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91
Waste Vegetable Oil / Re: Pre heat used canola/motor oil/hydrocarbon thinners
« Last post by Russ on January 04, 2019, 05:39:35 pm »
Sounds like you have a nice heating system designed UPSMAN.  I cant comment as I don't heat the oil in my holding tank.  The temp is always above freezing because of backup electric heat, so the nozzle heater does all of the work.  I do see where temps of minus 20C could cause problems if the oil isn't preheated.  Maybe others will have some opinions as well.  Good luck with your project!
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Waste Vegetable Oil / Pre heat used canola/motor oil/hydrocarbon thinners
« Last post by UPSMAN on January 03, 2019, 06:04:39 pm »
I will be using a 5 gallon hydraulic resv box as my supply source, heated with silcone pads 300 watts total and a 1500 watt water heater element dialed back to likely 300. I will be pulling oil with a single pipe system thru the water heater element fitting. Now do any of you guys stir your prime tanks to get the heat distributed better or just let em heat? Thanks for your thoughts. My mix will be primarily used veg oil, splash of diesel and another hydrocarbon. Gets to minus 20 C without starting the shop furnace.
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Did you get it figured out ?
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Usually when regulators go bad the diaphragm tears and oil comes out the weep hole. You are saying they replaced the preheat block or did they clean it and install a service kit ? If the block was replaced with a new one see if there is a date stamped on it. 
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Commercial Waste Oil Heaters / Clean Burn 2800 oil pressure adjustment issue?
« Last post by DP on December 26, 2018, 06:28:20 pm »
Hello everyone. I am having an issue with my CB2800 waste oil heater. I recently had my unit serviced by PetroChoice (only two months ago, preheater block swapped, cabinet cleaned, barometric dampener swapped & stack replaced) & the unit has been running like a dream. Last Friday, our heater was off. When I hit the reset switch, I noticed that I had ZERO oil pressure after having perfectly consistent oil pressure the past three weeks (I believe it was at running smoothly at 4.5 PSI). Thinking I had an oil bleeding issue, I disconnected the oil line from the outside of the box to check my oil flow & I had surprisingly good oil flow at the burner. I reconnected the oil line & reset the burner to see if I had any oil pressure at all. Again, none. After I waited a half hour, I restarted the burner with the oil pressure adjustment screw slightly further down. I saw it barely move the needle, so I turned the adjustment screw a little bit more. Long story short, with the oil pressure adjustment screw all the way down to the maximum position, I couldn't get more than 2 PSI of constant oil pressure. I had zero fluctuations in oil pressure & strong oil pressure when bleeding the burner, so I took a look inside the burner box. Figuring I had a clog in the preheater block or something, I removed the box & disassembled the preheater block. It was JUST replaced when my burner unit was serviced by PetroChoice & was absolutely spotless inside. I removed the oil pressure gauge, and blew some low pressure air through the unit & nothing was clogged at all. I removed the oil pressure regulator (but did not disassemble) to make sure I didn't have a clog & re-assembled & re-installed the unit. Same exact issue. I called PetroChoice, but they can't come out for a few weeks.

Do these oil pressure regulators go bad? If they do, I can replace it, but I didn't want to throw parts at the unit. Again, I have zero fluctuations in oil pressure. I have good oil feed pressure at the burner box. The preheater block is definitely heating up. My oil gauge is functioning perfectly (I swapped an older one I saved just to be sure). I'm out of ideas, other than waiting for PetroChoice to come out, or ordering another oil pressure regulator to swap out myself in 1/4th of the time.

Does anyone have any advice, or know any common issues with these? Or should I stop touching the oil burner box & just wait two to three weeks to have PetroChoice look at it?

** In case anyone needs to know, I burn filtered automatic transmission fluid in this CB2800.
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Beckett / Re: I need HELP!
« Last post by Russ on December 20, 2018, 09:05:02 pm »
Sounds like things are going better.  That is about exactly how I run mine.  About 8 PSI and 210F.  Hopefully it was just the oil.  Good luck!
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Beckett / Re: I need HELP!
« Last post by ageingrodder on December 20, 2018, 04:29:31 pm »
Russ,  I weaned my furnace off clean #2 heating oil and started back on used oil yesterday. Everything is currently operating fairly well.  My previous regulator seemed to be floating, not holding a steady pressure.  This was exacerbated by a battery powered digital pressure gauge that I couldn't read at a glance.  I finally removed the heater block and thoroughly cleaned then resealed the foot plate.  I am currently running at about 10 psi with combustion air slots nearly closed.  My preheat temperature is 195*.  Ignition stumbles and I am still getting some very minor puff-backs during ignition but it is tolerable.  I believe my biggest problem was that the used oil I had been trying to use was from a new source and didn't want to burn.  I checked it for water and that wasn't the issue.  I will not use that source any more.
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Beckett / Re: I need HELP!
« Last post by Russ on December 17, 2018, 10:04:50 pm »
Glad to hear you got it figured out.  At least mostly figured out.  So was the regulator giving it too much air, or not enough do you think?

For your delayed ignition, what temp are you running the heater at?

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Beckett / Re: I need HELP!
« Last post by ageingrodder on December 04, 2018, 07:25:57 pm »
- UPDATE -I discovered I had a faulty siphon air regulator. I replaced the regulator and, based on Craig's recommendation, set the pressure to 9 psi.  With this setting, I achieved good ignition while running clean #2 oil.  However with used oil I am having delayed ignition, resulting in backfire issues. ( ;D At least it is lighting and I can get heat into my shop). In the meantime I will continue to talk to Craig and experiment.
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Beckett / Re: I need HELP!
« Last post by ageingrodder on December 03, 2018, 08:57:55 pm »
Is there by chance a knowledgeable forum member that lives near Stayton Oregon that I could entice into coming to my place to help me trouble shoot this issue?
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