ProMinent Makro TZ User manual

Diaphragm metering pump
Makro TZ, TZMb
Operating instructions
P_MA_0022_SW
EN
Original operating instructions (2006/42/EC)Part No. 985741 BA MA 021 01/20 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
correct operation of the unit or is intended to make
your work easier.
Safety Information
Safety information is identified by pictograms - see Safety Chapter.
Refer to the precise designation of suppliers' components in the
"Technical Data" chapter for ease of finding the relevant informa‐
tion.
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 unit type and material versions to be clearly identified.
The nameplate stuck on the cover page is identical to the pump
supplied so that there is a clear link between the operating instruc‐
tions and the pump.
Supplementary information
Fig. 1: Please read!
Information in supplier instructions
Validity
State the identity code and serial
number
EX pumps only
Supplemental directives
2

Table of contents
1 Identity code.......................................................................... 5
2 Safety chapter....................................................................... 7
2.1 Safety information for ATEX designs.......................... 14
2.2 Explanation of the ATEX label.................................... 24
3 Storage, transport and unpacking....................................... 27
4 Overview of equipment, control elements........................... 28
5Functional description......................................................... 30
6 Assembly............................................................................ 31
7 Installation........................................................................... 34
7.1 Installation, hydraulic.................................................. 34
7.2 Basic installation notes............................................... 37
7.3 Installation, electrical.................................................. 39
8 Start up and operation........................................................ 46
8.1 Bleeding the liquid end............................................... 49
8.2 Calibrate the stroke control drive (optional)................ 50
9 Maintenance....................................................................... 51
10 Repairs................................................................................ 57
10.1 Replacing the diaphragm.......................................... 58
10.2 Repairing the diaphragm rupture sensor.................. 61
10.3 Valve repair............................................................... 64
10.3.1 Double ball valves.................................................. 64
10.3.2 Plate valves........................................................... 65
10.4 Replacing power end bearings................................. 66
11 Troubleshooting.................................................................. 67
12 Decommissioning and disposal.......................................... 70
12.1 Decommissioning..................................................... 70
12.2 Disposal.................................................................... 72
13 Technical data..................................................................... 73
13.1 Performance data..................................................... 73
13.2 Precision................................................................... 74
13.2.1 Reproducibility....................................................... 74
13.2.2 Dosing precision.................................................... 75
13.3 Viscosity.................................................................... 75
13.4 Wetted materials....................................................... 75
13.5 Ambient conditions................................................... 76
13.5.1 Temperatures........................................................ 76
13.5.2 Air humidity............................................................ 77
13.6 Housing degree of protection.................................... 77
13.7 Installation height...................................................... 78
13.8 Motor data................................................................. 78
13.9 Stroke sensor (optional), intrinsically safe................ 79
13.10 Diaphragm rupture sensor...................................... 79
13.11 Filling volumes........................................................ 81
13.11.1 Gear oil................................................................ 81
13.12 Sound pressure level.............................................. 81
13.13 Supplement for modified versions.......................... 81
14 Dimensional drawings......................................................... 82
Table of contents
3

15 Motordatenblatt................................................................... 85
16 Earthing/equipotential bonding drawings for TZMb............ 86
17 Diagrams for adjusting the capacity.................................... 87
18 Spare parts......................................................................... 91
18.1 Spare parts............................................................... 91
18.2 Other material........................................................... 92
18.2.1 Gear oil.................................................................. 92
19 Declaration of Conformity for Machinery............................. 93
20 Declaration of Incorporation................................................ 94
21 ATEX Declaration of Conformity......................................... 95
22 ATEX Declaration of Incorporation..................................... 97
Table of contents
4

1 Identity code
TZMb Makro TZ diaphragm metering pump
Power end type
H Main power end
D Main power end, doubled
A Add-on power end
B Add-on power end, doubled
Type
_ _ _ _
_
Performance data at maximum back pressure and type: refer to nameplate on the
pump housing
Dosing head material
PC PVC
PP Polypropylene
TT PTFE + 25% carbon
SS Stainless steel
Material of seals / diaphragm
T PTFE
Displacement body material
1 Multi-layer safety diaphragm with rupture signalling
Dosing head design
0 without valve spring
1 with valve spring
Hydraulic connector
0 Standard connection
1 Union nut and PVC insert
2 Union nut and PP insert
3 Union nut and PVDF insert
4 Union nut and SS insert
Design
0with ProMinent® logo, no frame
2without ProMinent® logo
Awith ProMinent® logo, with single frame
Bwith ProMinent® logo, with double frame
Cwith ProMinent® logo, with triple frame
Mmodified* * order-specific design, see order
paperwork for pump features
Electric power supply
S 3-phase, 230 V/400 V 50/60 Hz (WBS)
R 4-pin speed stroke control motor, 230/400 V
Identity code
5

TZMb Makro TZ diaphragm metering pump
V(0) Variable speed stroke control motor with inte‐
grated frequency converter
Z Speed control complete
L 3-phase, 230 V/400 V, 50 Hz, (Exe, Exd)
P 3-phase, 230 V/400 V 60 Hz (Exe, Exd)
V(2) Variable speed stroke control motor with inte‐
grated frequency converter (Exd)
4 without motor, with flange 56 C
7 without motor, with flange 120/80
8 without motor, with flange 160/90
0 without motor, add-on power end
Degree of protection
0 IP 55 (standard) ISO class F
1 Exe design ATEX-T3 *
2 Exd design ATEX-T4 *
A ATEX design of power end *
Stroke sensor
0 without stroke sensor
1 Stroke sensor (Namur), intrinsically safe
Stroke length adjustment
0 Stroke length adjustment, manual
1 Actuator 230 V
2 Actuator 115 V
3 Control drive 230 V 0-20 mA
4 Control drive 230 V 4-20 mA
5 Control drive 115 V 0-20 mA
6 Control drive 115 V 4-20 mA
Applications
0 standard
* ATEX specification - refer to the nameplate on the pump, corre‐
sponding EU Declaration of Conformity for ATEX Machinery and
Ä Chapter 2.2 ‘Explanation of the ATEX label’ on page 24
Identity code
6

2 Safety chapter
The following signal words are used in these operating instructions
to denote different severities of danger:
Signal word Meaning
WARNING Denotes a possibly dangerous
situation. If this is disregarded,
you are in a life-threatening sit‐
uation and this can result in
serious injuries.
CAUTION Denotes a possibly dangerous
situation. If this is disregarded,
it could result in slight or minor
injuries or material damage.
The following warning signs are used in these operating instruc‐
tions to denote different types of danger:
Warning signs Type of danger
Warning – hand injuries.
Warning – high-voltage.
Warning – hot surface.
Warning – danger zone.
nOnly use the pump to meter liquid feed chemicals.
nThe pump is only approved for flammable feed chemicals if the
operator takes appropriate safety measures.
nThe pump may only be started up after 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,
chemical resistance and density - see also the ProMinent
Resistance List (in the Product Catalogue or at www.promi‐
nent.com)!
nAll other uses or modifications are prohibited.
nThe pump is not intended for the metering of gaseous media
and solids.
nThe pump is not intended for metering abrasive media.
nThe pump is not intended for the metering of explosive sub‐
stances and explosive mixtures.
nThe pump is not intended for unprotected use outdoors.
nThe pump is only intended for industrial use.
Identification of safety notes
Warning signs denoting different
types of danger
Intended use
Safety chapter
7

nOnly allow trained and authorised personnel to operate the
pump - see the following table.
nOther people may only access the pump if they have been
informed about the dangers.
nYou have a responsibility to adhere to the information con‐
tained 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
information for ATEX designs’ on page 14 .
Task Qualification
Storage, transport, unpacking Instructed person
Assembly Technical personnel, service
Planning the hydraulic installa‐
tion
Qualified personnel who have a
thorough knowledge of oscil‐
lating metering 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
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 haz‐
ards based on his training, knowledge and experience, as well as
knowledge of pertinent regulations. A trained, qualified employee
must be able to perform the tasks assigned to him/her independ‐
ently 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 relevant field.
Electrical technician
An electrical technician is able to complete work on electrical sys‐
tems and recognise and avoid possible dangers independently
based on his technical training and experience as well as knowl‐
edge of pertinent standards and regulations. An electrical techni‐
cian must be able to perform the tasks assigned to him/her inde‐
pendently with the assistance of drawing documentation, parts
lists, terminal and circuit diagrams. The electrical technician must
be specifically trained for the working environment in which the
electrical technician is employed and be conversant with the rele‐
vant standards and regulations.
Electrical technician with knowledge of ATEX explosion protection
Qualification of personnel
Safety chapter
8

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 explo‐
sion protection qualification can work on electrical systems and
independently recognise and avoid possible dangers based on his
technical training and experience.
The electrical technician with an additional explosion protection
qualification is familiar with all the standards and regulations appli‐
cable to explosion protection, in particular, but not exclusively, with
all parts of EN 60079 [Electrical equipment for areas at risk of a
gas explosion].
An electrical technician with an additional explosion protection
qualification must comply with the provisions of the applicable stat‐
utory 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 experi‐
ence 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 per‐
form tests on repaired devices/parts. They must be recognised by
the responsible authorities (e.g., district council) in this respect.
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 dangers 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 author‐
ised distribution partner.
Service
Service refers to service technicians, who have received proven
training and have been authorised by ProMinent or ProMaqua to
work on the system.
Safety chapter
9

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 responsi‐
bility as an operator and is intended only to remind
him or make him aware of specific problem areas.
This information does not lay claim to being com‐
plete, nor applicable to every country and every
type of application, nor to being unconditionally up-
to-date.
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.
WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious inju‐
ries.
Please ensure when handling hazardous sub‐
stances that you have read the latest safety data
sheets provided by the manufacture of the haz‐
ardous substance. The actions required are
described in the safety data sheet. Check the
safety data sheet regularly and replace, if neces‐
sary, 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 worksta‐
tions affected.
WARNING!
Only with flammable feed chemicals Danger of
explosion with isolating feed chemicals
A flammable feed chemical with a low electrical
conductivity (< 50 pS/m) can form explosive
vapours with air in the liquid end and statically
charge the diaphragm.
– It is essential that you avoid the liquid end run‐
ning dry.
Safety information
Safety chapter
10

WARNING!
Risk of burns with hot feed chemicals
If hot feed chemicals can heat the liquid ends
above the permissible surface temperatures, per‐
sons can suffer burns from them.
– Consider attaching a "Hot surface" label to the
liquid end or ...
– fitting a guard plate.
WARNING!
Hot surface
In event the power end motor is loaded exces‐
sively, its surface may become very hot.
– Avoid contact.
– If necessary, mount a guard plate.
CAUTION!
Warning of feed chemical spraying around
Feed chemical can spray out of the hydraulic com‐
ponents 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 chem‐
ical.
– Take into account the resistance of the wetted
materials and the ProMinent Resistance List
when selecting the feed chemical - see the
ProMinent Product Catalogue or visit ProMi‐
nent.
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 instruc‐
tions.
It may only be opened in other positions upon
receipt of written authorisation from the ProMinent
head office, Heidelberg.
Safety chapter
11

CAUTION!
Danger of personnel injury and material damage
The use of untested third party parts can result in
personnel injuries and material damage.
– Only fit parts to metering pumps, which have
been tested and recommended by ProMinent.
CAUTION!
Danger from incorrectly operated or inadequately
maintained 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
responsibility 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 pro‐
tection, and taking into consideration the actual operating environ‐
ment 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).
Information in the event of an emer‐
gency
Safety information for operating
instructions
Safety chapter
12

1
2
3
4
P_MA_0042_SW
Fig. 2: Isolating protective equipment for Makro TZ with add-on
power end (shown here for plunger design)
1 Motor terminal box cover
2 Protective cowling over the motor fan
3 Flange cover, side
4 Protective cover (diaphragm and plunger design only)
Po
s.
Protective equipment May only be
removed by*:
1 Motor terminal box cover Electrical tech‐
nician, Service
2 Protective cowling over the motor fan Service
3 Flange cover, side Service
4 Protective cover (diaphragm and plunger
design only)
Technical per‐
sonnel,
Service
- Only with additional equipment: Their cor‐
responding parts
Technical per‐
sonnel,
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 an EC Declaration of Conformity
nAdapt the operating instructions, if necessary
nInstall the motor correctly
Safety equipment
Protective equipment
Requirements if the motor is being
installed independently
Safety chapter
13

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).
3. As you have converted an "incomplete machine" into a com‐
plete machine, you must perform a conformity assessment,
risk assessment, create a Declaration of Conformity, fit a
company nameplate, ... .
4. Complete the pump documentation / operating instructions.
Sound pressure level LpA < 75 dB in accordance with EN ISO
20361:2010-10
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
information is listed again at the relevant points in these operating
instructions.
This safety information is supplementary to or replaces the safety
information for non-ATEX designs. If the safety information for
ATEX designs contradicts 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.
nThe pump is not intended for metering flammable fluids in
areas at risk from explosion.
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 or ultrasound or lightning
without putting in place measures in line with EN 80079-38.
nDo not use the ATEX design to meter media, which have a ten‐
dency to produce an exothermic reaction or self-ignite without
measures in accordance with EN 80079-38.
Task Qualification
Planning the hydraulic installa‐
tion
ATEX qualified person, ATEX
electrical technician
Electrical installation ATEX electrical technician
Start up Skilled ATEX technician;
Checking the electrical installa‐
tion: Recognised competent
person
Install the motor - with designs without
motor
Sound pressure level
Intended use
Qualification of personnel
Safety chapter
14

Task Qualification
Maintenance, repair ATEX qualified person, ATEX
electrical technician
Troubleshooting Qualified ATEX technician or
ATEX electrical technician -
depending on the fault;
Checking the electrical installa‐
tion: 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 experi‐
ence 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 per‐
form 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 quali‐
fication should be specifically trained for the work area in which he
is employed and be familiar with the relevant standards and regula‐
tions. The skilled technician with an additional explosion protection
qualification can work on equipment and systems in areas pro‐
tected from explosion and independently recognise and avoid pos‐
sible dangers based on his technical training and experience.
The skilled technician with an additional explosion protection quali‐
fication is familiar with all the standards and regulations applicable
to explosion protection.
The skilled technician with an additional explosion protection quali‐
fication 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 explo‐
sion protection qualification can work on electrical systems and
independently recognise and avoid possible dangers based on his
technical training and experience.
The electrical technician with an additional explosion protection
qualification is familiar with all the standards and regulations appli‐
cable to explosion protection.
An electrical technician with an additional explosion protection
qualification must comply with the provisions of the applicable stat‐
utory directives on accident prevention.
Safety chapter
15

Ignition hazard Protective measures to be observed by the cus‐
tomer
Excessive surface pressure Limitation of the maximum temperature of the feed
chemical
Pump running hot The customer must monitor and maintain the pump
in accordance with the “Maintenance” chapter.
The customer must monitor the capacity.
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.
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 measures in accord‐
ance with EN 1127-1, if necessary.
Static electricity The customer must earth the earthing points and
maintain the potential equalisation cables of the indi‐
vidual components.
The customer must pay attention to potential equali‐
sation when dismantling.
Paint should not be applied too thickly.
Dosing heads made of electrically non-conductive
materials must not be used.
The customer must wire the diaphragm rupture indi‐
cator in such a way that it immediately stops the
pump.
Electromagnetic waves (also lasers), ionising radia‐
tion and ultrasound have an impact on the pump
The customer must put in place measures in accord‐
ance with EN 1127-1, if necessary.
Adiabatic compression and shock waves Non-conductive feed chemicals: Do not allow the
unit to run dry – even when filling and emptying the
liquid end.
Deposits of dust Regularly clean the outside of the pump with a damp
cloth.
Flammable feed chemicals The pump must only be allowed to meter flammable
feed chemicals with electrically well-conducting
dosing heads.
Make sure that the diaphragm rupture indicator
stops the pump immediately in the event of a dia‐
phragm rupture.
Summary of relevant ignition hazards
and protective measures put in place
for the Makro TZ in accordance with
EN ISO 80079-36
Safety chapter
16

Ignition hazard Protective measures to be observed by the cus‐
tomer
Ignition hazard with bought-in motor components Refer to the documentation for the motor.
Comply with the monitoring intervals.
The insulation resistance must be greater than 5
MOhm.
Provide a time-delay residual current device.
Provide overload protection by means of a motor
protection 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 with bought-in BoWex coupling Refer to the documentation for the coupling (mainte‐
nance, alignment, if necessary, ...).
Ignition hazard caused by bought-in proximity switch
NJ1.5-8GM-N (stroke sensor)
Refer to the documentation for the proximity switch
(electrical installation, ...).
WARNING!
ATEX pumps in areas at risk from explosion
– The operator must observe the Operator Direc‐
tive when operating equipment in areas at risk
of explosion.
– 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 guaran‐
teed, 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 over‐
loading or impact sparks caused by the
breakage of power end parts).
Safety information
Safety chapter
17

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 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.
– Do not allow it to run dry. Take appropriate pro‐
tective measures.
– Immediately switch off the pump in the event of
a diaphragm rupture.
WARNING!
ATEX pumps in areas at risk from explosion
If feed chemicals are metered, which tend to pro‐
duce exothermic reactions or self-ignite, they can
lead to high temperatures and ignition.
– Put in place measures in accordance with EN
80079-38.
WARNING!
ATEX pumps in areas at risk from explosion
– Electrically connect the electrical units listed on
the earthing diagram in the appendix, cleanly
and permanently, 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 electri‐
cally clean potential equalisation point - e.g.,
with a potential equalisation bar on your
system.
–Note the enclosed documentation for the indi‐
vidual electrical components.
WARNING!
ATEX pumps in areas at risk from explosion
– Use a suitable motor protection switch to pro‐
tect power end motors. Use motor protection
approved for this application with Ex"e" motors.
(Protection against warming caused by over‐
loading)
– Provide a time-delay residual current device.
– Observe the enclosed operating instructions for
the Ex motor.
Safety chapter
18

WARNING!
The following applies in areas at risk from explo‐
sion:
– Note the details of the type examination certifi‐
cate 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 correctly.
– 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 nom‐
inal pressure of the pump.
Safety chapter
19

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 moni‐
toring 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
downstream of the pump. In premises at risk
from explosion, the relief valve should prevent
the gear from becoming overloaded and
becoming hot.
– Observe the enclosed operating instructions for
the Ex motor.
– When cleaning plastic components, ensure
that no electrostatic charges are generated by
excessive friction.
– 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 unaccept‐
able wear.
– Appropriate diagnostic equipment for bearing
damage is recommended for the premature
detection of bearing damage.
– Check whether the potential equalisation lines
are all sitting correctly with clean contacts. Use
the equipotential bonding drawings as an aid –
see Appendix.
– Check whether the earth lines are all sitting
correctly with clean contacts. Use the equipo‐
tential bonding drawings as an aid – see
Appendix.
– Only use genuine spare parts as replacements.
The entire installation supplied is provided ex works with the nec‐
essary potential equalisation lines.
Electrically connect an additional potential equalisation cable from
the potential equalisation cables from this system cleanly and per‐
manently to an electrically clean potential equalisation point, e.g.,
to a potential equalisation bar on site.
Measure the surface temperature at maximum load. Additional
information – refer to the operating instructions for the spur gears.
Check the pump installation for:
Potential equalisation line (required in
the area at risk from explosion)
Check the temperature of the spur
gears
Inspection, daily
Safety chapter
20