Search results

I have now been able to measure the capacitance of the Ducati motor run capacitor I recently replaced, and which would intermittently not start the burner motor. It had gone down from a nominal 4.0uF (+/-5%) to 3.7uF. Now that's not a big reduction, and only 0.1uF below the allowed tolerance...

I have done bit of research on the lifetime of motor run capacitors, results as follows: 1. In use the capacitor sees between 1.5 and 2 times the motor voltage (i.e. could be up to 480v in the UK). 2. The capacitor lifetime is VERY dependent on how stressed it is, so it's important to...

I followed your very helpful instructions this morning and I believe I have fixed it. Not too easy to do as one of my flex lines made removing and refitting the pump difficult but I got there. The cause of the sticking seems to have been a build up of rust both inside and outside the nylon...

Well I replaced the motor start capacitor today with immediate improvement. I will arrange for the old component to be measured. I am inclined to think that the problem is a combination of a partially degraded capacitor and a sticking motor/pump so I plan to separate the oil pump as suggested...

That makes sense. The resistance is not huge - it's like starting a very small single cylinder engine when the compression increases the resistance, and then eases off after TDC. But I can understand why it stops the motor starting. I changed the capacitor three years ago when I had a...

This burner has started locking out when it should be starting up. If I move the fan on a fraction it will start (after pressing the lockout button) and then runs normally. But once the motor has stopped it will not then restart without my repeating the manual fan movement. I have taken the...