ProMinent Sigma 3 Basic User manual

Diaphragm motor-driven metering pump
Sigma/ 3 Basic type S3Ba
Operating instructions
P_SI_0075_SW
EN
Original operating instructions (2006/42/EC)Part no. 985905 BA SI 089 01/19 EN
Please carefully read these operating instructions before use. · Do not discard.
The operator shall be liable for any damage caused by installation or operating errors.
The latest version of the operating instructions are available on our homepage.

Read the following supplementary information in its entirety! Should you
already know this information, you will benefit more from referring to the
operating instructions.
The following are highlighted separately in the document:
nEnumerated lists
Operating guidelines
ðOutcome of the operating guidelines
- see (reference)
Information
This provides important information relating to the cor‐
rect operation of the unit or is intended to make your
work easier.
Safety notes
Safety notes are identified by pictograms - see Safety Chapter.
These operating instructions conform to current EU regulations applicable
at the time of publication.
Please state identity code and serial number, which you can find on the
nameplate when you contact us or order spare parts. This enables the
device type and material versions to be clearly identified.
Supplementary information
Fig. 1: Please read!
Validity
State the identity code and serial number
Supplemental directives
2

Table of contents
1Identity code.................................................................................... 5
1.1 Explanation of the ATEX label................................................ 6
2 Safety chapter................................................................................. 9
2.1 Safety information for ATEX designs.................................... 15
2.2 Explanation of the ATEX label.............................................. 23
3 Storage, Transport and Unpacking................................................ 26
4Overview of equipment and control elements............................... 27
5 Functional description.................................................................... 29
5.1 Pump..................................................................................... 29
5.2 Liquid end.............................................................................. 29
5.3 Integral relief valve................................................................ 29
5.4 Multi-layer safety diaphragm................................................. 30
6 Assembly....................................................................................... 31
7 Installation, hydraulic..................................................................... 34
7.1 Basic installation notes.......................................................... 38
8 Installation, electrical..................................................................... 39
9 Start up.......................................................................................... 46
10 During operation............................................................................ 50
11 Maintenance.................................................................................. 51
12 Carrying out repairs....................................................................... 56
12.1 Cleaning valves................................................................... 57
12.2 Replacing the diaphragm.................................................... 58
13 Troubleshooting............................................................................. 62
14 Decommissioning.......................................................................... 65
15 Technical data............................................................................... 68
15.1 Performance data................................................................ 68
15.2 Shipping weight................................................................... 69
15.3 Wetted materials................................................................. 70
15.4 Ambient conditions.............................................................. 70
15.4.1 Ambient temperatures...................................................... 70
15.4.2 Media temperatures......................................................... 70
15.4.3 Air humidity...................................................................... 71
15.5 Installation height................................................................ 71
15.6 Motor data........................................................................... 72
15.7 Stroke actuator.................................................................... 73
15.8 Stroke control drive............................................................. 73
15.9 Diaphragm rupture sensor.................................................. 73
15.10 Stroke sensor "Sigma"...................................................... 74
15.11 Relay................................................................................. 74
15.12 Gear oil.............................................................................. 75
15.13 Sound pressure level........................................................ 75
15.14 Supplementary information for modified versions............. 75
16 Diagrams for setting the metering capacity................................... 76
17 Dimensional drawings................................................................... 77
18 Potential equalisation drawings for Sigma Basic Type.................. 82
19 Motor data sheet standard motor.................................................. 84
20 Exploded drawings of Sigma/ 3..................................................... 85
21 Wear parts of Sigma/ 3.................................................................. 92
21.1 Standard.............................................................................. 92
Table of contents
3

21.2 Physiological safety............................................................. 92
22 Declaration of Conformity for Machinery....................................... 94
23 Declaration of Incorporation for Machinery.................................... 95
24 Declaration of Conformity for ATEX Machinery............................. 96
25 Declaration of Conformity for ATEX Machinery............................. 97
26 Index.............................................................................................. 98
Table of contents
4

1 Identity code
S3Ba Sigma 3 Basic type
H Main power end, diaphragm
Type: Capacity
_ _ _ _
_ _
Performance data at maximum back pressure: see nameplate on pump housing
Dosing head material
PP Polypropylene
PC PVC
PV PVDF
TT PTFE + carbon
SS Stainless steel
Seal material
T PTFE seal
Displacement body
S Multi-layer safety diaphragm with optical rupture indicator
A Multi-layer safety diaphragm with diaphragm rupture signalling (contact)
H Diaphragm for hygienic head (on request)
Dosing head design
0 no valve springs
1 with 2 valve springs, Hastelloy C; 0.1 bar (standard with DN 32)
4 with relief valve, FPM seal, no valve springs
5 with relief valve, FPM seal, with valve springs (standard with DN 32)
6 with relief valve, EPDM seal, no valve spring
7 with relief valve, EPM seal, with valve spring (standard with DN 32)
H Hygienic head with tri-clamp connectors (max. 10 bar) (on request)
Hydraulic connector
0 Standard threaded connector (in line with technical data)
1 Union nut and PVC insert
2 Union nut and PP insert
3 Union nut and PVDF insert
4 Union nut and SS insert
7 Union nut and PVDF hose nozzle
8 Union nut and SS hose nozzle
9 Union nut and SS welding sleeve
Design
0with ProMinent® logo
1without ProMinent® logo
F Physiological safety with
regard to wetted mate‐
rials
FDA No. 21 CFR §177.1550
(PTFE)
FDA No. 21 CFR §177.2510
(PVDF)
Identity code
5

S3Ba Sigma 3 Basic type
M modified* * order-related design, refer to
order paperwork for pump
features
Electric power supply
_ Connection data - see motor nameplate
1 no motor, with B 5 flange, size 80 (DIN)
2 no motor, with C 56 flange (NEMA)
3 no motor, with B 5, size 71 (DIN)
Degree of protection
0 IP 55 (standard)
1 Exe design ATEX-T3 ***
2 Exd design ATEX-T4 ***
Stroke sensor
0 no stroke sensor (standard)
2 pacing relay (reed relay)
3 stroke sensor (Namur) for areas at
risk from explosion
Stroke length adjustment
0 manual (standard)
1, 2 Connection data - refer to
nameplate on servomotor
3 - 6 Connection data - refer to
nameplate on stroke control
motor
*** ATEX specification - refer to the nameplate on the pump, corre‐
sponding EU Declaration of Conformity for ATEX Machinery and
Ä Chapter 1.1 ‘Explanation of the ATEX label’ on page 6
FPM = fluorine rubber
1.1 Explanation of the ATEX label
in accordance with Directive 2014/34/EU and standards EN ISO
80079-36, -37
Unit group
II Units for use in areas with a potentially explosive atmosphere – excluding mines
Unit category
2 High level of safety – use possible in zones 1 and 2
3 Normal level of safety – use possible in zone 2
Identity code
6

Type of explosive atmosphere
G Mix of air and gases, vapours or mist
Areas at risk of explosion label
Ex in accordance with EN ISO 80079-36, -37
Type of protection
h non-electrical device
Explosion group
IIC Group IIC gas - refer, for example, to
Ä Tab. 1 ‘Divi‐
sion of gases into explosion groups and temperature
classes’ on page 7
IIB Group IIB gas - for example
Ä Tab. 1 ‘Division of
gases into explosion groups and temperature classes’
on page 7
Temperature class
T3 Max. surface temperature: 200 °C
T4 Max. surface temperature: 135 °C
Equipment protection level (EPL)
Gb high EPL in normal operation and in
the event of expected errors (corre‐
sponds to category “2G”.)
Gc normal EPL in normal operation (corre‐
sponds to category “3G”.)
Suffix X
X Special conditions - refer to the
Declarations of Conformity and
EC-type examination certifi‐
cates
Tab. 1: Division of gases into explosion groups and temperature classes
T4 T3 T2 T1
IIC - - Acethylene Hydrogen
IIB Ethyl ether - Ethylene Mains gas (coal gas)
IIA Acetaldehyde Benzine,
Diesel fuel,
Aircraft fuel,
Heating oils,
n-hexane
Ethyl alcohol,
n-butane,
n-butyl alcohol
Acetone,
Ammonia,
Benzene (pure),
Acetic acid,
Ethane,
Ethyl acetate,
Carbon oxide,
Methanol,
Propane,
Toluene
Identity code
7

You should always consider the explosion group AND
temperature class together:
You are safe in areas at risk from explosion with all the
gases listed in the table with equipment approved for
explosion group IIC and temperature class T4.
Equipment approved for explosion group IIB can also be
used for explosion group IIA – not for explosion group
IIC.
Equipment approved for temperature class T3 can also
be used for temperature classes T2 to T1 – not for tem‐
perature class T4.
Identity code
8

2 Safety chapter
CAUTION!
These operating instructions include notes and extracts
from German regulations relating to the operator's scope
of responsibility. This information does not discharge the
operator from his responsibility as an operator and is
intended only to remind him or make him aware of spe‐
cific problem areas. This information does not lay claim
to being complete, nor applicable to every country and
every type of application, nor to being unconditionally
up-to-date.
The following signal words are used in these operating instructions to
denote different severities of danger:
Signal word Meaning
WARNING Denotes a possibly dangerous sit‐
uation. If this is disregarded, you
are in a life-threatening situation
and this can result in serious inju‐
ries.
CAUTION Denotes a possibly dangerous sit‐
uation. If this is disregarded, it
could result in slight or minor inju‐
ries or material damage.
The following warning signs are used in these operating instructions to
denote different types of danger:
Warning signs Type of danger
Warning – high-voltage.
Warning – danger zone.
nOnly use the pump to meter liquid feed chemicals.
nOnly pumps with the identity code option "Multi-layer safety diaphragm
with visual rupture display" and "Multi-layer safety diaphragm with rup‐
ture signalling (contact)" are approved for use with flammable feed
chemicals with electrically conductive dosing heads, at back pres‐
sures of over 2 bar and only if the operator takes appropriate safety
measures.
nOnly pumps with the design "F - Physiologically safe with regard to
wetted materials" are approved for use in physiologically harmless
applications.
nOnly “H - Hygienic head” design pumps may be used for applications
in accordance with the hygienic requirements of the EHEDG
(www.ededg.org).
nThe pump may only be started up after it has been correctly installed
and started up in accordance with the technical data and specifica‐
tions contained in the operating instructions.
nObserve the general limitations with regard to viscosity limits, chem‐
ical resistance and density - see also the ProMinent Resistance List
(in the Product Catalogue or at www.prominent.com)!
nAll other uses or modifications are prohibited.
Identification of safety notes
Warning signs denoting different types of
danger
Intended use
Safety chapter
9

nThe pump is not intended for the metering of gaseous media and
solids.
nThe pump is not intended for the metering of explosive substances
and mixtures.
nThe pump is not intended for unprotected use outdoors.
nThe pump is only intended for industrial use.
nOnly allow trained and authorised personnel to operate the pump -
see the following table.
nYou have a responsibility to adhere to the information contained in the
operating instructions at the different phases of the unit's service life.
nYou have a responsibility to observe the information contained in the
operating instructions for the auxiliary equipment at the different
phases of their respective service lives.
nATEX designs only: Refer to the chapter "
Ä Chapter 2.1 ‘Safety infor‐
mation for ATEX designs’ on page 15 ".
Task Qualification
Storage, transport, unpacking Instructed person
Assembly Technical personnel, service
Planning the hydraulic installation Qualified personnel who have a
thorough knowledge of oscillating
diaphragm pumps
Hydraulic installation Technical personnel, service
Electrical installation Electrical technician
Start up Technical personnel
Operation Instructed person
Maintenance, repair Technical personnel, service
Decommissioning, disposal Technical personnel, service
Troubleshooting Qualified person, electrical techni‐
cian, instructed person, service -
depending on the requirement
Explanation of the table:
Trained, qualified personnel
A trained, qualified employee is deemed to be a person who is able to
assess the tasks assigned to him and recognise possible hazards based
on his training, knowledge and experience, as well as knowledge of perti‐
nent regulations. A trained, qualified employee must be able to perform
the tasks assigned to him/her independently with the assistance of
drawing documentation and parts lists. The assessment of a person's
technical training can also be based on several years of work in the rele‐
vant field.
Electrical technician
An electrical technician is able to complete work on electrical systems and
recognise and avoid possible dangers independently based on his tech‐
nical training and experience as well as knowledge of pertinent standards
and regulations. An electrical technician must be able to perform the tasks
assigned to him/her independently with the assistance of drawing docu‐
mentation, parts lists, terminal and circuit diagrams. The electrical techni‐
cian must be specifically trained for the working environment in which the
electrical technician is employed and be conversant with the relevant
standards and regulations.
Instructed person
An instructed person is deemed to be a person who has been instructed
and, if required, trained in the tasks assigned to him/her and possible dan‐
gers that could result from improper behaviour, as well as having been
instructed in the required protective equipment and protective measures.
Qualification of personnel
Safety chapter
10

Trained user
A trained user is a person who fulfils the requirements demanded of an
instructed person and who has also received additional training specific to
the system from ProMinent or another authorised distribution partner.
Service
The Service department refers to service technicians, who have received
proven training and have been authorised by ProMinent to work on the
system.
Ignition hazard Protective measures to be observed by the customer
Excessive surface pressure Limitation of the maximum temperature of the feed chem‐
ical
Too low ambient temperature Limitation of the minimum ambient temperature
Pump running hot The customer must monitor and maintain the pump in
accordance with the “Maintenance” chapter.
The customer must fit a relief valve on the discharge side.
Mechanically generated sparks from the mechanism with
low oil
The customer must monitor and maintain the pump in
accordance with the “Maintenance” chapter.
Mechanically generated sparks from a faulty valve The customer must monitor the capacity.
Electrical stray current in the event of a short circuit The customer must earth the pump and maintain the
earthing of the individual components.
Electrical stray current in the event of a lightning strike The customer must put in place suitable protective meas‐
ures outdoors.
Static electricity The customer must earth the earthing points and maintain
the potential equalisation cables of the individual compo‐
nents.
The customer must pay attention to potential equalisation
when dismantling.
Paint should not be applied too thickly.
Only clean plastic parts with a damp cloth.
Provide a temperature monitor on the dosing head with
feed chemical with critical friction properties.
The customer must wire the diaphragm rupture indicator in
such a way that it immediately stops the pump.
Electromagnetic waves (also lasers), ionising radiation
and ultrasound have an impact on the pump
The customer must put in place measures in accordance
with EN 1127-1, if need be.
Adiabatic compression and shock waves Feed chemical with electrical conductivity of < 50 pS/m,
which could form a combustible mixture: Do not allow the
unit to run dry – even when filling and emptying the liquid
end.
Exothermic reaction, including the self-combustion of dust The pump is not suitable for use with substances that
have a tendency towards exothermic reactions or self-
combustion. Put in place measures in accordance with EN
1127-1, if need be.
Deposits of dust Regularly clean the outside of the pump with a damp
cloth.
Summary of relevant ignition hazards and
protective measures put in place for the
Sigma in accordance with EN ISO
80079-36
Safety chapter
11

Ignition hazard Protective measures to be observed by the customer
Flammable feed chemicals Only material version SS or TT is permitted to pump flam‐
mable feed chemicals.
Do not allow it to run dry.
The operator must install suitable protective measures, for
example a flow meter.
The customer must wire the diaphragm rupture indicator in
such a way that it immediately stops the pump.
Ignition hazard with bought-in motor components Refer to the documentation for the motor.
Comply with the monitoring intervals.
The insulation resistance needs to be greater then 5
MOhm.
Provide a time-delay residual current device.
Provide overload protection by means of a motor protec‐
tion switch or an equivalent protective device.
Observe the minimum spacing between the air inlet on the
fan hood and any obstacles.
Avoid deposits of dust more then 5 mm deep.
Connect the earth wire.
Max. installation height: 1,000 m.a.s.l.
Ignition hazard with bought-in actuator or control drive
components
Refer to the documentation for the actuator.
Wait 3 minutes after switching off before opening the
housing.
Ignition hazard caused by bought-in proximity switch
NJ1.5-8GM-N (stroke sensor)
Refer to the documentation for the proximity switch (elec‐
trical installation, maintenance, ...).
WARNING!
Warning of hazardous feed chemical
Should a dangerous feed chemical be used: it may
escape from the hydraulic components when working on
the pump, material failure or incorrect handling of the
pump.
– Take appropriate protective measures before
working on the pump (e.g. safety glasses, safety
gloves, ...). Adhere to the material safety data sheet
for the feed chemical.
–Drain and flush the liquid end before working on the
pump.
Safety information
Safety chapter
12

WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious injuries.
Please ensure when handling hazardous substances
that you have read the latest safety data sheets provided
by the manufacture of the hazardous substance. The
actions required are described in the safety data sheet.
Check the safety data sheet regularly and replace, if
necessary, as the hazard potential of a substance can
be re-evaluated at any time based on new findings.
The system operator is responsible for ensuring that
these safety data sheets are available and that they are
kept up to date, as well as for producing an associated
hazard assessment for the workstations affected.
CAUTION!
Warning of feed chemical spraying around
Feed chemical can spray out of the hydraulic compo‐
nents if they are manipulated or opened due to pressure
in the liquid end and adjacent parts of the system.
– Disconnect the pump from the mains power supply
and ensure that it cannot be switched on again by
unauthorised persons.
– Depressurise the system before commencing any
work on hydraulic parts.
CAUTION!
Warning of feed chemical spraying around
An unsuitable feed chemical can damage the parts of
the pump that come into contact with the chemical.
– Take into account the resistance of the wetted mate‐
rials and the ProMinent Resistance List when
selecting the feed chemical - see the ProMinent
Product Catalogue or visit ProMinent.
WARNING!
Danger of injury to personnel and material damage
The pump must only be opened at those points required
to be opened by these operating instructions.
It may only be opened in other positions upon receipt of
written authorisation from the ProMinent head office,
Heidelberg.
CAUTION!
Danger of personnel injury and material damage
The use of untested third party parts can result in per‐
sonnel injuries and material damage.
– Only fit parts to metering pumps, which have been
tested and recommended by ProMinent.
Safety chapter
13

CAUTION!
Danger from incorrectly operated or inadequately main‐
tained pumps
Danger can arise from a poorly accessible pump due to
incorrect operation and poor maintenance.
– Ensure that the pump is accessible at all times.
–Adhere to the maintenance intervals.
In the event of an electrical accident, disconnect the mains cable from the
mains or press the emergency cut-off switch fitted on the side of the
system!
If feed chemical escapes, also depressurise the hydraulic system around
the pump as necessary. Adhere to the safety data sheet for the feed
chemical.
Prior to commissioning the system or system component, it is the respon‐
sibility of the system operator to obtain the latest safety data sheet for the
chemicals / equipment to be used with the system from the supplier.
Based on the information provided in the data sheets concerning health
and safety, water and environmental protection, and taking into considera‐
tion the actual operating environment on site, it is the responsibility of the
operator to create the legal framework for the safe operation of the system
or system component, such as for example the preparation of operating
instructions (operator's duties).
All isolating protective equipment must be installed for operation:
Protective equipment May only be removed by*:
Motor terminal box cover Electrical technician, ATEX elec‐
trical technician, Service
Protective cowling over the motor
fan
Service
Power end front cover Service
* Only if required by the operating instructions and if the mains cable
remains disconnected from the mains voltage.
The operator must be able to:
nPerform a risk assessment
nProduce and attach a nameplate
nIssue a Declaration of Conformity
nAdapt the operating instructions, if necessary
nInstall the motor correctly
1. Select a suitable motor - it must correspond to the data for one of
the motors from the "Motor data" table - see Chapter "Technical
data"
2. Fit the motor correctly on the flange (qualified personnel).
Information in the event of an emergency
Safety information for operating instruc‐
tions
Safety equipment
Isolating protective equipment
Requirements if the motor is being
installed independently
Install the motor - with designs without
motor
Safety chapter
14

3. As you have converted an "incomplete machine" into a complete
machine, you must perform a conformity assessment, risk assess‐
ment, create a Declaration of Conformity, fit a company name‐
plate, ... .
4. Complete the pump documentation / operating instructions.
Sound pressure level LpA < 70 dB according to EN ISO 20361
at maximum stroke length, maximum stroke rate, maximum back pressure
(water)
2.1 Safety information for ATEX designs
This chapter lists all safety information for ATEX designs. Safety informa‐
tion is listed again at the relevant points in these operating instructions.
This safety information is supplementary to or replaces the safety informa‐
tion for non-ATEX designs. If the safety information for ATEX designs con‐
tradicts the other safety information, then the safety information in this
chapter applies to ATEX designs.
nOnly operate an ATEX design pump in premises at risk from explosion
in accordance with the applicable guidelines.
nDo not expose the ATEX design to any sources of ionising radiation or
electromagnetic high frequency radiation in the range 104 ... 3x1015 Hz
or laser radiation or ultrasound or lightning without putting in place
measures in line with EN 80079-38.
nDo not allow the ATEX design to meter media, which tends to produce
exothermic reactions or self-ignite (examples of exothermic reactions:
pyrophoric substances with air, alkali metal with water, decomposition
of organic peroxides, polymerisation reactions), without taking effec‐
tive measures in accordance with EN 80079-38.
Task Qualification
Planning the hydraulic installation ATEX qualified person, ATEX elec‐
trical technician
Electrical installation ATEX electrical technician
Start up Skilled ATEX technician;
Checking the electrical installation:
Recognised competent person
Maintenance, repair ATEX qualified person, ATEX elec‐
trical technician
Troubleshooting Qualified ATEX technician or ATEX
electrical technician - depending on
the fault;
Checking the electrical installation:
Recognised competent person
Explanation of the table:
Recognised competent person
To carry out explosion hazard inspections the competent person must
have:
nCompleted a relevant course of study or
nHave a comparable technical qualification or
nAnother technical qualification combined with long-term experience of
safety technology.
Sound pressure level
Intended use
Qualification of personnel
Safety chapter
15

Make sure that the person is familiar with the relevant body of standards
and regulations and has worked in the field for at least one year. The
person needs to have opportunities for an exchange of experiences.
Specific requirements are placed on competent persons who perform tests
on repaired devices/parts. They must be recognised by the responsible
authorities (e.g. district council) in this respect.
Skilled technician with knowledge of ATEX explosion protection
The skilled technician with an additional explosion protection qualification
should be specifically trained for the work area in which he is employed
and be familiar with the relevant standards and regulations. The skilled
technician with an additional explosion protection qualification can work on
equipment and systems in areas protected from explosion and independ‐
ently recognise and avoid possible dangers based on his technical training
and experience.
The skilled technician with an additional explosion protection qualification
is familiar with all the standards and regulations applicable to explosion
protection.
The skilled technician with an additional explosion protection qualification
must comply with the provisions of the applicable statutory directives on
accident prevention.
Electrical technician with knowledge of ATEX explosion protection
An electrical technician with an additional explosion protection qualification
should be specifically trained for the field of work in which he is employed
and be familiar with the relevant standards and regulations. An electrical
technician with an additional explosion protection qualification can work on
electrical systems and independently recognise and avoid possible dan‐
gers based on his technical training and experience.
The electrical technician with an additional explosion protection qualifica‐
tion is familiar with all the standards and regulations applicable to explo‐
sion protection.
An electrical technician with an additional explosion protection qualification
must comply with the provisions of the applicable statutory directives on
accident prevention.
Recognised competent person
To carry out explosion hazard inspections the competent person must
have:
nCompleted a relevant course of study or
nHave a comparable technical qualification or
nAnother technical qualification combined with long-term experience of
safety technology.
Make sure that the person is familiar with the relevant body of standards
and regulations and has worked in the field for at least one year. The
person needs to have opportunities for an exchange of experiences.
Specific requirements are placed on competent persons who perform tests
on repaired devices/parts. They must be recognised by the responsible
authorities (e.g. district council) in this respect.
Ignition hazard Protective measures to be observed by the customer
Excessive surface pressure Limitation of the maximum temperature of the feed chem‐
ical
Too low ambient temperature Limitation of the minimum ambient temperature
Pump running hot The customer must monitor and maintain the pump in
accordance with the “Maintenance” chapter.
The customer must fit a relief valve on the discharge side.
Summary of relevant ignition hazards and
protective measures put in place for the
Sigma in accordance with EN ISO
80079-36
Safety chapter
16

Ignition hazard Protective measures to be observed by the customer
Mechanically generated sparks from the mechanism with
low oil
The customer must monitor and maintain the pump in
accordance with the “Maintenance” chapter.
Mechanically generated sparks from a faulty valve The customer must monitor the capacity.
Electrical stray current in the event of a short circuit The customer must earth the pump and maintain the
earthing of the individual components.
Electrical stray current in the event of a lightning strike The customer must put in place suitable protective meas‐
ures outdoors.
Static electricity The customer must earth the earthing points and maintain
the potential equalisation cables of the individual compo‐
nents.
The customer must pay attention to potential equalisation
when dismantling.
Paint should not be applied too thickly.
Only clean plastic parts with a damp cloth.
Provide a temperature monitor on the dosing head with
feed chemical with critical friction properties.
The customer must wire the diaphragm rupture indicator in
such a way that it immediately stops the pump.
Electromagnetic waves (also lasers), ionising radiation
and ultrasound have an impact on the pump
The customer must put in place measures in accordance
with EN 1127-1, if need be.
Adiabatic compression and shock waves Feed chemical with electrical conductivity of < 50 pS/m,
which could form a combustible mixture: Do not allow the
unit to run dry – even when filling and emptying the liquid
end.
Exothermic reaction, including the self-combustion of dust The pump is not suitable for use with substances that
have a tendency towards exothermic reactions or self-
combustion. Put in place measures in accordance with EN
1127-1, if need be.
Deposits of dust Regularly clean the outside of the pump with a damp
cloth.
Flammable feed chemicals Only material version SS or TT is permitted to pump flam‐
mable feed chemicals.
Do not allow it to run dry.
The operator must install suitable protective measures, for
example a flow meter.
The customer must wire the diaphragm rupture indicator in
such a way that it immediately stops the pump.
Ignition hazard with bought-in motor components Refer to the documentation for the motor.
Comply with the monitoring intervals.
The insulation resistance needs to be greater then 5
MOhm.
Provide a time-delay residual current device.
Provide overload protection by means of a motor protec‐
tion switch or an equivalent protective device.
Observe the minimum spacing between the air inlet on the
fan hood and any obstacles.
Avoid deposits of dust more then 5 mm deep.
Connect the earth wire.
Max. installation height: 1,000 m.a.s.l.
Safety chapter
17

Ignition hazard Protective measures to be observed by the customer
Ignition hazard with bought-in actuator or control drive
components
Refer to the documentation for the actuator.
Wait 3 minutes after switching off before opening the
housing.
Ignition hazard caused by bought-in proximity switch
NJ1.5-8GM-N (stroke sensor)
Refer to the documentation for the proximity switch (elec‐
trical installation, maintenance, ...).
WARNING!
ATEX pumps in areas at risk from explosion
– The operator must observe the Operator Directive
when operating equipment in areas at risk of explo‐
sion.
–Only clean plastic parts carefully with a damp cloth
to avoid electrostatic charges and sparks.
WARNING!
Motor may overheat
If the necessary cooling air supply is not guaranteed, the
motor may overheat. In an area at risk from explosion, it
could trigger an explosion.
– Maintain sufficient clearance between the air intake
opening and the walls. The distance should be
greater than 1/4 of the diameter of the air intake
opening.
–The fan must not suck in the exhaust air from other
devices.
WARNING!
ATEX pumps in areas at risk from explosion
– Metering pumps must have an appropriate safety
relief valve on the discharge side (to protect against
excessive heating due to overloading or impact
sparks caused by the breakage of power end parts).
WARNING!
ATEX pumps in areas at risk from explosion
– A flow control is needed to stop the pump as soon
as no flow is detected.
WARNING!
ATEX pumps and flammable media
Only with material versions PP_, PV_ and PC_: The igni‐
tion temperature is reduced significantly below the igni‐
tion temperature at atmospheric pressure due to com‐
pression with the discharge stroke of the possibly
ignitable vapour-air mixture.
– Do not allow it to run dry. Take appropriate protec‐
tive measures.
–Immediately switch off the pump in the event of a
diaphragm rupture.
Safety information
Safety chapter
18

WARNING!
ATEX pumps in areas at risk from explosion
If feed chemicals are metered, which tend to produce
exothermic reactions or self-ignite (examples of exo‐
thermic reactions: pyrophoric substances with air, alkali
metal with water, decomposition of organic peroxides,
polymerisation reactions), they can lead to high tempera‐
tures and ignition.
– Put in place measures in accordance with EN
80079-38.
WARNING!
ATEX pumps in areas at risk from explosion
If abrasive media is being metered, it will escape as
soon as all layers of the diaphragm have eroded
through.
– Wire the electrical diaphragm rupture indicator to
stop the pump in the event of a diaphragm rupture.
WARNING!
ATEX pumps in areas at risk from explosion
– Electrically wire all electrical units cleanly and per‐
manently to an electrically clean earthing point, -
e.g. with an earthing bar on your system.
–Electrically connect the electrical units fitted with a
potential equalisation cable to each other, cleanly
and permanently, to an electrically clean potential
equalisation point - e.g. with a potential equalisation
bar on your system.
– Note the enclosed documentation for the individual
electrical components.
WARNING!
ATEX pumps in areas at risk from explosion
– Use a suitable motor protection switch to protect
power end motors. Use motor protection approved
for this application with Ex"e" motors. (Protection
against warming caused by overloading)
–Provide a time-delay residual current device.
– Observe the enclosed operating instructions for the
Ex motor.
WARNING!
The following applies in areas at risk from explosion:
– Note the details of the type examination certificate
PTB 00 ATEX 2048 X for the Namur sensor
NJ1.5-8GM-N as well.
Safety chapter
19

WARNING!
ATEX pumps in areas at risk from explosion
– Make sure that a suitably competent person checks
whether the appropriate installation information from
the "Installation" chapter has been implemented cor‐
rectly.
–Make sure that a "recognised competent person"
checks the electrical installation and in particular the
intrinsically safe power circuits.
– Set the opening pressure of the relief valve to a
maximum of no more than 1.5 times the nominal
pressure of the pump.
WARNING!
ATEX pumps in areas at risk from explosion
– Carry out a general check to ensure that the system
is working properly, particularly the power end and
bearings, by regularly monitoring it (for leaks,
noises, temperatures, smell, etc.).
– Do not allow the pump to run hot due to a lack of oil.
With lubricated metering pumps, regularly check for
the presence of lubricant, for example by checking
the liquid level, visual leak control etc. If oil is
leaking, examine the leakage point immediately and
eliminate the cause.
– Check the correct operation of the relief valve down‐
stream of the pump. In premises at risk from explo‐
sion, the relief valve should prevent the gear from
becoming overloaded and becoming hot.
– Observe the enclosed operating instructions for the
Ex motor.
– Only use a moist cloth when cleaning plastic parts.
– Prevent serious deposits of dust on the motor.
– Consider potential equalisation before you approach
any pump equipment that could be at a different
electrical potential (such as pipes or tools).
– Replace wear parts, such as bearings, when there is
an identifiable incidence of unacceptable wear.
– Appropriate diagnostic equipment for bearing
damage is recommended for the premature detec‐
tion of bearing damage.
– Check whether the potential equalisation lines are
all sitting correctly with clean contacts. Use the equi‐
potential bonding drawings as an aid – see
Appendix.
– Check whether the earth lines are all sitting correctly
with clean contacts. Use the equipotential bonding
drawings as an aid – see Appendix.
– Only use genuine spare parts as replacements.
The entire installation supplied is provided ex works with the necessary
potential equalisation lines.
Electrically wire an additional potential equalisation cable from the poten‐
tial equalisation cables from this system cleanly and permanently to an
electrically clean potential equalisation point, e.g. to a potential equalisa‐
tion bar on site.
Potential equalisation of frame
An earthing point for the customer is fitted on the frame.
Potential equalisation line (prescribed in
the area at risk from explosion)
Safety chapter
20