Riello M3 burner will not fire


  #1  
Old 12-01-13, 05:33 PM
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Riello M3 burner will not fire

hello I have a riello m3 burner that will not stay lit. when the reset button is pushed
it will go through the pre-purge and when it lights there is a lot of clicking noises
and the reset trips out. I tried a different pump and installed a new nozzle, bled the
pump (no air in system) and still won't light. I cleaned the photo eye as well. there
is flame when the clicking noise is happening (flame/no flame/flame/no flame). any
help would be appreciated.
 
  #2  
Old 12-01-13, 05:46 PM
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If you are getting clicking noises after replacing the pump & the flame drops out, comes back, etc., you could have a slipping pump coupling or a bad primary control. The coupling (I think Riello calls it a drive key) is far cheaper than a primary.
 
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Old 12-01-13, 05:58 PM
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thank you I will check the drive key tomorrow night, I am not fimilar with how a good one looks so I will google it before I take it back apart.
 
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Old 12-01-13, 06:08 PM
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If you have a pressure gauge you can use while the burner is running, you could tell by a flutter in the pressure if the key was slipping.
 
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Old 12-01-13, 06:14 PM
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thanks I will do this tomorrow night
 
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Old 12-02-13, 05:13 PM
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thank you

thanks for your help. I replaced the drive key, looked fine. adjusted the rods and
it took right off, thanks again Dave.
 
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Old 12-02-13, 06:05 PM
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By 'rods' I presume you mean the ignition electrodes. Good job & I'm glad you got it up & running.
 
 

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