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E61 Rocket Boiler refill / Heating Problem
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schert
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Joined: 4 Dec 2009
Posts: 30
Location: Auckland NZ
Expertise: I love coffee

Posted Sun Apr 15, 2012, 3:00pm
Subject: E61 Rocket Boiler refill / Heating Problem
 

This problem seems to only happen 1st thing in the morning or if the machine has been off for probably more than 5 hours. When I first turn it on the pump starts (only briefly) but the boiler does not heat ... a few things seem to trigger the pump to kick in again such as turning the machine on and off a couple of times and also if i move the water level probe in the top of the boiler... after these actions the pump gives a bit more water and the boiler heats up and all is fine. When fully heated and up to pressure the machine seems to work as it should with the boiler refilling fine.

So from my understanding is the boiler is not getting enough water from the initial refill on the start up or could it be a control box issue. The pump was replaced 1 year ago and has been de scaled also I have cleaned the probe and checked all connections.  Also if the machine is turned off only for a few hours it starts up fine... seems to only happen when its stone cold.

Sorry for the long winded explanation but any help guidance would be appreciated.

Thanks

Karl
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schert
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Joined: 4 Dec 2009
Posts: 30
Location: Auckland NZ
Expertise: I love coffee

Posted Sun Apr 15, 2012, 9:55pm
Subject: Re: E61 Rocket Boiler refill / Heating Problem
 

I have since been told that the element and pump refill are independent (older rocket made in 2000) so the repair person over the phone is leaning towards element or control box. Any other areas I could check before dropping off would be appreciated .. I like mucking around with the machine but if it interrupts the coffee flow at home for too long I will have to take her in.

Thanks
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
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 Apr 16, 2012, 6:00am
Subject: Re: E61 Rocket Boiler refill / Heating Problem
 

I agree, the fill level and the heater are two completely different things. It should heat regardless of where the water level is, it should maintain the water level regardless of if the boiler is hot or not.

 
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Joel_B
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Joel_B
Joined: 9 Oct 2007
Posts: 1,823
Location: Pacific NW
Expertise: I love coffee

Espresso: Astra Mega II
Grinder: Mazzer SJ, Virtuoso
Vac Pot: Yama 5 cup
Drip: nope, french press
Roaster: Behmor, WP, BBQ drum
Posted Mon Apr 16, 2012, 6:24am
Subject: Re: E61 Rocket Boiler refill / Heating Problem
 

While they're independent, it could still be water level causing the heating element to not start.  With both my astras they go through a diagnosis when you first turn on the machine.  It will fill the boiler prior to the heating element to come on.  It's possible you machine has a similar feature.  Water level sensors arent known for failing per se outside of heavy scale.  You can pull the probe and see if there's heavy scale.  Obviously it could be a myriad of things that would cause this from wiring to the control box like you said.

You can test the heating element by checking the resistance.  Not sure of your voltage in nz but the formula is voltage x voltage / heating element watts.  So if you have 120volt with. 1200 watt heating element you'd want 12ohms reading across the terminals. If the heating element has low or no resistance it's obviously failing.
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frcn
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frcn
Joined: 23 Dec 2001
Posts: 3,427
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
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Roaster: computer controlled Hottop,...
Posted Mon Apr 16, 2012, 8:45am
Subject: Re: E61 Rocket Boiler refill / Heating Problem
 

Removing the water level probe wire from the probe should cause the pump to run and the boiler to fill continuously at any time. Grounding the wire after removal should keep the auto fill from running at all. With the machine unplugged, check for corrosion or loose connectors at the control box and pump. Feel the various related wires for internal damage (broken wires inside the insulation near connectors) or swollen areas which would be a sign of corrosion.

 
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MoffeeCoff
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MoffeeCoff
Joined: 15 Feb 2012
Posts: 43
Location: Australia
Expertise: Professional
Posted Sun Apr 22, 2012, 11:06pm
Subject: Re: E61 Rocket Boiler refill / Heating Problem
 

Hello! I am having the same problem as schert had. Thankfully, I got some great suggestions here. I hope more discussions will further help me. Thanks!

 
http://www.coffeebeancounters.com.au/
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