Datasheet Content
BURNERLANCE 24-HA-D 24-Y101-UG-E
MANUAL 22-11-05
Documentation
The following information sheets illustrate the description below:
24-Y101-4G-E Sectional view of the lance with main dimensions
24-W101-6G-E Sectional view of the head of the lance with atomiser discs
00-Y101-8G-E Diagram of pneumatic/hydraulic system inside the lance (1 solenoid)
00-Y101-8H-E Diagram of pneumatic/hydraulic system inside the lance (2 solenoids)
General
The burnerlance 24-HA-D is especially suitable for use in or on an oil burner and is designed to operate
spill back disc atomisers with shut-off needle. The strong spring on the actuating rod pushes the needle in
closed position. This ensures a reliable shut-off under all circumstances.
Compressed air actuates the piston for opening, either controlled by two external solenoid valves (see
00-Y101-8H-E) or by one 3/2 solenoid valve (see 00-Y101-8G-E). The piston has a fixed travel, pulling
the needle in the correct position when it opens.
During the pre-purge period of the burner, the needle is keeping the orifice closed and the fuel circulates
through the lance at pre-set supply and return pressure. On energising both solenoid valves or the
3/2 solenoid valve, even after long idle intervals, there is immediate atomisation guaranteeing perfect
ignition.
The burnerlance is suitable for supply pressures from 20 up to 40 bar and fuel temperatures up to 140°C.
Mounting the atomiser discs
Often a lance is delivered with the discs mounted. This is just to avoid loss of parts during transportation.
The capnut then is screwed on by hand, not tightened. In this case, you should also mount the atomiser
discs as described below.
The orifice and the swirler are to be build in according to information sheet 24-W101-6G-E.
To ensure adequate sealing, the sealing surfaces at the adaptor, at both sides of the swirler and at the
orifice should not be damaged. Never use any additional sealant on these surfaces.
Remove the capnut from the lance. Make sure all parts involved are clean and free from any dust or other
particles. Slide the swirler over the needle. It should glide smoothly. Place the orifice and the swirler, in
the right order and position, straight inside the capnut as shown in sheet 24-W101-6G-E.
It is advised to apply a little "Molykote HSC" or equivalent compound, on the thread of the adaptor only,
to prevent problems when dismounting the capnut after a longer period. The sealing surface of the
adaptor, the inside of the lance, the needle and the atomiser discs are to be kept absolutely clean.
Now carefully slide the capnut containing the discs over the needle and screw on the nut by hand as tight
as possible. Tighten the capnut firmly with a spanner. The adaptor has flat sides to hold the lance while
screwing or unscrewing the capnut. These flats exclusively serve this one purpose!
© Fluidics Instruments BV Page 1/3
BURNERLANCE 24-HA-D 24-Y101-UG-E
MANUAL 22-11-05
Connections
The connections (see 00-Y101-8G-E and 00-Y101-8H-E) on the block of the lance are marked as follows:
S Fuel supply to the atomiser. The pressure only depends on the desired behaviour for the atomiser.
R Fuel return from the atomiser. Fuel output control is achieved by connecting either a pressure or a
volume regulator.
C Compressed air supply and return for needle actuation. A filter having meshes smaller than 50 µm
should be present. The needle opens correctly at a pressure between 5 and 15 bar. The returning air
should be allowed to flow freely without counterpressure. Only then reliable closing of the needle
is possible.
To prevent malfunction, be careful when removing the plastic plugs from the connection ports and make
sure no material stays behind.
When choosing fittings, make sure that the channels inside the connection block remain fully open. Even a
partial blockage at one of the channels inside will inevitably lead to malfunctioning of the burnerlance.
Never use any additional sealant on the thread. The remains getting inside the lance could lead to failures.
There are no objections against the use of flat gasket rings to seal the fittings.
Function
During the pre-purge period, both the external solenoid valve in the supply line and the external volume or
pressure regulator are open. The solenoid valves operating the needle are currentless. Thus, the spring
loaded actuating rod pushes the needle against the seat of the orifice up front, keeping it closed,
preventing fuel from reaching the furnace prematurely. The pressure at port "C" is 0 bar. The fuel
circulates from port "S" via the swirler in the atomiser through the lance toward port "R", bringing the
whole up to operating temperature.
Before opening the needle, make sure the IGNITION IS TURNED ON. In addition, the external regulator
and the combustion airflow are to be adjusted beforehand in such a way that the burner will START ON
LOW FLAME.
As soon as one switches on the solenoid valves operating the needle, the pressure at port "C" increases to
5 bar or more; the rod retracts the needle and the ignition causes a flame immediately.
An external volume or pressure regulator in the return line controls the output flow of the atomiser.
Interruption of the power supply to the solenoid valve at port "C" leads to immediate closing of the
needle, handled by the spring. The fuel flow from the atomiser stops abruptly. The pressure at port "C"
drops to 0 bar. The fuel circulation from port "S" via the swirler toward port "R" continues as before,
maintaining the temperature of the lance.
If firing heavy fuel, we advise mounting a heating device to preheat the lance for those applications where
the fuel supply to port "S" often stops during longer intervals. Normally it is sufficient to apply an
electrical heating plate just to preheat the connection block at the lance. Four threaded bores in the
connection block allow mounting such a heating plate. This heater could work permanently, but it should
at least be switched on in time before fuel is supplied to port "S" to achieve correct operation of the
control system inside the lance.
© Fluidics Instruments BV Page 2/3
BURNERLANCE 24-HA-D 24-Y101-UG-E
MANUAL 22-11-05
Maintenance
The burnerlance normally does not require any maintenance. Wear or damage of the orifice, the swirler
and the needle highly depend on fuel quality. These parts are easy to exchange. The only moving part is
the actuating rod with the piston. After a while some wear may occur on the o-rings. Complete seal sets
are available for replacement.
Before taking one of the following steps, remove the orifice and the swirler from the lance and put the
capnut back on as protection for the needle and the adaptor. Always pay attention not to damage the
sealing surfaces at the adaptor and the atomiser discs. Before re-assembly, make sure all parts involved
are undamaged and perfectly clean.
To exchange the o-ring 25,12x1,78 on the piston, remove the cover, held by 4 screws. Pull out the bearing
together with the o-ring 33,00x2,62. Exchange the o-ring 25,12x1,78 and put the bearing with o-ring back
in place. Now we can mount the cover.
To exchange the inner o-rings 6,02x2,62, remove the cover, held by 4 screws. Pull out the bearing
together with the o-ring 33,00x2,62. Use a piece of wood or plastic to push back the needle head.
WARNING FOR INJURY: The actuating rod comes out suddenly. After that, you can pull it out easily.
Do not damage the head of the needle.
The actuating rod has to be taken apart to exchange the o-rings 6,02x2,62. Remove the pin that connects
the holder to the rod and take the holder off. The rod in lances longer than 800 mm is – for extra
guidance – provided with triangles. Each triangle is secured with a pin. Remove these pins and triangles.
Clamp the free end of the rod in a bench vice with soft yaws placing the stop against the yaws. Remove
the pin holding the stop and release the spring pressure by slowly opening the vice. Take off the stop, the
spring, the spring disc, the disc and the between disc. Polish any sharp edges on the rod and exchange the
o-rings 6,02x2,62. Near the o-rings, the rod should be absolutely free of damages. Re-assemble the
actuating rod in reverse order.
To exchange the needle, just remove the pin that holds it. Secure the new needle with the same pin.
To test, put the actuating rod into the burnerlance without the o-ring 25,12x1,78 and without the o-rings
18,72x2,62 on the discs. The rod should move freely. Pull it back a little, mount both o-rings 18,72x2,62
on the discs and push the rod in place. Slide the bearing over the piston in the connection block and turn it
to check the fit. If fitting correctly, mount the o-ring 25,12x1,78 on the piston and push the bearing with
the o-ring 33,00x2,62 back in place. Now we can mount the cover.
Finally, mount the orifice and the swirler as described under "Mounting the atomiser discs".
© Fluidics Instruments BV Page 3/3
Burnerlance 24-HA-D-"L"-"d" welded 24-Y101-4G-E
23-03-22
"d"
(1:4)
Capnut
w.st.nr.: 1.0715
Needle
w.st.nr.: 1.2210
Adaptor
w.st.nr.: 1.4122 SW. 32
Holder
w.st.nr.: 1.2210
7.5 45
M5x12/15
Triangle
w.st.nr.: 1.0715
only for lances 45
from 800mm
"L"
Rod 7.5
w.st.nr.: 1.2210
Stop
w.st.nr.: 1.2210
Spring
w.st.nr.: 1.4568
60
Ø40
60
30 16 16
G3/8" "R"
G3/8" "S"
G1/4" "MR"
Connection block
w.st.nr.: 1.0122 19
Spring disc
w.st.nr.: 1.0715
Disc
w.st.nr.: 2.0401 60
O-Ring 6.02x2.62
viton Between disc
w.st.nr.: 2.0401 G1/4" "MO"
O-Ring 18.72x2.62
viton…
