My burner service guy removed the pump on my Beckett head and screwed
in a small set screw. He said that this would make the pump return
the fuel back to the tank and that without this set screw the pump
wouldn't return the fuel. Does this sound right?
Thanks in advance.
The pump can optionally be set up to use a 1-pipe system
or a 2-pipe.
In a 1-pipe system, the pump returns excess oil to the tank
via the *same* pipe it is drawing suction on (actually inside the pump).
This works fairly well when the tank is at the same elevation
as the pump.
A 2-pipe system is used on longer runs and where the tank is
buried at a lower elevation. This allows the pump to develop
better suction and to get rid of air bubbles faster.
A 2-pipe setup will have some advantage even where the
tank is at the same elevation.
The setscrew is really a plug which blocks a bypass port on the pump.
With the plug in place, the pump will return oil via the return line
to the tank. The system needs to be "2-pipe" for this to work.
I had a 14 year old wayne head and it was replaced about 2 months ago
with an AF Beckett head and aquastat. I was having lockouts with the
Wayne head and other parts were starting to fail so I went for a new
Beckett. After the new head was installed all was fine for about a
month and then I started to get lockouts again. The guy came back and
installed the bypass plug ( iI have a two line system). It ran fine
for about a month and right after a fill up of oil I got a few
lockouts again. My service guy came back and tried to install a
priority relay but he couldn't get it to work. He now wants to
install a tiger loop.
I have an underground tank that is about 3 feet above my burners.
It's a short run from the tank to the house where the oil line is
split. One oil line goes to my boiler and a Reillo head while the
other line goes to a Beckett head and my Bock oil fired water heater.
The Reillo has never locked out. I ran two head like this for years
without any lockouts. On the line that goes to the Beckett I have an
oil filter on the line and a check valve. I have a filter on the
other line too. I was thinking of having the oil filter removed and
running the line from the tee to the Beckett head to eliminate as many
possible air leaks as possible. I'm thinking there may be a slight
leak in the oil filter or one of the connections that is pulling oil
from the pump when it's off causing the lockouts. The tech wants a
lot of money for the Tiger loop and seems to be stumped. What do you
think??? Oh yeah both retunr lies are teed and back into the tank too.
Thanks in advance.
It sure does sound suspicious. I agree that chasing any
possible air leaks would be a priority.
You may have to put a gauge on the pump to see whether the
pressure builds immediately as the pump starts.
These intermittents are tedious to track down and most
techs don't have the time to spend. You're better off
being your own detective sometimes.
The tech had me waiting all day and yesterday for him with no call.
When I called he said he was too busy. I guess he's giving up. I
guess I'm going to pull out my flaring tool and change the pipe myself
and run the line directly from the tee to the burner. I have the
strainer changed each year anyway. Do you think I should bother with
a Tiger Loop? That would mean turning my two line system into a one
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