Grundfos UNILIFT AP35B User manual

Unilift AP35B, AP50B
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Other languages
http://net.grundfos.com/qr/i/96004693

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Table of contents
Unilift AP35B, AP50B
English (GB)
Installation and operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
 (BG)
   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
eština (CZ)
Montážní a provozní návod. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Deutsch (DE)
Montage- und Betriebsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Dansk (DK)
Monterings- og driftsinstruktion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Eesti (EE)
Paigaldus- ja kasutusjuhend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Español (ES)
Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . . 69
Suomi (FI)
Asennus- ja käyttöohjeet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Français (FR)
Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
 (GR)
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Hrvatski (HR)
Montažne i pogonske upute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Magyar (HU)
Telepítési és üzemeltetési utasítás. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Italiano (IT)
Istruzioni di installazione e funzionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Lietuviškai (LT)
rengimo ir naudojimo instrukcija . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Latviešu (LV)
Uzstdšanas un ekspluatcijas instrukcija. . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Nederlands (NL)
Installatie- en bedieningsinstructies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Polski (PL)
Instrukcja montau i eksploatacji . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Português (PT)
Instruções de instalação e funcionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Table of contents
4
Unilift AP35B, AP50B
Român(RO)
Instruciuni de instalare i utilizare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Srpski (RS)
Uputstvo za instalaciju i rad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Svenska (SE)
Monterings- och driftsinstruktion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Slovensko (SI)
Navodila za montažo in obratovanje. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Slovenina (SK)
Návod na montáž a prevádzku . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Türkçe (TR)
Montaj ve kullanım kılavuzu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
 (UA)
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
中文 (CN)
安装和使用说明书 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Bahasa Indonesia (ID)
Petunjuk pengoperasian dan pemasangan . . . . . . . . . . . . . . . . . . . . . . . . . . 284
 (MK)
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
(AR)
   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Appendix. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316

English (GB)
5
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions
describe Grundfos Unilift AP35B and AP50B.
Sections 1-4 give the information necessary to be
able to unpack, install and start up the product in a
safe way.
Sections 5-9 give important information about the
product, as well as information on service, fault
finding and disposal of the product.
CONTENTS
Page 1. General information
1.1 Hazard statements
The symbols and hazard statements below may
appear in Grundfos installation and operating
instructions, safety instructions and service
instructions.
The hazard statements are structured in the
following way:
1. General information 5
1.1 Hazard statements 5
1.2 Notes 6
2. Receiving the product 6
2.1 Inspecting the product 6
3. Installing the product 6
3.1 Location 6
3.2 Mechanical installation 7
3.3 Electrical connection 9
3.4 Checking the direction of rotation 9
4. Starting up the product 10
5. Product introduction 10
5.1 Intended use 10
5.2 Pumped liquids 10
5.3 Identification 11
6. Servicing the product 12
6.1 Maintaining the product 12
6.2 Oil 12
6.3 Construction 12
6.4 Service kits 12
6.5 Contaminated pumps 12
7. Fault finding the product 13
8. Technical data 14
8.1 Storage temperature 14
8.2 Operating conditions 14
8.3 Sound pressure level 14
9. Disposing of the product 14
Read this document before installing the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not
be made by children without supervision.
DANGER
Indicates a hazardous situation which, if
not avoided, will result in death or serious
personal injury.
WARNING
Indicates a hazardous situation which, if
not avoided, could result in death or
serious personal injury.
CAUTION
Indicates a hazardous situation which, if
not avoided, could result in minor or
moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.

English (GB)
6
1.2 Notes
The symbols and notes below may appear in
Grundfos installation and operating instructions,
safety instructions and service instructions.
2. Receiving the product
2.1 Inspecting the product
Check that the product received is in accordance
with the order.
Check that the voltage and frequency of the product
match voltage and frequency of the installation site.
3. Installing the product
3.1 Location
3.1.1 Minimum space
The pit, basin or tank must be sized according to the
relation between the water flow to the pit, basin or
tank and the pump performance.
When the pump is installed in a permanent
installation with a float switch, the minimum
dimensions of the pit, basin or tank must be as
shown in fig. 1to ensure free movability of the float
switch. The float switch is set to the minimum free
cable length. See section 3.2.7 Adjusting the float
switch cable length.
Fig. 1 Minimum pit dimensions when the float
switch is set to the minimum free cable
length
Observe these instructions for explosion-
proof products.
A blue or grey circle with a white graphical
symbol indicates that an action must be
taken.
A red or grey circle with a diagonal bar,
possibly with a black graphical symbol,
indicates that an action must not be taken
or must be stopped.
If these instructions are not observed, it
may result in malfunction or damage to the
equipment.
Tips and advice that make the work easier.
WARNING
Falling objects
Death or serious personal injury
- Keep the product in a stable position
during unpacking.
- Wear personal protective equipment.
CAUTION
Toxic material
Minor or moderate personal injury
- The product will be classified as
contaminated if it has been used for a
liquid which is injurious to health or
toxic.
- Wear personal protective equipment.
Installation must be carried out by
specially trained persons and according to
local regulations.
According to EN 60335-2-41/A2:2010, this
product with 5 m of mains cable may be
used only for indoor applications.
Always have at least 3 m free cable above
liquid level. This limits the installation
depth to 7 m for pumps with 10 m cable
and to 2 m for pumps with 5 m cable.
TM03 4190 1806
550 mm
600 mm

English (GB)
7
3.2 Mechanical installation
3.2.1 Foundation
Place the pump on a plate or on bricks so that the
inlet strainer is free of sludge, mud or similar
materials. See fig. 2.
Fig. 2 Place the pump on a plate
3.2.2 Lifting the pump
Lift the pump using the pump handle. Do not lift the
pump by the power cable or by the outlet pipe or
hose.
If the pump is installed in a well or tank, lower and lift
it by means of a wire or chain fastened to the pump
handle.
3.2.3 Positioning the pump
The pump can be used in vertical or horizontal
position. See fig. 3.
During continuous operation, the motor and the
pump inlet must always be completely covered by
the pumped liquid.
During intermittent operation, the motor must always
be half submerged into the pumped liquid.
Fig. 3 Position of the pump
When the pipe or hose has been connected, place
the pump in its operating position.
Position the pump so that the pump inlet will not be
blocked or partly blocked by sludge, mud or similar
materials.
In the case of permanent installation, the pit must be
cleared of sludge, pebbles, etc. before the pump is
installed.
3.2.4 Pipe connection
For permanent installation, we recommend that you
fit a union, a non-return valve and an isolating valve
in the outlet pipe.
3.2.5 Installation on auto coupling
See figs A and B in Appendix.
Pumps for permanent installation can be installed on
a stationary auto coupling and operated completely
or partially submerged in the pumped liquid.
1. Drill mounting holes for guide rail bracket on the
inside of the pit and fasten the guide rail bracket
provisionally with two screws.
2. Place the auto coupling base unit on the bottom
of the pit. Use a plumb line to establish the
correct positioning. Fasten with heavy-duty
expansion bolts. If the bottom of the pit is
uneven, the auto-coupling base unit must be
supported so that it is level when being fastened.
3. Assemble the outlet line in accordance with the
generally accepted procedures and without
exposing the line to distortion or tension.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product.
- Make sure that the power supply cannot
be accidentally switched on.
CAUTION
Sharp element
Minor or moderate personal injury
- Wear personal protective equipment.
- Make sure that persons cannot come
into contact with the pump impeller.
Do not install the pump hanging from the
electric cable or the outlet pipe.
TM01 3597 4998
Do not pull or lift the product by the power
cable.
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TM03 4191 1806

English (GB)
8
4. Knock the guide rails on to the spigots of the
bottom part of the auto coupling. Bevel the inside
of the guide rails to facilitate installation. The
guide rails must fit tightly on the spigots. We
recommend 3/4" medium size pipes as guide
rails.
5. Adapt the length of the guide rails to fit precisely
the bracket at the top.
6. Unscrew the provisionally fastened guide rail
bracket, fit it on top of the guide rails and finally
fasten it firmly to the pit wall.
7. Clean out debris from the pit before lowering the
pump into the pit.
8. Fit the auto-coupling half on to the outlet of the
pump. Then slide the guide bar of this coupling
half between the guide rails and lower the pump
into the pit by means of a chain. When the pump
reaches the auto-coupling base unit, the pump
will automatically connect tightly.
9. Hang up the end of the chain on a suitable hook
at the top of the pit.
10. Adjust the length of the motor cable by coiling it
up on a relief fitting, so the cable is not damaged
during operation. Fasten the relief fitting to a
suitable bracket at the top of the pit. Make sure
that the cables are not sharply bent or pinched.
3.2.6 Free-standing installation
See fig. C in Appendix.
For free-standing installation of the pumps, fit a 90 °
elbow to the outlet. The pump can be installed with a
hose or rigid pipe and valves.
In order to facilitate service of the pump, fit a flexible
union or coupling to the outlet pipe for easy
separation.
If a hose is used, make sure that the hose does not
buckle and that the inside diameter of the hose
matches that of the outlet.
If a rigid pipe is used, the union or coupling, non-
return valve and isolating valve must be fitted in the
sequence mentioned, as seen from the pump side.
Lower the pump into the liquid.
If the pump is installed in muddy conditions or on
uneven ground, we recommend that you support the
pump on bricks.
3.2.7 Adjusting the float switch cable length
For pumps supplied with a float switch, the difference
in level between start and stop can be adjusted by
changing the free cable length between the float
switch and the pump handle.
• An increased free cable length will result in fewer
starts and stops and a large difference in level.
• A reduced free cable length will result in more
frequent starts and stops and a small difference
in level.
The stop level must be above the pump inlet to
prevent the pump from taking in air.
Fig. 4 Start and stop levels
The start and stop levels vary according to the cable
length.
Intermittent operation
During intermittent operation, the motor must always
be half submerged into the pumped liquid.
The pump is allowed to run for maximum 5 minutes
per 30 minutes without the motor being submerged
in the liquid.
Continuous operation
During continuous operation, the motor and the
pump inlet must always be completely covered by
the pumped liquid.
The guide rails must not have any axial
play as this would cause noise during
pump operation.
The end of the cable must not be
submerged, as water may penetrate
through the cable into the motor.
TM03 4192 1719
Unilift AP B start and stop levels [mm]
Cable length (L)
min. 100 mm
Cable length (L)
max. 300 mm
Start Stop Start Stop
500 300 550 150
Stop
Start
L

English (GB)
9
3.3 Electrical connection Make sure that the product is suitable for the supply
voltage and frequency available at the installation
site. Voltage and frequency are marked on the pump
nameplate.
The pump must be connected to an external main
switch. If the pump is not installed close to the
switch, the switch must be of a lockable type.
Three-phase pumps must be connected to an
external motor-protective circuit breaker with
differential release. The rated current of the motor-
protective circuit breaker must correspond to the
electrical data marked on the pump nameplate.
If a level switch is connected to a three-phase pump,
the motor-protective circuit breaker must be
magnetically operated.
Single-phase pumps incorporate thermal overload
protection and require no additional motor
protection.
3.4 Checking the direction of rotation
Three-phase pumps only
Check the direction of rotation every time the pump
is connected to a new installation.
1. Position the pump so that you can observe the
impeller.
2. Start the pump for a short period.
3. Observe the rotation of the impeller. The correct
direction of rotation is indicated by an arrow on
the top of the motor (clockwise when seen from
the bottom). If the impeller rotates in the wrong
direction, reverse the direction of rotation by
interchanging two of the phases to the motor.
If the pump is connected to a pipe system, check the
direction of rotation in this way:
1. Start the pump and check the quantity of water or
the pressure.
2. Stop the pump and interchange two of the
phases to the motor.
3. Start the pump and check the quantity of water or
the pressure.
4. Stop the pump.
5. Compare the results taken under points 1 and 3.
The largest quantity of water indicates the correct
direction of rotation.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product.
- Make sure that the power supply cannot
be accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
- The installation must be fitted with a
residual current device (RCD) with a
tripping current less than 30 mA.
DANGER
Electric shock
Death or serious personal injury
- Make sure that the power supply plug
delivered with the product is in
compliance with local regulations.
- The plug must have the same protective
earth (PE) connection system as the
power outlet. If not, use a suitable
adapter if allowed by local regulations.
DANGER
Electric shock
Death or serious personal injury
- Power cables without a plug must be
connected to a supply disconnecting
device incorporated in the fixed wiring
according to the local wiring rules.
All electrical connections must be carried
out by a qualified person in accordance
with local regulations.
Depending on local regulations, a pump
with minimum 10 m of mains cable must
be used if the pump is used as a portable
pump for different applications.
If the motor is overloaded, it will stop
automatically. When the motor has cooled
to normal temperature, it restarts
automatically.

English (GB)
10
4. Starting up the product
1. Before starting the pump, submerge the pump
inlet in the pumped liquid.
2. Open the isolating valve, if fitted, and check the
level switch setting.
5. Product introduction
Fig. 1 Unilift AP35B, AP50B
5.1 Intended use
The Grundfos Unilift AP pump is a single-stage
submersible pump designed for pumping
wastewater.
The pump is capable of pumping water which
contains a limited quantity of solids, however not
stones and similar materials, without being blocked
or damaged.
The pump is available for automatic as well as
manual operation and can be installed in a
permanent installation or used as a portable pump.
Permanent installation can be on a stationary auto
coupling or as a free-standing pump.
* Unilift AP50B is approved according to EN
12050-1 and can be used for toilet discharge if
local regulations allow the usage of a 50 mm free
passage Vortex pump.
Incorrect application of the pump, for example
resulting in blocking of the pump, and wear are not
covered by the warranty.
5.2 Pumped liquids
The pump is capable of pumping water containing a
limited quantity of spherical particles. Pumping of
spherical particles exceeding the maximum particle
size for the pump may block or damage the pump.
Maximum particle size: See section 8. Technical
data.
The pump is not suitable for these liquids:
• liquids containing long fibres
• inflammable liquids (oil, petrol, etc.)
• aggressive liquids.
• liquids containing solids exceeding the pump's
recommended maximum particle size.
DANGER
Electric shock
Death or serious personal injury
- Do not use the pump in swimming
pools, garden ponds or similar places if
there are people in the water.
The pump may be run briefly to check the
direction of rotation without being
submerged in the pumped liquid.
TM03 4189 1806
Handle with
clamp
Outlet
Inlet
Level switch
Applications Unilift
AP35B
Unilift
AP50B
Drainage of flooded cellars or
buildings 
Groundwater lowering 
Pumping of water from drain
water collecting pits 
Pumping of water from
surface water pits with inflow
from roof gutters, shafts,
tunnels, etc.

Emptying and filling of
swimming pools, ponds, pits
etc. 
Pumping of wastewater from
washing machines, baths,
sinks etc. from low-lying parts
of buildings up to sewer level

Pumping of fibre-containing
wastewater from laundries
and light industries 
Pumping of domestic
wastewater from septic tanks
and sludge treating systems 
Pumping of domestic
wastewater without discharge
from toilet rooms 
Pumping of domestic
wastewater with discharge
from toilet rooms *

English (GB)
11
5.3 Identification
5.3.1 Nameplate
Fig. 2 Nameplate example
5.3.2 Type key
TM07 4469 1719
Pos. Description
1 Product type
2 Product number
3 Supply voltage [V]
4 Maximum current [A]
5 Power input [kW]
6 Maximum flow rate [m3/h]
7 Approvals
8 ID number for EN standards
9 ID number for Safety Instruction
10 Factory code
11 Production code (YYWW)
12 Frequency [Hz]
13 Insulation class
14 Net weight [kg]
15 Maximum liquid temperature [°C]
16 Cosinus phi
17 Enclosure class
18 Maximum installation depth [m]
19 Nameplate layout
20 Speed [min-1]
21 Maximum head [m]
P3 0000
MADE IN HUNGARY
Imax: X,XX A N.wght: XX.X kg
P1: X,X kW n: XXXXmin-1
Qmax: XX m3/h Hmax: XX m
U: XxXXXV XX Hz
Prod. No: XXXXXXXX
Type: UNILIFT XXXX.XX.XX.XXX
Tmax: XX°C
Cos : X,XX
XX m
Class: F
IP 68
XXXXXXXX
XX XXXXX-X
DK-8850 Bjerringbro, Denmark
XXXXXXXX
9
19
21
20
18
17
16
15
14
13
12
1
2
3
4
5
6
7
8
10
11
Example Unilift AP 35 B. 50. 08. A 1 .V
Type range
Maximum solids size [mm]
Pump type:
[ ] = AP Pump
B = AP Basic
Nominal diameter of outlet port
Power output, P2/ 100 [W]
Level control:
A = Automatic operation with float switch
[ ] = Manual operation without float switch
Motor:
1 = Single-phase
3 = Three-phase
Impeller:
V = Vortex impeller

English (GB)
12
6. Servicing the product
1. If the pump has been used for liquids other than
clean water, flush the pump thoroughly with clean
water before carrying out maintenance and
service.
2. Rinse the pump parts in water after dismantling.
6.1 Maintaining the product
Check the pump and replace the oil once a year. If
the pump is used for pumping liquids containing
abrasive particles or it is operating continuously, the
pump must be checked at shorter intervals.
If the drained oil contains water or other impurities,
we recommend that you replace the shaft seal.
6.2 Oil
In the case of long operating time or continuous
operation, the oil must be replaced as follows:
The pump contains 78 ml non-poisonous oil.
Used oil must be disposed of in accordance with
local regulations.
6.3 Construction
The construction of the pump will appear from the
table below and fig. D in Appendix.
6.4 Service kits
6.5 Contaminated pumps
The product will be classified as contaminated if it
has been used for a liquid which is injurious to health
or toxic.
If you request Grundfos to service the product,
contact Grundfos with details about the pumped
liquid before returning the product for service.
Otherwise, Grundfos can refuse to accept the
product for service.
Any application for service must include details
about the pumped liquid.
Clean the product in the best possible way before
you return it.
Costs of returning the product are to be paid by the
customer.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product.
- Make sure that the power supply cannot
be accidentally switched on.
CAUTION
Sharp element
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Toxic material
Minor or moderate personal injury
- The product will be classified as
contaminated if it has been used for a
liquid which is injurious to health or
toxic.
- Wear personal protective equipment.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the product thoroughly with clean
water and rinse the parts in water after
dismantling.
- Wear personal protective equipment.
If the power cable or the level switch is
damaged, it must be replaced by a service
workshop authorised by Grundfos.
Service must be carried out by specially
trained persons.
Furthermore, all rules and regulations
covering safety, health and environment
must be observed.
Liquid
temperature
The oil must be replaced
after
20 °C 4500 operating hours
40 °C 3000 operating hours
Pos. Description
50 Pump housing
37a O-ring
49 Impeller
150 Motor with flange
66 Washer
84 Base
67 Lock nut
6Inletpart
105a Shaft seal
182 Level switch
Service kit Part number
Shaft seal, standard 96429307
Shaft seal, FKM 96429308
Oil 96010646
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the product thoroughly with clean
water and rinse the parts in water after
dismantling.
- Wear personal protective equipment.

English (GB)
13
7. Fault finding the product
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply before
starting any work on the product.
- Make sure that the power supply cannot
be accidentally switched on.
CAUTION
Sharp element
Minor or moderate personal injury
- Wear personal protective equipment.
CAUTION
Toxic material
Minor or moderate personal injury
- The product will be classified as
contaminated if it has been used for a
liquid which is injurious to health or
toxic.
- Wear personal protective equipment.
Fault Cause Remedy
1. The motor does not
start.
a) No power supply. Connect the power supply.
b) The pump was stopped by the level
switch. Adjust or replace the level switch.
c) The fuses have blown. Replace the fuses.
d) The motor protection or thermal relay
has tripped.
Wait until the motor protection
trips in again or reset the relay.
e) The impeller is blocked by impurities. Clean the impeller.
f) Short circuit in the cable or motor. Replace the defective part.
2. The motor protection
or thermal relay trips
after a short time of
operation.
a) The liquid temperature is too high. Use another pump type. Contact
your local Grundfos supplier or
sales support.
b) The impeller is blocked or partly
blocked by impurities. Clean the pump.
c) Phase failure. Call an electrician.
d) Too low voltage. Call an electrician.
e) The overload setting of the motor-
protective circuit breaker is too low. Adjust the setting.
f) Incorrect direction of rotation. See
section 3.4 Checking the direction of
rotation.
Reverse the direction of rotation.
3. The pump runs
constantly or gives too
little water.
a) The pump is partly blocked by
impurities. Clean the pump.
b) The outlet pipe or valve is partly
blocked by impurities. Clean the outlet pipe or valve.
c) The impeller is not properly fixed to the
shaft. Tighten the impeller.
d) Incorrect direction of rotation. See
section 3.4 Checking the direction of
rotation.
Reverse the direction of rotation.
e) Incorrect setting of the level switch. Adjust the level switch.
f) The pump is too small for the
application. Replace the pump.
g) The impeller is worn. Replace the impeller.

English (GB)
14
8. Technical data
8.1 Storage temperature
Down to -30 °C.
8.2 Operating conditions
8.3 Sound pressure level
The sound pressure level of the pump is lower than
the limiting values stated in the EC Council Directive
2006/42/EC relating to machinery.
9. Disposing of the product
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest
Grundfos company or service workshop.
The crossed-out wheelie bin symbol on
a product means that it must be
disposed of separately from household
waste. When a product marked with this
symbol reaches its end of life, take it to a
collection point designated by the local
waste disposal authorities. The separate collection
and recycling of such products will help protect the
environment and human health.
See also end-of-life information at
www.grundfos.com/product-recycling.
4. The pump runs but
gives no water.
a) The pump is blocked by impurities. Clean the pump.
b) The outlet pipe or valve is blocked by
impurities. Clean the outlet pipe or valve.
c) The impeller is not properly fixed to the
shaft. Tighten the impeller.
d) There is air in the pump. Vent the pump and the outlet
pipe.
e) The liquid level is too low. The pump
inlet is not completely submerged in
the pumped liquid.
Submerge the pump in the liquid
or adjust the level switch.
f) Pumps with float switch: The float
switch does not move freely.
Adjust the float switch. See
section 3.2.7 Adjusting the float
switch cable length.
Fault Cause Remedy
Minimum liquid
temperature 0 °C
Maximum liquid
temperature 40 °C
Installation depth Maximum 7 m below liquid
level
pH value 4-10
Density Maximum 1100 kg/m3
Viscosity Maximum 10 mm2/s
Maximum particle size
Max. spherical diameter:
Unilift AP35B: 35 mm
Unilift AP50B: 50 mm
Technical data See the pump nameplate.
Always have at least 3 m free cable above
liquid level. This limits the installation
depth to 7 m for pumps with 10 m cable
and to 2 m for pumps with 5 m cable.

 (BG)
15
 (BG)    
    
    
 Grundfos Unilift AP35B AP50B.
 1-4    
,     
  .
 5-9    
,   ,  
   .

.
1.  
1.1   

   ,
   
  Grundfos    
   
 -.
    
   :
1.   15
1.1     15
1.2  16
2.    16
2.1    16
3.    16
3.1  16
3.2   17
3.3   19
3.4      19
4.    20
5.   20
5.1    20
5.2   20
5.3  21
6.     22
6.1    22
6.2  22
6.3  22
6.4   22
6.5   23
7.    
 24
8.   25
8.1    25
8.2   25
8.3     25
9.    25
   
.  
    
  
   .
       
 8    
,   
     
,       
  
    
   
.
       
.   
     
     .

  , 
      
.

  , 
      
.

  , 
      
.
 
  
   
.
-   
.

 (BG)
16
1.2 
   ,
   
  Grundfos    
  -.
2.   
2.1   
    
 .
    
      
.
3.   
3.1 
3.1.1  
,      
   
   ,  
   .
   
  ,
   ,  
     
 . 1,       
 . 
    
   . . 
3.2.7 Регулиране на дължината на кабела на
поплавъковия превключвател.
. 1    ,
  
   
  
   
  .
      
,    
    
.
    
,   
, ,  
     
   .
    
     
 .
 ,  
.

 
   
-  
  .
-   .

 
      

-   
 ,   
,    
 .
-   .
    
    
 .
 EN 60335-2-41/A2:2010 
 5    
     
 .
     3 
    
.  
    7 
 10   2   5
.
TM03 4190 1806
550 mm
600 mm

 (BG)
17
3.2  
3.2.1 
      ,
       ,  
  . . . 2.
. 2    
3.2.2   
     . 
     
   .
     
,   
   ,  
  .
3.2.3   
       
 . . . 3.
    
        
    .
    
    
.
. 3   
     ,
   .
  ,   
       
,    .
      
   ,  ,  
  .
3.2.4  
     
 ,   
    .
3.2.5    
. . A B Appendix.
      
    
  ,     
  .
1.      
    
     
.
2.     
 .    ,
 .  
   .  
  , 
     ,   
,   .
3.   , 
 , ,    
    .

 
   
-    
,  .
.
-  ,  
     .

 
      

-   .
- ,    
    
  .
   ,   
    
 .
TM01 3597 4998
    
  .
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TM03 4191 1806

 (BG)
18
4.    
    
 . 
   ,   
.   
    
 .  3/4"
     
.
5.    
 ,      
 .
6.     
 ,    
    
    .
7.    ,  
  .
8.    
   .  
     
     
   .  
  , 
    .
9.       
     .
10.     
,     , 
       .
     
     .
 ,      
 .
3.2.6    
. . C Appendix.
      
 90 °    .
      
  .
      ,
     
    .
   ,  ,    
     
   .
    ,  
,   
      ,
  .
  .
       
 ,    
  .
3.2.7      
 
    
      
,      
     
 .
•     
 -   -
   .
•     
 -   
   .
       
 ,      .
. 4    
     
   .
 
    
    
.
     5
   30 ,    
 .
 
    
        
    .
     
  ,  
       
  .
      
  ,     
   .
TM03 4192 1719
     Unilift AP B
[mm]
  
(L)
. 100 mm
  
(L)
. 300 mm
   
500 300 550 150


L

 (BG)
19
3.3    ,    
   
,   .  
      
.
       
.     
 ,      
  .
      
      
 . 
      
    
 ,    
  .
    
  , 
       
 .
    
    
   .
3.4     
   
      
    .
1.   ,    
  .
2.       
 .
3.    
.     
      (
 ,   ). 
    
,     
      .
     ,
      :
1.   
   .
2.       
.
3.   
   .
4.  .
5.  ,   1 3.
-   
   .

 
   
-    
,  .
.
-  ,  
     .

 
   
-   
 -
 (RCD)   
 30 mA.

 
   
- ,   
   
   .
-    
   
(PE)   . 
 ,  
,    
 .

 
   
-   
     
 ,  
  
   
.
    
    
   
.
   ,
     -
 10  , 
     
  .
  ,   
.   
   , 
  .

 (BG)
20
4.   
1.    , 
   .
2.   ,  
,   
  .
5.  
. 1 Unilift AP35B, AP50B
5.1   
 Grundfos Unilift AP 
 ,   
  .
     
    
,     ,
     .
    
      
      
 .
     
     .
* Unilift AP50B   EN 12050-1 
       ,
   
    50 
 .
   , 
    ,  
  .
5.2  
      
    .
    -
       
  .
   : . 
8. Технически данни.
     :
•,   
•  (,  .)
• .
•,    -
   
  .

 
   
-   
,   
 ,    
.
      , 
     , 
   .
TM03 4189 1806
 




 
 Unilift
AP35B
Unilift
AP50B
  
   ●●
   
  ●●
   
  
 ●●
   
    
  , , 
.
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  
 , , 
.●●
   
  , ,
 .  
   
   
●●
   
    
  

●●
  
    
   

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  
   
   ●●
  
   
 
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