Fristam Pumpen FP Series User manual

ATEX
Additional operator's manual
for
operating Fristam pumps and units
in explosive atmospheres in accordance with
Directive 2014/34/EU
For the series
Centrifugal pumps Positive displacement Side channel pumps
pumps
FP / FPE / FP…V / FPM
FPH / FPEH / FPH…V
FC
FSPE / FSP…V / FSM
FPC
FL / FL2 / FL3 FZ / FZM
FK
FKL
FDS equals VPS
Pump type:
Pump no.:
Additional ATEX operator's manual/edition: June 2019 (Version 15.2)

2
Copyright
© Copyright 2019 Fristam Pumpen KG (GmbH & Co.) All rights reserved. The
contents of this operator's manual, including images and design, are subject to the
protection of copyrights and other trade-related intellectual property rights. It is not
permitted to disseminate or alter the content of this manual. Nor may the said
content be copied, disseminated, altered or made available to third parties for
commercial purposes.
The original version of this document is the German version. Other languages are
translations of the original operator's manual.

3
Foreword
This additional operator's manual describes important information and instructions
for the proper operation of the respective Fristam pumps and units in an explosive
atmosphere in compliance with the requirements of EU Directive 2014/34/EU. The
additional operator's manual is only valid together with the "Original operator's
manual and assembly instructions". Both documents must be used and delivered
with the pump if passed on to third parties.
In order to avoid risks, the instructions contained therein must be strictly observed.
The safety regulations applicable at the installation site are not taken into account
and must be guaranteed separately by the operator.
Read the additional operator's manual carefully before installing and commissioning
the pump. Keep the manual in a place which is accessible to users at all times.
Failure to comply with the safety instructions may result in personal injury and
environmental risks as well as the loss of warranty claims and claims for defects.

4
Contents
Foreword .............................................................................................................................. 3
1Intended use.................................................................................................................. 6
1.1 ATEX version .......................................................................................................... 6
1.2 Restriction of normal intended use Zone 2 (outside)............................................... 6
2Safety instructions......................................................................................................... 7
2.1 Explanation of symbols............................................................................................ 7
2.2 Operating personnel................................................................................................ 7
3Basic safety instructions................................................................................................ 7
3.1 Working range......................................................................................................... 8
3.1.1 Ambient conditions at the place of installation .................................................. 9
3.1.2 Pumping medium.............................................................................................. 9
3.1.3 Temperature operating limits .......................................................................... 10
3.1.3.1 Temperature limits of pump types FP / FPE / FP…V / FPH / FPEH /
FPH…V / FSPE / FSP…V ........................................................................................11
3.1.3.2 Temperature limits of pump type FC..........................................................12
3.1.3.3 Temperature limits of pump type FPC........................................................12
3.1.3.4 Temperature limits of pump type FZ ..........................................................13
3.1.3.5 Temperature limits of pump types FPM/FSM/FZM.....................................13
3.1.3.6 Temperature limits of pump type FK ..........................................................14
3.1.3.7 Temperature limits of pump type FL...........................................................14
3.1.3.8 Temperature limits of pump type FKL ........................................................15
3.1.3.9 Temperature limits of pump type FDS........................................................15
3.2 Assembly, modifications and changes .................................................................. 16
3.2.1 Coatings.......................................................................................................... 16
3.3 Motor..................................................................................................................... 16
3.4 Coupling................................................................................................................ 17
4Classification and marking........................................................................................... 17
4.1 Rating plate........................................................................................................... 17
4.2 FDS rating plate .................................................................................................... 18
4.3 Marking according to Directives 2014/34/EU and DIN EN ISO 80079-36............. 18
4.3.1 Marking example for pump and pump unit according to ATEX....................... 20
5Installation and commissioning.................................................................................... 21
5.1 Installation and transport....................................................................................... 21
5.2Electrical connection.............................................................................................. 22

5
5.3 Grounding.............................................................................................................. 22
5.4 Filling the pump..................................................................................................... 22
5.4.1 Seal supply systems....................................................................................... 23
5.4.2 Lubricant......................................................................................................... 23
5.5 Direction of rotation check..................................................................................... 24
5.6 Commissioning of control, monitoring and control equipment............................... 24
6Operation..................................................................................................................... 25
6.1 Safety instructions for operation............................................................................ 25
6.2 Safety instructions for the operation of pumps with shaft seals............................. 26
6.3 Safety instructions for the operation of pumps with magnetic coupling ................. 28
6.4 Monitoring parameters........................................................................................... 29
6.4.1 Categories 2&3, Zones 1&2 or 21&22 (Ex-outside) monitoring parameters ... 30
6.4.2 Categories 2&3, Zones 1&2 (Ex-inside) monitoring parameters..................... 33
7Maintenance................................................................................................................ 35
7.1 Assembly / disassembly........................................................................................ 37
7.2 Replacement parts ................................................................................................ 38
8Appendix ..................................................................................................................... 39
8.1 EU DECLARATION OF CONFORMITY................................................................ 39
8.2 EU DECLARATION OF CONFORMITY FOR FDS ............................................... 41

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1 Intended use
The pumps and pump units of Fristam pumps are designed for use in the food,
pharmaceutical, chemical and other industries and are individually designed and
manufactured according to customer requirements.
The base materials and all sealing materials were selected according to the
requirements of the pumping medium. The pump may only be used for the medium
for which it was designed (see order-specific document parts in the appendix).
Fristam Pumpen is not liable for any damage resulting from misuse. The risk is borne
solely by the operator.
A more reliable and orderly use of the pump also requires compliance with the
instructions of the "Original operator’s manual and assembly instructions" with regard
to use and operation as well as inspection and maintenance.
Where it is to be expected that an explosive gas atmosphere will occur
occasionally/rarely (zone 1; zone 2 Ex-inside) inside, operation of the pump is
possible with FPC, FZ, FDS (see section 3.1) in the appropriate configuration.
For all other Fristam pump types, the pumps must always be filled with pumping
medium during normal operation (zone 1; zone 2). Deviations from these
specifications of the intended use can be found in the order-related documents.
Pumps that are approved for an occasional occurrence of an explosive gas atmosphere
in the pump interior (Zone1, Zone2; Ex-Inside) must be clearly defined as such in the
order-related documentation or in the additional ATEX operator's manual. In addition to
the ATEX marking, these pumps are marked with an "X" on the rating plate. This "X"
means that important additional conditions for safe use must be observed and adhered
to. These additional conditions are explained in the order-related documents and in the
additional ATEX operator's manual.
For more information, please contact Fristam Pumpen
1.1 ATEX version
The pumps and pump units from Fristam Pumpen, which are used in explosive
atmospheres according to ATEX, are based on the respective standard version and
configured in their constructive design in such a way that their suitability is
guaranteed at all times. Terms for the definition of pump and pump unit can be found
in the type-related "Original operator's manual and assembly instructions".
1.2 Restriction of normal intended use Zone 2 (outside)
The FZ EX side channel pump and FPC EX centrifugal pump with single mechanical
seal must not be used for self-priming, venting the suction pipe, emptying product
pipes and tanks and the area where the pump is pumped out of the vacuum.
This creates the risk of dry running of the sliding pairs and an uncontrolled
temperature increase of the sliding surfaces.
An Ex zone inside the pump does not constitute normal operation of the FZ EX side
channel pump and FPC EX centrifugal pump with single mechanical seal.

7
An Ex zone inside the pump with single mechanical seal is not permitted and must
be completely excluded by the monitoring parameters listed (see section 6.4).
2 Safety instructions
2.1 Explanation of symbols
Safety-related instructions for operation in an explosive atmosphere
General safety instructions for operation
Instructions and information to facilitate operation of the pump and
prevent damage
2.2 Operating personnel
The operating company of the pump and/or system must ensure that all work during
installation, maintenance, cleaning and transport of the pump as well as its operation
is carried out exclusively by qualified and authorized personnel.
The personnel employed must have received proven training on the use of pumps in
explosive atmospheres in accordance with ATEX as well as instruction in this
additional operator's manual. A written work permit must be issued before installation
or maintenance. All work is only permitted if any potentially explosive atmosphere is
excluded.
3 Basic safety instructions
Please read the contents of the type-related "Original operator's manual and
assembly instructions" as well as the additional operator's manual and the order-
related documents completely before putting the pump into operation. Keep all
documents required for safe operation close to the pump installation site.
If you have any questions or need further information regarding the use of Fristam
pumps in ATEX areas, please contact Fristam Pumpen.
All work relating to installation, operation and maintenance described in the
assembly instructions may only be carried out by professionally qualified personnel
in compliance with the appropriate safety precautions.
When doing so, the relevant national regulations of the country of operation, as well
as the work and safety regulations of the company must be complied with.
Danger of contamination
When using the pump to pump hazardous substances, comply with the
legal and operational safety regulations.

8
Personal injury and environmental risks
- It is essential to comply with the safety instructions described in the
"Original operator's manual and assembly instructions" as well as
the additional operator's manual.
- Failure to observe the safety instructions may result in the loss of
claims for defects.
3.1 Working range
Pumps that are not built in accordance with ATEX and are not marked accordingly on
the rating plate and do not have a Fristam declaration of conformity must not be used
in explosive atmospheres.
The operating company must take all necessary safety measures in accordance with
Directives 99/92/EC (ATEX137) and 2014/34/EU to prevent explosions. This includes
determining the danger zone in accordance with ATEX137 and selecting suitable work
equipment (device), so that the pump/unit can be designed in accordance with ATEX
by Fristam on the basis of the application criteria. He must also ensure that the
surface temperature of the pump/unit does not exceed the maximum value of the
specified temperature class (see Classification and marking).
The pumps and pump units must never be operated outside the
operating limits specified in the operator's manuals and order-related
documents without the written consent of the manufacturer.
Explosive atmospheres are installation environments in which an explosive
atmosphere in dangerous concentrations can occur due to local and operational
conditions. Since Fristam pumps and pump units are classified as equipment group
II and category 2 or 3 according to ATEX, they may only be used in explosive
atmospheres of zones 1, 21, 2 and 22 (see order-related documents, observe the
respective marking of the pump).
If a device is marked with both G and D on the rating plate, this means that the
device may be used either in potentially explosive gas atmospheres or in potentially
explosive dust atmospheres.
However, use in potentially mixed explosive atmospheres (Gas-Ex + Dust-Ex) is not
possible with this approval.
Pumps that are approved for an occasional occurrence of an explosive gas
atmosphere in the pump interior (Zone1, Zone 2; Ex-Inside) must be clearly defined
as such in the order-related documentation or in the additional ATEX operator's
manual. In addition to the ATEX marking, these pumps are marked with an "X" on
the rating plate. This "X" means that important additional conditions for safe use
must be observed and adhered to. These additional conditions are explained in the
order-related documents and in the additional ATEX operator's manual.
If no "X" is indicated on the rating plate, this means that no explosive atmosphere
may be created inside the pump.
Pumps marked without "X" are only permitted for explosive atmospheres outside the
pump.

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Danger of explosion due to explosive atmosphere inside the
pumps!
- Pumps with simple mechanical seals or magnetic couplings are
never approved for an inside explosive gas atmosphere!!
Danger of explosion due to zone entrainment!
- The formation of a potentially explosive mixture within a pump
which is not suitable for use and is not marked accordingly (no
"X" on the rating plate and no unambiguous information in the
order-related documents) is not permitted.
- The operating company is responsible for a clear zone
assignment according to Directive 99/92/EC with indication of the
gas or dust group according to DIN EN ISO 80079-36.
The following subdivision of the hazard zones must be distinguished:
Zone 1
Zone 21
Areas in which a hazardous explosive atmosphere consisting of
gas, vapor, mist and mixtures thereof with air and/or dust and
mixtures thereof with air is likely to occur occasionally.
Zone 2
Zone 22
Areas in which it is to be expected that a hazardous explosive
atmosphere consisting of gas, vapor, mist and mixtures thereof
with air and/or dust and mixtures thereof will occur infrequently
and for short periods.
3.1.1 Ambient conditions at the place of installation
The ambient temperature must be within the range of -20 °C to +40 °C at the
installation site of the Fristam pump or unit.
The maximum permissible relative humidity and the maximum installation altitude
can be found in the manufacturer's documentation for the drive.
Danger of explosion due to dust deposits!
- Dust deposits on the outer surfaces of the pump unit as well as dust
settling behind the enclosures in lantern compartments and on
connecting components must be strictly prevented.
- Accumulated dust layers may not exceed the limit value of the
maximum layer thickness of 5 mm.
- Dedusting work must be included in the cleaning and maintenance
cycle.
3.1.2 Pumping medium
In addition to the intended use described in the "Original operator's manual",
flammable liquids or liquids with flammable components can also be pumped in the
ATEX area.

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Danger of explosion!
- The continuous/frequent pumping of explosive medium/air
mixtures is not permitted (zone 0 inside, zone 0 outside).
- The occasional occurrence of explosive gas atmospheres within
the pump is only permitted for certain pumps under certain
operating conditions with corresponding configurations. These
pumps are marked accordingly as in section 4.
- The pumping of heavily gas-laden media is not permitted for
pumps with single seals.
- Only liquids with high conductivity (> 1000 pS/m) may be
pumped.
- The pumping medium must not show any exothermic chemical
reaction.
- Exceeding the permissible density or viscosity is not permissible
(see order-related documents).
- Foreign objects in the pumping medium are not permitted.
- Abrasive pumping media are only permitted after consultation and
examination by Fristam.
3.1.3 Temperature operating limits
The maximum permissible surface temperatures on all external contours of the pump
unit may never be exceeded at full load in continuous operation.
Danger of explosion due to temperature operating limits being
exceeded!
- The maximum pumping media temperature can be found in the
order-related documents and may not be exceeded without
written confirmation from the manufacturer.
- The temperature limits apply under consideration of the ambient
conditions at the installation site.
- Fristam pump units may not be used for temperature classes
T5(100 °C) and T6(85 °C) in explosive atmospheres in installation
areas.
- In the case of a pump version with heating jacket, the operating
company is responsible for compliance with the prescribed Atex
temperature class and the permissible heating medium
temperature.
- Suitability of the pump for SIP processes only after consultation
with Fristam. SIP process only when the pump is switched off.
The pump casing adopts the sterilization temperature of the
process. The Atex temperature limit values must be complied
with.
- The pumping medium, barrier medium and medium for heat
transfer in the heating jacket may not fall below the temperature
of -20 °C.

11
- If the operating company cannot guarantee that the pumping
media temperature or the surface temperature is within the
permissible temperatures, it must provide a monitoring system.
Monitoring parameters: Pumping media temperature or
surface temperature
The surface temperature depends on the operating conditions, the
ambient temperature and the temperature of the flow medium.
The specification of the Atex temperature class on the rating plates, in
the order-related documents and in the following tables "Temperature
limits of the pump types" must be checked and compared. If the values
differ, the lower value must be complied with as the maximum
permissible pumping media temperature.
In case of doubt or for further information, please contact Fristam
Pumpen.
The following tables show the individual pump types. These specify the maximum
permissible temperature of the pumping medium in relation to the temperature class
in the installation area in accordance with DIN EN ISO 80079-36.
3.1.3.1 Temperature limits of pump types FP / FPE / FP…V / FPH / FPEH / FPH…V /
FSPE / FSP…V
Depending on the constructive design, different maximum pumping media
temperatures are permissible for pumps of the FP series.
If the pumping media temperatures are not specified in the documentation, the
lower value is permissible.
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 150
T2
300
≤ 150
T3
200
≤ 150
T4
135
≤ 100
Table 1: Max. permissible pumping media temperature in [°C] for FP/FPE/FP…V/FPH/FPEH/
FPH…V/FSPE/FSP…V
Temperature limit of pump type FP/FSP (Ex-Inside) Zones 1 & 2
FP/FSP pumps in which an occasional occurrence of explosive gas
atmospheres within the pump is permissible (category 2; IIB; EPL Gb /
Gc; additional marking on rating plate X), the following must be
observed:
- Explosive atmospheres within the pump with the temperature
class assignment T4, T5 and T6 are not permitted.
- The max. permissible pumping media temperature for the EPL Gc
/ Gb T1-T3 is TPumping medium ≤ 100 °C.

12
3.1.3.2 Temperature limits of pump type FC
Depending on the design, different maximum pumping media temperatures are
permissible for pumps of the FC series.
If the pumping media temperatures are not specified in the documentation, the
lower value is permissible.
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 90/110
T2
300
≤ 90/110
T3
200
≤ 90/110
T4
135
≤ 80/80
Table 2: Max. permissible pumping media temperatures in [°C] for pump type FC
3.1.3.3 Temperature limits of pump type FPC
Depending on the design, different maximum pumping media temperatures are
permissible for pumps of the FC series.
If the pumping media temperatures are not specified in the documentation, the
lower value is permissible.
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 150
T2
300
≤ 150
T3
200
≤ 150
T4
135
≤ 100
Table 3: Max. permissible pumping media temperature in [°C] for FPC
Temperature limit of pump type FPC (Ex-Inside) Zones 1 & 2
FPC pumps in which an occasional occurrence of explosive gas
atmospheres within the pump is permissible (category 2; IIB; EPL Gb /
Gc; additional marking on rating plate X), the following must be
observed:
- Explosive atmospheres within the pump with the temperature
class assignment T4, T5 and T6 are not permitted.
- The max. permissible pumping media temperature for the EPL
Gb / Gc; T1-T3 is TPumping medium ≤ 100 °C.

13
3.1.3.4 Temperature limits of pump type FZ
Depending on the design, different maximum pumping media temperatures are
permissible for pumps of the FZ series.
If the pumping media temperatures are not specified in the documentation, the
lower value is permissible.
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 150
T2
300
≤ 150
T3
200
≤ 150
T4
135
≤ 100
Table 4: Max. permissible pumping media temperature in [°C] for FZ
Temperature limit of pump type FZ (Ex-Inside) Zones 1 & 2
FZ pumps in which an occasional occurrence of explosive gas
atmospheres within the pump is permissible (category 2; IIB; EPL Gb /
Gc; additional marking on rating plate X), the following must be
observed:
- Explosive atmospheres within the pump with the temperature
class assignment T4, T5 and T6 are not permitted.
- The max. permissible pumping media temperature for the EPL
Gb / Gc T1-T3 is TPumping medium ≤ 100 °C.
3.1.3.5 Temperature limits of pump types FPM/FSM/FZM
The temperature increase compared to the medium temperature on liquid-
lubricated magnetic couplings during normal operation depends on the medium
flow or pressure difference of the circulation as well as the physical thermal values
of the pumping medium.
For the maximum permissible pumping media temperature, the marking on the
rating plate and the "Design data sheet for the magnetic coupling" in the enclosed
documents must be observed.
FPM/FSM/FZM pumps
- A complete filling of the magnetic coupling and the pump with
medium is strictly necessary.
- Short-term dry running, e.g., at the start, is only permitted after
examination and written confirmation by Fristam.
- Dry running is not permitted at speeds above 1500 rpm!
Temperature limits of pump types FPM/FSM/FZM
Compliance with the temperature class or the maximum permissible
surface temperature during normal operation is ensured by a measuring
point on the containment shell. The containment shell temperature may

14
not exceed the permissible temperature class.
TContainment shell ≤ Tx*
*Temperature classes T1-T4 (minus 5 °C for T3-T4 and minus 10 °C for
T1-T2 according to DIN EN ISO 80079-36)
TContainment shell = TPumping medium + 35 °C
A connection thread G1/4" for the installation of a temperature
monitoring device for the surface of the containment shell is available.
A PT100 resistance thermometer with spring-loaded tip can be used
reliably to monitor temperature excesses in the containment shell area
when the pump is full. However, a resistance thermometer is not
suitable as dry-running protection.
In case of uncertainty or for more information, please contact Fristam
Pumpen.
3.1.3.6 Temperature limits of pump type FK
Depending on the constructive design (*temperature displacer), different max.
pumping media temperatures are permissible for pumps of the FK series:
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 90/150*
T2
300
≤ 90/150*
T3
200
≤ 90/150*
T4
135
≤ 90/100*
Table 5: Max. permissible pumping media temperatures in [°C] for pump type FK
3.1.3.7 Temperature limits of pump type FL
Depending on the constructive design (*temperature displacer), different max.
pumping media temperatures are permissible for pumps of the FL series:
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 90/150*
T2
300
≤ 90/150*
T3
200
≤ 90/150*
T4
135
≤ 90/100*
Table 6: Max. permissible pumping media temperatures in [°C] for pump type FL

15
Temperature limit of pump type FL (Ex-Inside) Zones 1 & 2
FL pumps for which an occasional occurrence of explosive gas
atmospheres within the pump is permissible (category 2; IIB; EPL Gb /
Gc; additional marking on rating plate X), the following must be
observed:
- Explosive atmospheres within the pump with the temperature
class assignment T4, T5 and T6 are not permitted.
- The max. permissible pumping media temperature for the EPL
Gb / Gc T1-T3 is TPumping medium ≤ 100 °C.
3.1.3.8 Temperature limits of pump type FKL
Depending on the constructive design (*temperature displacer), different max.
pumping media temperatures are permissible for pumps of the FKL series:
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 95/135*
T2
300
≤ 95/135*
T3
200
≤ 95/135*
T4
135
≤ 95/100*
Table 7: Max. permissible pumping media temperatures in [°C] for pump type FKL
3.1.3.9 Temperature limits of pump type FDS
Temperature class;
Temperature limit
value
Max. permissible
surface temperature [°C]
Max. permissible
pumping media
temperature [°C]
T1
450
≤ 150
T2
300
≤ 150
T3
200
≤ 150
T4
135
≤ 100
Table 8: Max. permissible pumping media temperature in [°C] for FDS
Temperature limit of pump type FDS (Ex-Inside) Zones 1 & 2
FDS pumps for which an occasional occurrence of explosive gas
atmospheres within the pump is permissible (category 2; IIB; EPL Gb /
Gc; additional marking on rating plate X), the following must be
observed:
- Explosive atmospheres within the pump with the temperature
class assignment T4, T5 and T6 are not permitted.
- The max. permissible pumping media temperature for the EPL
Gb / Gc T1-T3 is TPumping medium ≤ 100 °C.

16
3.2 Assembly, modifications and changes
The assembly of devices and components may not constitute a new ignition source.
The device or component with the lowest ignition protection determines the degree of
protection of the entire unit.
Danger of injury and damage to machinery!
- Any constructive revisions or modifications to the pump/pump unit
not authorized by Fristam Pumpen as well as modifications to the
operating mode that impair safety are not permitted and will result
in the loss of warranty claims.
- If modifications are necessary, consultation with Fristam Pumpen is
required.
Danger of explosion due to modification!
An inspection must be carried out after any modifications have been
made to the pump/unit. If the modification affects one or more health-
and safety-related characteristics (e.g., temperature) covered by the
"Essential health and safety requirements" or the integrity of a type of
ignition protection, Directive 2014/34/EU must be applied.
3.2.1 Coatings
Painted pump components are painted to DIN EN ISO 80079-36 with a layer
thickness <2 mm and suitable for use in ignition protection groups IIA and IIB.
Danger of explosion due to brush and propagating brush
discharges!
Overpainting the parts of the pump unit could lead to the maximum
permissible layer thicknesses being exceeded.
3.3 Motor
When used in explosive atmospheres, Fristam pumps must only be driven by suitable
electric motors which are designed for the respective pump and have the required
degree of explosion protection.
Danger of explosion!
- Only cable glands with ATEX approval must be used.
- All work must be carried out exclusively by qualified and authorized
personnel.
- Regional work and safety regulations must be observed.
- The permissible frequency range may not be undercut or exceeded.
- The information in the manufacturer's documentation for correct use
and mode of operation, e.g., switching frequency, must be
observed.

17
3.4 Coupling
Only a suitable coupling designed for the respective pump unit and suitable for use in
the ATEX area may be used for an ATEX pump unit.
Danger of explosion!
- Only use couplings suitable for operation in ATEX areas.
- The information in the manufacturer's documentation for correct use
and mode of operation must be observed.
4 Classification and marking
Please refer to the rating plate on the machine for the classification of the
pump/pump unit. The information on the rating plate and the designations according
to DIN EN ISO 80079-36 are explained below.
- There may be further signs on the pump unit.
- Under no circumstances may nameplates be removed from the
pump, electric motor or other components of the pump unit.
4.1 Rating plate
For the ATEX area, the rating plate is Fig. 1labeled with the following information in
addition to the rating plate entry described under section "Rating plate" of the
respective "Additional operator's manual and assembly instructions":
11
15
12
16
13
14
Fig. 1: Rating plate
11 Pictogram of the pump without drive
12 Pictogram of the pump unit
13 The Ex mark indicates that the product is explosion-proof
14 Ex-deposit and registration office –no. of the ATEX documents
15 Ex-protection data for the pump without drive
16 Ex-protection data for the pump unit

18
4.2 FDS rating plate
For the ATEX area, the nameplate is labeled according to Fig. 2 with the following
information in addition to the nameplate entry described under section "Rating plate"
of the respective "Additional operator's manual and assembly instructions":
11
15
12
16
13
14
Fig. 2: Rating plate
11 Pump without drive
12 Pump unit
13 The Ex mark indicates that the product is explosion-proof
14 Ex-deposit and registration office –no. of the ATEX documents
15 Ex-protection data for the pump without drive
16 Ex-protection data for the pump unit
4.3 Marking according to Directives 2014/34/EU and DIN EN ISO 80079-36
In compliance with the order-related Fristam declaration of conformity
according to ATEX, the rating plate entries in fields 15 and 16 as per
Fig. 1 and Fig. 2 for the pumps without drive or pump unit must be
interpreted as follows:

19
Symbol
Designation
Meaning
CE marking
Manufacturer's confirmation that the product complies with the product-specific
European directives in force
Ex-symbol
Explosion protection markings for equipment and protective systems intended
for use in explosive atmospheres, in accordance with Directive 2014/34/EU
II
Equipment group
Equipment group "II" /Equipment for use in explosive atmospheres outside the
mining industry above ground
2
3
Category
For use in zone 1 (gas) and zone 21 (dust)
For use in zone 2 (gas) and zone 22 (dust)
G
D
Explosive atmosphere
Atmosphere gas "G"/Ex-atmosphere of gas/air
Atmosphere gas "D"/Ex-atmosphere of dust/air
Ex
Standard
Explosion protection standard DIN EN ISO 80079-36; -37
h
c
k
(b1)
Ignition protection type
Non-electrical devices that meet the requirements of the DIN EN ISO 80079-37
standard must be marked with "h" in accordance with ISO 80079-36 in addition
to those of ISO 80079-36, i.e., with regard to the degree of protection applied
without additional marking.
"c" protection class "Constructional safety"
"k" protection class "Liquid encapsulation"
"(b1)" Control of ignition sources
IIA
IIB
IIC
Gas explosion group
Group II equipment is classified according to the type of explosive gas
atmosphere for which it is intended.
IIA, a typical gas is propane;
IIB, a typical gas is ethylene;
IIC, a typical gas is hydrogen.
IIIA
IIIB
IIIC
Dust explosion group
Group II equipment is classified according to the type of explosive dust
atmosphere for which it is intended.
IIIA: suitable for flammable suspended solids;
IIIB: suitable for flammable suspended solids and non-conductive dust;
IIIC: suitable for flammable suspended particles and non-conductive dust and
conductive dust.
T1 –T6
Temperature class
Temperature class
Maximum permissible surface temperature
T1
T2
T3
T4
T5
T6
450 °C
300 °C
200 °C
135 °C
100 °C
85 °C
T 135 °C
Temperature limit value
In the case of an explosive dust atmosphere, the maximum permissible surface
temperature is specified as "D" as the temperature limit value in "°C".
TX
Temperature
class/Temperature limit
value
The maximum surface temperature mainly depends on the operating
conditions and not on the pump, i.e. on the pumping media temperature.
Ga / Da
Gb / Db
Gc / Dc
Equipment protection
level
Equipment protection level (EPL= Equipment Protection Level) according to
DIN EN ISO 80079-36
X
Additional marking: Important conditions for safe use must be observed and adhered to (see order-related
documents in addition to the additional operator's manual).
Table 9: Designation legend according to Directives 2014/34/EU and DIN EN ISO 80079-36

20
4.3.1 Marking example for pump and pump unit according to ATEX
Example: II2G Ex h IIB TX Gb
Marking for a pump: (Field 15 on the rating plate)
1
2
3
4
5
6
7
8
II
2
G
Ex
h
IIB
TX
Gb
Marking
according to
ATEX
Marking according to
standard DIN EN ISO 80079-
36
Symbol
Name/Meaning
1
II
Group II equipment
2
2
Category 2
3
G
Gas EX-atmosphere
4
Ex
Standard DIN EN ISO 80079-36
5
h
Standard DIN EN ISO 80079-36
6
IIB
Medium explosion group, typical gas ethylene
7
TX
Max. surface temperature depends on the operating conditions, i.e. on the
pumping media temperatureTemperature limit of the pump order-related
documents and section 3.1.3 Temperature limits.
8
Gb
EPL Gb means a "high" protection level at which there is no danger of ignition
during normal operation or foreseeable faults/malfunctions (Zone 1).
Example 2: II2G IIB T4 Gb
Marking for a pump unit (pump+motor/gearbox, coupling): (lower Ex-line; field 16 on the
rating plate)
Pump: (upper Ex-line; field 15 on the rating
plate)
Electric motor: (electric motor rating plate)
II2G Ex h IIB T4 Gb
II2G Ex de IIC T4 Gb
- Pump units according to ATEX are marked with one marking for the
pump and another for the entire assembly.
- If an X is marked on the type plate, this means that special
conditions for the operation of the device in the ATEX area must be
observed. These conditions are explained in the order-related
documents. Example: Pumps that are approved for a zone
according to ATEX within the device are marked with an X on the
rating plate.