Thermacon CH oil boiler fitted with ecoflam pressure jet unit with Danfoss BFP 11 R3 oil pump.
It was working fine until a couple of days ago when it failed to complete the start-up sequence. I lifted the cover that protects the fan and electrodes and found that the fan shaft was hard to rotate and was stalling the motor. I deduced that the oil pump was the culprit.
Fast forward, I've just installed a replacement pump (and a new nozzel) and the boiler ran fine. I then adjusted pressure and air mixture. After reaching the set boiler temperature it stopped, however it then failed to re-start though it tried. The fan motor could not spin the pump, but I found that if I rotated the fan a bit the motor and reconnected the power it would start OK and the start-up sequence was completed as normal.
The above suggests to me that the motor should stop at a point in it's 360 degree rotation that allows it to start without the full resistance of the pump. I'm sure there must be a heating engineer here who can point me in the right direction <G>
Cheers
Richard
It was working fine until a couple of days ago when it failed to complete the start-up sequence. I lifted the cover that protects the fan and electrodes and found that the fan shaft was hard to rotate and was stalling the motor. I deduced that the oil pump was the culprit.
Fast forward, I've just installed a replacement pump (and a new nozzel) and the boiler ran fine. I then adjusted pressure and air mixture. After reaching the set boiler temperature it stopped, however it then failed to re-start though it tried. The fan motor could not spin the pump, but I found that if I rotated the fan a bit the motor and reconnected the power it would start OK and the start-up sequence was completed as normal.
The above suggests to me that the motor should stop at a point in it's 360 degree rotation that allows it to start without the full resistance of the pump. I'm sure there must be a heating engineer here who can point me in the right direction <G>
Cheers
Richard