Bühler technologies BFP Series User manual

FluidControl
Installation and Operation Instructions
Original instructions
Circulation pumps
BFP
BE370001
02/2017
Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
E-Mail: [email protected]
Internet: www.buehler-technologies.com

Bühler Technologies GmbH, Harkortstr. 29, D-40880 Ratingen
Tel. [phone] / 49 89-0, Fax: [phone] / 49 89-20
Internet: www.buehler-technologies.com
E-Mail: [email protected]
Read this instruction carefully prior to installation and/or use. Pay at-
tention particularly to all advises and safety instructions to prevent in-
juries. Bühler Technologies can not be held responsible for misusing
the product or unreliable function due to unauthorised modifications.
All rights reserved. Bühler Technologies GmbH 2017
Document information
Document No.......................................................... BE370001
Version......................................................................... 02/2017

BFP
Contents
1 Introduction..................................................................................................................................................................................................................... 2
1.1 Intended use .........................................................................................................................................................................................................2
1.2 Scope of delivery..................................................................................................................................................................................................2
2 Safety instructions......................................................................................................................................................................................................... 3
2.1 Important advice................................................................................................................................................................................................. 3
2.2 General hazard warnings .................................................................................................................................................................................4
3 Transport and storage .................................................................................................................................................................................................. 5
4 Installation and connection ........................................................................................................................................................................................6
4.1 Requirements to the installation site............................................................................................................................................................6
4.2 Installing the unit................................................................................................................................................................................................6
4.2.1 Additional advices for units with pump....................................................................................................................................... 6
4.2.2 Installing swivel nuts in the fitting body ..................................................................................................................................... 6
4.3 Hydraulic connection ......................................................................................................................................................................................... 7
4.4 Electrical connections ........................................................................................................................................................................................ 7
5 Operation and control ..................................................................................................................................................................................................8
5.1 Before starting .....................................................................................................................................................................................................8
5.2 During starting ....................................................................................................................................................................................................8
6 Maintenance....................................................................................................................................................................................................................9
7 Service and repair.......................................................................................................................................................................................................... 11
7.1 Troubleshooting ................................................................................................................................................................................................. 11
8 Disposal............................................................................................................................................................................................................................12
9 Appendices......................................................................................................................................................................................................................13
9.1 Technical data .....................................................................................................................................................................................................13
9.1.1 BFP 5/BFP 8/BFP 15..............................................................................................................................................................................14
9.1.2 BFP 30/BFP 40 ...................................................................................................................................................................................... 15
9.1.3 BFP 60.....................................................................................................................................................................................................16
9.1.4 BFP 90..................................................................................................................................................................................................... 17
9.2 Screw torques ..................................................................................................................................................................................................... 18
9.3 Hose torques....................................................................................................................................................................................................... 18
9.4 Calculations ........................................................................................................................................................................................................ 18
9.4.1 Calculating viscosity ..........................................................................................................................................................................18
9.4.2 Table of operational viscosity for VG oil ......................................................................................................................................18
9.4.3 Calculating the pressure loss..........................................................................................................................................................19
9.5 Pressure loss in straight pipes....................................................................................................................................................................... 19
10 Attached documents....................................................................................................................................................................................................21
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1 Introduction
1.1 Intended use
BFP circulation pumps are suited for the transportation of oils in hydraulic and lubrication systems. Their scope is given by their
specifications. The use in other applications is not permitted without confirmation by Bühler Technologies GmbH.
1.2 Scope of delivery
– 1 x Circulation pump
– Product documentation
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2 Safety instructions
2.1 Important advice
Operation of the device is only valid if:
– the product is used under the conditions described in the installation- and operation instruction, the intended application
according to the type plate and the intended use. In case of unauthorized modifications done by the user Bühler Technolo-
gies GmbH can not be held responsible for any damage,
– when complying with the specifications and markings on the nameplates.
– the performance limits given in the datasheets and in the installation- and operation instruction are obeyed,
– monitoring devices and safety devices are installed properly,
– service and repair is carried out by Bühler Technologies GmbH,
– only original spare parts are used.
This manual is part of the equipment. The manufacturer keeps the right to modify specifications without advanced notice. Keep
this manual for later use.
Signal words for warnings
DANGER
Signal word for an imminent danger with high risk, resulting in severe injuries or death if not avoided.
WARNING
Signal word for a hazardous situation with medium risk, possibly resulting in severe injuries or death if not
avoided.
CAUTION
Signal word for a hazardous situation with low risk, resulting in damaged to the device or the property or
minor or medium injuries if not avoided.
NOTICE
Signal word for important information to the product.
Warning signs
In this manual, the following warning signs are used:
Warning against hazardous situations Warning against high pressure
Warning against electrical voltage General notice
Warning against hot surface Disconnect from mains
Warning against environmental hazard Wear protection gloves
Warning against potentially explosive atmo-
spheres
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2.2 General hazard warnings
The equipment must be installed by a professional familiar with the safety requirements and risks.
Be sure to observe the safety regulations and generally applicable rules of technology relevant for the installation site. Prevent
malfunctions and avoid personal injuries and property damage.
The operator of the system must ensure:
– Safety notices and operating instructions are available and observed,
– The respective national accident prevention regulations are observed,
– The permissible data and operational conditions are maintained,
– Safety guards are used and mandatory maintenance is performed,
– Legal regulations are observed during disposal.
– Nearby equipment is EMC protected, e.g. through shielding.
– The current and voltage supply for the aggregate has a (mains) separator with adequate switching capacity. National re-
quirements must be observed.
Maintenance, Repair
Please note during maintenance and repairs:
– Repairs to the unit must be performed by Bühler authorised personnel.
– Only perform conversion-, maintenance or installation work described in these operating and installation instructions.
– Always use genuine spare parts.
Always observe the applicable safety and operating regulations in the respective country of use when performing any type of
maintenance.
DANGER Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
CAUTION Hot surface
Burning hazard
Let the device cool down before maintaining.
CAUTION High pressure
Hazard of injury due to flung off parts or oil, environmental hazard due to oil.
a) Before starting any maintenance or repair to the oil circuit, make sure that the device
is depressurized. This applies to the locking screws as well.
b) Avoid environmental pollution (oil spills) during cleaning or maintenance of the oil
circuit.
c) Use drip pans.
DANGER Potentially explosive atmosphere
Explosion hazard if used in hazardous areas.
The device is not suitable for operation in hazardous areas with potentially explosive at-
mospheres.
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3 Transport and storage
The products should be transported only in its original packaging or a suitable replacement. Secure device for transportation.
When not in use, protect the equipment against moisture and heat. Keep it in a covered, dry and dust-free room at ambient
temperature.
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4 Installation and connection
4.1 Requirements to the installation site
Aggregate
The aggregate must be set up to allow for unobstructed air flow and adequate room for maintenance/repairs. When installed
outdoors, be sure to consider the motor protection rating (standard: IP 55) and ensure adequate protection from the weather.
4.2 Installing the unit
The aggregates are screwed in place at the attachment points using screws. Be sure the support structure is sized adequately. To
protect the system from damage, the connections must be stress free. We recommend using flexible hoses. Be sure the hose is
stable against negative pressure, e.g. steel wire reinforced. Avoid possible leaks in the circuit to prevent environmental dam-
ages. If necessary, use an oil pan. Protect the aggregate from mechanical impact.
4.2.1 Additional advices for units with pump
The distance from the pump to the reservoir should be as short as possible. Especially the suction pipe should be short and of
sufficient inner diameter.
We suggest mounting the pump in the same height as the liquid level. Mounting below the liquid level is possible as well.
If the aggregate can only be installed above this level, the pump will have a constant suction pressure of 0.4 bar (atmosphere).
Depending on the oil viscosity and temperature, this will result in a different suction lift. A difference in value of 2 m can be
used as a guide.
Until the oil is heated to operating temperature, a suction pressure of 0.6 bar is permissible temporarily.
The diameter of the intake pipe should not be smaller than specified in the data sheet. We recommend a max. flow rate of 1.5 m/
s.
When first starting up a hydraulic system with a long intake pipe can cause problems due to excess air in the intake pipe. In this
case we suggest filling the suction pipe with oil and using a suction valve without spring.
Oil is sprayed into the pump housing during the assembly process at our factory. This is necessary to seal the gerator from the
housing with an oil film. During extended periods of storage the pump housing may not have enough oil anymore to create this
oil film when switching on the pump. The pump may then completely lose suction. Before connecting the suction pipe we re-
commend spraying some oil into the pump housing to prevent this.
The pump may be exposed to max. 0.5 bar of pressure on the suction side.
4.2.2 Installing swivel nuts in the fitting body
Proceed as follows:
– Carefully slide the preinstalled pipe end into the 24° cone on the fitting body.
– Tighten the swivel nut until a considerable increase in force can be felt (fixed point).
– Use a suitable spanner to tighten the swivel nut a 1/12 turn more (30°) beyond the fixed point. A marker line on the swivel
nut and the fitting body facilitates observing the correct tightening angle.
Tube
A.D.
Thread Torque (Nm) for straight
screwed plug
Torque (Nm) sealing plug
6 G 1/8" 18 13
8 G 1/4" 35 30
10 G 1/4" 35 30
12 G 3/8" 70 60
15 G 1/2" 90 80
18 G 1/2" 90 80
22 G 3/4" 180 140
28 G 1" 310 200
35 G 1 1/4" 450 400
42 G 1 1/2" 540 450
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4.3 Hydraulic connection
Carry out the hydraulic connection as described in the attached data. Connect the lines stress and vibration free, so typically us-
ing hoses.
Be sure to use suitable lines (with regard to pressure, fluid resistance, environmental influences, fire) when connecting to the
hydraulic-, lubrication circuit. Tighten the hose lines with a suitable torque (see appendix).
Contaminated fluids impact the life of the fluid system, we therefore recommend a purity class of 23/19/13 per ISO 4406.
If your hydraulic system is equipped with control or shut-off valves, we recommend protecting the cooling system with a pres-
sure relief valve.
4.4 Electrical connections
DANGER Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
CAUTION Electrical voltage
Wrong mains voltage may damage the device.
Installation of the device shall be performed by trained staff only. Regard the voltage
given on the type plate. Make sure that the cables have sufficient strain relief.
Fusing
Fusing has to be done due to local standards!
Polarity
Take care of the directional rotation of the motor. The rotation direction is indicated on
the motor housing “M” and an arrow.
The direction of rotation can be changed by reversing any two phases.
Use the applicable local regulations to determine the safety values and the cross-sections of connection leads. The motor and, if
equipped, starting devices must be connected to protective earth.
Lead fuses protect the cables in case of a short circuit, but are not sufficient to protect the motor coils from burning due to over-
load. Therefore, install an adequate motor circuit breaker with high precision range of adjustment for thermal protection to pro-
tect the motor against overload and operation with two phases
Adjust the motor circuit breaker according to the nominal value specified on the type plate of the motor. Operation outside the
specified mains voltage and frequency range limits is prohibited.
Take appropriate measures to protect energised parts from being touched by persons and/or interference from foreign objects.
The operator of the equipment is responsible for ensuring lightning protection.
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5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
5.1 Before starting
– Check that all parts are free of damage. Do not put a damaged device into operation.
– Check the correct connections of oil and power circuits according to chapter "Installation and connection".
– Make sure that all valves or other parts in the cooling circuit, which have to be opened, are opened.
5.2 During starting
First, check that the pump rotates counter clockwise. The direction is marked on the pump housing with M and directional ar-
row.
CAUTION Hot surface
Burning hazard
Let the device cool down before maintaining.
CAUTION High pressure
Hazard of injury due to flung off parts or oil, environmental hazard due to oil.
a) Before starting any maintenance or repair to the oil circuit, make sure that the device
is depressurized. This applies to the locking screws as well.
b) Avoid environmental pollution (oil spills) during cleaning or maintenance of the oil
circuit.
c) Use drip pans.
Noise level
Our pump is supplied with a low noise. If the noise level increases significantly check if the suction line has the right dimension
and if the pump works in the appropriate temp/viscosity range. Ask Bühler Technologies GmbH for technical advice.
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6 Maintenance
During maintenance, remember:
– The equipment must be maintained by a professional familiar with the safety requirements and risks.
– Only perform maintenance work described in these operating and installation instructions.
– When performing maintenance of any type, observe the respective safety and operation regulations.
DANGER Electrical voltage
Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
CAUTION Hot surface
Burning hazard
Let the device cool down before maintaining.
CAUTION High pressure
Hazard of injury due to flung off parts or oil, environmental hazard due to oil.
a) Before starting any maintenance or repair to the oil circuit, make sure that the device
is depressurized. This applies to the locking screws as well.
b) Avoid environmental pollution (oil spills) during cleaning or maintenance of the oil
circuit.
c) Use drip pans.
Under normal operating conditions the aggregates are maintenance free. Preventive maintenance must therefore be routinely
carried out by the operating company.
When doing so, please pay attention to:
– Tight screw fittings,
– Tightness,
– Damage to the aggregate (replace damaged parts),
– Abnormal (unusual) noise and vibration,
– Check warning labels for legibility and damage.
Electrical connections must be checked annually by a licensed electrician.
The outer parts of the motor, especially the cooling fins and the cooling ducts must be kept as clean as possible to ensure suffi-
cient heat dissipation.
Keep in mind the protection class for dust and humidity. Cleaning the device with high pressure cleaners is only allowed if the
motor has the respective protection class.
The motor is equipped with on both sides with sealed ball bearings. The greasing is designed for the total lifetime. Maintenance
(subsequent greasing) is not necessary.
The motor bearings must be replaced by personnel authorized by Bühler only.
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Condensate drain holes at motors from manufacturer WEG
If the motor is used in surrounding with high humidity this could lead, depending on the ambient temperature, to formation of
condensate inside the motor housing. Specially at longer nonoperation period. The motors of WEG have a condensate drain plug
which can be used for draining off. Pull out the plug according to the pictures and push it then back. If the plug is not pushed
back or completely removed, the motor losses the IP degree of protection.
Condensate drain bore
(plug)
closed position open position plug
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7 Service and repair
This chapter contains information on troubleshooting and correction should an error occur during operation.
Repairs to the unit must be performed by Bühler authorised personnel.
Please contact our Service Department with any questions:
Tel.: [phone] or your agent
If the equipment is not functioning properly after correcting any malfunctions and switching on the power, it must be inspected
by the manufacturer. Please send the equipment inside suitable packaging to:
Bühler Technologies GmbH
- Reparatur/Service -
Harkortstraße 29
40880 Ratingen
Germany
Please also attached the completed and signed RMA decontamination statement to the packaging. We will otherwise be unable
to process your repair order.
You will find the form in the appendix of these instructions, or simply request it by e-mail: [email protected].
7.1 Troubleshooting
Problem / Failure Possible cause Solution
Oil flow not sufficient – Motor’s rotation direction wrong – Correct connection, see Electrical connections
– Motor doesn’t start – Correct connection, see Electrical connections
– Oil flow too low – Correct connection, see Electrical connections
– Oil circuit blocked – Open valves and cocks
– Suction pressure to high, therefore reduced oil
flow.
– Reduce suction height
– Back pressure in the pressure line too big. Mo-
tor will be overloaded and motor speed
braked down.
– Choose bigger nominal width of pressure line
No oil flow – Not enough oil inside pump housing due to
long standstill or storage, therefore no suc-
tion.
– Refill some oil into the pump housing before
connecting the suction hose
Pump too noisy – Suction pressure too high – Select suction hose with sufficient diameter
– Reduce suction height
Tab.1: Troubleshooting
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8 Disposal
Dispose of the parts in such a way that does not present a danger to other people’s heath or to the environment. Observe the
legal requirements in the country of use for the disposal of electrical components and oils and coolants.
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9 Appendices
9.1 Technical data
Technical Data
Pump housing: Anodised and impregnated cast aluminium
Gerotor: Sintered steel
Colour: Motor RAL 7024
Operating fluids: Mineral oils per DIN 51524
Operating oil temperature: max. 80 °C (higher temperatures on request)
Seal: Perbunan (NBR)
or Viton (FPM) on request
Ambient temperature: -15 °C to +40 °C
Electric motors
Voltage / Frequency
BFP 5-40:
BFP 60-90:
220/380V – 230/400V – 240/415V 50Hz
460V 60Hz
220/380 – 245/420V 50Hz
220/380 – 280/480V 60Hz
Thermal stability: Class of insulation F,
utilisation per Class B
Design: three-phase asynchronous squirrel-cage induction motor
totally enclosed, fan cooled
Protection class: IP55
on request: other voltages
higher motor power for higher viscosities
UL- or CSA-approved motors
higher protection class
The motors comply with standards
IEC 60034, IEC 60072, IEC 60085
Please also observe the operating manual for the motor! All pumps are supplied with cable gland inside the motor terminal
box. The total length and height of the pump may vary by motor make.
Pump selection information:
When selecting the pump model, choose the motor output according to the oil viscosity to be used. Motor output information
refers to the maximum oil viscosity at maximum operating pressure.
The BFP 5 to BFP 40 are also available as a special version with a 6 bar internal bypass valve for protection. This does not change
the dimensions.
Installation information:
The pump head of all pumps can be mounted turned in 90° increments to align with the line routing. Please note the offset
from the centre of the motor.
The connection threads are manufactured to ISO 228. The screw-in surfaces are finished and suitable for the use of soft seals. We
recommend using screwed plugs per ISO 1179-2.
Please note:
Especially note the dimension of the suction pipe. The cross-sections should not be smaller than specified. In most cases, loud
noise indicates the cross-section was reduced too much.
Please refer to the notices in the operating instructions.
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9.1.1 BFP 5/BFP 8/BFP 15
BFP 5-6-0.55kW BFP 8-4-0.75kW BFP15-4-0.75kW BFP15-4-1.1kW BFP15-4-1.5kW
Item number 3705055** 3708075IE3** 3715075IE3** 3715110IE3** 3715150IE3**
Motor power 0.55 kW 0.75 kW 0.75 kW 1.1 kW 1.5 kW
max. oil viscosity 1500 cSt 1500 cSt 300 cSt 1500 cSt 2000 cSt
at max. operating pressure 10 bar 10 bar 10 bar 10 bar 10 bar
Number of poles 6 4 4 4 4
max. power input (400 V/50 Hz)* approx. 1.5 A approx. 1.6 A approx. 1.6 A approx. 2.4 A approx. 3.2 A
Nominal delivery volume* 5.8 cm³/U 5.8 cm³/U 11.7 cm³/U 11.7 cm³/U 11.7 cm³/U
5.5 L/min 8 L/min 16 L/min 16 L/min 16 L/min
Suction side connection G1/2-DN16 G3/4/DN20 G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32
Pressure side connection G3/8-DN12 G1/2-DN16 G1-DN25 G1-DN25 G1-DN25
Suction pressure
for all models temporarily up to
-0.4 bar -0.4 bar -0.4 bar -0.4 bar -0.4 bar
-0.6 bar
Acoustic power per ISO3744* 52 dB(A) 56 dB(A) 59 dB(A) 59 dB(A) 59 dB(A)
Weight 18.5 kg 18.5 kg 18.1 kg 23.1 kg 27.1 kg
Dimensions
A 96.5 96.5 96.5 102.5 102.5
B 314 314 313 331 356
C 86 86 86 98 98
D 100 100 100 100 125
E 77 77 77 87 87
F 80 80 80 90 90
G 125 125 125 140 140
H 149 149 149 164 164
I 220 220 220 249 249
J 82 82 70 70 70
K 71 71 60 60 60
* For 60 Hz versions please multiply the delivery volume by a factor of 1.2. The acoustic emission increases by approx. 3 dB.
**Electr. motor per NEMA, UL, CSA, EAC approval
Inlet Outlet
Flow rate
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9.1.2 BFP 30/BFP 40
BFP 30-4-0.75kW BFP 30-4-1.1kW BFP30-4-1.5kW BFP40-4-1.1kW BFP40-4-1.5kW
Item number 3730075IE3** 3730110IE3** 3730150IE3** 3740110IE3** 3740150IE3**
Motor power 0.75 kW 1.1 kW 1.5 kW 1.1 kW 1.5 kW
max. oil viscosity 100 cSt 300 cSt 1000 cSt 100 cSt 700 cSt
at max. operating pressure 6 bar 8 bar 10 bar 6 bar 8 bar
Number of poles 4 4 4 4 4
max. power input (400 V/50 Hz)* approx. 1.6 A approx. 2.4 A approx. 3.2 A approx. 2.4 A approx. 3.2 A
Nominal delivery volume* 20.4 cm³/U 20.4 cm³/U 20.4 cm³/U 30.6 cm³/U 30.6 cm³/U
29 L/min 29 L/min 29 L/min 42 L/min 42 L/min
Suction side connection G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32
Pressure side connection G1-DN25 G1-DN25 G1-DN25 G1-DN25 G1-DN25
Suction pressure
for all models temporarily up to
-0.4 bar -0.4 bar -0.4 bar -0.4 bar -0.4 bar
-0.6 bar
Acoustic power per ISO3744* 61 dB(A) 61 dB(A) 61 dB(A) 62 dB(A) 62 dB(A)
Weight 18.8 kg 23.8 kg 28 kg 24.3 kg 28.3 kg
Dimensions
A 95 101 101 110.5 110.5
B 312 330 355 340 364
C 86 98 98 98 98
D 100 100 125 100 125
E 77 87 87 87 87
F 80 90 90 90 90
G 125 140 140 140 140
H 149 164 164 164 164
I 220 249 249 249 249
* For 60 Hz versions please multiply the delivery volume by a factor of 1.2. The acoustic emission increases by approx. 3 dB.
**Electr. motor per NEMA, UL, CSA, EAC approval
Inlet Outlet
Flow rate
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9.1.3 BFP 60
BFP 60-4-1.5 kW BFP 60-4-2.2kW BFP 60-4-3kW BFP 60-4-4kW
Item number 3760150IE3 3760220IE3 3760300IE3 3760400IE3
Motor power 1.5 kW 2.2 kW 3 kW 4 kW
max. oil viscosity 100 cSt 300 cSt 800 cSt 1500 cSt
at max. operating pressure 6 bar 8 bar 10 bar 8 bar
Number of poles 4 4 4 4
max. power input (400V/50Hz)* approx. 3.5 A approx. 4.6 A approx. 6.4 A approx. 8.0 A
Nominal delivery volume* 40.8 cm³/U 40.8 cm³/U 40.8 cm³/U 40.8 cm³/U
58 L/min 58 L/min 58 L/min 58 L/min
Suction side connection G1 1/2-DN40 G1 1/2-DN40 G1 1/2-DN40 G1 1/2-DN40
Pressure side connection G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32
Suction pressure
for all models temporarily up to
-0.4 bar -0.4 bar -0.4 bar -0.4 bar
-0.6 bar
Acoustic power per ISO3744* 64 dB(A) 64 dB(A) 64 dB(A) 64 dB(A)
Weight 20.9 kg 27.3 kg 31.5 kg 34.4 kg
Dimensions
A 150 172 172 179
B 412 455 455 477
C 106 112 112 127
D 125 140 140 140
E 87 97 97 109
F 90 100 100 112
G 140 160 160 190
H 175 200 200 226
I 230 255 255 278.5
J 10 12 12 12
* For 60 Hz versions please multiply the delivery volume by a factor of 1.2. The acoustic emission increases by approx. 3 dB.
Inlet Outlet
Flow rate
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9.1.4 BFP 90
BFP 90-4-1.5kW BFP 90-4-2.2 kW BFP 90-4-3kW BFP 90-4-4kW
Item number 3790150IE3 3790220IE3 3790300IE3 3790400IE3
Motor power 1.5 kW 2.2 kW 3 kW 4 kW
max. oil viscosity 46 cSt 100 cSt 300 cSt 1000 cSt
at max. operating pressure 6 bar 8 bar 8 bar 8 bar
Number of poles 4 4 4 4
max. power input (400V/50Hz)* approx. 3.5 A approx. 4.6 A approx. 6.4 A approx. 8.0 A
Nominal delivery volume* 61.2 cm³/U 61.2 cm³/U 61.2 cm³/U 61.2 cm³/U
88 L/min 88 L/min 88 L/min 88 L/min
Suction side connection G1 1/2-DN40 G1 1/2-DN40 G1 1/2-DN40 G1 1/2-DN40
Pressure side connection G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32 G1 1/4-DN32
Suction pressure
for all models temporarily up to
-0.4 bar -0.4 bar -0.4 bar -0.4 bar
-0.6 bar
Acoustic power per ISO3744* 65 dB(A) 65 dB(A) 65 dB(A) 65 dB(A)
Weight 21.9 kg 24.8 kg 24.8 kg 34.2 kg
Dimensions
A 162.5 184.5 184.5 191.5
B 445 483 500 511
C 104 105 122 126
D 125 140 140 140
E 87 97 97 109
F 90 100 100 112
G 140 160 160 190
H 175 198 198 222
J 226 248 248 276
K 10 12 12 12
* For 60 Hz versions please multiply the delivery volume by a factor of 1.2. The acoustic emission increases by approx. 3 dB.
Inlet Outlet
Flow rate
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9.2 Screw torques
Thread Torque (Nm)
M5 3
M6 5
M8 12
M10 23
M12 40
9.3 Hose torques
Connections/mounts Torque (Nm)
Hose connections DN20 180
Hose connections DN25 250
Hose connections DN32 350
9.4 Calculations
9.4.1 Calculating viscosity
Valid for VG-oil between 10 - 100 °C at an exactness from ± 5 %.
Definitions Example: oil VG 46
V40 oil viscosity at 40 °C in cst V40 46 cst
T temperature in °C T 25 °C
ʋviscosity in cst
9.4.2 Table of operational viscosity for VG oil
10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C
VG 46 264,45 131,96 73,58 46,00 29,13 20,04 14,43 10,78 8,32
VG 68 444,77 210,85 112,61 68,00 41,63 27,86 19,58 14,32 10,84
VG 220 2.120,17 861,60 404,31 220,00 121,71 74,99 49,00 33,61 24,01
VG 320 3.489,92 1.350,22 607,96 320,00 171,40 102,85 65,66 44,12 30,94
Viscosity given in cst (mm2/s)
18 Bühler Technologies GmbH BE370001 ◦ 02/2017