Grundfos Unilift AP12 User manual

Unilift AP12, AP35, AP50

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

Other languages

http://net.grundfos.com/qr/i/96011045

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions

These installation and operating instructions

describe Grundfos Unilift AP12, AP35 and AP50.

Sections 1-5 give the information necessary to be

able to unpack, install and start up the product in a

safe way.

Sections 6-10 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 2

1.1 Hazard statements 2

1.2 Notes 3

2. Receiving the product 3

2.1 Inspecting the product 3

3. Installing the product 3

3.1 Location 3

3.2 Mechanical installation 4

4. Electrical connection 5

4.1 Checking the direction of rotation 6

5. Starting up the product 6

6. Product introduction 6

6.1 Intended use 7

6.2 Pumped liquids 7

6.3 Identification 7

7. Servicing the product 8

7.1 Maintaining the product 9

7.2 Oil 9

7.3 Construction 9

7.4 Service kits 9

7.5 Contaminated pumps 9

8. Fault finding the product 10

9. Technical data 11

9.1 Storage temperature 11

9.2 Operating conditions 11

9.3 Sound pressure level 11

10. Disposing of the product 11

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)

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. 1 to ensure free movability of the float

switch. The float switch is set to the minimum free

cable length. See section 3.2.5 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 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.

TM00 2918 1697

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550 mm

600 mm

English (GB)

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. The outlet must be the highest point of the

pump. See fig. 3.

During operation, the inlet strainer must always be

completely covered by 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.

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.

- Unilift AP35, AP50: 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.

TM00 2922 0794

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Do not pull or lift the product by the power

cable.

TM00 2920 0794

English (GB)

3.2.5 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.

* Minimum stop level during continuous operation

or when using an external controller.

4. Electrical connection

TM00 2924 1719

Unilift AP start and stop levels

Minimum cable

length (L):

100 mm

Maximum cable

length (L):

250 mm

Pump

type

Start

[mm]

Stop

[mm]

Start

[mm]

Stop*

[mm]

AP12.40 360 230 370 100

AP12.50 410 250 380 110

AP35 440 280 450 155

AP50 460 320 450 190

Start

Stop

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.

English (GB)

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.

4.1 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 inlet strainer (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.

Compare the results taken under points 1 and 3. The

largest quantity of water indicates the correct

direction of rotation.

5. Starting up the product

1. Before starting the pump, check that the inlet

strainer is fitted to the pump and submerged in

the pumped liquid.

2. Open the isolating valve, if fitted, and check the

level switch setting.

6. Product introduction

Fig. 5 Unilift AP

If the motor is overloaded, it will stop

automatically. When the motor has cooled

to normal temperature, it restarts

automatically.

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.

TM00 2913 1697

Outlet

Pump

sleeve

Inlet

strainer

Level

switch

Handle with

clamp

English (GB)

6.1 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.

Incorrect application of the pump, for example

resulting in blocking of the pump, and wear are not

covered by the warranty.

6.2 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 9. Technical

data.

The pump is not suitable for these liquids:

• sewage

• liquids containing long fibres

• flammable liquids (oil, petrol, etc.)

• aggressive liquids

• liquids containing solids exceeding the pump's

recommended maximum particle size.

6.3 Identification

6.3.1 Nameplate

Fig. 6 Nameplate example

Applications

AP12

AP35

AP50

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 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 water

closets

●●

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]

7Approvals

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

English (GB)

6.3.2 Type key 7. 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.

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

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.

English (GB)

7.1 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.

7.2 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.

7.3 Construction

The construction of the pump will appear from the

table below and figures A, B and C at the end of

these instructions.

7.4 Service kits

7.5 Contaminated pumps

Liquid

temperature

The oil must be replaced

after

20 °C 4500 operating hours

40 °C 3000 operating hours

55 °C 1500 operating hours

Pos. Description

6 Pump housing

37a O-ring

49 Impeller

55 Pump sleeve with motor

66 Washer

67 Lock nut

84 Inlet strainer

105 Shaft seal

182 Level switch

188a Screws

193 Screws

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)

8. 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 4.1 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 4.1 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.

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