Sera C 409.2 Series User manual

( ) *
( ) *
( ) *
( ) *
( ) *
( ) *
*
*
( ) *
( ) *
( ) *
( ) *
( ) *
( ) *
( ) *
( ) *
* available until 31.12.2016
* available until 31.12.2016

2www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions

3
TA 414 Rev. 11 en 06/2016 Subject to technical modications!
Controllable diaphragm pump
C/CS 409.2
Operating instructions
Table of contents
Q. Quickstart..................................................................................................................................................6
Q.1 Power connection................................................................................................................................6
Q.2 Control elements .................................................................................................................................7
Q.3 LED operation indicators .....................................................................................................................7
Q.4 Key operation ......................................................................................................................................8
Q.5 Factory settings ...................................................................................................................................8
Q.6 Control inputs and outputs...................................................................................................................9
Q.6.1 Control via contact signal ............................................................................................................9
Q.6.2 Control via analog signal .............................................................................................................9
Q.7 Selecting the operating mode............................................................................................................10
1. General ..................................................................................................................................................... 11
1.1 General user information.................................................................................................................... 11
1.2 Symbols and notes used in these operating instructions ................................................................... 11
1.3 Notes attached to the product ............................................................................................................ 11
1.4 Quality instructions.............................................................................................................................12
2. Safety instructions ..................................................................................................................................12
2.1 Personnel qualication and training ...................................................................................................12
2.2 Dangers in case of inobservance of the safety instructions ............................................................... 12
2.3 Safety conscious working...................................................................................................................12
2.4 Safety instructions for owner / operator..............................................................................................13
2.5 Safety instructions for maintenance, servicing and installation work ................................................. 13
2.6 Arbitrary modication and production of spare parts..........................................................................13
2.7 Improper operations ...........................................................................................................................13
2.8 Intended use.......................................................................................................................................13
2.9 Operating conditions ..........................................................................................................................14
2.10 Personal protection for maintenance and service ............................................................................ 14
2.11 Utilities/Lubricants ............................................................................................................................14
2.11 Foreseeable misuse .........................................................................................................................15
2.11.1 Transport .................................................................................................................................. 15
2.11.2 Assembly and installation .........................................................................................................15
2.11.3 Start-up.....................................................................................................................................15
2.11.4 Operation..................................................................................................................................16
2.11.5 Maintenance / Repair ...............................................................................................................16
2.11.6 Cleaning ...................................................................................................................................16
2.12.7 Shut-down ................................................................................................................................17
2.12.8 Disassembly.............................................................................................................................17
2.12.9 Disposal ...................................................................................................................................17
3. Transport and storage ............................................................................................................................ 18
3.1 General...............................................................................................................................................18
3.2 Storage...............................................................................................................................................18
4. Product description ................................................................................................................................ 19
4.1 Types..................................................................................................................................................19
4.1.1 Type key .....................................................................................................................................19
4.1.2 Type plate...................................................................................................................................20
4.2 Materials.............................................................................................................................................20
4.3 Viscosity, pumped medium.................................................................................................................20
4.4 Dosing range......................................................................................................................................20
4.5 Noise measurement ...........................................................................................................................20
4.6 Components of the diaphragm pump.................................................................................................21
4.6.1 C409.2........................................................................................................................................21
4.6.2 CS409.2 .....................................................................................................................................22
4.7 Functional description ........................................................................................................................23
4.7.1 General ......................................................................................................................................23
4.7.2 Stroke length adjustment ...........................................................................................................23
4.7.3 Drive motor.................................................................................................................................23
4.7.4 Stroke length adjustment ...........................................................................................................24
4.7.5 Assembly pump..........................................................................................................................27

4Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
4.7.6 Pump body .................................................................................................................................27
4.7.7 Pump body with integrated overow valve.................................................................................27
4.7.8 Suction / Pressure valve ............................................................................................................28
4.7.9 Electronics (operating panel) .....................................................................................................28
4.7.10 Diaphragm rupture monitoring device (option).........................................................................29
4.7.11 Manual vent valve (only FRP-execution C 409.2-0,8e - …-2,4e) ............................................. 29
4.7.12 Automatic ventilation device (CS-design).................................................................................30
5. Technical data..........................................................................................................................................31
5.1 Performance data...............................................................................................................................31
5.2 Motor data ..........................................................................................................................................32
5.3 Additional data for electronics ............................................................................................................32
5.4 Dimensions.........................................................................................................................................33
5.4.1 C 409.2.......................................................................................................................................33
5.4.2 CS 409.2 ....................................................................................................................................38
6. Assembly / Installation............................................................................................................................ 41
6.1 Provide overpressure protection ........................................................................................................43
6.2 Prevent a backow of the pumped medium .......................................................................................44
6.3 Eliminate undesired siphoning ...........................................................................................................45
6.4 How to ensure an gas-free suction.....................................................................................................45
6.5 Install the empty-tank alarm ...............................................................................................................46
6.6 How to avoid an emptying of the suction line.....................................................................................46
6.7 Line strainer........................................................................................................................................47
6.8 Suction via a siphon pipe ...................................................................................................................47
6.9 In case of slightly degassing dosing media........................................................................................48
6.10 Dosing of suspensions .....................................................................................................................48
6.11 Damping of the pulsation..................................................................................................................49
7. Electrical connections ............................................................................................................................ 51
7.1 Electric supply ....................................................................................................................................51
7.2 Electrical interfaces ............................................................................................................................52
7.2.1 Control inputs and outputs ......................................................................................................... 52
7.2.2 Level input with pre-alarm and dry run.......................................................................................54
7.2.3 Input for ow control and ow meter ..........................................................................................55
8. Operation in non-hazardous areas ........................................................................................................ 55
9. Start-Up ....................................................................................................................................................56
9.1 Driving Motor......................................................................................................................................56
9.2 Initial start / Restart ............................................................................................................................56
10. Operation ...............................................................................................................................................57
10.1 Operating elements..........................................................................................................................57
10.2 LED operation indicators..................................................................................................................57
10.3 Key operation ...................................................................................................................................58
10.4 Parameter table................................................................................................................................59
10.5 Menu ................................................................................................................................................61
10.5.1 Screen “Operating messages” .................................................................................................61
10.5.2 Fault and warning messages ...................................................................................................62
10.5.3 Screen “Main menu”.................................................................................................................63
10.5.4 Value entry ...............................................................................................................................63
10.5.5 Menu guide ..............................................................................................................................65
10.6 Selecting the operation mode...........................................................................................................70
10.7 Additional settings for the operation mode .......................................................................................71
10.7.1 Additional settings for the ANALOG operation mode ...............................................................71
10.7.2 Additional settings for the PULSE mode .................................................................................. 75
10.7.3 Additional settings for the BATCH mode .................................................................................. 76
10.7.4 Settings for the EXTERNAL operation mode ........................................................................... 78
10.8 Conguring the inputs and outputs...................................................................................................78
10.8.1 Digital input 01 .........................................................................................................................79
10.8.2 Digital/analog inputs 02 and 03................................................................................................80
10.8.3 Outputs 01 and 02....................................................................................................................80
10.9 Flow rate indicator............................................................................................................................81
10.10 Calibration ......................................................................................................................................83

5
TA 414 Rev. 11 en 06/2016 Subject to technical modications!
Controllable diaphragm pump
C/CS 409.2
Operating instructions
10.11 System............................................................................................................................................85
10.12 Totalizer ..........................................................................................................................................85
10.13 Password........................................................................................................................................85
10.14 Info .................................................................................................................................................87
10.15 Extras .............................................................................................................................................87
10.15.1 Slow-Mode ............................................................................................................................. 87
10.15.2 Dosing monitoring ..................................................................................................................87
10.15.3 Diaphragm rupture detection (OPTION) ................................................................................88
10.15.4 Level monitoring.....................................................................................................................89
10.15.5 Venting automatic (only with CS 409.2) .................................................................................90
11. Maintenance...........................................................................................................................................92
11.1 Working materials.............................................................................................................................93
11.2 Drive unit ..........................................................................................................................................94
11.2.1 Drive motor ...............................................................................................................................94
11.2.2 Oil change ................................................................................................................................94
11.3 Dosing unit........................................................................................................................................95
11.3.1 Overview of the tightening torques ...........................................................................................95
11.3.2 Changing the Diaphragm.......................................................................................................... 96
12. Spare and wearing parts..................................................................................................................... 100
12.1 Wearing parts.................................................................................................................................100
12.2 Spare parts.....................................................................................................................................100
12.3 Spare and wearing parts ................................................................................................................101
12.3.1 Diaphragm pump C 409.2- 0,8 e ...-2,4 e..............................................................................101
12.3.2 Diaphragm pump C 409.2- 4,0 (e) ...-180 (e)........................................................................102
12.3.3 Diaphragm pump C 409.2-250 (e) ...-350 (e)......................................................................104
12.3.4 Diaphragm pump C 409.2- 4,0 (e) ...-180 (e)
with integrated overow valve.................................................................................................106
12.3.5 Diaphragm pump C 409.2-250 (e) ...-350 (e)
with integrated overow valve.................................................................................................108
12.3.6 Diaphragm pump CS 409.2- 0,8 e ...-2,4 e ........................................................................... 110
12.3.7 Diaphragm pump CS 409.2- 4,0 (e) ...-25 (e) ....................................................................... 112
12.3.8 Diaphragm pump CS 409.2- 4,0 (e) ...-25 (e)
with integrated overow valve................................................................................................. 114
13. Fault analysis and corrective action ................................................................................................. 116
13.1 Analysis of the plain text error messages....................................................................................... 116
13.2 Analysis of other faults ................................................................................................................... 118
14. Shut-down............................................................................................................................................120
15. Disposal ...............................................................................................................................................120
15.1 Dismantling and transport ..............................................................................................................120
15.2 Complete disposal..........................................................................................................................120
16. Clearance Certicate........................................................................................................................... 121

6www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
Q. Quickstart
“Quickstart” is used to start-up the pump quickly without having read the operating instructions in detail.
The Quickstart does not claim to be complete and does not relieve the user from
reading the complete instruc-tions!
INFO!
Q.1 Power connection
The sera diaphragm pump is delivered ready for installation. Standard delivery includes a 2m power cable with Euro
plug. The standard version C 409.2 is designed for an operating voltage range of 210 – 250 V, 50/60 Hz.
The self-venting version CS 409.2 has a limited operating voltage range. The
specications on the type plate must absolutely be adhered to!
The CS 409.2 is available in three versions:
■210 – 250 V, 50/60 Hz
■100 – 120 V, 50 Hz
■100 – 120 V, 60 Hz
ATTENTION!
The pump restarts in the selected operating mode after the power supply was
switched on or a power supply recovery following a mains failure!
ATTENTION!
Symbol:
Only operate the pump when it is connected to an earthed power supply!
ATTENTION!

7
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
3
4
5
6
1
2
1 STOP/START key
2 LED operation indications
3 LCD-display
4 UP key
5 DOWN key
6 ENTER key
Q.3 LED operation indicators
Three light-emitting diodes (LED) indicate the status of the pump:
Green: Operation and stroke indicator
When switching on the pump, the green LED lights steadily. The operation indicator works in combina-
tion with a stroke indicator; during pump operation, the LED ashes in accordance with the current stroke
frequency.
Yellow: Warning indicator
The yellow LED indicates all occurring warning messages (cp. table "Overview LED Operation Indicator"
in chapter “LED Operation Indicator"). The warning is not only indicated by the LED but also as plain text
in the LCD display.
Red: Fault indicator
The red LED indicates all occurring faults (cp. table "Overview LED Operation Indicator" in chapter “LED
Operation Indicator"). The fault is not only indicated by the LED but also as plain text in the LCD display.
Q.2 Control elements

8www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
Q.4 Key operation
Operation of the pump is performed with 4 keys:
STOP/START key
START
STOP
ENTER
After connection to the power supply, the pump is switched ON/OFF using the STOP/START
key.
ENTER key
START
STOP
ENTER
You can use the ENTER key to open and conrm value input elds and to select menu items.
UP- / DOWN key
START
STOP
ENTER
Using the UP/DOWN key, you can scroll the different menu items / menu levels and select the
display of various operating messages.
During parameter adjustment, the UP key is used to increase the parameter value and the
DOWN key is used to decrease the parameter value.
Q.5 Factory settings
The factory setting of the pump electronics is specied in Chapter “Parameter table”.

9
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
Q.6 Control inputs and outputs
Q.6.1 Control via contact signal
Figure: "Control of digital inputs via a potential-free contact signal and control of a relay via an output of the dosing pump”
Q.6.2 Control via analog signal
Figure: "Control of analog/digital inputs via an analog signal, potential-free contact signal and control of a relay via
an output of the dosing pump”
Collecting Fault (15V DC)
Extern Stop
Contact signal
Contact signal
Pulse
-
+
RD + BU
PK
GY
YE
GN
BN
WH
Output 01 Collecting fault max. 50 mA
Extern Stop
+4 ... 20mA
Analog 01
-
+
RD + BU
PK
GY
YE
GN
BN
WH
0V (Ground) / -4...20mA
Control cabinet customer

10 www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
Operation Menu e.g. current stroke frequency (depending on chosen operation mode)
START
STOP
ENTER
+
START
STOP
ENTER
PW01
Main Menu
Operation Mode
START
STOP
ENTER
>Operation
Mode<
START
STOP
ENTER
Manual
Pulse
Analog
Batch
Extern
START
STOP
ENTER
START
STOP
ENTER
START
STOP
ENTER
PW02
Q.7 Selecting the operating mode
Proceed as follows to select the operating mode:
■Input the password PW01 (factory setting 9990) to release the programming levels.
■Change the operating mode.
PW01 Locking by password 01 (pre setting ex work: 9990, not activated)
PW02 Locking by password 02 (pre setting ex work: 9021)

11
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
Before commissioning and during operation of the sera dosing pump the respective regulations valid at the place of
installation are to be observed.
The sera dosing pump is delivered ready for installation. Carefully read these instructions and especially the safety
instructions herein contained before installation and initial start-up of the pump.
1. General
Special notes in these operating instructions are marked with text and danger symbols.
Designation of the note Danger type Denition of the note
(Text and symbol)
Danger of fatal injury Risk of injury Damage to property
(in the operating instructions)
DANGER! XXX
Identies an imminent danger
that results in fatal or severe injuries if not
avoided.
WARNING! XXX
Designates a potentially dangerous situation
There might be danger to life or serious injury and
damage to property if it is not avoided.
CAUTION! X X
Designates a potentially dangerous situation
There might be slight or minor injury or damage to
property if it is not avoided.
ATTENTION! X
Designates a potentially dangerous situation
that could lead to damage to property if not
avoided.
NOTE! Designates information which helps to make work
easier and is useful for trouble-free operation.
1.3 Notes attached to the product
Symbols which are directly attached to the pump, e.g. arrows for direction of rotation or symbols for uid connections
are to be observed and kept in legible condition.
1.2 Symbols and notes used in these operating instructions
1.1 General user information

12 www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
1.4 Quality instructions
Observance of these operating instructions and, in particular, the safety instructions, helps to
■avoid dangers to persons, machines and environment.
■increase reliability and service life of the product and the complete system.
■reduce repair cost and downtime.
The sera quality management and quality assurance system for pumps, systems, valves and ttings and compres-
sors is certied according to ISO 9001:2008.
The sera product meets the valid safety and accident prevention regulations.
Always keep these operating instructions within reach at the place of installation.
ATTENTION!
Pay attention to the safety data sheet of the medium! The owner must take cor-
responding accident prevention measures to protect operating personnel from
danger through the delivery media used!
WARNING!
The personnel for operation, maintenance, inspection and installation must be suitably qualied for their tasks. The
owner must clearly dene responsibility and supervision of the personnel.
If the personnel do not have the knowledge required, then personnel is to be trained and instructed correspondingly.
Such training can be provided by the manufacturer / supplier upon order of the owner. In addition, the owner has to
ensure that personnel have understood the operating instructions completely.
Inobservance of these safety instructions can result in danger to persons, hazards to the environment and damage
to the product.
Inobservance of the safety instructions may lead to:
■Failure of important functions of the product/system.
■Inobservance of prescribed methods for maintenance and servicing.
■Danger to persons through electrical, mechanical and chemical inuences.
■Hazards to the environment through leaking dangerous media.
The safety instructions specied in this operating manual, the national regulations for accident prevention, the safety
regulations for the pumped medium valid at the place of installation as well as internal working-, operating-, and safety
instructions of the owner are to be observed.
2.3 Safety conscious working
2.2 Dangers in case of inobservance of the safety instructions
2.1 Personnel qualication and training
2. Safety instructions

13
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
The owner must ensure that any maintenance-, servicing- and installation work is only entrusted to authorized and
suitably qualied personnel who have carefully read and understood the operating instructions.
Only those spare parts and operating supplies are to be used which meet the requirements of the specied opera-
ting conditions.
Threaded joints and connections may only be disconnected when the system is not under pressure.
Modications of or changements to the pump are only permitted after previous agreement of the manufacturer. Origi-
nal spare parts and accessories which were approved by the manufacturer are essential for safety reasons.
If the pumps (e.g. drive motor) are modied without au-thorization of the manufac-
turer or spare parts are used which are not approved, any warranty claim becomes
null and void.
CAUTION!
The sera product is only to be deployed according to the intended purpose stated in the product description and the
acceptance test certicate.
If the product is to be used for other applications, then the suitability of the product for the new operating conditions
must be discussed with sera beforehand!
Criteria for operation in accordance with the intended use:
■Observe characteristics of the medium (please see safety- and product data sheet of the delivery
medium – the safety data sheet is to be provided by the supplier / owner of the medium).
■Resistance of the materials which come into contact with the medium.
■Operating conditions at the place of installation.
■Pressure and temperature of the medium.
■Voltage supply.
Operating safety of the supplied product is only guaranteed if the product is used as intended, according to the
descriptions in Chapter 2.8 of these operating instructions.
2.4 Safety instructions for owner / operator
Leaking hazardous delivery media and operating supplies are to be disposed off in such a way that any danger to
persons and the environment is excluded. The legal regulations are to be observed.
Danger caused by electrical energy is to be avoided.
2.8 Intended use
2.7 Improper operations
2.6 Arbitrary modication and production of spare parts
2.5 Safety instructions for maintenance, servicing and installation work

14 www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
2.10 Personal protection for maintenance and service
The provisions of the German Ordinance on Hazardous Substances (GefStoffV) (§14 Safety Data Shee) and relevant
national safety regulations for the pumped medium must strictly be adhered to.
In case of accidents check whether the following substances are emitted:
■Leaking uids.
■Leaking vapours.
■Noise emissions (sound level).
Emissions are to be monitored by corresponding controly systems of the total installation.
Wear protective clothing, gloves, breathing mask and a face protecting mask.
ATTENTION!
Personal protective equipment must be provided by the owner!
NOTE!
NOTE!
If not agreed otherwise in the contract conditions, the sera dosing pump will always be supplied with the necessary
utilities. (For type and quantitiy of utilities/lubricants, see Chapter 11.1 „Working materials“).
2.9 Operating conditions
■Ambient temperature: 0°C to 40°C
■Climate: relative air humidity < 90%
■Installation altitude: max 1000m above sea level
■Pump design data for dosing and its temperature can be found in the order conrmation.
2.11 Utilities/Lubricants

15
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
2.11 Foreseeable misuse
■Power supply not fuse protected (no fuse/fuse too large, power supply not conforming to standards).
■No or improper fastening material of the pump.
■Improper connection of the pressure pipes, wrong material i.e. PTFE tape and unsuitable connection pieces.
■Liquid pipes confused.
■Threads overturned/damaged.
■Pipes bent during connection in order to compensate for alignment errors.
■Supply voltage connected without earthed conductor.
■Socket for safe disconnection of the power supply difcult to reach.
■Wrong connecting cables for supply voltage (cross-section too small, wrong insulation).
■Parts damaged (e.g. vent valve, ow meter broken off).
■Wrongly dimensioned pressure and suction pipe.
■Incorrect dimensioned and improperly fastened pump panel (panel broken off).
■The pumped medium is conveyed into the environment in the case of pumps with automatic or manual vent
valve if the return pipe was improperly tted or not tted at all. ► Danger for the operator.
■Cover on vent openings (e.g. motor).
■Suction or pressure pipes closed (i.e. foreign matters, particle size, stop valves).
■Start-up with damaged system.
■Integrated overow valve misadjusted (no protection function).
■Operation without connected return pipe of the integrated overow valve.
■No free return ow of the overow valve.
■Operation without connected return pipe of the vent valve.
■Mains plug cut off (direct connection), safe disconnection impossible. Safe disconnection e.g. by
2-pin main switch.
■Short circuit of the internal power supply (15V DC) at the control cable during installation.
■Admissible current load of the digital outputs exceeded
■No sera sensors for ow or lling level ► damage to the electronics.
■No diode for external control power supply connection ► electronics overloaded/destroyed.
■Electronics opened in order to connect the mains cable directly to the power supply ► electric shock or
damage to the electronics.
■Connection of wrong supply voltage or mains frequency ► electronics or vent valve destroyed.
■Sensor cable damaged (electronics <--> stroke mechanism), wrong or no recognition of the stroke
length ► wrong dosing volume and resulting process error.
■Wrong parameterization of the pump ► inadvertent start.
■Distance between dosing pump and other dosing pumps or electrical consumers insufcient ► fault by elec-
tromagnetic radiation..
The following misuse is assigned to the life cycles of the machine.
Misuse can result in danger to the operating personnel!
DANGER!
■Tipping behavior during transport, loading and unloading ignored.
■Weight for lifting underestimated.
2.11.2 Assembly and installation
2.11.1 Transport
2.11.3 Start-up

16 www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
2.11.6 Cleaning
2.11.4 Operation
2.11.5 Maintenance / Repair
■Control cables too long >> 30m ► malfunctions due to EMC.
■Control cable and power cable laid in parallel ► malfunctions due to EMC.
■If the screw-in depth of the setscrew for the integrated overow valve is not noted, this may lead to dan-
gerous consequences, i.e. rupture of the pressure pipe or leaking medium. …).
■Works carried out which are not described in the operating instructions (works on the stroke mechanism and
the assembly pump, electronics opened).
■Prescribed maintenance schedules ignored.
■Use of wrong spare parts/oils (e.g. no sera original spare parts, wrong viscosity).
■Improper mounting of spare and wearing parts (e.g. wrong tightening torque for pump body).
■Oil level not checked.
■Use of cables with damaged insulation.
■No shut down / no protection against a restart before maintenance work.
■Pumped medium or utilities during an oil change insufciently removed.
■Restart without sufcient fastening.
■Valves confused.
■Sensor pipes confused.
■Pipes not connected (e.g. suction- and pressure pipes, gas pipes).
■Gaskets damaged, medium is leaking.
■Gaskets not tted, medium is leaking.
■Wearing of unsuitable protective clothing / no protective clothing at all.
■Operation of an uncleaned system.
■Pumped medium contaminated with oil.
■Poorly ventilated room.
■Integrated overow valve misadjusted.
■ No free return ow of the integrated overow valve.
■Fault message ignored ► faulty dosing / process error.
■Pipes hit, pulsation damper not used ► damage to the pipes, medium is leaking.
■Pumped medium contains particles or is contaminated.
■External fuse bridged ► no cut off in case of an error.
■Ground wire removed ► no cut off by fuse in case of an error, supply voltage directly at the housing.
■Insufcient lighting of the working place.
■Suction height too high, pump capacity too low ► process error.
■Arbitrary modication of the pump (valves, internal fuse, …).
■No supervision of leakages ► MBE opening.
■Diaphragm rupture is not indicated when the MBE plug was disconnected. Medium can escape into the envi-
ronment through the vent hole “Danger to the operator and the environment”.
■Wrong rinsing medium (material changed, reaction with the medium).
■Wrong cleaning agent (material changed, reaction with the medium).
■Cleaning agent remains in the system (material changed, reaction with the medium).
■Protective clothing insufcient or missing.
■Use of unsuitable cleaning utensils (material changed, mechanical damage by high pressure cleaner).
■Untrained personnel.
■Vent openings clogged.
■Parts torn off.
■Sensors damaged.

17
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
■Non-observance of the safety data sheet.
■Control elements actuated.
■Poorly ventilated room.
■Pumped medium not completely removed.
■Disassembly of pipes with the pump running/with residual pressure.
■Disconnection of the electrical connections in a wrong sequence (ground wire rst).
■Disconnection from the power supply not ensured ► danger through electricity.
■Poorly ventilated room.
2.12.7 Shut-down
■Residues of the pumped medium and utilities in the system.
■Use of wrong disassembly tools.
■Wrong or no protective clothing at all.
■Poorly ventilated room.
2.12.8 Disassembly
■Improper disposal of the pumped medium, utilities and materials.
■No marking of hazardous media.
2.12.9 Disposal
■Wrong disposal of the elctronics.

18 www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
3. Transport and storage
3.1 General
3.2 Storage
sera products are checked for perfect condition and function previous to shipment.
Check for transport damage immediately after arrival of goods. If damage is found, this is to be reported immediately
to the responsible carrier and the manufacturer.
The packaging material must be disposed of appropriately!
NOTE!
An undamaged packaging protects the unit during storage and should only be opened when the product is installed.
Proper storage increases the service life of the product and includes prevention of negative inuences such as heat,
moisture, dust, chemicals etc.
The following storage specications are to be obsered:
■Storage place: cool, dry, dustfree and slightly ventilated
■Storage temperature between +2°C and +40°C
■Relative air humidity not more than 50 %.
■The maximum storage time for the standard system is 12 months.
If these values are exceeded, metal products should be sealed in foil and protected from condensation water with a
suitable desiccant.
Do not store solvents, fuels, lubricants, chemicals, acids, disinfectants and similar in the storage room.

19
TA 414 Rev. 11 en 06/2016 Subject to technical modications! www.sera-web.com
Controllable diaphragm pump
C/CS 409.2
Operating instructions
4. Product description
Type of drive (combinations possible)
Ccontrollable
Sself ventilating
Mnot adjustable
Rgenerally adjustable
FMotor suitable for frequency converter operation
iFrequency converter, mounted on the motor
PPole-changing motor
KStroke mechanism with side drive shaft and connected to the drive via a clutch
Ztwin design
XStroke mechanism with two opposite pump heads, combined suction and pressure side
YStroke mechanism with two opposite pump heads
Series
204 (solenoid driven pumps)
409 (motor driven pumps)
410 (motor driven pumps)
411 (motor driven pumps)
509 (motor driven pumps)
510 (motor driven pumps)
511 (motor driven pumps)
Revision index
max. Nominal capacity (litre/hour (each pump head))
Displacer (type of construction)
(without) Double diaphragm
eSingle diap hragm
ML Multy-layer diaphragm
12345
KM Piston Diaphragm
KPiston
C 409 .2-50 e (example)
4.1.1 Type key
4.1 Types

20 www.sera-web.com Subject to technical modications! TA 414 Rev. 11 en 06/2016
Controllable diaphragm pump
C/CS 409.2
Operating instructions
4.1.2 Type plate
Each sera dosing pump is factory provided with a type plate.
The following information can be found on this type plate.
4.2 Materials
The materials used are stated in the order conrmation and the product description.
4.3 Viscosity, pumped medium
The diaphragm pump is suitable for uids with viscosities < 100 mPas.
4.4 Dosing range
The delivery rate of the diaphragm pump can be set manually via the stroke length adjustment (0…100%).
The linear dosing range is between 20% and 100%.
4.5 Noise measurement
According to DIN 45635 the sound pressure level measured of the diaphragm pumps is between 50 and 65 dB (A).
Type
No.
P
1
min/max
P
2
max
bar
bar
nN
Hydrfl
QNl/h
1/min
cm
3
1
2
3
4 5
7
6
No. Designation
1Pump type
2Serial number of the pump
3
Minimum/maximum permissible pressure in the pump inlet
Minimum/maximum permissible pressure in the inlet cross section which the pump can be used for.
Please consider that pressure depends on rotation speed, delivery rate, temperature and static pressure
at the inlet.
4
Maximum permissible pressure in the pump outlet
Maximum permissible pressure in the outlet cross section which the pump can be used for. Please consi-
der that pressure depends on rotation speed, delivery rate, temperature and static pressure at the outlet.
5Buffer uid
Quantity of buffer uid in the diaphragm ring (in the case of double diaphragm pumps).
6Nominal stroke frequency
7
Nominal delivery rate
Delivery rate which the pump was ordered for, based on the nominal rotation speed nN, the nominal deli-
very height p2max. and the delivery medium stated in the supply contract.