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Discussions > Espresso > Machines > gUsed Oscar...  
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GVDub
Senior Member


Joined: 25 Jan 2008
Posts: 849
Location: Los Angeles, CA
Expertise: I live coffee

Espresso: Londinium I, Arrarex...
Grinder: Gaggia MD85, Dienes Mokka,...
Drip: Behmor Brazen, Abid Clever
Roaster: Behmor 1600
Posted Fri Nov 22, 2013, 9:29am
Subject: Re: gUsed Oscar Issues
 

Citric acid is also called "Sour Salt" and should be available at any home brewing supply house or many ethnic markets.
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jabone
Senior Member


Joined: 2 Nov 2013
Posts: 17
Location: Vancouver
Expertise: Just starting

Posted Sat Dec 14, 2013, 11:45pm
Subject: Re: gUsed Oscar Issues
 

Well, i had to shelve my work on this thing for a while because i got pretty busy at work.

I am now attempting to rewire everything but unfortunately did not take any pictures.

I have been able to work my way backwards from pictures of torn apart oscars but am still having some problems.

The power cord has 3 wires coming out of it (green, black, white). I need to connect this 2 3 wires (blue, brown, yellow). I think the following is correct but can someone confirm

white - yellow
green - blue
black - brown

Also, any advice on the resot of the wiring?
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plindy
Senior Member
plindy
Joined: 27 Nov 2002
Posts: 73
Location: Seattle
Expertise: Just starting

Espresso: NS Oscar
Grinder: SJ Pharos Lido HG-One
Posted Sun Dec 15, 2013, 3:50am
Subject: Re: gUsed Oscar Issues
 

power cord
looked on my plumbed in  on 24/7

black      blue
white      brown
green      yellow/green stripe

Gicar brain
later models  have #'s on the wires
4 gray           1 white
5 black          2 red
_____            3 yellow/green stripe
_____
6 red
7 orange
8 blue x2
9 white
10 red x2  or brown x2

pump
orange or yellow outside
blue      inside

howzat!

plindy: 66.jpg
(Click for larger image)
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jabone
Senior Member


Joined: 2 Nov 2013
Posts: 17
Location: Vancouver
Expertise: Just starting

Posted Sun Dec 15, 2013, 11:18pm
Subject: Re: gUsed Oscar Issues
 

Wow,

Thanks so much Plindy. I did see the wiring info on the Gicar but couldn't read all the numbers on my wires. I managed to piecemeal it through identifying what i could or comparing with pictures i saw. Good to have a second confirmation though.

I followed your instructions for the power cables and it seems to be good to go.

I have not yet connected the heating element. Does it matter which wire connects where on here?

Also, there is a little circular plastic piece that screws into the boiler. I am guessing this is a thermocouple. Does it matter how the wires on this are connected (2 black wires)?

Last question, it looks like the boiler is very close to the fill tank. unfortunately i completely destroyed the insulation when i ripper everything apart. Any info on something i can get locally that will be easy to find? I went to home depot and the only stuff that was there was some unsulation for boilers but the pieces were huge and it costed approx $40. I am looking at a cheaper option before i connect the heater due to the proximity to the water tank.

Well, here is the good news. The water pressure seems a lot better (don't know if its enough but seems good), and the water coming out doesn't stink anymore. I am getting closer, just hope i don't get any leaks when it steams up.
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plindy
Senior Member
plindy
Joined: 27 Nov 2002
Posts: 73
Location: Seattle
Expertise: Just starting

Espresso: NS Oscar
Grinder: SJ Pharos Lido HG-One
Posted Mon Dec 16, 2013, 3:45am
Subject: Re: gUsed Oscar Issues
 

P stat hi-limit switch and element , all the black wires , seem to work either way there are connected

more than you ever wanted to know about insulation
factory's cheap
nextstepup


here's something else your not gonna wanna do
might be a good time to replace the heating element gasket

Gluck
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jabone
Senior Member


Joined: 2 Nov 2013
Posts: 17
Location: Vancouver
Expertise: Just starting

Posted Wed Dec 18, 2013, 7:10pm
Subject: Re: gUsed Oscar Issues
 

Yeah, even though i changed the gasket, the heating element was leaking. Tightenened that up and fixed it.

New problem:

I nudged the water level wire so that it was off and turned off the machine. Water started coming out of the safety valve. Turned it off, let it dry, reconnected the water level wire.

Now when i turn on the machine, water is coming out of the vacuum breaker valve. Could this be because the oiler is too full, how can i empty so that i can refill it correctly?
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jabone
Senior Member


Joined: 2 Nov 2013
Posts: 17
Location: Vancouver
Expertise: Just starting

Posted Thu Dec 19, 2013, 12:24am
Subject: Re: gUsed Oscar Issues
 

Ok, problem solved. I am now running. Thanks everyone for all the help.
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malouda
Senior Member


Joined: 24 Jun 2013
Posts: 1
Location: France
Expertise: Just starting

Posted Thu Dec 19, 2013, 4:11am
Subject: Re: Used Oscar Issues
 

Pick up the sealant shown in the video, it's much better than pipe tape. Get a priming bulb for priming vibration pumps. Also pick up an air pressure regulator with a gauge so you can check or adjust your boiler safety valve's opening pressure. They have to be replaced once every two years anyway, so if you buy a valve with certified calibration, you won't need the tool. Don't buy an ohmmeter, get a digital multimeter with a half-decent sampling rate so you can do electrical tests of all kinds
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