Hi! I found a Primus 1020 on a flee market that im currently rebuilding with new gaskets, and while doing that i also got a Petromax/Britelyt 500. I have a couple of thoughts about these though: 1. Should i be able to throttle the lamps? I find it extremely difficult to run them at less than full power, they need constant adjustment not to flame out. 2. How often should i halfto re pump the lanterns? If my logic isnt wrong, with the tank filled to 50% the pumped pressure should last until the lantern runs out of fuel.
..Hello young farmer and a warm welcome to CPL! ...May I just say that is a very smart lantern you have there? ...While I can't myself give answers for your questions I'm sure someone with the knowledge and experience of your lamp will be along to help and advise.... ...They do seem to be a very well thought of piece of Swedish craftmanship... Best wishes, pb
Welcome to the forum. The 1020 is only meant to be run with the cleaning needle clear of the jet, i.e. full on. Trying to adjust the burn by using the cleaning needle will only damage the cleaning needle and the jet. If all the seals are in good condition then you are right about the pumping.
It probably is. In the context you mention, the amount of fuel in the tank isn't really relevant - it's the amount of pressure you've put in there. Irrespective of the amount of fuel in the tank, if you've given it 10 pump-strokes it'll probably go out before the fuel is used up whereas if you've given it 100 pump-strokes, it may well run out of fuel first...
Fáilte and greetings from Ireland. 1020 is an excellent lantern, extremely easy to work on, slight bit on the noisey side when running but an all round excellent! Simple Swedish enginnering at its best.
Thanx everyone! I did some tests with my Petromax 500, with the tank 50% full, and the pressure at max(0.3MPa) it burns for about 3-4h before fuel/pressure is low. The perfect mix should probably bee 66% fuel, then there should be just 0.1MPa left when the tank runs dry. I had to pump it far too often before, but after spraying the lantern with soap water i discovered that the pressure gage was leaking.
Welcome, farmer78. The Primus 1020 is a very well designed lantern and you can adjust the brightness by means of the fount pressure. The black knob is not a fuel valve at all but only for cleaning the jet. Use kerosene / paraffin only. It is normal to pump up either lamp a little more after burning for an hour or two. 3/4 full of kerosene is about right to start with.
It seams that a bit of handiness is a good thing to have when using lanterns, today my "quick starter" started to malfunction, it hasnt worked propperly since i got it, but today it wouldnt ignite at all. I had to strip the hole lantern down and clear the jet, but now its back in working order again!
