Bentone B55 Technical specifications

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178 000 66-3 2017-08–29
Installation- and maintenance instruction
B55,B65

3
Bentone B55/B65
Table of contents
1. GENERAL________________________________________________________________________________________________8
1.1 Description B55/B65__________________________________________________________________________8
2. TECHNICAL DATA ________________________________________________________________________________10
2.1 Type designation B55-2H/B55-2/B55-2R/B55-3R/
B65-2H/B65-2/B65-2R/B65-3R________________________________________________________10
2.2 Dimensions _____________________________________________________________________________________10
2.3 Recommended nozzle and pressure __________________________________________________10
2.4 Output range and nozzles recommended ___________________________________________10
2.5 Working field ___________________________________________________________________________________11
2.6 Nozzle table ____________________________________________________________________________________12
2.7 Nozzle table ____________________________________________________________________________________13
3. INSTALLATION______________________________________________________________________________________ 14
3.1 Acceptance inspection _____________________________________________________________________14
3.2 Preparations for installation _______________________________________________________________ 14
3.3 Distribution of oil ______________________________________________________________________________14
3.4 Electrical connections_______________________________________________________________________14
3.5 Choice of nozzle ______________________________________________________________________________ 14
3.6 Setting of the brake plate and air flow_________________________________________________14
3.7 Burner installation ____________________________________________________________________________15
3.7.1 Hole pattern _______________________________________________ 15
3.8 Installing the burner__________________________________________________________________________ 15
3.9 Oil lines ___________________________________________________________________________________________15
3.10 Electrical connections_______________________________________________________________________15
4. BASIC SETTINGS_________________________________________________________________________________ 16
4.1 Typical basic settings for B65-2H/B65-2
B65-2R/B65-3R ______________________________________________________________________________16
4.2 Set values for nozzle assembly B55 ___________________________________________________17
4.3 Set values for nozzle assembly B65 ___________________________________________________17
4.4 Set values for air damper B55 ___________________________________________________________17
4.5 Set values for air damper B65 ___________________________________________________________17
4.6 Nozzle assembly regulation – fixed brake plate____________________________________18
4.7 Nozzle assembly regulation – adjustable brake plate____________________________18
4.8 Hydraulic air adjustment ___________________________________________________________________18
4.9 Damper motor 2-Stage_____________________________________________________________________19
4.10 Damper motor 3-Stage_____________________________________________________________________20
5. MAINTENANCE ____________________________________________________________________________________21
5.1 Servicing the burner device ______________________________________________________________21
5.2 Adjusting the ignition electrodes and brake plate _________________________________21
5.3 Servicing the air damper ___________________________________________________________________22
5.4 Replacing the damper motor_____________________________________________________________22
5.5 Replacing the oil pump B55/B65 _______________________________________________________23

4Bentone B55/B65
General
6. INSTRUCTIONS PUMP________________________________________________________________________24
6.1 TYPE 95 & 125________________________________________________________________________________24
6.2 Components ___________________________________________________________________________________24
6.3 Mounting/dismounting by-pass plug _________________________________________________24
6.4 Purging___________________________________________________________________________________________24
6.5 Replacing the filter____________________________________________________________________________24
6.6 Function Danfoss RSA 95 - 125 ________________________________________________________25
6.7 Suction line tables____________________________________________________________________________26
7. ELECTRIC EQUIPMENT _____________________________________________________________________27
7.1 Wiring diagram LMO24.255...(B55-2H/B65-2H) __________________________________27
7.2 Wiring diagram LAL 1... (B55-2/B55-2R/B65-2/B65-2R)______________________32
7.2.1 List of components LAL 1... (B55-2/B55-2R/B65-2/B65-2R) ______ 33
7.2.2 Function LAL 1... ___________________________________________ 34
7.3 Wiring diagram LAL 1... (B55-3/B65-3)_______________________________________________35
7.4 Wiring diagram LAL 1... (B55-3/B65-3 med regulator R316T) _______________36
7.4.1 List of components LAL 1... (B55-3/B65-3 och B55-3/B65-3) _____ 37
7.4.2 Function LAL 1... ___________________________________________ 38
7.4.3 Control programme under fault conditions and lock-out indication LAL 1...
39
7.4.4 Technical data LAL 1... ______________________________________ 39
8. FAULT LOCATION ________________________________________________________________________________40
8.1 Burner will not start __________________________________________________________________________40
8.2 Burner will not start after normal use __________________________________________________40
8.3 Delayed ignition, burner starts; pulsation_____________________________________________40
9. DECLARATION OF CONFORMITY _____________________________________________________41

5
Bentone B55/B65
General

6Bentone B55/B65
General
Important to think about!
Read this manual
• This manual should be followed by anyone who for any reason performs
work on the installation or its component parts.
• The manual is especially intended for authorized personnel.
• The manu al is to be considered as part of the burner and must always
be kept in the vicinity of the installation site.
• Enertech recommends that the burner be shut down
when the oil tank
is filled, and for six hours thereafter, to reduce the risk of blockages.
Safety instructions
The electrical installation must be carried out according to the high voltage
provisions and be performed in a professional manner, so that the risk of oil
leakage, fire or personal injury is avoided
Warnings
• The manual must be read before installation and start-up.
• This manual should be followed by anyone who for any reason performs
work on the installation or its component parts.
• The manual is to be considered as part of the burner and must always
be kept in the vicinity of the installation site.
• Ensure that the fresh air inlet to the room where the burner is located is
always open.
• The burner may only be installed by authorized personnel.
• Check that the burner is suitable for the boiler type.
• The burner must be installed in accordance with local legislation
regarding electrical safety and fuel supply.
• The burner is designed for oil viscosities ranged between 1.2 and 8.0
cSt at 20°C.
• The burner must be protected by at most a 10 A fast-blow or 6.3 A
slow-blow fuse.
• No burner safety system may be disconnected.
• The installation engineer must ensure that the boiler room is supplied
with sufficient fresh air in accordance with local standards.
• Cut the power and shut-off the fuel supply before performing service.
• Enertech recommends that the burner be shut down when the oil tank
is filled, and for six hours thereafter, to reduce the risk of blockages.
• The external temperature of the burner’s component parts may exceed
60°C.
• Ensure that the burner is protected from water spills, as its design will
not withstand such.
• Oil filters should be used.
• Only use spare parts recommended by Enertech.
Varning
!

7
Bentone B55/B65
General
Electrical safety
• If any electrical connections are made other than those recommended
by Enertech, there is a risk of personal injury and equipment damage.
• The electrical installation must be carried out according to the high
voltage provisions and be performed in a professional manner, so that
the risk of oil leakage, fire or personal injury is avoided.
• The installation engineer must be especially careful to ensure that no
electrical wiring or oil lines are pinched or damaged during installation
or service
Assembly and Service
• If the boiler is equipped with an inspection hatch, the hatch should be
fitted with an interlock.
• Filters must be fitted to the oil supply line.
• Shut-off cocks must be fitted to the oil supply line.
• Oil lines must adhere to the current national standards of each respective
country.
Condensation in the flue
A modern burner works with lower surplus air and also often with smaller
nozzles than older types. This raises efficiency but also increases the risk of
condensation in the flue. The risk increases if the cross section of the flue
channel is too great. Flue gas temperatures should be above 60°C measured
0.5 m from the flue chimney.
If the burner is used together with a condensing boiler, working condensing,
the installation must have a chimney that manages this type of operating
conditions.
Measures to increase the temperature
• Insulate the flue in cold loft space.
• Install an insert flue.
• Install a Dragex draught stabilizer or equivalent (which dries and entilates
the flue during shutdown periods).
Adjusting the burner
In order to achieve correct adjustment flue gas analysis and temperature
measurements must be carried out. Otherwise there is a risk of soot build-
up, poor efficiency or condensate precipitation in the flue..

8Bentone B55/B65
General
1. GENERAL
1.1 Description B55/B65
31a 27a 26a 27b 25a 22 23a
21
123 4 5 17
13
34
33
32
12
11
14
15
20
35
Components
1. Flame cone
2. Brake plate
3. Nozzle
4. Nozzle assembly
5. Ignition electrodes
11. Switch l-ll
12. Indicating lamp Stage 2
13. Cover, inspection glass
14. Indicating lamp Stage 1
15. Switch 0-l
17. Electric panel
20. Motor
21. Locking device, flange
22. Solenoid valves
23a. Connecting pipe
25a. Solenoid valve bloc Stage 2
26a. Nozzle assembly adjustment
fixed
27a. Scale, air regulation
27b. Scale, nozzle assembly
31a. Adjustment device, air damper
32. Switch ll-lll
33. Indicating lamp Stage 3
34. Fuse
35. Damper motor

9
Bentone B55/B65
General
16
19 18 910 7
8
6
292425a
23a22
30
26a
27a
35
26b31b 22 27b
25a
23b
35 31b 26b 22 27b
25b
23b
35
Components
6. Ignition cablesr
7. Ignition transformer
8. Photocell
9. Control box
10. Front plate, relay base
16. Fan wheel
18. Contactor
19. Thermal overload protection
22. Solenoid valve
23a. Connecting pipe
23b. Hydraulic hose
24. Air intake
25a. Solenoid valve bloc Stage 2
25b. Solenoid valve bloc Stage 3
26a. Nozzle assembly adjustment
fixed
26b. Nozzle assembly adjustment
hydrauli
27a. Scale, air regulation
27b. Scale, Nozzle assembly
29. Air damper
30. Pump
31b. Adjustment device, Nozzle
assembly
35. Damper motor
Description B55/B65

10 Bentone B55/B65
General
2. TECHNICAL DATA
2.1 Type designation B55-2H/B55-2/B55-2R/B55-3R/
B65-2H/B65-2/B65-2R/B65-3R
2.2 Dimensions
2.3 Recommended nozzle
and pressure
Because of the different boiler types, combustion
chamber geometries and combustion chamber loads
that exist, it is not possible to specify a given spray
angle or spray pattern.It should be noted that the spray
angle and spray pattern will vary depending on the
pump pressure.
* The net calorific value of 11,86 kWh/kg for light oil has been used.
290
595 B 610
321
400
405
C
D
Nozzle
45°S Danfoss
45°B Danfoss
60°S Danfoss
60°B Danfoss
Pump pressure
4 bar (12 - 16 bar)
On burners equipped with hydraulic air control or
optimization the oil pressure should not be less than 14 bar.
Length of
burner tube
Flange
Measure B
Burner tube
Measure C
Burner tube
Measure D
B55
Standard 1 303 273 160 155
Standard 2 403 373 160 155
Standard 3 503 473 160 155
B65
Standard 1 288 258 200 155
Standard 2 388 358 200 155
Standard 3 488 458 200 155
2.4 Output range and nozzles recommended
Oljemängd Effekt Rekommenderat munstycke Rekommenderat
kg/h kW Mcal/h Vinkel Danfoss pumptryck
B55-2H, B55-2, B55-2R 14-67 166-795 143-685 45°-60° S, B 14 bar
B55-3R 14-64 166-759 143-654 45°-60° S, B 14 bar
B65-2H, B65-2, B65-2R 24-99 285-1174 246-1012 45°-60° S, B 14 bar
B65-3R 24-99 285-1174 246-1012 45°-60° S, B 14 bar

11
Bentone B55/B65
General
B55-2
14-67 kg/h
166-795 kW
B55-2R
B55-2H/B55-2
Measured (test)
2.5 Working field
B65
24-99kg/h
285-1174 kW
B65
Measured (test)
B55-3R
14-64 kg/h
166-759 kW
B55-3R
Measured (test)
200 300 400 600 700 800 900 1000
-2
6
8
12
14
Pressure in fire place mbar
Output range kW
2
0
4
10
500 1100 1200
Unbroken line is the approved
working field as per EN267.
Pressure in fire place mbar
Output range kW
100 200 300 400 500 600 700 800
-2
0
2
4
6
8
10
Output range kW
100 200 300 400 500 600 700 800
-2
0
2
4
6
8
10
Pressure in fire place mbar

12 Bentone B55/B65
General
2.6 Nozzle table
Pump pressure bar
Gph 10 11 12 13
kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
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 25,46 302 260
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
The table applies to oil with a viscosity of 4,4 mm2/s (cSt) with density 830 kg/m3

13
Bentone B55/B65
General
The table applies to oil with a viscosity of 4,4 mm2/s (cSt) with density 830 kg/m3
2.7 Nozzle table
Pump pressure bar
Gph 14 15 16 17
kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h kg/h kW Mcal/h
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 33,98 403 347
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

14 Bentone B55/B65
General
3. INSTALLATION
3.1 Acceptance inspection
Ensure that everything is delivered and that there is no transport damage. If
there is anything wrong with the delivery, please report it to the supplier. Any
transport damage should be reported to the forwarding company..
3.2 Preparations for installation
Ensure that the size and capacity range of the burner are suitable for the
boiler. Power data on the data plate refer to the minimum and maximum
power of the burner.
3.3 Distribution of oil
To ensure satisfactory operation it is essential that the oil distribution sys-tem
is correct.
Observe the following:
- See Pump instructions for choice of tube diameter, tube length
and height difference.
- 
- Fix the tubes so that the oil hoses are not subjected to tensile
stress or sharp bending when swinging out the burner or
removing it for service.
- 
replaced.
3.4 Electrical connections
The main power switch must be turned off before beginning electrical in-
stallation. If the boiler has a 7-pin and a 4-pin Eurostecker connector these
will often connect straight to the burner. If not, use the connectors supplied.
A 5-pin connector supplies the burner motor with a separate 3-phase supply.
See connection under the Electrical equipment heading.
!If another electrical connection is used than the one recommended by Bentone, there might be a risk of
material damage or personal injury.
3.5 Choice of nozzle
See under Technical Data: Recommended nozzle and table of nozzles.
3.6 Setting of the brake plate and air
flow
Basic burner settings can be made before commissioning as shown in the
diagram. See Basic settings. Note that these are just basic settings and must
be correctly adjusted when the burner has been started. Flue gas analysis
and soot measurement should be carried out at this time.

15
Bentone B55/B65
General
d2
d1
d3

E
Return line Suction line
 
3.7 Burner installation
3.7.1 Hole pattern
Check that the hole pattern on the boiler matches the pattern on the burner
flange.
Flame head d1d2d3
B55 (160)* 165 M12 (226)* 254-295
B65 (160)* 210 M12 (226)* 254-295
The hole pattern can be reduced if the burner pipe is fitted from the front and
the heels in the flange are ground off.
3.8 Installing the burner
1. Separate the burner body and the flange.
2. Fit the flange and gasket on the boiler.
3. Insulate between the burner pipe and boiler door to reduce heat
radiation.
4. Slide the burner body on to the guides.
5. Pull the brake plate off the oil pipe.
6. Fit the chosen nozzles (see Technical data).
7. Fit the brake plate and check the ignition electrodes (see Servicing the
burner).
8. Slide the burner together and secure it with the nuts (E).
3.9 Oil lines
1. Check the size of the oil line (see Pump instructions)
2. An oil filer (1/2”) must be fitted to the oil line. If an air trap is fitted then
the oil filter should be fitted to the oil line before the air trap.
3. With a single pipe system the return plug must be removed (see Pump
instructions).
4. When fitting oil hoses, check that the supply and return hoses are
connected to the right couplings on the oil pump. The hoses must be
positioned so that they are not subjected to tensile stress or sharp
bending.
5. Bleed the oil system. The oil pump will be damaged if it is run dry.
6. The vacuum in the suction line should not exceed 0.3 bar during
commissioning.
3.10 Electrical connections
1. Turn off the main power switch.
2. Connect the Eurostecker connectors (see Electrical equipment).
3. Check that the burner control switch (S1) is off.
4. Fit the Eurostecker connectors on the burner.
5. Turn on the main power switch.
6. Check the direction of rotation of the burner motor.

16 Bentone B55/B65
General
Choice of nozzle B65-2H/B65-2/B65-2R
Burner output 770 kW
Nozzle Stage 1 770 x 0,6 = 460 kW
460 / 11,86 = 38,8 kg/h
Nozzle Stage 2 770 x 0,4 = 310 kW
310 / 11,86 = 26,1 kg/h
According to the table of nozzles this gives the
following nozzles.
Stage 1 8,50 Gph
Stage 2 6,00 Gph
Pump pressure : 14 bar
Basic settings B65-2H
Nozzle assembly Stage 2 = 15
Air adjustment Stage 1 = 25°
Stage 2 = 65°
Each graduation on the scale corresponds to 10°
Basic settings B65-2
Power outputs and nozzle choice from example.
Nozzle assembly Steg 2 = 15
Damper motor Closed = 0° Blue cam
Stage 1 = 25° Orange cam
MV 2 = 50° Black cam
Stage 2 = 65° Red cam
The black cam for Stage 2 (MV 2) must be placed
between the cams for Stage 1 and Stage 2. The
positions of MV 2 are determined by the boiler
characteristics when switching between stages, but
for a basic setting the black cam should be placed in
the middle.
Basic settings B65-2R
Power outputs and nozzle choice from example
Nozzle assembly Stage 1 = 0
Stage 2 = 15
Damper motor Closed = 0° Blue cam
Stage 1 = 25° Orange cam
MV 2 = 50° Black cam
Stage 2 = 65° Red cam
The black cam for Stage 2 (MV 2) must be placed
between the cams for Stage 1 and Stage 2. The
positions of MV 2 are determined by the boiler
characteristics when switching between stages, but
for a basic setting the black cam should be placed in
the middle.
Choice of nozzle B65-3R
Burner output 880 kW
Nozzle 880 / 3 = 293 kW
293 / 11,86 = 24,7 kg/h
According to the table of nozzles this gives the
following nozzles:
Stage 1 5,50 Gph
Stage 2 5,50 Gph
Stage 3 5,50 Gph
Basic settings B65-3R
Power outputs and nozzle choice from example
Nozzle assembly Stage 1/2 = 5
Stage 3 = 20
Damper motor Stage 1 = 10° Blue cam
MV 2 = 30° Black cam
Stage 2 = 44° Orange cam
MV 3 = 60° Green cam
Stage 3 = 80° Red cam
The cams for Stage 2 (MV 2) and Stage 3 (MV 3) must
be placed between the cams for Stage 1 and Stage 2,
and between Stage 2 and Stage 3, respectively. The
positions of MV 2 and MV 3 are determined by the
boiler characteristics when switching between stages,
but for a basic setting the cams (MV2 and MV3)
should be placed in the middle.
4. BASIC SETTINGS
4.1 Typical basic settings for B65-2H/B65-2
B65-2R/B65-3R

17
Bentone B55/B65
General
4.2 Set values for nozzle assembly B55
4.3 Set values for nozzle assembly B65
4.4 Set values for air damper B55
4.5 Set values for air damper B65
Air, <° Air, <° Scale, nozzle assembly
Scale, nozzle assembly

18 Bentone B55/B65
General
4.6 Nozzle assembly regulation –
fixed brake plate
Nozzle assembly regulation is used to achieve the most favourable
pressure drop possible across the brake plate.
Nozzle assembly regulation should be adjusted for Stage 2 output
Adjustment
Adjust to the desired position on the scale (A) using the set screw (B)
(turning anti-clockwise reduces the pressure drop and moves the brake
plate outwards).
If pulsation occurs, the pressure drop across the brake plate can be alte-
red until pulsation stops.
4.7 Nozzle assembly regulation –
adjustable brake plate
Nozzle assembly regulation is used to achieve the most favourable
pressure drop possible across the brake plate for each output stage.
Two nozzles
Nozzle assembly regulation adjusts the position of the brake plate between
Stage 1 and Stage 2 by means of a hydraulic piston.
Three nozzles
Nozzle assembly regulation adjusts the position of the brake plate between
Stage 2 and Stage 3 by means of a hydraulic piston.
Low load
Undo the locking nut.
Adjust to the desired position on the scale (A) by sliding the plate to the
desired position. Tighten the locking nut (C).
High load
Adjust to the desired position on the scale (A) using the set screw (D)
(turning anti-clockwise reduces the pressure drop and moves the brake
plate outwards). If pulsation occurs, the pressure drop across the brake
plate can be alte-red until pulsation stops.
4.8 Hydraulic air adjustment
Stage 1
Set the control switch (S2) to low load (I). Undo the screw (E), turn the
damper to the desired position and retighten the screw (E).
Stage 2
Set the control switch (S2) to high load (I). Use the adjuster pin to screw
the sleeve (F) in (to reduce) or out (to increase). The position of the dam-
per can be read from the damper scale (G). Carry out flue gas analysis to
check the air settings
C AD
EF G
AB

19
Bentone B55/B65
General
4.9 Damper motor 2-Stage
Stage 2 (red)
Stage 1 (orange)
Closed damper (blue)
Solenoid valve Stage 2
(black)
Releasing button N.B.
The upper position is the standard
position
Stage 1
Adjust the operating switch to Stage
2 (II).
* Reduce the air volume: Turn
orange cam towards 0°.
* Increase the air volume: Turn
orange cam towards 90°.
Adjust the operating switch back to
low capacity and check.
Stage 2
Adjust the operating switch to Stage
1 (I).
* Reduce the air volume: Turn
red cam towards 0°.
* Increase the air volume: Turn
red cam towards 90°
If the red cam is moved, change
the black cam as much. Adjust the
operating switch back to Stage
2 and ensure that the correct air
volume has been obtained.
Closed
The blue cam is the limit position for
fully closed damper and it is normally
not necessary to change it.
Releasing
The damper motor can be released
using the white release button. This
feature simplifies replacement of the
damper motor.
To release Press down the
shaft and slide it
outwards until it
disengages from
the milled slot.
To engage. Slide the shaft
inwards and
release. Adjust
the position of the
motor so that the
cogs mesh with
each other.
The damper motor rotates the
damper between three preset
positions. These positions are
controlled at the motor by micro-
switches, the switching positions
of which are set using the coloured
cams. There is also a black cam,
which controls the activation of
solenoid valve 2.
If the air flow requires adjustment:
Remove the cover from the damper
motor and change the positions
of the cams by turning them with
the aid of the tool supplied. To
deactivate a cam while you are
turning it we recommend that you
switch to a different stage and
then switch back after adjustment
is complete in order to check the
result.

20 Bentone B55/B65
General
4.10 Damper motor 3-Stage
Releasing button
N.B. The upper position is the
standard position
Solenoid valve Stage 3 (green)
Solenoid valve Stage 2 (black)
Stage 3 (red)
Stage 2 (orange)
Stage 1 (blue)
The damper motor rotates the
damper between three preset
positions. These positions are
controlled at the motor by micro-
switches, the switching positions
of which are set using the coloured
cams. There is also a black cam,
which controls the activation of
solenoid valve 2 and a green one
which controls the activation of
solenoid valve 3.
If the air flow requires adjustment:
Remove the cover from the damper
motor and change the positions
of the cams by turning them with
the aid of the tool supplied. To
deactivate a cam while you are
turning it we recommend that you
switch to a different stage and
then switch back after adjustment
is complete in order to check the
result.
Stage 1
Adjust the operating switch to Stage
2 (II).
* Reduce the air volume: Turn
blue cam towards 0°.
* Increase the air volume: Turn
blue cam towards 90°.
Adjust the operating switch back to
Stage 1 and check.
Stage 2
Adjust the operating switch to Stage
1 (I).
* Reduce the air volume: Turn
orange cam towards 0°.
* Increase the air volume: Turn
orange cam towards 90°.
If the orange cam is moved, change
the black cam as much. Adjust the
opera-ting switch back to Stage
2 and ensure that the correct air
volume has been obtained.
Stage 3
Adjust the operating switch to Stage
2 (II).
* Reduce the air volume: Turn
red cam towards 0°.
* Increase the air volume: Turn
red cam towards 90°.
If the red cam is moved, change
the green cam as much. Adjust the
operating switch to Stage 3 (III) and
ensure that the correct air volume
has been obtained.
Releasing
The damper motor can be released
using the white release button. This
feature simplifies replacement of the
damper motor.
To release Press down the
shaft and slide it
outwards until it
disengages from
the milled slot.
To engage Slide the shaft
inwards and
release. Adjust
the position of the
motor so that the
cogs mesh with
each other..