ProMinent Sigma / 2 Basic S2Ba User manual

Diaphragm motor-driven metering pump
Sigma/ 2 Basic type S2Ba
Operating instructions
P_SI_0074_SW
Target group: Minimally instructed personnel
EN
Original operating instructions (2006/42/EC)Part no. 985908 Version: BA SI 107 07/22 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 Markings and warning symbols............................................... 9
2.2 Intended use........................................................................... 9
2.3 Personnel qualification.......................................................... 10
2.4 Safety information................................................................. 11
2.5 Isolating protective equipment.............................................. 13
2.6 Requirements if the motor is being installed independently.. 13
2.7 Safety information for ATEX designs.................................... 14
2.7.1 Intended use...................................................................... 14
2.7.2 ATEX qualification of personnel......................................... 14
2.7.3 ATEX safety information.................................................... 15
2.7.4 Potential equalisation lines and other features.................. 19
2.7.5 ATEX features.................................................................... 20
2.7.6 Safety equipment............................................................... 21
2.8 Explanation of the ATEX label.............................................. 22
3 Storage, transport and unpacking................................................. 25
4Overview of equipment and control elements............................... 26
5 Functional description.................................................................... 28
5.1 Pump..................................................................................... 28
5.2 Liquid end.............................................................................. 28
5.3 Integral relief valve................................................................ 28
5.4 Multi-layer safety diaphragm................................................. 29
6 Assembly....................................................................................... 30
6.1 Assembly of the motor - with designs without motor............. 30
6.2 Base...................................................................................... 31
6.3 Space requirement................................................................ 31
6.4 Fastening.............................................................................. 32
7 Installation, hydraulic..................................................................... 33
7.1 Basic installation notes.......................................................... 36
8 Installation, electrical..................................................................... 37
9 Start up.......................................................................................... 42
10 During operation............................................................................ 46
11 Maintenance.................................................................................. 47
11.1 Safety information............................................................... 47
11.2 Inspection, daily.................................................................. 48
11.3 Standard liquid ends........................................................... 48
12 Repair............................................................................................ 51
12.1 Safety information, repair.................................................... 51
12.2 Cleaning valves................................................................... 51
12.3 Replacing the diaphragm.................................................... 53
13 Troubleshooting............................................................................. 57
14 Decommissioning.......................................................................... 60
15 Technical data............................................................................... 62
15.1 Performance data................................................................ 62
15.2 Viscosity.............................................................................. 63
15.3 Shipping weight................................................................... 64
15.4 Wetted materials................................................................. 64
15.5 Ambient conditions.............................................................. 64
15.5.1 Ambient temperatures...................................................... 64
Table of contents
3

15.5.2 Media temperatures......................................................... 64
15.5.3 Air humidity...................................................................... 65
15.6 Installation height................................................................ 65
15.7 Motor data........................................................................... 65
15.8 Stroke actuator.................................................................... 66
15.9 Stroke control drive............................................................. 66
15.10 Diaphragm rupture sensor................................................ 66
15.11 Stroke sensor "Sigma"...................................................... 67
15.12 Relays............................................................................... 67
15.13 Gear oil.............................................................................. 68
15.14 Sound pressure level........................................................ 68
15.15 Supplementary information for modified versions............. 68
16 Diagrams for setting the metering capacity................................... 69
17 Dimensional drawings................................................................... 70
18 Potential equalisation drawings for Sigma Basic Type.................. 72
19 Motor data sheet standard motor.................................................. 73
20 Exploded drawings for Sigma/ 2.................................................... 74
21 Wear parts of Sigma/ 2.................................................................. 79
21.1 Standard.............................................................................. 79
21.2 Physiological safety............................................................. 79
22 Declaration of Conformity for Machinery....................................... 81
23 Declaration of Incorporation for Machinery.................................... 82
24 Declaration of Conformity for ATEX Machinery............................. 83
25 Declaration of Conformity for ATEX Machinery............................. 84
26 Index.............................................................................................. 85
Table of contents
4

1 Identity code
S2Ba Sigma 2 Basic type
H Main power end, diaphragm
Type: Output
_ _ _ _ Performance data at maximum back pressure and type: refer to nameplate on the pump
housing
Dosing head material
PV PVDF
SS stainless steel
TT PTFE + carbon
Seal material
T PTFE seal
F FDA-compliant
G 1935/2004 (10/2011)
H Hygienic design
Displacement body
S Multi-layer safety diaphragm with optical rupture indicator
A Multi-layer safety diaphragm with diaphragm rupture signalling (contact)
Dosing head version
0 no valve springs
1with 2 valve springs, Hastelloy® C; 0.1 bar
4 ** with relief valve, FPM seal, no valve springs
5 ** with relief valve, FPM seal, with valve springs
6 ** with relief valve, EPDM seal, no valve spring
7 ** with relief valve, EPDM seal, with valve spring
H Hygienic pump head with tri-clamp connectors (max. 10 bar)
Hydraulic connector
0 Standard threaded connector (in line with the 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 sleeve
8 Union nut and SS hose sleeve
9 Union nut and SS welding sleeve
C Aseptic clamp fitting DIN 11864-3
(Standard for hygienic design)
Design
0 with ProMinent-Logo (standard)
1 without ProMinent logo
M modified, order-specific design, see order paperwork for
pump features
Identity code
5

S2Ba Sigma 2 Basic type
Electric power supply
_ Connection data - see motor nameplate
S 3-phase, 230/400 V, 50/60 Hz
T 3-phase, 230/400 V, 50/60 Hz, with PTC
R Speed control motor, 3-phase 230/400 V, 50 Hz,
with PTC
1 no motor, with B14 flange, size 71 (DIN)
2 no motor, with C 42 flange (NEMA)
3 no motor, with B 5, size 56 (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 with servomotor, 85 ... 265 V,
50/60 Hz
4 with stroke control motor
0/4...20 mA, 85 ... 265 V,
50/60 Hz
FPM = fluorine rubber
** Standard with hose sleeve in the bypass. Threaded connection on request.
*** ATEX specification - refer to the nameplate on the pump, corresponding EU Declaration of Conformity for ATEX
Machinery and
Ä Chapter 1.1 ‘Explanation of the ATEX label’ on page 6
1.1 Explanation of the ATEX label
in accordance with Directive 2014/34/EU and standards EN ISO
80079-36, -37
Explanation of the pump’s ATEX labelling Sigma/ 2
Unit group
II No mines or associated underground systems, which can be endangered by firedamp - Unit for use in
other areas at risk from explosion
Other parameters
3G Ex h (Example)
Explosion group
IIC for explosion group IIC gas
- refer to your explosion protection document
Identity code
6

Explanation of the pump’s ATEX labelling Sigma/ 2
IIB for explosion group IIB gas
- refer to your explosion protection document
Temperature class
T3 for Temperature class T3 gas
- refer to your explosion protection document
T4 for Temperature class T4 gas
- refer to your explosion protection document
Equipment protection level (EPL)
Gb high EPL
use possible in zones 1 and 2
- refer to your explosion protection document
Gc normal EPL
use possible in zone 2
- refer to your explosion protection document
Suffix X
X Special conditions - refer to the Declarations of Conformity
and EC-type examination certificates
WARNING!
Example of EX-designation: Where may I use the ATEX
version of the Sigma/ 2?
The pump designation is:
" ... II 3G Ex h IIB T4 Gc".
The pump label corresponds to “Unit group” II: the pump
may only be used in overground production systems,
which are not at risk from firedamp.
The inserted pump label "3G Ex h" does not need to be
discussed here.
The additional pump label in the example states “Explo‐
sion group” IIB and “Temperature class” T4:
The
Ä Tab. 1 ‘Example of the division of gases into
explosion groups and temperature classes’ on page 8
is shown as an example: the pump can be used for ethyl
ether or a comparable gas - refer to the material safety
data sheet for the gas or your explosion protection docu‐
ment.
The pump in the example could also be suitable for
gases that require only “Explosion group” IIA and “Tem‐
perature class” T3, T2 or T1 - but not for T5 and T6.
"EPL" Gc is shown in the next example: Use only in
zone 2 – but not in zone 1 or zone 0.
Identity code
7

Tab. 1: Example of the division of gases into explosion groups and temperature classes
T6
85 °C
T5
100 °C
T4
135 °C
T3
200 °C
T2
300 °C
T1
450 °C
IIC Carbon disulphide - Trichlorosilane - Ethyne Hydrogen
IIB - - Ethyl ether - Ethene Mains gas (coal gas)
IIA - - Acetaldehyde Benzine,
Diesel fuel,
Aircraft fuel,
Heating oils,
n-hexane
Ethanol,
n-butane,
n-butyl alcohol
Acetone,
Ammonia,
Benzene (pure),
Acetic acid,
Ethane,
Ethyl acetate,
Carbon oxide,
Methanol,
Propane,
Toluene
WARNING!
Example 2 - EX-designation: Where may I use the ATEX
version of the Sigma/ 2?
The pump designation is " ... II 2G Ex h IIC T4 Gb X".
The pump label corresponds to “Unit group” II: the pump
may only be used in overground production systems,
which are not at risk from firedamp.
The inserted pump label "2G Ex h" does not need to be
discussed here.
The pump label is shown in the example “Explosion
group” IIC and “Temperature class” T4:
The
Ä Tab. 1 ‘Example of the division of gases into
explosion groups and temperature classes’ on page 8
shows the following: the pump can be used for all gases
of "Explosion group” IIC and “Temperature class” T4 -
refer to your explosion protection document.
The pump in the example could also be suitable for
gases that require only “Explosion group” IIB or IIA and
“Temperature class” T3, T2 or T1 – but not for T5 and
T6.
"EPL" Gb is shown in the next example: use is possible
in zone 1 and zone 2 – but not in zone 0.
“X” indicates “Special conditions” - see EU Declaration of
Conformity or type test certification for the pump or addi‐
tional assemblies. This might involve another lower limit
for the ambient temperature, e.g. -10 °C .
Identity code
8

2 Safety chapter
These operating instructions include notes and extracts from German reg‐
ulations relating to the operator's scope of responsibility. The notes and
quotes do not in any way release the operator from his/her responsibility
as operator. The notes and quotes are only intended to remind the oper‐
ator or make them aware of specific problem areas. The notes and quotes
do not in any way claim to be complete, nor applicable to every country
and every type of application, nor to being unconditionally up-to-date.
2.1 Markings and warning symbols
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.
2.2 Intended use
NOTICE!
Wear caused by "Pump ON/OFF" using the mains con‐
nection
Frequent switching of the pump on and off (>2 times
each day) using the supply voltage leads to increased
wear in the pump. The pump is not technically designed
for this.
If necessary, use the "Pause" function to switch the
pump to standby mode. Do not switch the pump on and
off using the supply voltage to spare a pause input.
Identification of safety notes
Warning signs denoting different types of
danger
Safety chapter
9

nOnly use the pump to meter liquid feed chemicals.
nPumps with the identity code option "Multi-layer safety diaphragm with
rupture signalling (contact)" are only approved for use with flammable
feed chemicals with electrically conductive dosing heads, at back
pressures of over 2 bar and only if the operator takes appropriate
safety measures.
Pumps with the identity code option "Multi-layer safety diaphragm with
rupture signalling (contact)" are only approved for use with hazardous
feed chemicals, at back pressures of over 2 bar and only if the oper‐
ator takes appropriate safety measures.
nPumps with the identity code option "Multi-layer safety diaphragm with
rupture signalling (contact)" are only approved for use with hazardous
feed chemicals, at back pressures of over 2 bar and only if the oper‐
ator takes appropriate safety measures.
nOnly "H - Hygienic head" design of pumps may be used for applica‐
tions in accordance with the hygiene requirements of closed pro‐
cesses and wet cleaning without dismantling.
nOnly use the pump once it has been correctly installed and started up
in accordance with the technical data and specifications 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.
nThe pump is not designed to meter 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 not intended for private use.
nOnly trained and authorised personnel should be allowed to operate
the pump - see the table below.
nYou have a duty to observe the information contained in the operating
instructions during the different phases of the service life of the unit.
nYou have a responsibility to observe the information contained in the
operating instructions for the auxiliary equipment at the different
phases of its respective service life.
nATEX designs only: Refer to the chapter "
Ä Chapter 2.7 ‘Safety infor‐
mation for ATEX designs’ on page 14 ".
2.3 Personnel qualification
Task Qualification
Storage, transport, unpacking Instructed person
Assembly Technical personnel, Service
Planning the hydraulic installation Qualified personnel with a thorough knowledge of oscillating displacement
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 technician, instructed person, Service -
depending on the requirement
Safety chapter
10

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 their 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.
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
Service refers to service technicians who have received certified training
and have been authorised by ProMinent to work on the system.
2.4 Safety information
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.
Explanation of the table:
Safety information
Safety chapter
11

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 may spray out of the hydraulic compo‐
nents if they are tampered with or opened due to pres‐
sure 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.
– Ensure that the system is at atmospheric pressure
before commencing any work on hydraulic parts of
the system.
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
12

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/power supply or press the emergency cut-off switch fitted on the
side of the system.
If feed chemical escapes, ensure that the hydraulic environment around
the pump is at atmospheric pressure as well. Refer to the material 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 material 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
consideration the actual operating environment on site, it is the responsi‐
bility 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).
2.5 Isolating protective equipment
All isolating protective equipment must be installed for operation:
Protective equipment May only be removed by*:
Motor terminal box cover Electrical technician, ATEX electrical 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.
2.6 Requirements if the motor is being installed independently
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
Install the motor - with designs without
motor
Safety chapter
13

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)
2.7 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.
2.7.1 Intended use
nOnly operate an ATEX design of pump in premises at risk from explo‐
sion in accordance with the applicable guidelines.
nPumps with the identity code option "Multi-layer safety diaphragm with
rupture signalling (contact)" are only approved for use with flammable
feed chemicals with electrically conductive dosing heads, at back
pressures of over 2 bar and only if the operator takes appropriate
safety measures. Rupture signalling must switch off the pump immedi‐
ately.
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.
2.7.2 ATEX qualification of personnel
Task Qualification
Planning the hydraulic installation ATEX qualified person, ATEX electrical technician
Electrical installation ATEX electrical technician
Start up Skilled ATEX technician;
Checking the electrical installation: Recognised competent person
Maintenance, repair ATEX qualified person, ATEX electrical 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:
Sound pressure level
Safety chapter
14

ncompleted a relevant course of study or
nhave a comparable technical qualification or
nanother technical qualification combined with long-term experience of
safety technology.
The person must have knowledge of the relevant body of standards and
regulations and have worked in the field for at least one year. The person
needs to have opportunities for an exchange of experiences.
Competent persons who perform tests on repaired equipment/parts are
subject to specific requirements. They must be recognised by the respon‐
sible 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/she 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
independently recognise and avoid possible dangers based on his/her
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 they are
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 dangers based on their 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.
The person must have knowledge of the relevant body of standards and
regulations and have worked in the field for at least one year. The person
needs to have opportunities for an exchange of experiences.
Competent persons who perform tests on repaired equipment/parts are
subject to specific requirements. They must be recognised by the respon‐
sible authorities (e.g. district council) in this respect.
2.7.3 ATEX safety information
Summary of relevant ignition hazards and
protective measures put in place for the
Sigma in accordance with EN ISO
80079-36
Safety chapter
15

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.
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.
Safety chapter
16

Ignition hazard Protective measures to be observed by the customer
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!
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).
Safety information
Safety chapter
17

WARNING!
ATEX pump and flammable media
The ignition temperature is reduced significantly below
the ignition temperature at atmospheric pressure due to
compression with the discharge stroke of the possibly
ignitable vapour-air mixture.
– Only use pumps with electrically conductive dosing
heads.
–Do not allow it to run dry. Take appropriate safety
measures – for instance, install a flow meter.
– The customer must wire a diaphragm rupture indi‐
cator or flow meter to ensure that it immediately
stops the pump.
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
immediately stop the pump in the event of a dia‐
phragm rupture.
WARNING!
ATEX pumps in areas at risk from explosion
– Electrically wire all electrical assemblies cleanly and
permanently to an electrically clean earthing point, -
e.g. with an earthing bar on your system.
–Electrically connect the assemblies 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 documentation supplied 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-delayed residual current safety
device.
– Observe the enclosed operating instructions for the
Ex motor.
Safety chapter
18

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.
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 regular monitoring (for leaks, noises,
temperatures, smell ...).
–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.
2.7.4 Potential equalisation lines and other features
The entire installation supplied is provided ex works with the necessary
potential equalisation lines.
Potential equalisation lines (required in
areas at risk from explosion)
Safety chapter
19

Electrically wire an additional potential equalisation cable from this system
of potential equalisation lines cleanly and permanently to an electrically
clean potential equalisation point, e.g. to a potential equalisation bar on
site.
5–25 V DC, in accordance with Namur or DIN 60947-5-6, potential-free
design.
Specification Value
Nominal voltage * 8 V DC
Power consumption - active surface uncovered > 3 mA
Power consumption - active surface covered < 1 mA
Rated switching distance 1.5 mm
* Ri ~ 1 kΩ
Cable colour Polarity
blue -
brown +
Install the sensor in accordance with the chapter "Installation, electrical".
Refer to its documentation.
Sensor name: NJ1.5-8GM-N.
Check the pump installation for:
nleaks
nAbnormal noises or squeaks
nabnormal temperatures
nabnormal odours
nabnormal vibrations
nother anomalies
WARNING!
Stop the pump immediately in the event of any anoma‐
lies when inspecting the pump and rectify them immedi‐
ately. ProMinent Service may be needed if required.
2.7.5 ATEX features
Interval Maintenance work
After 18,000 operating hours or 23,500 oper‐
ating hours (API)
Adhere to the motor manufacturer's recommendations - see oper‐
ating instructions for the motor.
Screw in the oil drainage plug (2) with a new seal.
Namur sensor (Specified for EX zones)
Inspection, daily
Maintenance
Safety chapter
20