KRAL CL Series User manual

Operating instructions
KRAL screw pumps.
Series CL
Type CLF/CLL
OIC 02en-GB
Edition 2022-06
Original instructions
www.kral.at

Table of contents
1 About this document................................................... 4
1.1 General information.................................................... 4
1.2 Associated documents ............................................... 4
1.3 Target groups ............................................................. 4
1.4 Symbols...................................................................... 4
1.4.1 Danger levels ................................................. 4
1.4.2 Danger signs.................................................. 5
1.4.3 Symbols in this document .............................. 5
2 Safety ............................................................................ 5
2.1 Proper use.................................................................. 5
2.2 Foreseeable misuse ................................................... 5
2.3 Obligations of the operator-owner .............................. 6
2.4 Safety instructions ...................................................... 6
2.4.1 Fundamental safety instructions .................... 6
3 Identification ................................................................ 6
3.1 Type code................................................................... 6
3.2 Rating plate ................................................................ 8
4 Technical data.............................................................. 8
4.1 Operating limits .......................................................... 8
4.2 Required NPSH values .............................................. 8
4.3 Sound pressure level.................................................. 9
4.4 Weights ...................................................................... 9
5 Function description ................................................... 9
5.1 Pump structure ........................................................... 9
5.2 Functional principle .................................................... 9
5.3 Shaft seal ................................................................... 10
5.3.1 Seal variants inner bearing ............................ 10
5.3.2 Seal variants outer bearing ............................ 11
5.4 Overflow valve............................................................ 11
5.5 Housing variant/accessories ...................................... 12
6 Transportation, storage .............................................. 12
6.1 Dangers during transportation.................................... 12
6.2 Dangers during storage.............................................. 13
6.3 Unpacking and checking the state of delivery ............ 13
6.4 Transporting the pump/pump unit .............................. 13
6.5 Storing the pump ........................................................ 14
7 Preservation ................................................................. 14
7.1 Preservation table ...................................................... 14
7.2 Preserving the inner surfaces..................................... 14
7.3 Preserving the outer surfaces .................................... 15
7.4 Removing the preservation ........................................ 15
8 Installation, removal .................................................... 15
8.1 Dangers during installation......................................... 15
8.2 Dangers during removing ........................................... 16
8.3 Installing the pump ..................................................... 16
8.4 Removing the pump ................................................... 17
9 Connection ................................................................... 18
9.1 Dangers during connection work................................ 18
9.2 Connecting the pump to the pipe system ................... 18
9.3 Insulating the pump .................................................... 19
9.4 Assembling the pump and motor................................ 19
9.5 Connecting the pump unit to the power supply .......... 20
10 Operation...................................................................... 20
10.1 Dangers during operation ........................................... 20
10.2 Commissioning ........................................................... 20
10.2.1 Cleaning the pipe system ............................... 20
10.2.2 Filling and venting the pump .......................... 21
10.2.3 Checking the direction of rotation................... 21
10.2.4 Commissioning the pump............................... 22
10.3 During operation ......................................................... 23
10.3.1 Checking the operating pressure ................... 23
10.3.2 Monitoring the filter and/or strainer................. 24
10.3.3 Adjusting the overflow valve........................... 24
10.3.4 Switching off the pump unit ............................ 25
10.4 Decommissioning ....................................................... 25
10.4.1 Decommissioning the pump ........................... 25
10.5 Recommissioning ....................................................... 26
10.5.1 Recommissioning the pump ........................... 26
11 Maintenance.................................................................. 26
11.1 Dangers during maintenance...................................... 26
11.2 Required maintenance................................................ 26
11.3 Ball bearing (inner bearing) ........................................ 27
11.4 Ball bearing (outer bearing) ........................................ 27
11.5 Maintaining the pump ................................................. 27
12 Servicing ....................................................................... 27
12.1 Dangers during servicing ............................................ 27
12.2 Wear ........................................................................... 28
12.2.1 Signs of wear.................................................. 28
12.2.2 Shaft seal ....................................................... 28
12.3 Replacing the coupling ............................................... 28
12.3.1 Removing the coupling................................... 28
12.3.2 Installing the coupling..................................... 29
12.4 Replacing the mechanical seal (inner bearing)........... 30
12.4.1 Removing the mechanical seal ...................... 30
12.4.2 Installing the mechanical seal ........................ 31
12.5 Replacing the radial shaft seal (inner bearing) ........... 33
12.5.1 Removing the radial shaft seal ....................... 33
12.5.2 Installing the radial shaft seal ......................... 34
12.6 Replacing the ball bearing and screw set (inner
bearing)....................................................................... 35
12.6.1 Removing the ball bearing and screw set ...... 35
12.6.2 Installing the ball bearing and screw set ........ 36
12.7 Replacing the mechanical seal and ball bearing
(outer bearing) ............................................................ 37
12.7.1 Removing the mechanical seal and ball
bearing ........................................................... 37
12.7.2 Installing the mechanical seal and ball
bearing ........................................................... 39
12.8 Replacing the screw set (outer bearing) ..................... 40
12.8.1 Removing the screw set ................................. 40
12.8.2 Installing the screw set ................................... 41
13 Disposal ........................................................................ 43
13.1 Dismantling and disposing of the pump...................... 43
14 Troubleshooting........................................................... 43
14.1 Possible faults............................................................. 43
14.2 Troubleshooting .......................................................... 43
15 Accessories .................................................................. 46
15.1 Heating ....................................................................... 46
15.1.1 Possible types of heating ............................... 46
15.1.2 Electrical heating system................................ 46
2OIC 02en-GB Edition 2022-06 Operating instructions

Table of contents
15.1.3 Fluid heating system ...................................... 48
15.1.4 Heating system special design ...................... 49
16 Spare parts ................................................................... 50
16.1 Overview of inner bearing .......................................... 50
16.2 Overview of outer bearing .......................................... 51
16.3 Repair kit, overflow valve ........................................... 52
16.4 Overview of accessories ............................................ 53
17 Appendix ...................................................................... 54
17.1 Tightening torques for screws with metric screw
threads with and without wedge lock washers ........... 54
17.2 Tightening torques for screw plugs with thread
measured in inches and elastomer seal..................... 54
17.3 Contents of the Declaration of Conformity ................. 55
Operating instructions OIC 02en-GB Edition 2022-06 3

1 About this document
1.1 General information
1 About this document
1.1 General information
These instructions form part of the product and must be kept for future reference. Furthermore please
observe the associated documents.
1.2 Associated documents
oDeclaration of conformity according to EU Directive 2006/42/EC
oManufacturer's declaration according to EU Directive 2014/68/EU
oData sheet of the pump
oTechnical documentation of the supplied components
1.3 Target groups
The instructions are intended for the following persons:
oPersons who work with the product
oOperator-owners who are responsible for the use of the product
Persons who work with the product must be qualified. The qualification ensures that possible dangers
and material damage that are connected to the activity are detected and avoided. These persons are
qualified personnel who carry out the work properly due to their training, knowledge and experience
and on the basis of the relevant provisions.
Information on the required qualification of the personnel is provided separately at the beginning of the
individual chapters in these instructions. The following table provides an overview.
Target group Activity Qualification
Transport
personnel
Transporting,
unloading,
setting up
Qualified personnel for transport, mobile crane operators, crane op-
erators, forklift operators
Fitter Mounting,
connection
Qualified personnel for mounting
Electrician Electrical
connection
Qualified personnel for electric installation
Trained
personnel
Delegated task Personnel trained by the operator-owner who know the task deleg-
ated to them and the possible dangers arising through improper be-
haviour.
Tab.1: Target groups
1.4 Symbols
1.4.1 Danger levels
Signal word Danger level Consequences of non-observance
DANGER Immediate threat of danger Serious personal injury, death
WARNING Possible threat of danger Serious personal injury, invalidity
CAUTION Potentially dangerous situation Slight personal injury
ATTENTION Potentially dangerous situation Material damage
4OIC 02en-GB Edition 2022-06 Operating instructions

2 Safety
2.1 Proper use
1.4.2 Danger signs
Meaning Source and possible consequences of non-observance
Electrical voltage Electrical voltage causes serious physical injury or death.
Raised load Falling objects can result in serious physical injury or death.
kg
Heavy load Heavy loads can result in serious back problems.
Risk of slipping Discharging pumped liquid and oils on the foundation or tread
surfaces can cause falls with serious physical injury or death.
Flammable substances Discharging pumped liquid and oils can be easily inflammable
and can result in serious burns.
Hot surface Hot surfaces can cause burns.
1.4.3 Symbols in this document
Meaning
Warning personal injury
Safety instruction
Request for action
1.
2.
3.
Multi-step instructions for actions

Action result

Cross-reference
2 Safety
2.1 Proper use
oUse the pump solely for transporting lubricating liquids that are chemically neutral and that do not
contain gas or solid components.
oUse the pump only within the operating limits specified on the rating plate and in the chapter "Tech-
nical data". In the case of operating data that do not agree with the specifications on the rating
plate, please contact the manufacturer.
oThe pump is designed specially for the operating pressure named by the customer. If the actual op-
erating pressure deviates notably from this design pressure, damage to the pump can also arise
within the specified operating limits. This applies both to notably higher as well as to notably lower
operating pressures. Under no circumstances may the minimum pressure lie below 2bar. In case
of any doubt, please contact the manufacturer.
2.2 Foreseeable misuse
oAny use that extends beyond the proper use or any other use is misuse.
oThe product is not suitable for pumping liquids outside the operational limits.
oAny bypassing or deactivation of safety equipment during operation is prohibited.
Operating instructions OIC 02en-GB Edition 2022-06 5

3 Identification
2.3 Obligations of the operator-owner
2.3 Obligations of the operator-owner
The operator-owner is the person who operates the product commercially or permits a third party to
use it and who bears the legal responsibility for the product, the protection of the personnel and third
parties during its operation.
The product is used in industrial applications. The operator-owner is therefore subject to the statutory
obligations concerning occupational health and safety.
In addition to the safety instructions in these instructions, the regulations on safety, accident prevention
and environmental protection respectively valid for the range of application of the product are to be ob-
served.
2.4 Safety instructions
2.4.1 Fundamental safety instructions
The following safety instructions must be observed strictly:
oRead these operating instructions carefully and observe them.
oRead the operating instructions of the components carefully and observe them.
oHave work only carried out by qualified personnel/trained personnel.
oWear personal protective equipment and work carefully.
oPumped liquids can be subject to high pressure and can result in personal injury and damage to
property in case of incorrect operation or damaged components.
oPumped liquids can be hot, poisonous, combustible and caustic. Use corresponding protective
equipment.
oObserve the associated data sheets and safety regulations when handling dangerous materials.
oAvoid skin contact with system parts carrying liquids at operating temperatures exceeding 60°C.
oCollect any discharging pumped liquid safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations. Neutralize residues.
oKeep the mounting surfaces, scaffolding, ladders, lifting platforms and tools clean in order to pre-
vent slipping or stumbling.
oIf pressurized or energized components are damaged, shut down the pump immediately. Replace
the components or pump.
3 Identification
3.1 Type code
CLF0160.ADAAF.00021
1
2
3
4
7
8
5
6
Fig.1: Type code
Item Classification Description
1Type CLF oPump with free shaft end
oPump unit with flanges, large flange
oPump unit with or without pump bracket foot
CLL oPump with free shaft end
oPump unit with flanges, large flange with pressure
housing
2Size Corresponds to delivery rate in[l/min] at 1450rpm
6OIC 02en-GB Edition 2022-06 Operating instructions

3 Identification
3.1 Type code
Item Classification Description
3Shaft seal A Standard mechanical seal
B Hard material mechanical seal
C Standard radial shaft seal
D Magnetic coupling
E Mechanical seal with receiver
F Shaft seal PTFE with quench
G High-temperature radial shaft seal
H Mechanical seal balanced
J Stuffing box packing
L Mechanical seal with throttle ring
X Special design
4Pressure stage overflow
valve
A Pressure stage 0.0–9.9bar
B Pressure stage 10.0–19.9bar
C Pressure stage 20.0–29.9bar
D Pressure stage 30.0–39.9bar
E Pressure stage 40.0–55.0bar
Z Without overflow valve
X Special design
5Bearings, heating system
and pump housing material
A Inside bearing without heating system, Silafont pump
housing
B External bearing without heating system, Silafont pump
housing
C Inside bearing with electrical heating system, Silafont
pump housing
D External bearing with electrical heating system, Silafont
pump housing
E Inside bearing with fluid heating system, Silafont pump
housing
F External bearing with fluid heating system, Silafont pump
housing
X Special design
6 Suction-side accessories A Suction housing
B Suction strainer
C Connection for suction pipe
Z Without accessories
X Special design
7Completion P Pump with free shaft end
K Pump with completion (without motor)
F Pump unit with completion
8 Version index For internal administration
Tab.2: Type code
Operating instructions OIC 02en-GB Edition 2022-06 7

4 Technical data
3.2 Rating plate
3.2 Rating plate
KRAL GmbH, 6890 Lustenau, Austria www.kral.at KRAL GmbH, 6890 Lustenau, Austria www.kral.at
pSmax. / pDmax.
Ty p |Type
SN | Serial no.
Tmin. / Tmax. ºC
l/min
mm²/s
kg
min-¹
bar
bar
∆p
Jahr |Year Gewicht | Weight
n
Q
Art.-Nr. | Item no.
1
2
3
5
4
10
7
9
8
6
11
Fig.2: Rating plate
1Construction year
2Max. operating overpressure
suction-side/Max. operating
overpressure pressure-side
3Temperature range
4Serial number
5Type
6Article number
7Differential pressure
8Nominal delivery rate
9Rated speed
10 Nominal viscosity
11 Weight
4 Technical data
4.1 Operating limits
Size
Parameter Unit 5–
10
15–
26
32–
42
55–
85
105–
118
160–
210
235–
275
370–
450
550–
880
Max. operating overpressure [bar] 100 70 40
oWith pressure housing [bar] – 100 80
Max. temperature of the
pumped liquid
oRadial shaft seal [°C] 80
oStuffing box packing [°C] 80
oStandard mechanical seal [°C] 150
oMechanical seal of hard
material
[°C] 180
oInner bearing [°C] 180
oOuter bearing [°C] 180
Min. temperature for pump
materials
[°C] -10
Min.–max.
ambient temperature
[°C] -20...+50
Min.–max. viscosity min.–
max.
[mm2/s] 4–5000 4–3000 4–2000
Speed max. Depending on viscosity, suction head/NPSH value and size
Max. inlet pressure
oRadial shaft seal [bar] 0.5
oStuffing box packing [bar] 3
oMechanical seal [bar] 8
Tab.3: Operating limits
4.2 Required NPSH values
The required NPSH values of the pump depend on the size, the viscosity of the pumped liquid and the
speed.
The NPSH values are available on the website of the manufacturer:
www.kral.at/en/screw-pumps
8OIC 02en-GB Edition 2022-06 Operating instructions

5 Function description
4.3 Sound pressure level
4.3 Sound pressure level
Guide values at 1 m distance, 1450 min-1, 20 bar, 21 mm2/s
Size
5–
10
15–
26
32–
42
55–
85
105–
118
160–
210
235–
275
370–
450
550–
880
Max. sound pressure level ±3[dB(A)]
Pump 53.0 57.0 59.0 63.0 65.0 69.0 71.0 74.0 80.5
Motor 52.0 59.0 63.0 65.0 67.0 67.0 73.0 73.0 75.0
Pump unit 55.5 61.0 64.5 67.0 69.0 71.0 75.0 76.5 82.0
Tab.4: Sound pressure level
4.4 Weights
The weight is specified on the rating plate.
5 Function description
5.1 Pump structure
21
3
4 5 6
7
A
A
B
Fig.3: Pump structure
1Suction housing (accessories) 6Main screw
2Overflow valve (integrated) 7Counter flange
3Heating (accessories) AFlow direction
4Ball bearing BDirection of rotation
5Shaft seal
5.2 Functional principle
Screw pumps are rotating displacement pumps. Their displacement effect results from three rotating
screws and the enclosing pump housing.
Radial support of the screw set is effected through the sliding contact in the pump housing that de-
pends on lubrication by the pumped liquid. Screw pumps are therefore not suitable for dry running and
can only be used up to specific pressure limits and viscosity limits. Due to the narrow tolerances pump-
ing of suspended solids is not possible.
Axial support of the main screws is effected out by a lifetime-lubricated ball bearing4. Various shaft
seals5 are available for sealing the main screw at the outlet from the housing. In order to reduce the
pressure at the shaft seal a balancing cylinder is mounted at the main screw. The sealing chamber is
connected with the suction chamber via a relief line. An integrated overflow valve2 protects against ex-
cessive pressure that could cause housing parts to burst.
The default direction of the rotationB of the screw set is clockwise viewed from the motor.
The flow directionA is marked on the pump housing by an arrow.
Operating instructions OIC 02en-GB Edition 2022-06 9

5 Function description
5.3 Shaft seal
5.3 Shaft seal
The following types of shaft seals are offered:
oMechanical seal standard or hard material
oMechanical seal with quench
oMechanical seal with throttle ring
oRadial shaft seal standard or high-temperature
5.3.1 Seal variants inner bearing
Mechanical seal standard/hard material The lubrication of the mechanical seal1 inevit-
ably results in a low leak, that as a rule evapor-
ates. However, at low-volatile liquids such as
heavy fuel oil the leak becomes visible. The in-
tegrated leakage vent holes2 allow draining of
this leakage. The drainage through these holes
has to be kept free. Dry running must be avoided
at all costs, as the seal will overheat and be des-
troyed in a matter of seconds.
1
3 2
2
1Mechanical seal
2Leakage vent hole
3Ball bearing
Mechanical seal with quench If low-volatile liquids or liquids that tend to
harden when coming into contact with the atmo-
sphere are used, a mechanical seal1 can also
be used in combination with a radial shaft seal
ring3. This allows the sealing chamber to be
connected via the leakage vent holes2 with a
quench tank so that the side of the mechanical
seal facing away from the liquid will always be
kept under the exclusion of air.
1
4
2
2
3
1Mechanical seal
2Leakage vent hole for quench tank
connection
3Radial shaft seal ring
4Ball bearing
Mechanical seal with throttle ring The throttle ring3 serves as a secondary seal in
connection with a mechanical seal1. This lightly
contacting seal is for example used to seal a
steam quench, whereby a certain leakage is
emitted permanently via the throttle ring. Such a
quench system is used for the heating and flush-
ing of single action mechanical seals. The
throttle ring furthermore reduces the leak rate at
a total failure of the mechanical seal.
1 3
4
2
2
1Mechanical seal
2Leakage vent hole for quench tank
connection
3Throttle ring
4Ball bearing
Radial shaft seal standard/high-temperature Depending on the material used, radial shaft
seals can be used for temperatures of up to
150°C (standard) or 90°C (high pressure) re-
spectively.
The used radial shaft seal rings1 have one a lip
each used to seal against liquid outlet and air in-
let.
1
2
1Radial shaft seal ring
2Ball bearing
10 OIC 02en-GB Edition 2022-06 Operating instructions

5 Function description
5.4 Overflow valve
5.3.2 Seal variants outer bearing
Mechanical seal standard/hard material The lubrication of the mechanical seal1 inevit-
ably results in a low leak, that as a rule evapor-
ates. However, at low-volatile liquids such as
heavy fuel oil the leak becomes visible. The in-
tegrated leakage vent holes2 allow draining of
this leakage. The drainage through these holes
has to be kept free. Dry running must be avoided
at all costs, as the seal will overheat and be des-
troyed in a matter of seconds.
1
3
2
2
1Mechanical seal
2Leakage vent hole
3Ball bearing
Mechanical seal with quench If low-volatile liquids or liquids that tend to
harden when coming into contact with the atmo-
sphere are used, a mechanical seal1 can also
be used in combination with a radial shaft seal
ring3. This allows the sealing chamber to be
connected via the leakage vent holes2 with a
quench tank so that the side of the mechanical
seal facing away from the liquid will always be
kept under the exclusion of air.
1
4
2
2
3
1Mechanical seal
2Leakage vent hole for quench tank
connection
3Radial shaft seal ring
4Ball bearing
5.4 Overflow valve
Note oThe protection of the pump must be ensured either through an integrated overflow valve or through
an overflow valve/safety valve installed on the system side. The overflow valve/safety valve must
be installed pressure-side between the pump and the first shut-off valve.
oObserve the associated operating instructions and dimensioning sheet of the pump to set an over-
flow valve/safety valve installed on the system side.
Note oA function test of the overflow valve at least every 5 years is essential for the safe operation Ä Dur-
ing operation,Page23.
oScope and if necessary shorter test intervals must be specified by the operator-owner in accord-
ance with the requirements and national provisions (for example Austrian Ordinance of Safety and
Health (BetrSichV)).
oThe first function test must take place directly after the commissioning.
oAfter longer downtimes (> 4 weeks) the function of the overflow valve must be tested again.
1 2 43
Fig.4: Overflow valve, integrated
1Screw plug
2Adjusting screw
3Pressure spring
4Valve body
The overflow valve ensures that very high pressures that could result in housing parts bursting do not
arise.
The overflow valve is purely there as a safety element for the pump and should not be used for control
or regulation purposes such as maintaining pressure. If the valve is kept open for too long under ad-
verse operating conditions (high differential pressures and/or low viscosities) it will only take a few
minutes for the overflow valve and the valve seating to become damaged. As a result, the overflow
valve will leak permanently and there will be a corresponding reduction in the delivery rate. In addition
to this, circulation through the overflow valve for too long results in excess heating of the pump. This
reduces viscosity and can ultimately lead to pump failure.
Operating instructions OIC 02en-GB Edition 2022-06 11

6 Transportation, storage
5.5 Housing variant/accessories
It therefore has to be ensured through a safety valve at the system that the maximum operating pres-
sure always lies under the opening pressure of the overflow valve.
Note The opening pressure of the overflow valve is set to 110% of the differential pressure in the factory.
The overflow valve is accessible through a screw plug1 and can be adjusted from the outside Ä Dur-
ing operation,Page23.
Note At pumps without integrated overflow valve the suction housing can be mounted with a respective rota-
tion of 90°.
5.5 Housing variant/accessories
Housing variant/accessories Type Description
CLF Suction housing with/without
overflow valve
CLF Suction strainer
CLF Connection for suction pipe
CLL Pressure housing
6 Transportation, storage
6.1 Dangers during transportation
The following safety instructions must be observed:
oHave all work only carried out by authorized transport personnel.
oUse intact and correctly dimensioned hoisting equipment.
oEnsure that the means of transport is in a flawless state.
oEnsure that the centre of gravity of the load is taken into consideration.
oDo not stand under raised loads.
12 OIC 02en-GB Edition 2022-06 Operating instructions

6 Transportation, storage
6.2 Dangers during storage
6.2 Dangers during storage
The following safety instructions must be observed:
oObserve the storage conditions.
6.3 Unpacking and checking the state of delivery
Personnel qualification: oTrained personnel
1. Upon delivery check the pump/pump unit for damage during transportation.
2. Report damage during transportation immediately to the manufacturer.
3. Dispose of packaging material in accordance with the locally applicable regulations.
6.4 Transporting the pump/pump unit
Personnel qualification: oTransport personnel
Personal protective equipment: oWork clothing
oProtective helmet
oProtective gloves
oSafety boots
Aids: oMobile crane, forklift, hoisting equipment
WARNING
Risk of injury and damage to equipment through falling and toppling parts.
► Use intact and correctly dimensioned hoisting equipment in accordance with the total weight to be
transported.
► Select the lift points for the hoisting equipment in accordance with the centre of gravity and the
weight distribution.
► Use at least two load ropes.
► In the case of vertical transportation secure the motor against tippling.
► Do not stand under raised loads.
ATTENTION
Damage to equipment through improper transportation.
► Protect the pump against damage, heat, sunlight, dust and moisture.
Fig.5: Fastening of hoisting equipment - principle diagrams
1. Attach the hoisting equipment to the pump/pump unit and tighten. Ensure that the centre of grav-
ity lies exactly under the crane hook.
Operating instructions OIC 02en-GB Edition 2022-06 13

7 Preservation
6.5 Storing the pump
2. Lift the pump/pump unit carefully and put it down shock-free.
3. Before loosening the transport belts ensure that the pump/pump unit is secured against tilting.
6.5 Storing the pump
During the test run, the internal components of the pump are wetted with test oil, which has a preser-
vative effect. Pressure connection and suction connection are closed with protective caps. Unless oth-
erwise specified, the outer surfaces of the pump are preserved with a single-coat PU-based two-com-
ponent paint.
The preservative applied at the factory will protect the pump for about six weeks, if it is stored in a dry
and clean location.
The manufacturer offers a long-term preservation for storage times of up to 60months. The pump is
additionally packed in hermetically sealing anti-corrosion paper.
Personnel qualification: oTransport personnel
Aids: oMobile crane, forklift, hoisting equipment
ATTENTION
Damage to equipment and corrosion if stored improperly and during longer standstills.
► Protect the pump against damage, heat, sunlight, dust and moisture.
► Protect against corrosion during longer standstill.
► Observe measures for storing and preservation.
1. Store cool and dry and protect against sunlight.
2. Ensure that the anti-corrosion paper is not damaged.
3. Observe the intervals for preservation Ä Preservation,Page14.
7 Preservation
7.1 Preservation table
Preservation has to be carried out additionally under the following conditions:
Type of delivery Condition
Standard delivery oStorage time exceeding six weeks
oUnfavourable storage conditions such as high humidity,
salty air, etc.
Delivery with long-term preservation oOpened or damaged packaging
Tab.5: Conditions for additional preservation
7.2 Preserving the inner surfaces
Personnel qualification: oTrained personnel
Personal protective equipment: oWork clothing
oProtective gloves
oSafety boots
Aids: oPreservative (acid-free and resin-free oil)
1. Open the packaging carefully. If the pump is protected additionally by anti-corrosion paper, en-
sure that it is not damaged.
2. Close the suction connection of the pump with a blind flange.
3. Pour the preservative into the pressure connection until it reaches approx.2cm under the rim,
while slowly turning the main screw against the direction of rotation.
4. Close the pressure connection of the pump with a new blind flange.
5. Close the packaging carefully.
6. After about six months storage check the filling level of the preservative and if necessary top up.
14 OIC 02en-GB Edition 2022-06 Operating instructions

8 Installation, removal
7.3 Preserving the outer surfaces
7.3 Preserving the outer surfaces
Personnel qualification: oTrained personnel
Personal protective equipment: oWork clothing
oFace protection
oProtective gloves
oSafety boots
Aids: oCalcium complex grease (for example TEVI-
ER®GREASEWAWE100 with adhesive additive)
oCastrol Rustilo DWX 33 or other preservative offering compar-
able protection
1. Brush calcium complex grease corrosion protection (for example TEVIER® FETT WAWE 100
with adhesive additive) to the mounting surfaces.
2. Brush or spray preservative (for example Castrol Rustilo DWX 33) onto the process connections
and remaining plain and unpainted parts.
3. At intervals of about six months check the preservation and if necessary repeat.
7.4 Removing the preservation
Personnel qualification: oTrained personnel
Personal protective equipment: oWork clothing
oFace protection
oProtective gloves
oSafety boots
Aids: oSolvent
oCollection tank
oSteam-jet cleaning device with wax-dissolving additives
CAUTION
Risk of injury through discharging preservative.
► Wear personal protective equipment during all the work.
► Collect any discharging preservative safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations.
1. Clean the outside of the pump with solvents, if necessary using a steam-jet cleaning device.
2. Remove the pressure-side blind flange carefully in order to reduce any pressure that may exist in
the pump.
3. Drain the pump, collecting the preservative in a suitable vessel.
4. Remove the blind flange on the suction side.
5. To remove the residual preservative, flush the pump with the pumped liquid.
8 Installation, removal
8.1 Dangers during installation
The following safety instructions must be observed strictly:
oHave all work carried out only by authorized qualified personnel.
oBefore installation ensure that the operating limits, NPSH values and ambient conditions are ob-
served.
oObserve the tightening torques Ä Appendix,Page54.
oEnsure that all the components can be accessed and that maintenance work can be carried out
easily.
Operating instructions OIC 02en-GB Edition 2022-06 15

8 Installation, removal
8.2 Dangers during removing
8.2 Dangers during removing
The following safety instructions must be observed strictly:
oHave all work carried out only by authorized qualified personnel.
oBefore beginning work, let the pump unit cool down to the ambient temperature.
oCollect any discharging pumped liquid safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations.
oEnsure that the collection tank for discharging pumped liquid is sufficiently large.
8.3 Installing the pump
The pumps can be operated in horizontal and vertical installation position.
Note Soiling in the pipe system impair the service life of the pump. If the pipe system is flushed using the
pump during the initial commissioning, an additional commissioning filter has to be installed temporarily
before the pump at the system (mesh width: 0.02mm).
Personnel qualification: oTransport personnel
oFitter
Personal protective equipment: oWork clothing
oProtective helmet
oProtective gloves
oSafety boots
Aids: oMobile crane, forklift, hoisting equipment
WARNING
Risk of injury and damage to equipment through falling and toppling parts.
► Only fasten the pump on a stable load-bearing underground or stable load-bearing load support.
► Ensure that fastening elements and pipings are fastened sufficiently.
ATTENTION
Damage to motor through discharging pumped liquid.
► Do not install the pump above the motor.
ATTENTION
Damage to device through impurity in the pipe system.
► During welding work attach protective covers in front of the connecting flanges.
► Ensure when welding that welding beads and abrasive dust cannot get into the pipe system and
the pump.
► Ensure that a commissioning filter is installed when the pipe system is flushed and cleaned using
the pump.
Note Ensure an oil level of at least 60 - 70 cm over the suction strainer in case of operation with a suction
strainer.
1
2
Fig.6: Flow direction
1Pressure connection
2Suction connection
16 OIC 02en-GB Edition 2022-06 Operating instructions

8 Installation, removal
8.4 Removing the pump
Requirement:
üPump protection: Integrated overflow valve or system-side overflow valve/safety valve installed.
üPump connections protected against soiling, for example by using the protective cover mounted in
the factory
üIf required, hoisting equipment prepared
1. Bring the pump in the installation position, while observing the position of the motor and the ar-
rows for the flow direction on the pump housing (1pressure connection, 2suction connection).
2. Fasten the pump with fastening elements securely on the underground.
8.4 Removing the pump
Personnel qualification: oTransport personnel
oFitter
oElectrician
Personal protective equipment: oWork clothing
oProtective helmet
oFace protection
oProtective gloves
oSafety boots
Aids: oMobile crane, forklift, hoisting equipment
oCollection tank
DANGER
Risk of death resulting from electric shock.
► Ensure that the electrical power supply is de-energized and is secured against being switched
back on.
► Observe the operating instructions of the electrical components.
DANGER
Risk of death through emitted pumped liquid.
Pumped liquids can be hot, poisonous, combustible and caustic and can spray out under high pres-
sure.
► Wear personal protective clothing during all the work. Ensure face protection.
► Before beginning work, let the pump unit cool down to the ambient temperature.
► Ensure that the pump is depressurized.
► Collect any discharging pumped liquid safely and dispose of it in an environmentally compatible
manner in accordance with the applicable local regulations.
Requirement:
üPump unit cooled down to the ambient temperature
üPump unit disconnected from the electrical power supply, deenergized and secured against being
switched back on
1. Close the pressure-side and suction-side shut-off devices.
2. Empty the pump at the lowest point. Collect the discharging pumped liquid in a collection tank.
3. Dismantle the pressure-side and suction-side connecting flanges.
4. Disconnect the pump unit from the pipe system and empty it. Collect any discharging pumped
liquid.
5. Screw out the fastening elements used to fasten the pump.
6. Dismantle the pump unit on site or transport it to a suitable location Ä Transportation, stor-
age,Page12.
Operating instructions OIC 02en-GB Edition 2022-06 17

9 Connection
9.1 Dangers during connection work
9 Connection
9.1 Dangers during connection work
The following safety instructions must be observed strictly:
oHave all work on the pump and pipe system only carried out by authorized qualified personnel.
oEnsure that impurities cannot get into the pump and pipe system.
oEnsure that mechanical connections are mounted stress-free.
oObserve the tightening torques Ä Appendix,Page54.
oHave all the work on the electrical equipment only carried out by electricians.
oBefore beginning work on the pump ensure that the electrical power supply is deenergized and is
secured against being switched back on.
oIf the insulation of the electrical cables or wires is damaged, disconnect the power supply
immediately.
9.2 Connecting the pump to the pipe system
Personnel qualification: oTransport personnel
oFitter
Personal protective equipment: oWork clothing
oProtective gloves
oProtective helmet
oSafety boots
Aids: oMobile crane, forklift, hoisting equipment
ATTENTION
Damage to device through impurity in the pipe system.
► During welding work attach protective covers in front of the connecting flanges.
► Ensure when welding that welding beads and abrasive dust cannot get into the pipe system and
the pump.
► Ensure that a commissioning filter is installed when the pipe system is flushed and cleaned using
the pump.
ATTENTION
Damage to device through mechanical stress.
► Ensure that the pump is mounted free of mechanical stresses in the pipe system.
► Observe the tightening torques.
Fig.7: Connection to pipe system
1. Turn the pump shaft or the fan impeller of the motor. This tests that the pump runs smoothly.
If the pump shaft cannot be turned by hand, remedy the fault before installing the pump Ä
Troubleshooting,Page43.
2. Before carrying out welding work mount a protective cover on the suction connection and pres-
sure connection.
3. Place the piping in position and support the weight of the piping.
4. Check the linear, height and angular offset and correct if necessary.
ðIf the screws tighten easily, this is a sure sign that the installation is stress-free.
5. Tighten the connecting screws crosswise with torque, Table of tightening torques Ä Ap-
pendix,Page54.
18 OIC 02en-GB Edition 2022-06 Operating instructions

9 Connection
9.3 Insulating the pump
9.3 Insulating the pump
Personnel qualification: oFitter
Personal protective equipment: oWork clothing
oProtective gloves
oSafety boots
Aids: oInsulation material
WARNING
Hot surface.
Touching of uninsulated hot surfaces results in burns.
► Insulate components and pipings in which hot liquids (>60°C) flow before commissioning.
Before commissioning, carefully insulate all potentially hot surfaces of the pump and the connec-
ted piping or provide suitable protection against accidental contact.
9.4 Assembling the pump and motor
Personnel qualification: oFitter
Personal protective equipment: oWork clothing
oProtective gloves
oSafety boots
ATTENTION
Damage to coupling and bearing through incorrect alignment of the coupling.
► To guarantee a long service life of the coupling, align shaft ends exactly.
► After assembly check permissible displacement figures of the coupling according to table below.
DH
E
L
ΔKa
L
(-)
max.
= L +
ΔKa
H
D
r
K
Δ
E
H
D
ΔKw (mm) = L
max.
- L
L
min.
min.
ΔKw
max.
L
(+)
Fig.8: Coupling alignment measuring points
Outer diameter Coupling distance Max. axial displacement Max. radial displacement Max. angular displacement
DH E ΔKa ΔKr ΔKw
[mm] [mm] [mm] [mm] [°] [mm]
40 16 -0.5/+1.2 0.20 1.2 0.8
55 18 -0.5/+1.4 0.22 0.9 0.9
65 20 -0.7/+1.5 0.25 0.9 1.1
80 24 -0.7/+1.8 0.28 1.0 1.4
95 26 -1.0/+2.0 0.32 1.0 1.7
120 30 -1.0/+2.2 0.38 1.1 2.3
135 35 -1.0/+2.6 0.42 1.2 2.7
160 40 -1.5/+3.0 0.48 1.2 3.3
Tab.6: Limit values for aligning the shaft coupling
Operating instructions OIC 02en-GB Edition 2022-06 19

10 Operation
9.5 Connecting the pump unit to the power supply
1. Check the radial displacementΔKr of the coupling using a hairline gauge and feeler gauge.
Check several points along the periphery of the coupling.
2. Check the angular displacementΔKw of the coupling using a hairline gauge.
3. Check the axial displacementΔKa of the coupling using a slide gauge or feeler gauge.
4. If the limit values of the above table are exceeded, loosen the fastening of the pump or motor and
move pump or motor in order to reduce the respective offset.
9.5 Connecting the pump unit to the power supply
Personnel qualification: oElectrician
Aids: oOperating instructions of the motor
oMotor circuit diagram
DANGER
Risk of death resulting from electric shock.
► Ensure that the electrical power supply is de-energized and is secured against being switched
back on.
► Before commissioning ensure correct grounding and equipotential bonding.
► Observe the operating instructions of the electrical components.
1. Ensure that the operating data on the rating plate of the motor agree with the operating data of
the pump and with the local power supply.
2. Carefully earth the pump bracket foot, base frame or pedestal via the screwing.
3. Connect the motor in accordance with the operating instructions and circuit diagram in the motor
terminal block.
4. When connecting the pump unit to the complete system continue equipotential bonding.
10 Operation
10.1 Dangers during operation
The following safety instructions must be observed strictly:
oHave all work carried out only by authorized qualified personnel.
oBefore commissioning ensure that a safety valve has been installed in the pipe system on the
pressure side before the first shut-off device.
oBefore commissioning, make sure that the suction line and pump are filled.
oPumped liquids can be hot, poisonous, combustible and caustic. Use corresponding protective
equipment.
oEnsure that the pump station is only operated within the operating limits.
oWear hearing protection if you work for a longer time directly at the pump.
oEnsure that the maximum permissible system pressure is not exceeded.
oEnsure that during cooling down or heating up the pump is only subjected to slow temperature
changes.
oEnsure that existing safety equipment is not bypassed or activated during operation.
oBefore decommissioning ensure that the electrical power supply is deenergized and is secured
against being switched back on.
10.2 Commissioning
10.2.1 Cleaning the pipe system
Note Soiling in the pipe system impair the service life of the pump. If the pipe system is flushed using the
pump during the initial commissioning, an additional commissioning filter has to be installed temporarily
before the pump at the system.
Personnel qualification: oFitter
Personal protective equipment: oWork clothing
oProtective gloves
oSafety boots
20 OIC 02en-GB Edition 2022-06 Operating instructions