13
11. Lifting unit
A lifting unit (pic. 12) has a gear pump with its own electric engine, a flange to connect fine fuel
filter and a set of flexible tubes one of which has a sieving fuel inlet on the end.
Pic. 12 Lifting unit with a fine fuel filter
Instead of a fine fuel filter any car oil filter with standard rim diameter and screw can be used.
Cargo vehicle filters are more long-lasting because of their large volume.
Before installing an oil filter fill it with fuel and put some on a rubber o-ring. Assembling and
dismantling the filter should be done with a catch hook that can be bought in a car parts shop.
The lifting unit has to be installed on the main fuel box, if it is placed in the room next to the
burner, or on the waste fuel box next to it, if the main box is not placed in the room. In the latter
case the fuel flow from the main box to the waste one has to be organized.
Electric connection of the lifting unit is done according to the burner electric diagram (pic.10 and
11)
The base box of the lifting unit must be grounded!
NB!
To keep fuel clean, a sieving fuel inlet needs to be installed so that its lowest part
was no less than 15-20 cm from the bottom of the fuel box. It will prevent water and
solid dregs from getting into the burner.
It is better to have a floating fuel inlet. For this purpose, any suitable float (sanitary or an empty
plastic bottle) can be adjusted to it. It is recommended to use a limiting chain or wire which will
not let the fuel inlet to go down to the bottom of the box. (pic. 13)
Electric engine
Gear fuel pump
Fuel filter flange
To the fuel box
(via flexible tube
with a fuel inlet)
To the burner
(via blue flexible tube)
Base box
