 10, 2013, 5:14am
Subject: Re: old type astoria 2 group
 

It is very hard to trouble shoot across the ocean. Check that the coil is getting the proper voltage, if it is low voltage you may be still operating but drawing excessive current, thus heating it up and causing it to burn out.

 
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alantelfer
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Joined: 3 Sep 2012
Posts: 9
Location: uk
Expertise: Professional

Posted Wed Jul 10, 2013, 2:40pm
Subject: Re: old type astoria 2 group
 

many thanks will check it out
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alantelfer
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Joined: 3 Sep 2012
Posts: 9
Location: uk
Expertise: Professional

Posted Wed Jul 31, 2013, 10:45am
Subject: Re: old type astoria 2 group
 

same problem again. not had chance to check voltage as customer is not local. if there was a problem with voltage to low would it be a problem with the board. have you come across this sort of problem before? we normally get pcb tested by electronic engineers.
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DeanOK
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DeanOK
Joined: 24 Sep 2012
Posts: 720
Location: OK
Expertise: I like coffee

Espresso: QM Vetrano 2B
Grinder: Vario W
Posted Wed Jul 31, 2013, 10:55am
Subject: Re: old type astoria 2 group
 

This probably does not apply... but I will say it anyway in the outside chance you have had to use a different solenoid coil than the original. Make sure the diameter of the core and the height of the core is correct for the solenoid. The iron core is necessary for the coil to function properly without drawing too much current and burning up. An old service mans trick is to shove a screwdriver in the solenoid coil if they have to unhook the coil with it energized. I would think it would have to be a very poor fit to worry about it burning up though from poor fit.
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