SPX Johnson Pump TopLobe TL1 User manual

INSTRUCTION MANUAL
ORIGINAL INSTRUCTIONS
READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
TopLobe
EXPLOSION PROTECTION ACCORDING TO ATEX (94/9/EC)
A.0501.251 – ATEX IM-TL/05.00 EN (12/2011)

Declaration of conformity
according to EC directive 94/9/EC (ATEX)
Manufacturer
SPX Flow Technology Sweden AB
P.O.Box 1436
SE-701 14 Örebro
Sweden
Declares hereby that
the following product families, if ordered as Atex pump or Atex pump unit, are
meeting the requirements set forth in EC directive 94/9/EC of 23 March 1994.
If the product is modified without our written permission, or if the safety
instructions in the instruction manuals are not being followed, this declaration
becomes invalid.
• Product families: TopLobe
• Notied body: SP Sveriges Provnings- och Forskningsinstitut
P.O. Box 857
SE-501 15 Borås
Sweden
• Tech. File Ref.: JP 03-13347-01/040416
• Standards: Applicable harmonised standards
EN 13463-1
EN 13463-5
• Marking: The marking includes the symbol and
the technical file reference.
Special conditions for safe use are specified in the
Ex-Instruction Manual.
Örebro, Sweden, 1 January 2010
Michael Strålman
Managing Director

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A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
Contents
Disclaimer ...........................................................................................................4
1.0 General .................................................................................................5
1.1 Symbol ..........................................................................................................5
1.2 Safety Information.......................................................................................5
1.3 Responsibility for ATEX certication – extend of delivery.................5
1.4 Marking .........................................................................................................6
1.5 ATEX type designation examples............................................................7
1.6 Temperature classes and allowable temperatures..............................7
1.6.1 II 2G allowable temperature......................................................7
1.6.2 II 2(G)D allowable temperature .................................................8
1.7 Responsibility ..............................................................................................8
1.8 Operation .....................................................................................................8
1.9 Monitoring ....................................................................................................9
1.10 Residual risks ..........................................................................................10
2.0 Performance...................................................................................... 11
3.0 Installation ......................................................................................... 12
3.1 Checks.......................................................................................................12
3.2 ATEX certification ....................................................................................12
3.3 Working environment.............................................................................. 12
3.4 Base plate .................................................................................................12
3.5 Drive, shaft coupling and protection guard .......................................12
3.6 Direction of rotation ................................................................................13
3.7 Piping .........................................................................................................13
3.8 Shaft sealing auxiliary connections......................................................13
3.9 Check alignment......................................................................................13
4.0 Commissioning ................................................................................ 14
4.1 General ......................................................................................................14
4.2 Precautions............................................................................................... 14
5.0 Maintenance ..................................................................................... 15
5.1 General ......................................................................................................15
5.2 Gearbox .....................................................................................................15
5.3 Shaft seals.................................................................................................15
5.3.1 Quench/Flushing (see IM) .......................................................15
6.0 Limiting risks by means of “check list” ....................................... 16
6.1 During installation....................................................................................16
6.2 Before starting the pump.......................................................................16
6.3 When starting the pump ........................................................................16
6.4 When the pump is running....................................................................17
6.5 When stopping the pump......................................................................17

4A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
TopLobe – Operating instructions concerning
explosion protection
Disclaimer
Considerable effort has been made to ensure that this manual is free of inaccuracies and
omissions. However, even though the manual contains up to date data at time of going to
press, due to constant improvements some of the data contained herein may not exactly
reflect the current model of the particular product described in this manual.
SPX reserves the right to change the construction and design of the products at any time
without being obliged to change previous models accordingly.
These instructions contain important and useful information on explosion
protection in accordance with EU directive 94/9/EC – ATEX.
All relevant instructions about installation, operation and maintenance of the
pump and the pump unit can be found in the separate pump’s ”Instruction
Manual”. These instructions should be adhered to at all times!
SPX Flow Technology Sweden AB
P.O. Box 1436
SE-701 14 Örebro
Sweden
Tel. [phone]
Fax. [phone]

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A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
1.0 General
1.1 Symbol
The following symbol is used to indicate special instructions concerning explosion
protection:
1.2 Safety Information
This manual covers the main issues concerning explosion protection and must be
used together with the general Instruction Manual for TopLobe pumps, called hereafter
‘‘IM’’ and the manuals of other equipment such as gear and motor drives.
For explosion protection safety it is imperative that the pump set must be protected from all
unauthorised operation and unnecessary wear.
Explosive gas mixtures or concentrations of dust,in conjunction with hot, live and moving
parts on pump, gear and motor unit, can lead to severe or fatal personal injuries.
Installation, connection, start-up, maintenance and repair work may only be
performed by qualied personnel while taking in account:
• these specic instructions, together with all other instructions for the installed
equipment and installation;
• warning and information signs on the equipment;
• the specic regulations and requirements for the system in which the pump unit will
operate (current valid national and regional regulations).
1.3 Responsibility for ATEX certication – extend of delivery
SPX will be held responsible only for delivered materials and equipment selected
according to the operating conditions data, based on information supplied by the customer
or the end user and stated in the order confirmation. When in doubt contact your local
supplier.
In the event SPX delivers a pump with bare shaft, the explosion protection certification
marking on the pump nameplate refers exclusively to the pump part. All other assembled
equipment should have separate certification of at least the same or higher grade of
protection as the pump, delivered by the supplier(s) of that equipment. The complete
unit must be certified separately by the final assembling manufacturer and must have a
separate name plate supplied by the pump unit manufacturer.
In the event SPX delivers a complete unit, the explosion protection certification, and
marking on the nameplate attached to the base plate or to the pump frame, will refer to that
specific unit.

6
Type:
Code:
Serial No:
SPX Flow Technology Sweden AB
P.O. Box 1436, SE-701 14 Örebro
www.spx.com
1
2
3
4
TopLobe
Serial No:
SPX Flow Technology Sweden AB, P.O. Box 1436,
SE-701 14 Örebro - www.spx.com
Type: 1
2
3
4
A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
Name plate on the unit (in case of delivery of complete unit by SPX)
1.4 Marking
Name plate on the pump
Pump type: example: TL2/0234-40/06-11-GB11-VV
Serial No: example: NNNN-xxxxxxx
(NNNN indicates the year of production)
Ex marking.: example: II 2G c T3-T4
Tech. File Ref.: TFR 03-13347-01/040416
2
3
4
1
Pump type: example: TL2/0234-40/06-11-GB11-VV
Serial No: example: NNNN-xxxxxxx
(NNNN indicates the year of production)
Ex marking.: example: II 2G c T3-T4
Tech. File Ref.: TFR 03-13347-01/040416
2
3
4
1

7
A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
1.5 ATEX type designation examples
Example 1: Ex II 2G c T3-T4
II 2G marking according to Group II, Category 2, Gas (G) protection
c marking essential for safe use ignition protection (c = constructional safe)
T3-T4 temperature class T3 to T4
Example 2: Ex II 2G c 240°C (T2)
II 2G marking according to Group II, Category 2, Gas (G) protection
c marking essential for safe use ignition protection (c = constructional safe)
240°C for a maximum surface temperature of 240 centigrade (degrees Celsius)
(T2) corresponding T2 temperature class.
Example 3: Ex II 2D c 240°C
II 2D marking according to Group II, Category 2, Dust (D) protection
c marking essential for safe use ignition protection (c = constructional safe)
240°C for a maximum surface temperature of 240 centigrade (degrees Celsius)
Environment temperature should be between -20°C and +40°C, if not, the corresponding
environment temperature will be indicated on the nameplate.
1.6 Temperature classes and allowable temperatures
In normal operation the highest temperature on the surfaces of the pump will either
correspond to the temperature of the pumped liquid marked up with safety margin for a
possible spot temperature rise on the mechanical seal, or the temperature on the gearbox
oil or the heating medium in case the pump is heated by jackets. The maximum permissible
temperature depends on the temperature class (T6 to T3) or on Tmax to be complied with.
The complete pump surfaces must be freely exposed to the atmosphere to allow proper
cooling.
All data (temperature classes) are related to ambient temperature of 20°C and 40°C.
If an ambient temperature above 40°C, correction must be made according to the
difference. Always contact your local supplier.
1.6.1 II 2G allowable temperature
• When the temperature limits are reduced because of internal materials selection, the
maximum allowable surface temperature Tmax will be supplied instead of the temperature
class, the same way as in case of D, dust protection.
• For T5 (100°C) and T6 (85°C) classes and if ambient temperature exceeds the range
-20°C / +40°C contact your local supplier.
TL4 TL3 TL2 TL1
Temperature of
pumped fluid °C 20 70 20 70 20 70 20 70
Mechanical seal
”Spot” temp. °C 57** 123** 57** 123** 57** 123** 57** 123**
Gearbox oil
temperature °C 58* 122* <<TL4 <<TL4 107 116* <<TL2 <<TL2
Temperature
class
Ambient temp.
20° C T6 T4 T4*** T4*** T4 T4 T4*** T4***
Ambient temp.
40° C T5 T4 T4*** T4*** T4 T3 T4*** T3***
*Calculated value based on extrapolation from a linear regression analysis of actual values.
** Correction based on recommendation from seal manufacturer to get the highest spot temperature on seal face.
*** Judgment based on earlier temp. tests - extra safety margin applied until nal tests are performed.

8A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
1.7 Responsibility
It is the responsibility of the operator to ensure that specified product temperatures are not
exceeded and to ensure regular inspections and maintenance for good operation of the
shaft seal and the internal pump parts. If this cannot be ensured by the operator, suitable
monitoring facilities must be provided, see 1.9.
1.8 Operation
• In case of a mechanical seal arrangement it is imperative that the pump will not run dry.
The pump must always be filled completely with, and lubricated by the product to be
handled during operation (including start-up, priming and shut-off).
• In case of self-priming operation, the appropriate shaft seal (quenched or ushed) must
be selected and controlled with regard to the quench/flushing liquid.
• The pump must never be operated continuously with the safety relief valve opened. The
relief valve is designed as a safety device in case of overpressure and may not be used
for flow control.
• When ow control is performed by by-passing the return liquid, the liquid must return
to the suction tank and not directly to the suction port of the pump, in which case heat
accumulation in the pump could create a dangerous situation.
• The pump must never be operated with the shut-off valves in the suction or discharge
lines closed.
• The pump can only run dry continuously, equipped with quench or ushing system in
operation.
1.6.2 II 2(G)D allowable temperature
The maximum surface temperature (Tmax) is indicated on the name plate.
Tmax is determined as the lowest temperature derived from following equations:
• Tmax = temperature limits of selected internal materials (i.e. pump selection).
• Tmax = T5mm - 75°C (T5mm “ignition temperature of a dust layer of 5 mm thickness”)
• Tmax = 2/3 x T.CI (TCI “ignition temperature of a dust cloud”).
Remark:
T5mm and TCI are to be determined by the customer/user in case of dust (D) protection.
In case the ambient temperature exceeds the range of -20°C / +40°C contact your local
supplier.

9
V1 L1 L2
V2
L3
A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
1.9 Monitoring
If good function and/or maximum allowable surface temperatures cannot be ensured by
regular inspection by the operator, suitable monitoring devices must be provided for.
Surface temperature monitoring is always of extreme importance in the following areas,
see gure 1:
• Surface temperature of the pump casing at the front cover (L1).
• In case of quenched/ushed seal arrangement, monitoring can be done by checking
the quench/flushing fluid, see 5.3. Use of quenched/flushed seal arrangement is highly
recommended when there is any risk of dry running or lubrication failure of the seal
such as in case of self priming.
• Surface temperature on the gearbox (L2, L3).
Additional vibration monitoring can be useful to detect excessive vibrations, indicating
premature failure of ball bearing or internal wear in the following areas:
• areas at the pump front (V1).
• gearbox area (V2).
Always contact your local supplier to get advice regarding positioning of sensors.
Fig 1 – Indication of monitoring possibilities and advised locations (optionally)

10 A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
1.10 Residual risks
(based on the risk analysis according to SS-EN13463-1)
Potential ignition source
Measures applied to prevent the source
becoming effective
Ignition protection
used
Normal
operation
Foreseeable
malfunction
Rare
malfunction
Related to hot
surfaces of
hydraulic end
The customer has to ensure that the temperature
of the pump and heating liquid do not exceed the
permissible temperature limits.
Additionally, the operator has to ensure that the
operating limits for speed, flow and pressure are not
exceeded.
SS-EN 13463-1 §6.1
Instruction Manual
+
Ex Instruction Manual
Related to hot
surfaces of
transmission
end
The customer has to ensure that the temperature
of the pump and heating liquid do not exceed the
permissible temperature limits.
Transmission surface must be freely exposed and
vented – no built in solution without special cooling
measures.
SS-EN 13463-1 §6.1
SS-EN 13463-5 §6
Instruction Manual
+
Ex Instruction Manual
Excessive heat
accumulation
Customer has to ensure a minimum flow through
the pump to eliminate accumulation of heat due to
internal hydraulic and/or mechanical losses.
Monitoring surface temperature of the pump casing
is a recommendable measure.
SS-EN 13463-1 §6.1
Instruction Manual
+
Ex Instruction Manual
Excessive heat
at shaft sealing
of mechanical
seal type
Customer has to follow the specific instructions for
the mechanical seal type in the instruction manual
and /or separate certificate instructions if present.
Single or double mechanical seals with flushing or
double mechanical seals with quench (barrier) are
to be protected by monitoring and/or controlling of
the flushing or quench liquid.
Seal arrangements without flushing or quench are
not allowed to run without completely air evacuated
pump casing. Pumped liquid must always surround
the seal.
SS-EN 13463-5 §4.4
Instruction Manual
+
Ex Instruction Manual
Mechanical
sparks caused
by contact
between
rotating parts
and stationary
pump com-
ponents
Excessive wear of shaft bearings and mechanical-
and/or lip-seal must be prevented through adequate
scheduled maintenance.
Shaft protection cover must always be in function.
This is considered to be a rare malfunction and is
therefore not considered in the risk assessment for
a category 2 pump.
SS-EN 13463-1
Instruction Manual
+
Ex Instruction Manual
Electrostatic
discharges
Customer should provide earth connections or
equipotential bridges in case of indirect risks.
This is considered to be a rare malfunction and is
therefore not considered in the risk assessment for
a category 2 pump.
SS-EN 13463-1
Instruction Manual
+
Ex Instruction Manual
Remarks:
• For category 2, the risks at “normal operation” and those at “foreseeable malfunction”
have to be controlled.
• For category 3, the risks at “normal operation” have to be controlled.

11
A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
2.0 Performance
• Operation of the pump outside its specied operating range may severely jeopardize
the whole function of the pump and increase the risk of exceeding allowable
temperature limits. See IM.
• In order to remove the heat generated by hydraulic and mechanical friction inside the
pump, it must be assured that there is always a sufficient minimum flow through the
pump. If this cannot be ensured under all possible operating conditions or because
the conditions might change over time due to wear, we advise to foresee a suitable
temperature monitoring device. (See chapter 1.9)
Note: Internally produced friction heat depends of pump speed and of the properties
of the pumped media: viscosity, specific heat, lubricating properties etc. It is the
responsibility of the operator to ensure the pump operates below the
allowable temperature limits as stated in 1.6.
Dangerous situations can occur in the following events and should be
prevented and/or excluded from normal operation and expected operation
(group II-category 2) by adequate operation, supervising and maintenance:
• Heat accumulation can be caused by internal leakage of the liquid from discharge side
to suction side of the pump.
The pump temperature could increase above allowable limit when the pump is
operating with the relief valve opened for a length of time or during flow control when
by-passing the medium to the suction side of the pump.
• Monitoring of the surface temperatures of the pump casing at indicated areas (see
figure 1) and controlling or monitoring the quench or flushing medium for the shaft seal
normally ensures sufficient protection against potentially dangerous situations.
• Running the pump without liquid will quickly (matter of seconds) cause severe damage
of the single seal arrangement without ushing. If any risk for dry running exists, ushing
or quench solution should always be used.

12 A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
3.0 Installation
3.1 Checks
Before installation, the equipment must be checked.
• Ensure the equipment data (as indicated on nameplate, documentation etc.)
corresponds to the explosive atmosphere zone, category and system requirements.
• Possible damage: the installed equipment must be undamaged and must have been
properly stored before installation. In case of any doubt or any damage found contact
your local supplier.
• Ensure that heated air from other units will not affect the environment of the pump unit;
environment air should not exceed a temperature of 40°C.
• The detailed check list (see 6.0) should be thoroughly followed.
3.2 ATEX certification
All additional equipment such as shaft couplings, guards, drive, motor, auxiliary
equipment etc. must be part of the ATEX certification or must be certified separately for
the appropriate temperature category. The assembled pump unit must have a separate
certification and a separate nameplate supplied by the pump
unit manufacturer.
3.3 Working environment
• The pump and unit must be accessible for maintenance and inspection during
operation, see IM.
• Venting of air supply to the pump, drive and motor should be ensured.
• An electric motor should have a free inlet for cooling air of at least 1/4 of its motor
diameter.
• The pump should be mounted with the shafts horizontally. Deviation from the
recommended installation will influence draining, filling, venting and good functioning of
the shaft seal, and the temperature distribution will be uncertain.
• Proper separate earthing facilities should be provided close to the pump unit baseplate.
• In hazardous areas the electrical connection has to be IEC60079-17 compliant.
3.4 Base plate
• The base plate must always be provided with an earthing boss.
• Ensure the earth circuit is properly connected to the baseplate.
3.5 Drive, shaft coupling and protection guard
• The starting torque of a rotary lobe pump is almost identical to the nominal torque
during operation. The starting torque of the motor must be sufciently high:
the motor power is selected 20% to 25% higher than the absorbed power of the
pump.
If the starting torque is too low it will take longer to start the pump and the motor
temperature could increase to an unacceptable level. When using a variable speed
motor the cooling device of the motor must operate independently from the motor
speed or must be guaranteed to be sufficient at its lowest speed.
• Follow the separate instructions for gear and motor drive and for explosion protected
shaft couplings.
• When using a belt drive, ensure the belts have sufcient electrical conductivity to
avoid electrostatic loads. Use only belts with electrical leakage resistance lower than
109Ohm and avoid using aluminium or light metal pulleys containing more than 7.5%
magnesium.

13
A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
• The compulsory coupling guard must be included in the explosion protection certicate
of the drive or pump unit or should be certified separately by the manufacturer or
supplier of the guard. The coupling guard must be made of non-sparking materials.
Never use light metals containing more than 7.5% magnesium! In case of
aluminium coupling parts or belt-pulleys, the coupling guard must be made of brass.
3.6 Direction of rotation
• Rotary lobe pumps can run in both rotation directions.
• The pump unit's direction of rotation should be tested with the motor disconnected
from the pump. Remember to secure or remove the shaft key in case of separate
testing.
Always align the coupling after having disassembled it and refit the coupling
guard!
3.7 Piping
• The suction and discharge lines should be designed properly for the required
performance conditions and should be executed accordingly, see IM.
Non compliance to the working conditions of the pump unit can cause severe problems
such as NPSH-problems, vapour lock, excessive vibrations and premature pump
failure.
• Lines should be checked on dimensions and tightness under pressure and should
be internally cleaned and be free of welding and foreign particles before they are
connected to the pump.
3.8 Shaft sealing auxiliary connections
The rotary lobe pumps allow the application of single or double mechanical shaft seals. In
order to ensure proper functioning, venting and lubrication of the shaft seals, connections
are available which will enable quench or flushing. For more information on the possibilities
and connections see IM.
3.9 Check alignment
After installation the alignment of the pump shaft and drive shaft must be checked,
preferably with the pump and the pipes completely filled with liquid, and must be corrected
if necessary.

14 A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
4.0 Commissioning
4.1 General
Take note that rotary lobe pumps are positive displacement pumps and procedures may
often differ from procedures commonly used for centrifugal pumps.
Follow the instructions in the IM and the separate instructions for the motor drive and
coupling.
Ensure that all the shut-off valves are fully opened and the strainers are
unclogged before starting up the pump!
4.2 Precautions
For explosion protection the following precautions are of importance:
• Ensure that the area around the pump and the pump unit is clean.
• Ensure that the suction line is tted securely and tight and is clean.
Welding particles should be removed in advance. The whole pump system must be
cleaned from particles.
• In case of SiC/SiC or carbon/SiC single shaft seal arrangement without ushing, the
pump and the shaft sealing area must be vented and filled with the liquid to be pumped
before any operation.
• In case of self-priming with quenched of ushed single/double mechanical shaft seal,
the flushing/quench liquid supply must be monitored to prevent dry running of the shaft
seal.
• Determine the direction of rotation with a switch on and off action of maximum1 second
to avoid dry running in case of single seal arrangement.
• Ensure the shut-off valves in the suction and discharge lines are opened at start-up.
• In case the pumped liquid needs to be heated, ensure the pump, shaft sealing area and
the product to be pumped are sufficiently preheated before start-up.
• Shut down the pump immediately in the event of irregular operating modes or
malfunction.
• Shut down the pump in case the ow drops or the pump pressure changes abnormally
(i.e. lower or higher pressure). A flow decrease or pressure change is often a sign of
malfunction, such as a clogged strainer, internal wear, etc. The cause must be found
and repaired before the pump should be started again, see the Trouble Shooting list, in
the IM.
Read ‘‘6.0 Limiting risks by means of check list’’ carefully as a complement to the above
4.2.

15
A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
5.0 Maintenance
5.1 General
• Pumps certied for ‘‘Explosion protection’’ need maintenance and precaution to
prevent risks of ignition due to malfunction and unacceptable wear.
• Follow the instructions given in the IM.
• A decrease of ow rate (or in case the pump does not supply the required pressure)
is an indication of a possible malfunction or a sign of internal pump wear and requires
maintenance or repairs. Other indications of internal pump wear is excessive noise
during operating, vibrations or shaft seal leakage.
5.2 Gearbox
• Excessive noise, vibrations and heat built-up are indication of malfunction and
premature failure of bearings and/or gear wheels.
• It is recommended to check bearings and vibrations by regular monitoring.
• Check oil level in gearbox, see IM.
• The axial clearance of the running internals is achieved by adjustment of the bearing
assembly. For information about axial clearance adjustment, see IM.
5.3 Shaft seals
• The correct function and lubrication of the shaft seals must be checked regularly and
dry running must be prevented.
• Several types of connections can be made to ensure proper quench, ushing, venting
and lubrication, see IM.
• For single seals, not being quenched or ushed, the operator must ensure that the
temperature of the seal area surfaces will not exceed the allowable temperature.
If this cannot be ensured by the operator, monitoring devices should be installed.
• Quenched or ushed seals (single or double) have to be protected by controlling the
quench/flushing liquid.
5.3.1 Quench/Flushing (see IM)
For a non-pressurised quench:
• Check the level in the supply reservoir;
• Check the temperature of the quench liquid;
• Check the condition of the quench liquid by inspection: change the quench liquid in
case it is heavily contaminated with leaking uid.
Note: Frequent contamination is an indication of an unacceptable shaft seal leakage,
which should be repaired.
For a pressurised quench:
• Check the level in the supply reservoir;
• Check the temperature of the quench liquid;
• Check the pressure.
Take note: the quench liquid should always be pressurised while the pump is
running, including at start and at shut-off periods.
• Check the condition of the quench liquid: change the quench liquid in case it is
contaminated with leaking uid.
Note: Contamination of the liquid is an indication of irregular or faulty operation and
should be inspected. E.g. the mechanical seal at medium side may be leaking or may be
opened due to insufficient counter pressure of the quench liquid.

16 A.0501.251 – Atex IM-TL/05.00 EN (12/2011)
6.0 Limiting risks by means of “check list”
6.1 During installation
• Check that the pipes are correctly connected and self supported. The pipe system
should not exert excessive forces on the pump connections during operation, including
weight of liquid, reaction forces and thermal expansion – have separate pipe supports
and compensators been provided for?
• Check the ange seals on the suction and pressure pipes.
• Check auxiliary circuits to seal system such as heating device, quench and ushing
solutions.
• Check that no solid particles can enter into the pump – pipes must be cleaned after
welding, possible presence of residues in the pipes must be eliminated.
• Check the alignment of the rotating parts between motor and pump after complete
installation.
• Check the rotating direction of the motor, after completed installation, in relation to the
suction and pressure direction of the pump. Perform the test with the motor detached
from the pump.
• Check that the pump unit (motor, pump and baseplate) is thoroughly earth grounded.
• Check the status on all electrically/ electronic devices such as sensors, data loggers,
frequency converters etc are in accordance with the applied ATEX regulation.
6.2 Before starting the pump
• Have all plugs and connections been sealed and tightened?
• Have the screws of the pump anges been tightened?
• If relevant, is the safety valve trimmed for the right pressure?
• If relevant, have the pump been sufciently warmed up before start up?
• Has thermal expansion or contraction of the liquid been provided for when heating
up or cooling down.
• If relevant, is the installation and operation of the quench respectively the ushing
system of the pump seal arrangement overlooked and tested?
• Have the protections against rotating parts been correctly mounted?
• Are the suction and pressure valves opened?
• Is the pump completely lled up with liquid if single seal arrangement is installed?
• Is the quench or the ushing system in proper operation if pump starts dry?
6.3 When starting the pump
• If relevant, start up auxiliary equipment, e.g. quench or ushing pressure and ow.
• Check that the pumps outlet and inlet valves are opened.
• Start up with sufcient start-up torque.
• Start up at low speed if speed regulator is used.
• Stop the pump if the safety valve opens or the outlet pressure rises too high.

17
A.0501.251 –Atex IM-TL/05.00 EN (12/2011)
6.4 When the pump is running
• Never close completely the suction valve or regulate the capacity/pressure by means of
it.
• Never close outlet valve completely without a safety valve installed – stop the pump by
electrically disconnect the motor.
• Check the correct operation of the auxiliary circuits, including: quench, ushing,
heating.
• Check for leakage and apply measures if necessary.
• Clean up any leakage and trace the cause of it.
• Check and evaluate regularly the data relevance from installed sensors.
• Regularly check and clean up dust accumulation on the pump unit and its surroundings.
• Regularly check and take measures for abnormal vibrations on the pump unit and the
pipe system.
6.5 When stopping the pump
• The pump can run as a turbine, if check valve is not installed, on the inuence of a
static or accumulated pressure difference, in which the liquid ows back towards the
suction side; put measures in place if this is not acceptable.
• Allow for thermal expansion or shrinkage of the liquid when heated up or cooled down.
• Try to stop the pump slowly and/or with reduced ow to avoid pressure transients (high
energetic pressure spikes) in the pipe system.

SPX FLOW TECHNOLOGY SWEDEN AB
Nastagatan 19, P.O. Box 1436
SE-701 14 Örebro, Sweden
P: [phone]
F: [phone]
E: [email protected]
SPX reserves the right to incorporate our latest design and material
changes without notice or obligation. Design features, materials of
construction and dimensional data, as described in this bulletin, are
provided for your information only and should not be relied upon unless
confirmed in writing.
Please contact your local sales representative for product availability in
your region. For more information visit www.spx.com.
ISSUED12/2011 A.0501.251 EN
COPYRIGHT ©2011 SPX Corporation
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