Wilo BAC User manual

Wilo-BAC
Pioneering for You
2 133 933-Ed.02 / 2013-11-Wilo
de Einbau- und Betriebsanleitung
en Installation and operating instructions
fr Notice de montage et de mise en service
nl Inbouw- en bedieningsvoorschriften

Fig. 1:
Fig. 3:
HA
200 mm min.
100 mm min.
5
1
7 2
2%
6
4 3 7
12
13
Fig. 2:
8
734
6
272
A
4
11
10
9
5
HC
B
A(B)
3

de Einbau- und Betriebsanleitung 4
en Installation and operating instructions 18
fr Notice de montage et de mise en service 32
nl Inbouw- en bedieningsvoorschriften 48

English
18 WILO SE 11/2013
Installation and operating instructions
1General
About this document The language of the original operating instructions is English. All other
languages of these instructions are translations of the original oper-
ating instructions.
These installation and operating instructions are an integral part of
the product. They must be kept readily available at the place where
the product is installed. Strict adherence to these instructions is a
precondition for the proper use and correct operation of the product.
The installation and operating instructions correspond to the relevant
version of the product and the underlying safety regulations and
standards valid at the time of going to print.
EC declaration of conformity:
A copy of the EC declaration of conformity is a component of these
operating instructions.
If a technical modification is made on the designs named there with-
out our agreement or the declarations made in the installation and
operating instructions on the safety of the product/personnel are not
observed, this declaration loses its validity.
2Safety These operating instructions contain basic information which must
be adhered to during installation, operation and maintenance. For this
reason, these operating instructions must, without fail, be read by the
service technician and the responsible specialist/operator before
installation and commissioning.
It is not only the general safety instructions listed under the main
point “safety” that must be adhered to but also the special safety
instructions with danger symbols included under the following main
points.
2.1 Indication of instructions in the
operating instructions
Symbols General danger symbol
Danger from electrical voltage
NOTE
Signal words DANGER!
Acutely dangerous situation
Non-observance results in death or the most serious of injuries.
WARNING!
The user can suffer (serious) injuries. “Warning” implies that (seri-
ous) injury to persons is probable if this informationis disregarded.
CAUTION!
Thereisariskofdamagingtheproduct/unit.“Caution”impliesthat
damage to the product is likely if this information is disregarded.
NOTE:
Useful information on handling the product. It draws attention to
possible problems.

English
Installation and operating instructions Wilo-BAC 19
Information applied directly to the product, such as:
• Arrows indicating the direction of rotation,
• Identification for fluid connections,
• Rating plates and
• Warning stickers,
must be strictly complied with and kept in a fully legible condition.
2.2 Personnel qualifications The installation, operating and maintenance personnel must have the
appropriate qualifications for this work. The area of accountability,
responsibility and personnel monitoring are to be ensured by the
operator. If the personnel are not in possession of the necessary
knowledge, they are to be trained and instructed. This can be accom-
plished if necessary by the manufacturer of the product at the request
of the operator.
2.3 Danger in the event of non-
observance of the safety
instructions
Non-observance of the safety instructions can result in risk of injury
to persons and damage to the product/unit as well as environmental
hazards. Non-observance of the safety instructions results in the loss
of any claims to damages.
In particular, lack of care may lead to problems such as:
• Danger to persons from electrical, mechanical and bacteriological
influences.
• Pollution of the environment due to leakage of hazardous materials
• Damage to property
• Failure of important product/unit functions
• Failure of required maintenance and repair procedures
2.4 Safety consciousness on the job The safety instructions included in these installation and operating
instructions, the existing national regulations on accident prevention
together with any internal working, operating and safety regulations
of the operator are to be complied with.
2.5 Safety instructions for the operator This appliance is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of expe-
rience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not play with the
appliance.
• If hot or cold components on the product/unit cause hazards, meas-
ures must be taken by the customer to prevent them from being
touched.
• Guards which prevent moving components (such as the coupling)
from being touched must not be removed whilst the product is in
operation.
• Leakages (e.g. from a shaft seal) of hazardous fluids (e.g. explosive,
toxic or hot) must be led away so that no danger to persons or to the
environment arises. National statutory provisions are to be observed.
• Danger from electrical current must be eliminated. Local directives or
general directives [e.g. IEC, VDE etc.] and local power supply compa-
nies must be adhered to.
2.6 Safety instructions for installation
and maintenance work
The operator must ensure that all installation and maintenance work is
carried out by authorised and qualified personnel, who are sufficiently
informed from their own detailed study of the operating instructions.
Work on the product/unit must only be carried out when at a stand-
still. It is mandatory that the procedure described in the installation
and operating instructions for shutting down the product/unit be
complied with.

English
20 WILO SE 11/2013
Immediately on conclusion of the work, all safety and protective
devices must be put back in position and/or recommissioned.
2.7 Unauthorised modification and
manufacture of spare parts Unauthorised modification and manufacture of spare parts will put the safety of the product/personnel at risk and invalidate the state-
ments on safety made by the manufacturer.
Modifications to the product are only permissible after consultation
with the manufacturer. Original spare parts and accessories author-
ised by the manufacturer ensure safety. The use of other parts can
nullify the liability from the results of the usage.
2.8 Improper use The operating safety of the supplied product is only guaranteed when
used properly in accordance with the section in the operating instruc-
tions titled “Intended use”. The limit values must on no account fall
under or exceed those specified in the catalogue/data sheet.
3 Transport and interim storage
3.1 Shipping The pump is delivered from the factory packaged in a cardboard box
or secured to a pallet and protected against dust and moisture.
Transport inspection On arrival, inspect the pump immediately for any transport damage. If
damage is found, the necessary procedure involving the forwarding
agent must be taken within the specified period.
Storage Before installation, the pump must be kept dry, frost-free and pro-
tected from mechanical damage.
CAUTION! Risk of damage due to incorrect packaging!
Ifthepumpistransportedagainatalatertime,itmustbepackaged
so that it cannot be damaged during transport.
• Use the original packaging for this, or select equivalent packaging
Handling Handle the pump with care toavoid any damage of the product before
installing it.
3.2 Transport for installation/removal
purposes WARNING! Risk of personal injury! Improper transport can lead to personal injury.
• The pump must be transported using approved load-bearing
equipment(e.g.blockandtackle,crane,etc.).Thismustbesecured
to the pump flanges and, if necessary, to the external diameter of
the motor (protection against slipping is required!).
• Never stand underneath a suspended load.
• Make sure the pump is securely positioned and is stable during
storage and transport as well as prior to all installation and other
assembly work.
4 Intended use
Purpose BAC pumps are single-stage centrifugal pumps that are used for fluid
circulation in buildings, agriculture and industry.
Fields of application They may be used for:
• Cooling systems
• Cold and hot water systems
• Industrial water systems
• Industrial circulation systems

English
Installation and operating instructions Wilo-BAC 21
Restrictions The pumps are exclusively intended for installation and operation in
enclosed rooms. Typical installation locations are technical rooms
within the building with other domestic installations. No provision has
been made for direct installation of the device in rooms used for other
purposes (residential and work rooms).
The following is not permitted:
• Outdoor installation and operation outdoors
CAUTION! Risk of property damage!
Unpermitted substances in the fluid can destroy the pump. Abra-
sive solids (e.g. sand) increase pump wear.
Pumps without an Ex certificate are not suitable for use in poten-
tially explosive areas.
• The correct use of the pump/installation also includes following
these instructions.
• Any other use is considered to be incorrect use.
5 Product information
5.1 General Minimum efficiency index MEI:
The benchmark for most efficient water pumps is MEI ≥0,70.
NOTE
For detailed information on the MEI values of the pump types, see:
Wilo online catalogue, available at
www.wilo.com
The efficiency of a pump with a trimmed impeller is usually lower than
that of a pump with the full impeller diameter. The trimming of the
impeller will adapt the pump to a fixed duty point, leading to reduced
energy consumption. The minimum efficiency index (MEI) is based on
the full impeller diameter.
The operation of this water pump with variable duty points may be
more efficient and economic when controlled, for example, by the use
of a variable speed drive that matches the pump duty to the system.
Information on benchmark efficiency is available at
www.europump.org/efficiencycharts
5.2 Type key The type key consists of the following elements:
Beispiel: BAC 40-134/2,2/2-DM/R
BAC Bloc Air Conditioning
Single-stage horizontal pump in monobloc construc-
tion
40 Diameter of pressure port [mm]
-134 Impeller diameter [mm]
/2,2 Rated motor power P2[kW]
/2 Number of poles
-DM Three-phase
/R R = Victaulic coupling
S = Screwed connection

English
22 WILO SE 11/2013
5.3 Technical data
When ordering spare parts be sure to state all the information given
on the pump and motor type plates.
Fluids If water/glycol mixtures are used (or fluids with a viscosity other than
that of pure water), an increase in power consumption of the pump is
to be taken into account. Only use mixtures with corrosion inhibitors.
The respective manufacturer's instructions are to be observed.
• The fluid must be sediment-free.
• Wilo's approval must be obtained for use of other media.
• Mixtures with a proportion of glycol of > 10 % influence the Δp-v
pump curve and the flow calculation.
NOTE
Always read and follow the material safety data sheet for the fluid
being pumped!
5.4 Scope of delivery •PumpBAC
• Installation and operating instructions
5.5 Accessories Accessories must be ordered separately:
•Suctionkits
• Isolating valves
• Non-return valves
• Foot valve for strainer
Property Value Remarks
Pipe connections BAC 40.../S: Nominal diameter G2/G
1½ or Victaulic connec-
tions
BAC 40.../R: 60.3/48.3 mm
BAC 70.../R: 76.1/76.1 mm
Permissible min./max. fluid temperature -15 °C to +60 °C
Ambient temperature max. +40 °C
Permissible humidity < 95 %, non-condensing
Max. admissible operating pressure 6,5 bar
Max. admissible suction pressure 4,0 bar
Suction Head depends on NPSH value of the pump
Approved fluids Cooling/cold water
Water/glycol mixture up to 40 % vol.
Heating water according to VDI 2035
Other fluids on request
Heating water up to +60 °C
Permissible chloride content of fluid Cl <150 mg/l
Viscosity of fluid 1 cSt bis 50 cSt
pH values of fluid 6 bis 8
Permissible solid grain size in medium Ø max. 0,5 mm
Motor efficiency IE2 for 3-phase motor according to
IEC 60034-30
Protection class IP 55
Insulation class F
Electrical connection Electrical voltage and frequency see
rating plate of motor
Voltage tolerance ±10%
Section of the power cable
(cable with 4 wires)
0,75/1,1 kW: 1,5 mm2- 2,5 mm2
1,5/2,2/3/4 kW: 2,5 mm2- 4,0 mm2
Acoustic pressure level 68 dB(A) Value at 50 Hz

English
Installation and operating instructions Wilo-BAC 23
• Bladder or galvanised tanks
• Vibrationless sleeves
• Motor protection circuit-breaker
• Dry-running protection
• Device for ON/OFF control and dry-running protection
• Victaulic coupling typ
6Descriptionandfunction
6.1 Product description Legend, see (Fig. 1/2):
1 Foot valve for strainer (max. passage cross-section of 1 mm)
2 Pump suction valve
3 Pump discharge valve
4 Non-return valve
5 Filling plug
6 Drain plug
7 Pipe support
8Strainer
9 Storage tank
10 Town water supply
11 Motor protection relay for three-phase motor
HA Suction head
HC Discharge head
6.2 Design of product BAC pumps are non self-priming, single-stage centrifugal pumps in a
horizontal monobloc construction. The suction port is arranged in an
axial orientation and the pressure port is arranged in a radial orienta-
tion. They are equipped with an air cooled motor. The pump housing
is made of composite, and depending on the power, the pumps are
fitted with “Victaulic” and/or threaded unions. The shaft is sealed
with a mechanical seal that does not need any maintenance..
7 Installation and electrical
connection
Safety DANGER! Danger of death!
Incorrect installation and improper electrical connections can
result in a risk of fatal injury.
• Have the electrical connections established by approved electri-
cians only, in compliance with the applicable regulations.
• Accident prevention regulations must be observed!
CAUTION! Risk of property damage!
Danger of damage due to incorrect handling.
• Have the pump installed by qualified personnel only.
7.1 Commissioning • Unpack the pump and dispose of the packaging in an environmen-
tally-responsible manner.
7.2 Installation CAUTION! Risk of damage to the pump!
Dirt can cause pump failure.
• The pump should only be installed after completion of all welding
and soldering work and, if necessary, flushing of the pipe system.
WARNING! Risk of burns to the pump when body parts come into
contact with the pump!
Dependingon thepumpor system operatingconditions(fluid tem-
perature), the entire pump can become very hot.
• The pump must be positioned in a way that nobody will come into
contact with the hot pump surfaces during operation.

English
24 WILO SE 11/2013
WARNING! Risk of fall!
• The pump must be firmly fixed on the ground.
CAUTION! Risk of remaining parts in the pump!
• Remove all cover plugs from the pump housing before installation.
• The pump must be installed in an easily accessible position to facili-
tate inspection or replacement.
• The pumps must be protected from the weather and installed in a
frost/dust-free, well-ventilated atmosphere which is not potentially
explosive. The pump must not be installed outdoors.
• The air access to the motor fan must be free. There must be a mini-
mum distance of 0.3 m between the pump and the wall.
• Pumpe vorzugsweise auf einer glatten Zementoberfläche aufstellen.
• The pump must be fixed with at least two studs of Ø M8 or Ø M10,
depending on the pump.
• The motor is provided with a condensate drain (under the motor). The
drain is plugged in the factory to guarantee the IP55 protection. For
use in air-conditioning or cooling applications, this plug must be
removed to allow the evacuation of the condensate water.
NOTE
If the caps are removed, protection class IP 55 is no longer ensured!
7.3 Pipe connection
General
NOTE
A settling section must be provided before and after the pump, in the
form of a straight pipe. The length of this settling section should be at
least 5 x DN of the pump flange (Fig. 4). This measure serves to avoid
flow cavitation.
Connection variants There are two standard variants:
1 Pump in suction mode (Fig. 1)
2 Pump in pressure mode (Fig. 2), from storage tank (Fig. 2, Item 9)
or municipal water supply (Fig. 2, Item 10) with dry-running pro-
tection system.
CAUTION! Risk of possible damage of the pump!
Tightening of screws or bolts must not exceed 10daNm. Use of
impact wrench is prohibited.
• The circulation direction of the fluid is indicated on the pump housing.
• The pipes and pump must be free of mechanical stress when installed.
• The pump must be installed in a way that it does not carry the weight
of the pipework.
NOTE
It is recommended that isolation valves are installed on the suction
and pressure side of the pump.
• Use expansion rubbers to reduce noise and vibrations of the pump.
• Provide a suction pipe with a nominal cross-section which is at least
as large as the pump connection.
• A non-return valve can be fitted on the pressure pipe to protect the
pump against fluid hammer.
• For a direct connection to a public drinking water system, the suction
pipe must also have a non-return valve and a guard valve.
Fig.4: Settling sectionbeforeand after the
pump
r
5 x DN
d s
r ⬇2,5 · (d · 2s)

English
Installation and operating instructions Wilo-BAC 25
• For an indirect connection via a tank, the suction pipe must have a
strainer to keep any impurities out of the pump, as well as a non-
return valve.
• If the pump is operated in suction mode (Fig. 1):
immerse the strainer into the fluid (at least 200 mm) and, if necessary,
put weights on the flexible hose. Limit the length of the suction pipe
and avoid all features that cause losses of head (tapers, bends, etc.).
No air must get into this pipe which rises upwards (by 2%).
CAUTION Risk of leak!
The alignment of the pipes and the pump ports is important.
• Ifa“Victaulic”pipeunionisused,anangulardeviationof max.3°of
2’’ pumps is allowed, and an angular deviation of max. 2° of 3’’ od
pumps is allowed
• If screwed unions are used, the alignment of the pump ports must
nothaveanydeviationand the tighteningmustnotexceed4daNm.
• Carefully seal the pipes with suitable products.
Nominal connection diameter (DN) of the pump:
7.4 Electrical connection
Safety DANGER! Risk of fatal injury!
A fatal shock may occur if the electrical connection is not made
correctly.
• Only allow the electrical connection to be made by an electrician
approved by the local electricity supplier and in accordance with
the local regulations in force.
• Checktoensureallconnections(includingpotential-freecontacts)
are voltage-free.
• For a safe installation and operation, a proper grounding of the
pump to the grounding terminals of the power supply is required.
• Observe the installation and operating instructions for the acces-
sories!
• Make sure that the operating current, the voltage and the frequency
comply with the rating plate data of the motor.
• The pump must be connected to the power supply by a solid cable
that is equipped with a grounded plug-connection or a main power
switch.
• Three-phase motors must be connected to an approved safety
switch. The nominal current must correspond to the electrical data on
the rating plate of the motor.
• The supply cable must be laid in a way that it never touches the pipe-
work and/or the pump and motor housing.
• The pump/installation must be grounded in compliance with local
regulations. A ground fault interrupter can be used as an extra protec-
tion.
• The connection to the network must be in accordance with the con-
nection plan.
Port type Port ND (tapped):
Suction Discharge
Victaulic ≤2,2 kW 2" (Ø 60,3 mm) 11/2" (Ø48,3 mm)
Victaulic > 2,2 kW 3" od (Ø 76,1 mm) 3" od (Ø 76,1 mm)
Threaded ≤2,2 kW 2" (50-60 mm) 11/2" (40-49 mm)

English
26 WILO SE 11/2013
7.5 Operation with Wilo control devices The power of the pumps can be continuously controlled in combina-
tion with a control device (Wilo-VR-System or Wilo-CC-System).
This allows an optimised pump output in a given installation and is
also economically efficient.
7.6 Operation with frequency converter
(of other manufacturers) Motors from Wilo/Salmson can generally be operated with external frequency converters if these frequency converters comply with the
demands specified in the application guideline IEC /TS 60034-17 and
IEC/TS 60034-25.
The impulse voltage of the converter (without filter) must be below
the limiting curve shown in (Fig. 5).
This concerns the voltage at the motor terminals. This is not only
determined by the frequency converter, but also e.g. by the motor
cable used (type, cross-section, screening, length, ...
• Strictly follow the instructions provided by the manufacturer of the
frequency converter. The rise times and peak voltages for different
cable lengths are specified in the corresponding installation and oper-
ating instructions.
• Take to following points into account:
• use suitable cables with a sufficient cross-section (max. 5% voltage
loss)
• connect the correct screening according to the manufacturer's rec-
ommendation of the frequency converter
• pass data lines (e.g. PTC-evaluation) separately from the mains
cable
• possibly use of a sinusoidal filter (LC) in agreement with the manu-
facturer of the converter
Operation is possible from 12.5 Hz up to 50 Hz. In case of low fre-
quency operation, it is recommended to start with 50 Hz and then
turn down to the selected value.
8 Commissioning
8.1 System filling and venting CAUTION! Possible damage of the pump!
Dry running destroys the mechanical seal
• Make sure that the pump does not run dry.
• The system must be filled before starting the pump.
If a venting procedure is necessary (according to chapter 8.1.1 “Vent-
ing procedure – pump in pressure mode” on page 27 and chapter
8.1.2 “Venting procedure – pump in suction mode” on page 27),
observe the following instructions.
DANGER! Risk of burns or freezing to the pump when body parts
come into contact with the pump!
Dependingonthepumporsystemoperatingconditions(fluidtem-
perature), the entire pump can become very hot or very cold.
• Keep a safe distance during operation!
• Inthecaseofhighwatertemperaturesandsystempressures,allow
the pump to cool down before all work.
• Alwayswear protectiveclothing, protective gloves and protective
goggles when working.
WARNING! Danger due to extremely hot or extremely cold pressu-
rised fluid!
Depending on the temperature of the fluid and the system pres-
sure, when the vent screw is opened completely, extremely hot or
extremely cold fluid in liquid or vapour form may escape or shoot
out at high pressure.
• Always exercise caution when opening the venting plug.
Fig.5: Limitcurveforthepermittedimpulsevoltage
Upk (including voltage reflection and damping),
measured between the terminals of two branches,
depending on the rise time tr
0
0,4
0,8
1,2
1,6
2
2,4
0 0,2 0,4 0,6 0,8 1 1,2
t
r
[µs]
U
pk
[kV]
400V (IEC 60034-17)
500V (IEC 60034-25, Level A)
690V (IEC 60034-25, Level B)
1,56 kV
1,35 kV
2,15 kV

English
Installation and operating instructions Wilo-BAC 27
WARNING! Risk of injury!
If the pump/system is installed improperly, liquid may be ejected
during commissioning. Individual components may also become
loose.
• Keep a safe distance from the pump during commissioning.
• Wear protective clothing, protective gloves and protective gog-
gles.
8.1.1 Venting procedure – pump in
pressure mode See (Fig. 2):
• Close the discharge valve (Fig. 2, Item 3).
• Unscrew the filling plug (Fig. 2, Item 5) (on the upper part of hydrau-
lics).
• Open the suction valve slowly (Fig. 2, Item 2) and completely fill the
pump.
• Only screw the filling plug back in after water has flown out and all air
has been eliminated.
• Open the suction valve completely (Fig. 2, Item 2).
• Check if the direction of rotation is correct according to the arrow on
the pump housing by briefly starting the pump. If the direction of
rotation is not correct, invert 2 phases on the motor terminal board.
• Open the discharge valve (Fig. 2, Item 3).
8.1.2 Venting procedure – pump in
suction mode Two cases are possible.
First case, see (Fig. 1):
• Open the discharge valve (Fig. 1, Item 3).
• Open the suction valve (Fig. 1, Item 2).
• Unscrew the filling plug (Fig. 1, Item 5) (on the upper part of hydrau-
lics).
• Put a funnel into the port and slowly and completely fill the pump and
the suction pipe.
• Filling is complete when water has flown out and all air has been elim-
inated. Screw the plug back in.
• Check if the direction of rotation is correct according to the arrow on
the pump housing by briefly starting the pump. If the direction of
rotation is not correct, invert 2 phases on the motor terminal board.
Second case, see (Fig. 1/3):
• To make the filling process easier, install a vertical pipe (minimum
length 25 cm), fitted with a stopcock and a funnel, on the pump suc-
tion pipe (see Fig. 3)
• Open the discharge valve (Fig. 1, Item 3)
• Open the suction valve (Fig. 1, Item 2).
• Unscrew the filling plug (Fig. 1, Item 5) (on the upper part of the
hydraulics).
• Fill the pump and the suction pipe completely until water flows out.
• Close the stopcock (which can be left in place), remove the pipe, and
screw the filling plug back in.
CAUTION! Risk of wrong evacuation of air!
A check is always required in both cases mentioned above. After
screwing in again of the filling plug, it is necessary to:
• Start the motor by a brief impulse.
• Unscrew again the filling plug and complete the filling until the
final water level is reached in the pump.
• If necessary, repeat this operation.
• Check if the direction of rotation is correct according to the arrow on
the pump housing by briefly starting the pump. If the direction of
rotation is not correct, invert 2 phases on the motor terminal board.

English
28 WILO SE 11/2013
NOTE
To prevent the pump from accidentally priming while the full water
level has not been reached, we recommend protecting it with a suit-
able device (dry running protection or float switch).
8.2 Commissioning WARNING! Risk of injury!
• Installation must be designed in order that no one could be hurt in
case of fluid leakage (mechanical seal failure…).
CAUTION! Possible damage of the pump!
The pump must not be operatedat zero flow (closed discharge
valve) for more than ten minutes.
• We recommend establishing a minimum flow of about 10 % of the
rated capacity of the pump, to avoid the formation of a gas pocket.
• Use a pressure gauge to check the stability of the discharge pressure;
if it is unstable, vent the pump again or perform the filling operation.
CAUTION! Risk of motor overload!
• Check that the input current does not exceed the value marked on
the motor rating plate.
9 Maintenance/Service Maintenance and repairs may only be carried out by qualified
experts!
It is recommended to have the pump serviced and checked by Wilo-
Customer Service.
DANGER! Risk of fatal injury!
Thereisamortaldangerthroughshockwhenworkingonelectrical
equipment.
• Work on electrical equipment may only be done by electricians
approved by the local electricity supplier.
• Before working on electrical equipment, switch it off and prevent
it from being switched on again.
• Any damage to the connecting cable shouldalways be rectified by
a qualified electrician only.
• Follow the installation and operating instructions for the pump,
level control device and other accessories.
• After maintenance, all safety devices such as terminal box cover
that were removed must be reinstalled!
DANGER! Risk of fatal injury!
The pump itself and the parts of pump can be extremely heavy.
Falling parts pose a risk of cuts, crush injuries, bruises or impacts,
which may lead to death.
• Alwaysusesuitableliftingequipment andsecurepartsagainstfall-
ing.
• Never stand underneath a suspended load.
• Make sure the pump is securely positioned and is stable during
storage and transport as well as prior to all installation and other
assembly work.
DANGER! Risk of burns or freezing to the pump when body parts
come into contact with the pump!
Dependingonthepumporsystemoperatingconditions(fluidtem-
perature), the entire pump can become very hot or very cold.
• Keep a safe distance during operation!
• Inthecaseofhighwatertemperaturesandsystempressures,allow
the pump to cool down before all work.
• Alwayswear protectiveclothing, protective gloves and protective
goggles when working.
• No special servicing while the pump is in operation.

English
Installation and operating instructions Wilo-BAC 29
• Always keep the pump perfectly clean.
• To avoid any blocking of the shaft and the hydraulic system in frosty
periods, empty the pump by removing the drain plug (on the lower
part of hydraulic) and the filling plug. Screw the 2 plugs back in with-
out tightening them.
• If there is no risk of frost, do not drain the pump.
10 Faults, causes and remedies Only qualified personnel is allowed to repair. Observe the safety
instructions as described in chapter 9 “Maintenance/Service” on
page 28.
• If a fault cannot be remedied, contact a specialist, the after-sales
department or the nearest sales office.
Fault Cause Remedy
The Pump runs but no delivery Pump obstructed by the internal
parts
Check and clean the pump
Suction pipe obstructed Check and clean the pipe
Water level/suction pressure is insuf-
ficient
Fill the storage tank, vent the pump
The suction pressure is too low; this is
generally accompanied by cavitation
noise
Loss of head on suction or suction height
too great (check the NPSH of the pump
installed)
Wrong direction of rotation Invert two phase wires on the motor ter-
minal block or circuit-breaker
The supply voltage to the motor is
too low
Check the voltage and the wire sections
of the cable
The pump is vibrating The pump is installed loosely on its
foundation
Check and tighten completely the nuts of
the stud bolts
Foreign bodies inside the pump Have the pump dismantled and clean it
The pump runs with difficulty, dam-
aged bearing
Have the pump repaired by the after-
sales
Electrical connection of the pump is
wrong
Check and correct the pump connection
The pump overheats Voltage supply is too low Check the voltage on the terminals of the
motor; it should be within ±10 % of the
rated voltage
Particles obstructing the pump Have the pump dismantled and clean it
Ambient temperature above 40 °C The motor is designed to operate at an
ambient temperature of not more than
+40 °C, if necessary, install a cooling sys-
tem
The pump fails to run No power Check the power supply, fuses, cables
Turbine is blocked Clean the pump
Motor protection has triggered Check and adjust the motor protection
No sufficient flow The motor speed is not high enough
(caused by particles or too low volt-
age)
Clean the pump, check the electrical sup-
ply
The motor is defective Call the after-sales service, replace the
motor
Water level/suction pressure is insuf-
ficient
Fill the storage tank, vent the pump
Wrong direction of rotation Invert two phases wires on the motor ter-
minal block or circuit-breaker
Wear of the internal parts Have the pump repaired by the after-
sales service

English
30 WILO SE 11/2013
11 Spare parts Spare parts can be ordered from your local specialist and/or via Wilo
customer service.
To avoid queries and incorrect orders, all details on the rating plate
should be submitted for each order.
CAUTION! Risk of property damage!
Trouble-free pump operation can only be guaranteed when origi-
nal spare parts are used.
• Only use original Wilo spare parts.
• Each component is identified in the table below.
Information to be provided when ordering spare parts:
• Spare part number
• Name/description of the spare part
• All data on the pump and motor rating plate
NOTE:
List of genuine spare parts: see Wilo spare parts documentation.
Spare parts catalogue is available at: www.wilo.com.
12 Disposal Proper disposal and recycling of this product prevents damage to the
environment and risks to personal health.
Proper disposal requires the drainage and cleaning and the disman-
tling of the pump unit.
Lubricants must be collected. The pump components are to be sepa-
rated according to material (metal, plastic, electronics).
1. Use public or private disposal organisations when disposing of all
or part of the product.
2. For more information on proper disposal, please contact your local
council or waste disposal office or the supplier from whom you
obtained the product.
Subject to change without prior notice.
The motor protection triggers The setting of the thermal relay is too
low
Check the current with an amperemeter,
or set to the current rating marked on the
motor data plate
The voltage is too low Check that the conductor cross-sections
of the power cable are adequate
One phase is open-circuit Check it and, if necessary, replace the
power cable
Motor protection switch is defective Replace the motor protection switch
The motor is defective Call the after-sales service, replace the
motor
Flow rate too high because of too low
system resistance
Reduce pump on outlet side
The flow is irregular The suction height (HA) is exceeded Reread the installation conditions and
recommendations in this instruction
manual
The diameter of the suction pipe is
smaller than that of the pump
The suction pipe must have the same
diameter as the pump suction port
The strainer and suction pipe are par-
tially obstructed
Remove the filter and clean it
Fault Cause Remedy

D
EG – Konformitätserklärung
GB
EC – Declaration of conformity
F
Déclaration de conformité CE
(gemäß 2006/42/EG Anhang II,1A und 2004/108/EG Anhang IV,2,
according 2006/42/EC annex II,1A and 2004/108/EC annex IV,2,
conforme 2006/42/CE appendice II,1A et 2004/108/CE l’annexe IV,2)
Hiermit erklären wir, dass die Pumpenbauarten der Baureihe:
BAC
Herewith, we declare that the pump types of the series:
Par le présent, nous déclarons que les types de pompes de la série :
(
Die Seriennummer ist auf dem
Typenschild des Produktes nach Punkten b) & c) von §1.7.4.2 und §1.7.3 des Anhanges
I
der Maschinenrichtlinie angegeben. / The serial number is marked on the product site plate according to points b) & c) of
§1.7.4.2 and §1.7.3 of the annex I of the Mach
inery directive 2006/42/EC. / Le numéro de série est inscrit sur la plaque signalétique
du produit en accord avec les points b) & c) du §1.7.4.2 et du §1.7.3 de l’annexe I de la Directive Machines 2006/42/CE)
in der gelieferten Ausführung folgenden einschlägigen Bestimmungen entsprechen:
in their delivered state comply with the following relevant provisions:
sont conformes aux dispositions suivantes dont ils relèvent:
EG-Maschinenrichtlinie
2006/42/EG
EC-Machinery directive
Directive CE relative aux machines
Die Schutzziele
der Niederspannungsrichtlinie 2006/95/EG werden gemäß Anhang I, Nr. 1.5.1 der 2006/42/EG
Maschinenrichtlinie eingehalten.
/ The protection objectives of the low-voltage directive 2006/95/EC are
realized according annex
I, N
o. 1.5.1 of the EC-Machinery directive 2006/42/EC. / Les objectifs de protection de sécurité de la directive basse-tension
2006/95/CE sont respectés conformément à l’annexe I, no1.5.1 de la directive CE relatives aux machines 2006/42/CE.
Elektromagnetische Verträglichkeit - Richtlinie
2004/108/EG
Electromagnetic compatibility - directive
Directive compatibilité électromagnétique
Richtlinie energieverbrauchsrelevanter Produkte
2009/125/EG
Energy-related products - directive
Directive des produits liés à l’énergie
Die verwendeten 50Hz Induktionselektromotoren - Drehstrom, Käfigläufer, einstufig - entsprechen den Ökodesign -
Anforderungen der
Verordnung 640/2009 und der Verordnung 547/2012 für Wasserpumpen.
This applies according to eco
-design requirements of the regulation 640/2009
to the versions with an induction electric motor, squirrel
cage, three
-phase, single speed, running at 50 Hz and of the regulation 547/2012 for water pumps.
Qui s’applique suivant les exigences d’éco
-conception du règlement 640/2009 aux versions comportant un moteur électrique à
induction à cage d’écureuil, triphasé, mono-vitesse, fonctionnant à 50 Hz et, du règlement 547/2012 pour les pompes à eau,
und entsprechender nationaler Gesetzgebung,
and with the relevant national legislation,
et aux législations nationales les transposant,
angewendete harmonisierte Normen, insbesondere:
EN 809+A1
EN
ISO 12100
EN 60034
-1
EN 60204
-1
as well as following relevant harmonized standards:
ainsi qu’aux normes européennes harmonisées suivantes :
Bevollmächtigter für die Zusammenstellung der technischen Unterlagen ist:
Division Pumps and Systems
Quality Manager
–
PBU Multistage & Domestic
Pompes Salmson
80 Bd de l’Industrie
- BP0527
F-53005 Laval Cedex
Authorized representative for the completion of the technical documentation:
Personne autorisée à constituer le dossier technique est :
Dortmund, 15. Januar 2013
Holger HERCHENHEIN
Group Quality Manager
WILO SE
Nortkirchenstraße 100
44263 Dortmund
Germany
Document: 2117789.2
CE-AS-Sh. Nr. 4138791