Posted Sun Dec 23, 2007, 12:33pm Subject: Re: Got an Expobar Office Control
drtzali Said:
it continues to leak, but not quite as much. There was grime all over it when I first adjusted it, so perhaps the grime was keeping it from leaking up until now?
in any event, do i need to now replace the pstat, and if so, how exactly do I do that?
Probably so. I would try contacting Whole Latte Love even though you bought it used. They may be willing to help. At the very least if you do need to replace it then they could sell you the part and probably give you tech support in replacing it.
I'm wondering at this point if all the bitterness was due to whatever the guy used to decalcify the machine or if he ran something else through it. Did he say what he used?
That's odd that there would be grime all over the OPV. There's shouldn't be.
It's disappointing that you've had a negative experience with this machine. Mine has served me well. Typically it's a lot of machine for the money.
drtzali Senior Member Joined: 9 Jun 2007 Posts: 495 Location: NY Expertise: I love coffee
Espresso: Nuova Simonelli MAC Cup... Grinder: MACAP MK7R Vac Pot: um. Electrolux? Drip: Drop Roaster: Not that advanced yet...
Posted Sun Dec 23, 2007, 12:39pm Subject: Re: Got an Expobar Office Control
DigMe Said:
Probably so. I would try contacting Whole Latte Love even though you bought it used. They may be willing to help. At the very least if you do need to replace it then they could sell you the part and probably give you tech support in replacing it.
I've tried contacting WLL about 5 times now, since I've gotten the machine...every time, I was told the techs were busy, I should leave a message, and they would return my call. They have not yet done so.
I'm wondering at this point if all the bitterness was due to whatever the guy used to decalcify the machine or if he ran something else through it. Did he say what he used?
actually, he did not decalcify...he confused that term with backflushing, which is ths only maintenance he did.
It's disappointing that you've had a negative experience with this machine. Mine has served me well. Typically it's a lot of machine for the money.
I'm not upset...I'm actually enjoying the learning process somewhat! In the meantime, my gaggia continues to serve me well.
This thread has gotten long enough...I'm going to start a new one to request help on changing the OPV.
thanx again to everyone (particularly Brad) for all the help.......!
Posted Sun Dec 23, 2007, 12:45pm Subject: Re: Got an Expobar Office Control
I'd try some white food grade grease, or Dow 111 Silicone on the threads of the OPV screw. It may be enough to make the screw turn easier & keep it from leaking.
Brad sorry, I can't see from you pics., the OPV on the Office Control is plastic??
Hi Alan I'm glad you're enjoying yourself getting to know the innards of a machine can be a little daunting, but ultimately it'll be a rich experience and will make you one with your machine and ultimately your espresso. I also think that once the Expobar is up and running you'll put the Gaggia away for good!
sjames Senior Member Joined: 19 Dec 2001 Posts: 464 Location: Melbourne, Australia Expertise: Pro Barista
Espresso: Expobar eb-61 Office Leva Grinder: Mazzer Mini Vac Pot: Unibuy Syphon Drip: Are you talking to me????? Roaster: Peter Wolff - Veneziano
Posted Sun Dec 23, 2007, 1:58pm Subject: Re: Got an Expobar Office Control
Craig,
The OPV screw will be made of plastic.
drtzali,
I'm sorry to hear you're not pulling great shots.......... yet;-) Your temperature issue could be a pstat that's set too high, or the need for a thermosyphon restrictor (check this page at the Expobar Owners Group). However it could be more serious:-( It may also be a hole in the HX, or a faulty valve in the return of your thermosyphon. I had my Office Leva repaired under warranty, and the tech told me that the thermosyphon return line to the boiler has a one-way valve fitted to prevent hot water flowing back along the return line. My thermosyphon was generating "Super-Heated water that was taking mega-flushes to deal with. They also fitted the restrictor, and now my Office Leva has VERY consistent shot temps. I understand your desire to sort this problem yourself. I recommend that you find out where your pstat is set at first. If it's not cycling in the 1.0 - 1.3 bar range, but towards the 1.5 bar range, get it adjusted down. Once the machine is cycling over 1.5 bar, the safety valve should start to activate. If the pstat is cycling in the right range, I would get your machine to a tech asap. As has been said before, Expobars are a lot of machine for the money, so you will eventually get some great shots.
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