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4969Re: [BUG] How to adjust group pressure.

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  • Chuck Hancock
    Apr 1, 2014
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      Tex, can you tell the name & model of a good pump to use on my ES-1A?  The pump motor is fine but the pump is weak.  Thanks. Chuck Hancock

      Sent from my iPad

      On Jan 11, 2013, at 9:34 PM, "Tex" <texas-coffee@...> wrote:

       

      I use one of two units; 1) http://www.espressoparts.com/V_512 and a home built kit using a) 3/8 NPT brass elbow to connect to a portafilter, b) 200 PSI liquid-filled gauge, and c) brass reducing bushing to fit 'a', 'b', and 'c' together.

      Tex

      --- In BUG-is-Bunn@yahoogroups.com, Chuck Hancock wrote:
      >
      > Exactly what I was looking for.  Thanks.   Is there a  gauge made that fits all machines to use when adjusting?  Thx again
      >
      > --- On Fri, 1/11/13, Tex wrote:
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      > From: Tex
      > Subject: [BUG] How to adjust group pressure.
      > To: BUG-is-Bunn@yahoogroups.com
      > Date: Friday, January 11, 2013, 3:42 PM
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      > It dawned on me that some of you have never checked or adjusted the group pressure of your Bunn? What follows applies to ES-1A model.
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      > * UNPLUG MACHINE!
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      > * Remove the top; panel (a few screws).
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      > * Remove the right side panel (1 screw front and back inside edge).
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      > * Use proper size wrench to loosen jam nut on bypass valve)
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      > * Use a long flat-blade screwdriver to turn screw in bypass valve
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      > __Clockwise increases pressure
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      > __Counter clockwise reduces pressure
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      > * Tighten jam nut just past finger tight.
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      > * reassemble side & top panels.
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      > * Plug machine in and enjoy!
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      > These machines are 20+ years old, and because during that time they've probably been bounced around a lot, I've yet to see one with an accurate pressure gauge (either boiler or group). For that reason I never rely on them when adjusting group pressure; instead I use a portafilter-mounted gauge when checking group pressure.
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      > Tex
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      > [Non-text portions of this message have been removed]
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