Bentone B 30A Technical specifications

Providing sustainable energy solutions worldwide
CR00440 178 198 51-1 2021-12-09
Installation- and maintenance instruction
B 30 A
LMO14.113C2E
AS47CK
60Hz
Translation of the original instructions.

2Bentone
example Beispielexempel
352011030141
Designation
Type
Model
Serial no.
Motor supply
Main supply
MADE IN SWEDEN BY
LIGHT OIL 35-90kW 1,25-6,0 cSt 7-14bar
BF 1 KS 76-24
BF 1
BF 1 KS 76-24
1234567
1~230V 1,0A 50Hz IP 20
Man.Year 2019
Cap. Min-Max
3
?
1
-sv
1. Manualer på övriga språk
2. www.bentone.com\
nedladdning
eller scanna QR-koden.
3. Skriv in brännarens
artikelnummer som finns på din
typskylt (se bild) och välj ditt
språk.
Detaljerad ecodesign information
kan laddas ner på:
www.bentone.com/ecodesign.
-en
1. Manuals in other languages
2. www.bentone.com\download
or scan QR-code.
3. Enter the burner`s article
number on your data plate (see
picture) and select language.
Detailed ecodesign information
can be downloaded at:
www.bentone.com/ecodesign.
-da
1. Manualer på andre sprog
2. www.bentone.com\download
eller scan QR-koden.
3. Indtast brænderens
artikelnummer, der findes på
typeskiltet (se billede), og vælg
dit sprog.
Detaljerede oplysninger om
ecodesign kan downloades på:
www.bentone.com/ecodesign.
-fr
1. Manuels dans d’autres
langues
2. www.bentone.com\download
ou scannez le code QR.
3. Saisir le numéro d’article
du brûleur sur votre plaque
signalétique (consultez
l’illustration) et sélectionnez la
langue.
Des informations détaillées
sur l’écodesign peuvent être
téléchargées à l’adresse:
www.bentone.com/ecodesign.
-de
1. Gebrauchsanweisungen in
anderen Sprachen
2. www.bentone.com\download
oder scannen Sie den QR-Code.
3. Geben Sie die Artikelnummer
des Brenners auf Ihrem
Typenschild ein, (siehe Bild) und
wählen Sie die Sprache aus.
Detaillierte Informationen zum
Ecodesign können unter
www.bentone.com/ecodesign
heruntergeladen werden.
2

3Bentone
General
Table of contents
1. Safety Information __________________________________ 4
2. Technical data ______________________________________ 7
2.1 Dimensions B 30 A______________________________ 7
2.3 Working field B 30 A ____________________________ 8
2.4 Settings for nozzle and air damper_________________ 8
2.2 Electrical specification EN 60335-2-102 ____________ 8
2.5 Setting of brake plate and air flow _________________ 9
2.6 Nozzle and pump pressure _______________________ 9
2.7 Burner installation_______________________________ 9
2.8 Nozzle table___________________________________ 10
2.9 Components __________________________________ 12
3. Installation ________________________________________ 13
3.1 General rules__________________________________ 13
4. Installation ________________________________________ 14
4.1 Handling and lifting instruktion ___________________ 14
4.2 Preparations for installatoin ______________________ 15
4.3 Distribution of oil_______________________________ 15
4.4 Electrical connection ___________________________ 15
4.5 Mounting of burner on boiler_____________________ 16
4.6 Check oil line seals_____________________________ 16
4.7 Air setting ____________________________________ 17
4.8 Brake plate adjustment _________________________ 17
4.9 Example of Basic settings _______________________ 18
5. Pump ____________________________________________ 19
5.1 SUNTEC AS __________________________________ 19
6. Service ___________________________________________ 25
6.1 Combustion device ____________________________ 25
6.2 Air dampers __________________________________ 26
6.3 Fan __________________________________________ 27
6.4 Replace oil pump ______________________________ 28
6.5 Vibrations_____________________________________ 29
7. Oil Burner Control__________________________________ 30
7.1 Wiring diagram _______________________________ 30
7.2 Function LMO14/24____________________________ 31
7.3 Colour codes LMO14/24________________________ 32
7.4 Fault codes LMO14/24 _________________________ 32
8. Replacement of electrical components_______________ 33
9. Fault Location _____________________________________ 34
9.1 Burner will not start ____________________________ 34
9.2 Burner will not start after normal use ______________ 34
9.3 Delayed ignition _______________________________ 35
9.4 Noise in pump_________________________________ 35
9.5 Pump pressure ________________________________ 36
10. Log of flue gas analysis_____________________________ 37

4Bentone
1. Safety Information
This Installation and Maintenance manual:
• is to be regarded as part of the burner and must always be kept near
the installation site.
• is intended for use by authorised personnel.
• must be read prior to installation.
• must be observed by all who work with the burner and associated
system components.
• work with the burner may only be carried out by certified installers/
personnel.
• Enertech AB is not liable for any typographical errors and reserves the
right to make design changes without prior notice.
• The burner may only be used for its intended purpose in accordance
with the product’s technical data.
• The burner may only be installed and operated by authorised
personnel.
• The product is packaged to prevent damage from occurring during
handling. Handle the product with care. Lifting equipment must be
used to lift larger packages.
• The products must be transported/stored on a level surface in a dry
environment, max. 80% relative humidity, no condensation.
Temperature -20 to +60 °C.
• Check that the burner is compatible with the boiler’s output range.
• The label information on the rating plate refers to the burner’s minimum
and maximum power.
• The power data on the type sign refers to the burner’s min. and max.
power.
• All components must be installed without being bent, twisted or
subjected to mechanical or thermal forces which can affect the
components.
• The burner must be installed so that it complies with local regulations
for fire safety, electrical safety, and fuel distribution.
• Make sure when installing the equipment that there is enough space to
service the burner.
• Permitted ambient temperature during operation -0 to +60 °C. Max
80% relative humidity, no condensation.
• The installer must ensure that the room has adequate air supply.
• The room must comply with local regulations pertaining to its intended
use.
• The installation site must be free of chemicals.
• Burner pipes, fan wheels and air dampers may contain sharp edges.
• The surface temperature of the burner’s components can exceed
60°C.
• Caution: The burner has moving parts, and there is risk of crushing
injuries.
165 105 01

5Bentone
• The electrical installation must be professionally carried out in
accordance with applicable high voltage regulations, as per Enertech’s
recommendations.
• Before servicing, shut off the fuel supply and turn off the power to the
burner.
• Leak checks must be performed during installation and servicing to
prevent fuel leakage.
• Care should be taken by the installer to ensure that no electrical cables
or fuel lines are crushed or otherwise damaged during installation or
servicing.
• If the boiler is equipped with an access hatch, this must be equipped
with a hatch opening switch connected to the burner's safety system.
• When in operation, the burner’s noise level can exceed 85 dBA.
Use hearing protection.
• The burner must not be put into operation without proper safety and
protection devices.
• A Class BE fire extinguisher is recommended.
• It is forbidden to alter the design or use accessories which have not
been approved by Enertech in writing.
• Prior to operation, the following points must be checked:
-fitting and installation work has been completed and approved.
-electrical installation has been correctly performed.
-flue gas ducts and combustion air ducts are not blocked.
-all actuators and control and safety devices are in working order and
correctly set.
• After commissioning, if a steady red light on the burner control is
displayed, contact your installation technician.

6Bentone
Components Service life – Recommended
replacement
Service life – Recommended
replacement Operating cycles
Control system 10 years 250 000 cycles
Pressure switch 10 years 250 000 cycles
Flame guard 10 years 250 000 cycles
UV flame sensor 10 000 hrs N/A
Damper motor 500 000 cycles
Contaktor 10 years 500 000 cycles
Burner 1 year 3000 hrs
Filter 1 year 3000 hrs Change
Oilhose 1 year Control/change
Nozzle 1 year Change 3000 hrs Change
Electrods 1 year Change/cleaning 3000 hrs Change/cleaning
Brake plate 1 year Change/cleaning 3000 hrs Change/cleaning
Motor 1 year 3000 hrs
Cuppling chaft 1 year Control/change 3000 hrs Control/change
Fan wheel “1 year Change when dirty /
unbalance”
“3000 hrs Change when dirty /
unbalance”
Oil filter 1 year 3000 hrs Change
Oil valve Tightness check 1 year Replacement in case of leakage
The burner and its components must be recycled according to applicable regulations.
Burner servicing schedule
Servicing must be carried out once a year or after 3000 hours of operation.
Component replacement intervals
Delivery check
• Make sure everything is delivered and the goods have not been
damaged during transit.
• If something is wrong with a delivery, report it to the supplier.
• Transport damage must be reported to the shipping company.

7Bentone
165 405 05
2. Technical data
The burner is intended for:
• operation with boiler according to EN 303 and EN 267.
When operating with a hot air boiler, LMO24/44.255 C2E must be used.
Fuels:
• Fuel oil according to DIN 51603-1.
• Fuel oil A Bio 10 according to DIN 51603-6.
2.1 Dimensions B 30 A
* Min. recommended distance to floor.
A Ø B Ø C D E F G H I * J
B 30 A 187/315 108 108 372 220 281 303 188 415 200
2.1.1 Dimensions flange
ø108
160-190
35
14
J
H
I
øB
øC
E
G
F
AD

8Bentone
2.3 Working field B 30 A
2.4 Settings for nozzle and air damper
-0,5
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
60 80 100 120 140 160 180 200
mbar
kW
6.0-17.0 kg/h
72-200 kW
160302-622
Type B 30 A
Electrical data, Control power 230V, 1~, 3.09A, 50/60Hz, IP20
Electrical data, Motor -
Max fuse rating 10A
Noise level 70dBA
Max operating current, see data plate.
2.2 Electrical specification EN 60335-2-102
0
20
40
60
80
100
0
2
4
6
8
1
0
75 100 125 150 175 200
160303-219
kW
Air settings
Nozzle assembly
Scale1
Burner output
Air2<˚
1Scale nozzle assembly and air damper without damper motor.
2
Settings air damper with damper motor.

9Bentone
Nozzle: 45° Solid/semisolid
60° Solid/semisolid
80° Solid/semisolid
Pump pressure 10 bar (10-15 bar) depending on pump model
Combustion device d1d2d3
B 30 A ø 110 M10 ø 160-200
Due to different furnace geometries and capacities, it is not possible to
recommend a nozzle model.
d1
d2
d3
!*NB It is important
that the spark does
not strike against the
brake plate or nozzle.
a b c d
B 30 A 2.5-3.5 7.0-9.0 1.0-2.0 5.0-6.0
a
b
c


d
2.5 Setting of brake plate and air flow
2.6 Nozzle and pump pressure
2.7 Burner installation
2.7.1 Hole patten
Make sure the hole pattern on the boiler is designed for burner flange.

10 Bentone
2.8 Nozzle table
10 11 12 13
Gph kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
1,00 3,72 44 38 3,90 46 40 4,08 48 42 4,24 50 43
1,10 4,09 48 42 4,29 51 44 4,48 53 46 4,67 55 48
1,20 4,47 53 46 4,68 55 48 4,89 58 50 5,09 60 52
1,25 4,65 55 47 4,88 58 50 5,10 60 52 5,30 63 54
1,35 5,02 59 51 5,27 62 54 5,50 65 56 5,73 68 58
1,50 5,58 66 57 5,85 69 60 6,11 72 62 6,36 75 65
1,65 6,14 73 63 6,44 76 66 6,73 80 69 7,00 83 71
1,75 6,51 77 66 6,83 81 70 7,14 85 73 7,42 88 76
2,00 7,45 88 76 7,81 93 80 8,16 97 83 8,49 101 87
2,25 8,38 99 85 8,78 104 90 9,18 109 94 9,55 113 97
2,50 9,31 110 95 9,76 116 100 10,19 121 104 10,61 126 108
2,75 10,24 121 104 10,73 127 109 11,21 133 114 11,67 138 119
3,00 11,16 132 114 11,71 139 119 12,23 145 125 12,73 151 130
3,50 13,03 154 133 13,66 162 139 14,27 169 146 14,85 176 151
4,00 14,89 176 152 15,62 185 159 16,31 193 166 16,97 201 173
4,50 16,75 199 171 17,57 208 179 18,35 218 187 19,10 226 195
5,00 18,62 220 190 19,52 231 199 20,39 242 208 21,22 252 216
5,50 20,48 243 209 21,47 255 219 22,43 266 229 23,34 277 238
6,00 22,34 265 228 23,42 278 239 24,47 290 250 24,46 302 260
6,50 24,20 287 247 25,37 301 259 26,51 314 270 27,58 327 281
7,00 26,06 309 266 27,33 324 279 28,55 339 291 29,70 352 303
7,50 27,92 331 285 29,28 347 299 30,59 363 312 31,83 377 325
8,00 29,79 353 304 31,23 370 318 32,63 387 333 33,95 403 346
8,50 31,65 375 323 33,18 393 338 34,66 411 353 36,07 428 368
9,00 33,59 398 343 35,14 417 358 63,71 435 374 38,19 453 389
9,50 35,37 419 361 37,09 440 378 38,74 549 395 40,31 478 411
10,00 37,23 441 380 39,04 463 398 40,78 484 416 42,44 503 433
11,00 40,96 486 418 42,94 509 438 44,86 532 457 46,68 554 476
12,00 44,68 530 456 46,85 556 478 48,94 580 499 50,92 604 519
14,00 52,12 618 531 54,65 648 557 57,10 677 582 59,41 705 606
16,00 59,57 706 607 62,46 741 637 65,26 774 666 67,90 805 692
18,00 67,02 795 683 70,27 833 717 73,41 871 749 76,39 906 779
20,00 74,47 883 759 78,08 926 796 81,57 967 832 84,87 1007 865
22,00 81,91 971 835 85,89 1019 876 89,73 1064 915 93,36 1107 952
24,00 89,36 1060 911 93,70 1111 956 97,88 1161 998 101,85 1208 1039
26,00 96,81 1148 987 101,50 1204 1035 106,04 1258 1081 110,33 1308 1168
Pump pressure bar
The table applies to oil with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3..

11Bentone
14 15 16 17
Gph kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
1,00 4,40 52 45 4,56 54 46 4,71 56 48 4,85 57 49
1,10 4,84 57 49 5,01 59 51 5,18 61 53 5,34 63 54
1,20 5,29 63 54 5,47 65 56 5,65 67 58 5,82 69 59
1,25 5,51 65 56 5,70 68 58 5,89 70 60 6,07 72 62
1,35 5,95 70 61 6,15 73 63 6,36 75 65 6,55 78 67
1,50 6,60 78 67 6,83 81 70 7,06 84 72 7,27 86 74
1,65 7,27 86 74 7,52 89 77 7,77 92 79 8,01 95 82
1,75 7,71 91 79 7,97 95 81 8,24 98 84 8,49 101 87
2,00 8,81 104 90 9,12 108 93 9,42 112 96 9,71 115 99
2,25 9,91 118 101 10,26 122 105 10,60 126 108 10,92 130 111
2,50 11,01 131 112 11,39 135 116 11,77 140 120 12,13 144 124
2,75 12,11 144 123 12,53 149 128 12,95 154 132 13,35 158 136
3,00 13,21 157 135 13,67 162 139 14,13 168 144 14,56 173 148
3,50 15,42 183 157 15,95 189 163 16,49 196 168 16,99 201 173
4,00 17,62 209 180 18,23 216 186 18,84 223 192 19,42 230 198
4,50 19,82 235 202 20,51 243 209 21,20 251 216 21,84 259 223
5,00 22,03 261 225 22,79 270 232 23,55 279 240 24,27 288 247
5,50 24,23 287 247 25,07 297 256 25,91 307 264 26,70 317 272
6,00 26,43 313 270 27,49 326 280 28,27 335 288 29,13 345 297
6,50 28,63 340 292 29,63 351 302 30,62 363 312 31,55 374 322
7,00 30,84 366 314 31,91 378 325 32,98 391 336 33,98 403 374
7,50 33,04 392 337 34,19 405 349 35,33 419 360 36,41 432 371
8,00 35,25 418 359 36,47 433 372 37,69 447 384 38,80 460 396
8,50 37,45 444 382 38,74 459 395 40,04 475 408 41,26 489 421
9,00 39,65 470 404 41,02 486 418 42,40 503 432 43,69 518 446
9,50 41,85 496 427 43,30 514 442 44,75 531 456 46,11 547 470
10,00 44,06 523 449 45,58 541 465 47,11 559 480 47,11 559 480
11,00 48,46 575 494 50,14 595 511 51,82 615 528 53,40 633 545
12,00 52,87 627 539 54,70 648 558 56,53 670 576 58,25 691 594
14,00 62,68 732 629 63,81 757 651 65,95 778 669 67,96 806 693
16,00 70,49 836 719 72,93 865 744 75,38 894 769 77,67 921 792
18,00 79,30 940 809 82,05 973 837 84,80 1006 865 87,38 1036 891
20,00 88,11 1045 899 91,17 1081 930 94,22 1117 961 97,09 1151 990
22,00 96,92 1149 988 100 1189 1023 104 1229 1057 107 1267 1089
24,00 106 1254 1078 109 1297 1116 113 1341 1153 116 1382 1188
26,00 115 1359 1168 119 1406 1209 122 1453 1249 126 1497 1287
Pump pressure bar
The table applies to oil with a viscosity of 4.4 mm2/s (cSt) at a density of 830 kg/m3..

12 Bentone
2.9 Components
1. Brake plate
2. Nozzle
3. Ignition electrodes
4. Nozzle line
5. Ignition cable
6. Ignition transformer
7. Bruner Control
8. Reset button
9. Cover, inspection glass
10. Fan wheel
11. Motor
12. Flame detector
13. Brake plate adjustment
14. Flame tube
15. Air damper adjustment
16. Air damper
17. Solenoid valve
18. Air intake
19. Pump

13Bentone
165 105 03-2
3. Installation
3.1 General rules
The installation of an oil burner should be carried out in accordance with
current regulations and instructions.
The supplier/installer of the burner must therefore be aware of all regulations
so that the installation meets the requirements of the local authorities.
Installation, assembly and adjustment must be performed to obtain the best
possible function. Only oil suitable for the burner should be used and then in
combination with a suitable oil filter mounted before the burner oil pump.
If the burner replaces an existing burner, the oil filter must be replaced or
cleaned.
3.1.1 Instructions
It is the installer’s responsibility to instruct the user in detail in the functions of
the burner and the entire system.
3.1.2 Inspection and maintenance
The system must be maintained at the interval specified in the service
schedule. If the burner is in a dirty environment, service should be done at
more frequent intervals.
3.1.3 Start up
To obtain the correct setting, flue gas analysis and temperature measurement
must be performed. There is otherwise a risk of soot formation, poor
efficiency or condensation precipitating in the chimney. Adjustment of the
system must take place at start-up. The temperature in the chimney must be
at least 60 °C at 0.5 m down in the chimney to prevent condensation.

14 Bentone
4. Installation
4.1 Handling and lifting instruktion
The lifting aid are available
as spare parts.

15Bentone
4.2 Preparations for installatoin
Check that the burner’s dimensions and capacity range match the current
boiler. The power data on the type sign refers to the burner’s min. and max.
power.
4.3 Distribution of oil
In order to achieve good reliability, it is important that the oil distribution
system is carried out correctly. Please note the following:
• Selection of pipe diameter, pipe length and height difference, (see
Pump instruction).
• Pipelines are laid with a minimal number of glands.
• The pipes are laid so that the oil supply hoses are not exposed to
tensile stresses or bend too much when the burner is swung out or
removed for service.
• The oil filter should be installed so that the filter cartridge can be easily
replaced or cleaned. Self-cleaning filters are recommended for higher
viscosity oils or oils that contain significant contaminants.
• Oil-affected parts shall be selected in materials that can withstand the
physical properties of the medium.
• When installing oil hoses, check that the inlet and return hoses are
fitted on the correct connection on the oil pump. The hoses must be
positioned so that they do not bend or become tensile.
• Bleed the oil system. The oil pump/oil preheater can be damaged by
running dry. The vacuum should not be less than 0.3 bar in the suction
line during start-up.
4.4 Electrical connection
• Before working with the electrical connection, the power must be
disconnected so that the installation is without power.
• Electrical connection must be made in accordance with current
regulations.
• Burners should be connected to an isolator switch.
• Connection must be made according to the wiring diagram, (see
Electrical equipment).
• Fuse is dimensioned as required.
!Be sure to fill the
burner oil system
before starting it for
the first time.
!If any electrical connection is used other than that recommended by Enertech,
there may be a danger of damage to property and personal injury.
!The oil filter must
be installed before
the burner’s oil
pump.

16 Bentone
165 105 47
4.5 Mounting of burner on boiler
1. Remove fan housing from burner flange.
2. Remove the brake disc from the oil line.
3. Install the selected nozzles, (see Technical data).
4. Install the brake disc on the oil line.
5. Remove the flame tube from the flange.
6. Install the flange with gasket on the boiler.
7. Install flame tube, be sure to install the drainage hole
downwards (not available on all flame tubes) so that any oil
spills can drain out.
8. Insulate between flame tube and boiler door for reduced heat
radiation.
9. Install the fan housing on the flange and lock with nuts.
10. Connect oil lines to the pump, (see Service).
11. Connect the burner electrically, (see Service).
4.6 Check oil line seals
When the burner has been installed and put into operation, the
tightness of the various coupling elements should be checked (A),
in case of leakage - retighten the coupling elements.
A
A

17Bentone
165 105 24-2
C
B
F E
4.7 Air setting
Set the control switch (S1) to the On position (I), loosen the screw (E) that
locks the knob for air damper adjustment. Adjust the position of the air
damper to the desired amount of air and lock the position of the damper with
screw (E). The position of the damper can be read on the damper scale (F).
Check air settings with flue gas analysis.
Excess air flue gases Max. % CO2
% O2% CO2Lambda 1.2
3–5 ≈12.5 15.4
Recommended excess air
4.8 Brake plate adjustment
The position of the brake plate must be adjusted to achieve as favorable
pressure drop across the brake plate as possible. Loosen screw (C) and
adjust the position of the brake plate with screw (B) for good combustion.

18 Bentone
165 105 13-3
Basic settings should only be seen as setting values to get burner to start
and establish flame. Once the burner has started and established flame, it is
necessary to adjust the settings so that they are adapted to the installation
and the fuel used.
4.9 Example of Basic settings
B 30 A
Burner output: 154 kW
Estimated nozzle output: 154 / 11.86* = 13.0 kg/h
(* Calorfic value Fuel oil = 11.86 kWh/kg)
This provides the following nozzle according to the nozzle table, (see
Technical data).
Nozzle: 3.50 Gph
Pump pressure: 10.0 bar
Setting values for 154 kW according to basic setting diagram, (see Technical
data).
Air setting: = 8.0
Insert setting: = 2.0

19Bentone
5. Pump
5.1 SUNTEC AS
Technical data AS47CK
One or two-pipe system
Viscosity range: 1-12 mm2/s
Pressure range: 7-14 bar
Rated voltage of coil: 220/240V 50/60 Hz
Oil temperature: max 60°C
Components
1. Suction line G 1/4”
2. Return line G 1/4”and internal
by-pass plug
3. Nozzle outlet G 1/8”
4. Pressure gauge port G 1/8”
5. Vacuum gauge port G 1/8”
6. Pressure adjustment






Technical data AS67C
One or two-pipe system
Viscosity range: 1-12 mm2/s
Pressure range: 10-15 bar
Rated voltage of coil: 220/240V 50/60 Hz
Oil temperature: max 60°C
165 105 20-2

20 Bentone
Applications for SUNTEC AS
The SUNTEC AS oil pump has a built in solenoid valve
which controls the regulator cut-off valve giving fast
cut-off and cut-on function independent of the rotational
speed.
Applications
Light oil, B10 heating oil/biofuel blend (as defined in DIN
V51603-6) and kerosene.
- One or two-pipe system.
Pump operating principle
The gear set draws oil from the tank through the built-
in filter and transfers it to the valve that regulates the
oil pressure to the nozzle line. All oil that does not go
through the nozzle line will be dumped through the valve
back to the return line in two pipe installation or, if it is a
one-pipe installation, back to suction port in the gear set.
In that case, the by-pass plug must be removed from the
return port, and the return port sealed by steel plug and
washer.
The solenoid valve of the AS pump is of the ”normally
opened” type.
When the solenoid valve is non-activated, the by-pass
channel between the pressure and return sides of the
valve is open. No pressure will then be built up to open
the valve; it does not matter which speed the gear set
has.
When the solenoid is activated, this by-pass channel is
closed and because of the full speed of the gear set, the
pressure necessary to open the valve will be built up very
rapidly, which gives a very sharp cut-on function.
Cut-off
When the burner stops, the solenoid opens the by-pass
at the same moment, which drains all the oil down to the
return, and the nozzle valve closes immediately.
This gives a very sharp cut-off function. The cut-on and
cut-off can be actuated regardless of motor speed and
have an extremely fast response.
When the solenoid is not activated, the torque
requirement is low up to full motor speed.
Bleeding
Bleeding of pumps with two-pipe systems takes place
automatically, but bleeding can be accelerated by
opening a pressure port.
On pumps with a single-pipe system, a pressure port
must be opened to empty the system of air.
Solenoid valve
open
Solenoid
valve closed
To nozzle
Pressure
adjustment
Shaft sealBack to
suction
By-pass
plug
inserted
By-pass plug
removed
Pressure gauge ports
Vacuum gauge
port
Return plugged Return Inlet
One pipe installation Two pipe installation
Gear-set
Oil under suction
Oil under pressure
By-passed oil
returned to tank,
or to suction