KSB M 1, M 1 K Operating Manual

Magnetic Float Switch

M 1 (K) Alarm Contactor

M 1 for AS 0, 2, 4, 5, AS W4, AS W8
M 1 K for AS 1-M and washing machine interrupter
GEWAS 191 AN GL

Installation/Operating Manual

Legal information/Copyright

Installation/Operating Manual M 1 (K) Alarm Contactor

Original operating manual

All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.

Subject to technical modification without prior notice.

© KSB SE & Co. KGaA, Frankenthal 14/12/2017

Contents

3 of 20

M 1 (K) Alarm Contactor

Contents

Glossary .................................................................................................................................................. 4

1 General.................................................................................................................................................... 5

1.1 Principles ...........................................................................................................................................................5

1.2 Target group.....................................................................................................................................................5

1.3 Other applicable documents............................................................................................................................5

1.4 Symbols .............................................................................................................................................................5

2 Safety...................................................................................................................................................... 6

2.1 Key to safety symbols/markings.......................................................................................................................6

2.2 General..............................................................................................................................................................6

2.3 Intended use .....................................................................................................................................................6

2.4 Personnel qualification and training...............................................................................................................6

2.5 Consequences and risks caused by non-compliance with this manual .........................................................7

2.6 Safety awareness ..............................................................................................................................................7

3 Transport/Temporary Storage/Disposal............................................................................................... 8

3.1 Checking the condition upon delivery............................................................................................................8

3.2 Transport...........................................................................................................................................................8

3.3 Storage/preservation........................................................................................................................................8

3.4 Disposal .............................................................................................................................................................8

4 Description.............................................................................................................................................. 9

4.1 General description ..........................................................................................................................................9

4.2 Designation.......................................................................................................................................................9

4.3 Name plate........................................................................................................................................................9

4.4 Design details....................................................................................................................................................9

4.5 Technical data.................................................................................................................................................10

5 Installation at Site................................................................................................................................ 11

5.1 Safety regulations...........................................................................................................................................11

5.2 Installation in Ama-Drainer-Box Mini ...........................................................................................................11

5.3 Installation in Ama-Drainer-Box 1U/1B - single-pump units ........................................................................12

5.4 Installation in Ama-Drainer-Box Z2 U/Z2 B - dual-pump units ....................................................................13

5.5 Electrical connection ......................................................................................................................................14

6 Commissioning/start-up ...................................................................................................................... 15

6.1 Prerequisites for commissioning/start-up......................................................................................................15

6.2 Commissioning................................................................................................................................................15

7 Maintenance......................................................................................................................................... 16

8 Trouble-shooting.................................................................................................................................. 17

9 Related Documents.............................................................................................................................. 18

9.1 Wiring diagrams .............................................................................................................................................18

Index ..................................................................................................................................................... 19

Glossary

4 of 20

M 1 (K) Alarm Contactor

Glossary

Above-floor box

Automatic waste water lifting unit for above-floor
installation

Alarm contactor

Magnetic float switch that triggers a switching
signal via a reed contact when the liquid level
rises.

Alarm switchgear types AS 0, AS 1-M, AS 2, AS 4,
AS 5

Monitoring unit that outputs an acoustic signal in
conjunction with a contactor. The switchgear
comes with additional functions such as volt-free
contact and battery back-up depending on the
type series.

Alarm switchgear/washing machine interrupter
AS W4, AS W8

Control unit with 4 or 8 intermediate connectors
for connecting up to 4 or 8 washing machines;
automatically de-energises the washing machines
if the water level in the collecting tank of a waste
water lifting unit is too high. Features the
following supplementary functions: alarm buzzer,
indicator lamps for operational availability and
high water, luminous switch for alarm ON/OFF and
M 1 alarm contactor.

Collecting tank

Component of a waste water lifting unit in which
the incoming waste water is stored in
unpressurised condition prior to automatic lifting.

Underfloor box

Automatic waste water lifting unit for underfloor
installation in substructures and foundations.

Washing machine interrupter GEWAS

Control unit with connector housing and outlet
for connecting a washing machine. Including
alarm buzzer and plug connection for an alarm
contactor for automatically de-energising the
washing machine if the water level in the
collecting tank is too high.

Waste water lifting unit

Device for collecting and automatically lifting
faecal-free waste water above the flood level

1 General

5 of 20

M 1 (K) Alarm Contactor

1 General

1.1 Principles

This operating manual is supplied as an integral part of the type series and variants
indicated on the front cover. The manual describes the proper and safe use of this
equipment in all phases of operation.

The name plate indicates the type series, the main operating data and the serial
number. The serial number uniquely describes the system and is used as identification
in all further business processes.

In the event of damage, immediately contact your nearest KSB service centre to
maintain the right to claim under warranty.

1.2 Target group

This operating manual is aimed at the target group of trained and qualified specialist
technical personnel.

1.3 Other applicable documents

Table1: Overview of other applicable documents

Document Contents

Operating manual(s) for the
pump(s)

Proper and safe use of the pump in all phases of
operation

Operating manual(s) for the
monitoring and control units

Proper and safe use of the monitoring and control
units in all phases of operation

Wiring diagram Electrical connection

1.4 Symbols

Table2: Symbols used in this manual

Symbol Description

✓ Conditions which need to be fulfilled before proceeding with the

step-by-step instructions

⊳ Safety instructions

⇨ Result of an action

⇨ Cross-references

1.

2.

Step-by-step instructions

Note
Recommendations and important information on how to handle
the product

2 Safety

6 of 20

M 1 (K) Alarm Contactor

2 Safety

!

DANGER

All the information in this section refers to hazardous situations.

2.1 Key to safety symbols/markings

Table3: Definition of safety symbols/markings

Symbol Description

!

DANGER

DANGER

This signal word indicates a high-risk hazard which, if not avoided,
will result in death or serious injury.

!

WARNING

WARNING

This signal word indicates a medium-risk hazard which, if not
avoided, could result in death or serious injury.

CAUTION

CAUTION

This signal word indicates a hazard which, if not avoided, could
result in damage to the machine and its functions.

General hazard

In conjunction with one of the signal words this symbol indicates a
hazard which will or could result in death or serious injury.

Electrical hazard

In conjunction with one of the signal words this symbol indicates a
hazard involving electrical voltage and identifies information about
protection against electrical voltage.

Machine damage
In conjunction with the signal word CAUTION this symbol indicates
a hazard for the machine and its functions.

2.2 General

This manual contains general installation, operating, and maintenance instructions
that must be observed to ensure that the float switch is operated safely as well as to
prevent injury and damage to property.

The safety information in all sections of this manual must be complied with.

The manual must be read and fully understood by the specialist personnel/operators
responsible prior to installation and commissioning.

The contents of this manual must be available to the specialist personnel on site at all
times. Instructions attached directly to the float switch must always be complied with
and kept in a perfectly legible condition. This applies to, for example:

▪ Markings for connections

▪ Name plate

The operator is responsible for ensuring compliance with all local regulations not
taken into account in this manual.

2.3 Intended use

The values specified in the technical documentation for the mains voltage, mains
frequency, ambient temperature, and motor current must not be exceeded. The float
switch must only be operated in accordance with the instructions provided in the
operating manual and other applicable documents .

2.4 Personnel qualification and training

All personnel involved must be fully qualified to transport, install, operate, maintain
and inspect the machinery this manual refers to. The responsibilities, competence and
supervision of all personnel involved in installation, operation, maintenance and
inspection must be clearly defined by the operator.

2 Safety

7 of 20

M 1 (K) Alarm Contactor

Deficits in knowledge must be rectified by means of training and instruction
provided by sufficiently trained specialist personnel. If required, the operator can
commission the manufacturer/supplier to train the personnel.

2.5 Consequences and risks caused by non-compliance with this manual

▪ Non-compliance with this operating manual will lead to forfeiture of warranty

cover and of any and all rights to claims for damages.

▪ Non-compliance can, for example, have the following consequences:

– Hazards to persons due to electrical, thermal, mechanical and chemical

effects and explosions

– Failure of important product functions

– Failure of prescribed maintenance and servicing practices

– Hazard to the environment due to leakage of hazardous substances

2.6 Safety awareness

In addition to the safety information contained in this manual and the intended use,
the following safety regulations shall be complied with:

▪ Accident prevention, health and safety regulations

▪ Explosion protection regulations

▪ Safety regulations for handling hazardous substances

▪ Applicable standards and laws

3 Transport/Temporary Storage/Disposal

8 of 20

M 1 (K) Alarm Contactor

3 Transport/Temporary Storage/Disposal

3.1 Checking the condition upon delivery

1. On transfer of goods, check each packaging unit for damage.

2. In the event of in-transit damage, assess the exact damage, document it and

notify KSB or the supplying dealer (as applicable) and the insurer about the
damage in writing immediately.

3.2 Transport

CAUTION

Improper transport

Damage to the float switch!

▷ Always transport the float switch properly and in its original packaging.

▷ For transport observe the transport instructions on the original packaging.

1. Upon receipt, unpack the float switch and check for in-transit damage.

2. Report any in-transit damage to the manufacturer immediately.

3. Dispose of packaging material in accordance with local regulations.

3.3 Storage/preservation

If the ambient conditions for storage are met, the function of the float switch is
safeguarded even after a prolonged period of storage.

CAUTION

Damage during storage by humidity, dirt or vermin

Corrosion/contamination of the float switch!

▷ Store the float switch under dry and vibration-free conditions, if possible in its

original packaging.

▷ Store the float switch in a dry room where the atmospheric humidity is as

constant as possible.

3.4 Disposal

NOTE

Once decommissioned, the float switch must be properly disposed of in accordance
with local regulations.

4 Description

9 of 20

M 1 (K) Alarm Contactor

4 Description

4.1 General description

M 1 alarm contactor

The M 1 alarm contactor is a float switch that automatically sets KSB alarm switchgear
AS0, AS2, AS4, AS5, ASW4 or ASW8 to alarm status when the water level in the
collecting tank of the Ama-Drainer-Box is too high.

M 1 K alarm contactor

The M 1 K alarm contactor is a float switch that responds when the water level in the
collecting tank of the Ama-Drainer-Box is too high by

- automatically sending an alarm signal to the KSB AS 1-M alarm switchgear and

- automatically triggering an acoustic warning signal in washing machine interrupter
GEWAS191ANGL, causing the devices connected to the interrupter to be de­energised.

4.2 Designation

Example: M 1 K alarm contactor

Table4: Key to the designation

Code Description

Alarm contactor Type series

M Magnetic float switch

1 Code number

K With contact plug (for washing machine interrupter only)

4.3 Name plate

6

5

4

1
2
3

Fig.1: Example of name plate for alarm contactor

1 Manufacturer 2 Type series

3 Rated voltage 4 Serial number

5 Switching capacity 6 Start-up current

4.4 Design details

▪ The M 1(K) alarm contactor is a magnetic float switch working according to the

non-contacting principle.

▪ It comprises:

– A connection element with PG7 cable gland

– A 5 m connection cable (2x0.34mm2)

– A sensor tube with a reed contact and the float

As the liquid level rises, the float with the incorporated annular magnet moves
upwards.
In the switching range of the reed contact, the resulting magnetic action triggers a
switching signal.
If the float leaves the contact’s range as the liquid level drops, the reed contact will
return to its original position.

4 Description

10 of 20

M 1 (K) Alarm Contactor

4.5 Technical data

Performance data

Table5: Performance data

Characteristic Value

Switching voltage 12V =

Start-up current Max.0.5A

Switching capacity 10VA

Temperature range Up to +60 °C

Enclosure IP67

Immersion depth 2m

Immersion time 7 days

Initial function Circuit closed in upper float position (NO

contact)

Category of use AC-21A and DC-21A to

DINVDE0660T107
IEC947-3-1, EN60947-3-1

NOTE

Always observe contact protection for inductive loads!

5 Installation at Site

11 of 20

M 1 (K) Alarm Contactor

5 Installation at Site

5.1 Safety regulations

DANGER

Electrical connection work by unqualified personnel

Danger of death from electric shock!

▷ Always have the electrical connections installed by a trained and qualified

electrician.

▷ Observe regulations IEC 60364 (DIN VDE 0100).

DANGER

Power supply not disconnected

Danger to life!

▷ Pull the mains plug or disconnect all electrical connections and secure against

unintentional start-up.

DANGER

Flooding of control unit

Danger of death from electric shock!

▷ Operate the control unit in flood-proof rooms only.

5.2 Installation in Ama-Drainer-Box Mini

900

550.02

550.01

732.01

81-45

M1

655

Fig.2: Fitting the bracket

550.01 Disc, Ø21/7mm 550.02 Disc, Ø 19/8.5mm

655 Pump 732.01 Bracket

734 M 16 cable gland 81-45 Float switch

5 Installation at Site

12 of 20

M 1 (K) Alarm Contactor

900 Self-tapping screw

M1 Drilled hole, Ø2.8mm M2 Drilled hole, Ø16mm

1. Screw float switch 81-45 to bracket 732.01.

2. Fit the bracket on pump 655 (M1 hole) using the fasteners supplied.

27

280

M2

Fig.3: Drilling the cable entry; dimensions [mm]

3. Route the connection cable through the rear tank wall. For this purpose, drill M2

hole (Ø16mm). (Debur the edges.) Seal it with the cable gland 734 supplied.

NOTE

Keep the cable length inside the tank as short as possible.

734

734

81-45 81-45

Fig.4: Installation drawing of M 1 (K) alarm contactor in Ama-Drainer-Box Mini

5.3 Installation in Ama-Drainer-Box 1U/1B - single-pump units

1. Fasten clamp 733 to bracket 732.02 using cheese head screw 900, disc 550, and

hexagon nut 920.

2. Fasten float switch 81-45 to the bracket (width across flats 17); see alarm

contactor M1 (K) installation drawing below.

3. Connect the pre-assembled bracket with float switch to the anti-rotation device

720.02 above the pump handle in the collecting tank.
Make sure it is firmly seated on the anti-rotation device!

– Underfloor installation

The connection cable is pulled through the cable duct or the vent pipe.

– Above-floor installation

The connection cable is routed through the tank wall.
For this purpose, drill an M1 hole (Ø16mm) and seal it with the cable gland
734 supplied.

NOTE

Placing the bracket at a slight angle (no more than30 degrees to the vertical) will
not compromise the performance of the float switch.

5 Installation at Site

13 of 20

M 1 (K) Alarm Contactor

M1
734

720.02

81-45

460 mm

732.02

733

550
900
920

Fig.5: Installation drawing of M 1 (K) alarm contactor in Ama-Drainer-Box 1U/1B

550 Disc 720.02 Anti-rotation device

732.02 Bracket 733 Clamp

734 M 16 cable gland 81-45 Float switch

900 Cheese head screw 920 Hexagon nut

M1 Drilled hole, Ø16mm

5.4 Installation in Ama-Drainer-Box Z2 U/Z2 B - dual-pump units

1. Fasten float switch 81-45 to bracket 732.02 (width across flats 17); see alarm

contactor M 1 (K) installation drawing below.

2. Fasten the pre-assembled bracket with float switch to cross beam 573 using

cheese head screws 900, discs 550, and hexagon nuts 920.

– Underfloor installation

Pull the connection cable through the cable duct or the vent pipe.

– Above-floor installation

Route the connection cable through the tank wall near connector panel 6
(see section 9 of the Ama-Drainer-Box operating manual).
For this purpose, drill a hole (Ø16mm) and seal it with the cable gland 734
supplied.

5 Installation at Site

14 of 20

M 1 (K) Alarm Contactor

81-45

732.02

550
900
920

573

Fig.6: Installation drawing of M 1 (K) alarm contactor in Ama-Drainer-Box Z2U/Z2B

550 Disc (2) 573 Cross beam

732.02 Bracket 734 M 16 cable gland

81-45 Float switch 900 Cheese head screw (2)

920 Hexagon nut (2)

5.5 Electrical connection

DANGER

Work on the pump set by unqualified personnel

Danger of death from electric shock!

▷ Always have the electrical connections installed by a trained and qualified

electrician.

▷ Observe regulations IEC 60364 (DIN VDE 0100).

M 1 alarm contactor

Please refer to the wiring diagram. (ðSection9.1,Page18)

NOTE

Only KSB alarm switchgear AS0, AS2, AS4, or AS5 may be connected to the alarm
contactor.

M 1 K alarm contactor

1. Connect M 1K alarm contactor to the connector on the underside of the control

unit.

2. Alarm contactor M1 K is ready to be used.

NOTE

Only KSB alarm switchgear AS1-M and the KSB washing machine interrupter may
be connected to the alarm contactor.

Carry out a functional test.

6 Commissioning/start-up

15 of 20

M 1 (K) Alarm Contactor

6 Commissioning/start-up

6.1 Prerequisites for commissioning/start-up

Before commissioning/starting up the alarm contactor, ensure that the following
conditions are met:

▪ The information provided in the operating manual for alarm switchgear AS0, AS

1-M, AS2, AS4, AS5, and the washing machine interrupter is complied with.

▪ M 1alarm contactor and alarm switchgear AS0, AS2, AS4, AS5, ASW4 or

ASW8 have been connected in accordance with the wiring diagrams.

6.2 Commissioning

Fig.7: Reed contact open

The M1 (K) alarm contactor works according to the NO principle, i.e. the reed contact
must be open at the lower level. This is indicated by the marking (black dot) on the
upper side of the float.

7 Maintenance

16 of 20

M 1 (K) Alarm Contactor

7 Maintenance

Operating reliability will be improved if proper functioning of the contactor is
checked and verified at regular intervals.
The contactor should be checked for deposits every 3 months and cleaned whenever
necessary.

8 Trouble-shooting

17 of 20

M 1 (K) Alarm Contactor

8 Trouble-shooting

A

Alarm is not activated

B

Alarm is not deactivated

Table6: Trouble-shooting

A B Possible cause Remedy

✘ No voltage. Check electrical connections.

✘ Reed contact defective Carry out continuity check on alarm

contactor with an ohmmeter; consult
KSB service, if necessary.

✘ ✘ Float blocked by dirt, fibres, or fluff. Clean float and sensor tube.

9 Related Documents

18 of 20

M 1 (K) Alarm Contactor

9 Related Documents

9.1 Wiring diagrams

M 1 alarm contactor to alarm switchgear AS0, AS2, AS4, ASW4, ASW8

3

5

AS 0, AS 2, AS 4, ASW4, ASW8M 1

a

b

Fig.8: Wiring diagram for M 1 alarm contactor to alarm switchgear AS0, AS2, AS4,
ASW4, ASW8

a White (WH) b Brown (BN)

M 1 alarm contactor to alarm switchgear AS5

13

14

AS 5

M 1

a

b

Fig.9: Wiring diagram for M 1 alarm contactor to alarm switchgear AS5

a White (WH) b Brown (BN)

Index

19 of 20

M 1 (K) Alarm Contactor

Index

C

Commissioning/start-up15

F

Faults

Trouble-shooting17

O

Other applicable documents5

S

Safety awareness7

T

Transport8

KSB SE & Co. KGaA

Johann-Klein-Straße 9 • 67227 Frankenthal (Germany)

Tel. [phone]

www.ksb.com

2315.813/05-EN