Viking SLAL User Manual
TECHNICAL SERVICE MANUAL
SECTION TSM 288
SL SERIES ROTARY LOBE PUMPS
MODELS SLAS, SLAL, SLBS, SLBL, SLCS, SLCL,
SLDS, SLDL, SLES, SLEL, SLFS, SLFL, SLGS, SLGL
CONTENTS
1.0 Safety Information ...................................................2
1.1
Pump Classic+ Rotary Lobe Pumps and Pump
Units in Potentially Explosive Atmospheres ............
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.6.1
2.7
2.8
3.0
3.1
3.2
3.3
3.4
3.4.1
3.5
3.6
3.7
3.8
3.8.1
3.8.2
3.9
3.9.1
3.9.2
4.0
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.1.9
4.1.10
4.2
4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
4.2.8
5.0
5.1
Risk Assessment Relating to the Use of Viking
Introduction .............................................................3
General ...................................................................3
Viking Pump Distributors .........................................3
Receipts and Storage..............................................3
Cleaning ..................................................................3
Pump Model Designation ........................................4
Atex Information Plate .............................................4
Equipment Groups & Categories ............................4
Pump Model and Serial Number .............................4
Standard Pump Component Terms .........................5
General ...................................................................5
SL Pumping Principle ..............................................5
Rotary Lobe Pump Principle ...................................5
SL Pump Operating Parameters .............................5
System Design and Installation ...............................6
Installation For In-Line Cleaning Systems...............7
Start Up Procedure .................................................7
Shutdown Procedure...............................................8
Routine Maintenance ..............................................8
Integral Pressure Relief Valves ...............................8
Setting and Operating Spring Loaded Valves .........8
Setting and Operating Air Loaded Valve .................9
Rectangular Inlet ................................................... 11
Jacketed Head ......................................................11
Jacketed Casing....................................................12
SL Pump Dismantling and Assembly ....................12
Pump Assembly SLA – SLF ..................................13
Shaft Assembly .....................................................13
Rolling Torque / Pre-load .......................................14
Casing Assembly...................................................14
Rotor Assembly .....................................................15
Setting Front Clearances SLA – SLD ....................15
Setting Front Clearance SLE and SLF ..................15
Foot Assembly.......................................................16
Timing – Multilobe Rotors Only .............................16
Gearbox Assembly ................................................17
Final Assembly ......................................................17
Pump Assembly SLG ............................................18
Shaft Assembly .....................................................18
Rolling Torque / Pre-load .......................................19
Final Pre-load Assembly .......................................19
Timing – Multilobe Rotors only ..............................19
Foot Assembly.......................................................20
Setting Front Clearance SLG ................................21
Final Assembly ......................................................21
Gearbox Assembly ................................................22
Seals .....................................................................23
Single Seal SLA – SLG .........................................23
PAGE 1 OF 36
ISSUE A
5.2
5.3
5.4
3
5.5
5.6
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Single Flush SLA – SLF ........................................24
Single Flush SLG ..................................................26
Double Seal SLA, SLB, SLC .................................27
Double Seal SLD – SLG .......................................29
Rotary Seal Removal ............................................30
Specications ........................................................31
Clearance Chart ....................................................31
Fasteners & Torque Settings .................................32
Lip-Seal Setting Distances ....................................33
Lubricants..............................................................33
Material Specication ............................................33
Trouble Shooting ...................................................33
SL Series Foundation Dimensions ........................34
Tool List .................................................................35
SL SERIES PUMP CUTAWAY
SL SERIES PUMP WITH HEAD REMOVED
VIKING PUMP, INC. • A Unit of IDEX Corporation • Cedar Falls, IA 50613 USA
1.0 SAFETY INFORMATION
INCORRECT INSTALLATION, OPERATION OR MAINTENANCE OF EQUIPMENT MAY CAUSE SEVERE
PERSONAL INJURY OR DEATH AND/OR EQUIPMENT DAMAGE AND MAY INVALIDATE THE WARRANTY.
This information must be read fully before beginning installation, operation or maintenance and must be
kept with the pump. All installation and maintenance must be undertaken by suitably trained or qualified
persons only.
Symbol
Legend :
Danger - Failure to follow the listed
precautionary measures identified by
this symbol may result in serious injury
!
or death.
WARNING
Warning - Safety instructions which
shall be considered for reasons of safe
operation of the pump or pump unit and/
or protection of the pump or pump unit
itself are marked by this symbol.
!
!
!
!
WARNING
!
!
WARNING
WARNING
WARNING
DO NOT OPERATE PUMP IF:
- The head is not installed correctly.
- Any guards are missing or incorrectly installed.
- The suction or discharge piping is not connected.
DO NOT
place ngers, etc. into the pumping chamber
or its connection ports or into any part of the gearbox if
there is ANY possibility of the pump shafts being rotated.
Severe injury will occur.
DO NOT
exceed the pumps rated pressure, speed, and
temperature, or change the system/duty parameters
from those for which the pump was originally supplied,
without conrming its suitability for the new duty. Running
the pump outside of its operating envelope can cause
mechanical contact in the pump head, excessive heat
and can represent a serious risk to health and safety.
Installation and operation of the pump must always
comply with health and safety regulations.
A device must be incorporated into the pump, system,
or drive to prevent the pump exceeding its stated duty
pressure. It must be suitable for both directions of pump
rotation where applicable. Do not allow pump to operate
with a closed/blocked discharge unless a pressure
relief device is incorporated. If an integral relief valve is
incorporated into the pump, do not allow re-circulation
through the relief valve for extended periods, refer to
section 3.8
The mounting of the pump or pump unit should be solid
and stable. Pump orientation must be considered in
relation to drainage requirements. Once mounted, shaft
drive elements must be checked for correct alignment.
Rotate pump shaft by at least one full revolution to ensure
smoothness of operation. Incorrect alignment will produce
excessive loading and will create high temperatures and
increased noise emissions. It may also be necessary to
earth the pump to avoid the build up of a potential charge
difference that could cause a spark.
The installation must allow safe routine maintenance and
inspection (to check for leakage, monitor pressures, etc)
and provide adequate ventilation necessary to prevent
overheating.
SL series pumps are shipped fully lubricated with a lithium
based extreme pressure Grease suitable for sealed for
life units.
Before operating the pump, be sure that it and all parts
of the system to which it is connected are clean and
free from debris and that all valves in the suction and
discharge pipelines are fully opened. Ensure that all piping
connecting to the pump is fully supported and correctly
aligned with its relevant connections. Misalignment
and/or excess loads will cause severe pump damage.
This could result in unexpected mechanical contact in
the pump head and has the potential to be a source of
ignition.
Be sure that pump rotation is correct for the desired
direction of ow (refer to section 3.1).
WARNING
WARNING
!
!
!
!
!
!
WARNING
!
Do not install the pump into a system where it will run
dry (i.e. without a supply of pumped media) unless it is
equipped with a ushed shaft seal arrangement complete
with a fully operational ushing system. Mechanical seals
require a thin uid lm to lubricate the seal faces. Dry
running can cause excessive heat and seal failure.
Pressure gauges/sensors are recommended, next to
the pump suction and discharge connections to monitor
pressures.
Caution must be taken when lifting the pump. Suitable
lifting devices should be used as appropriate. Lifting eyes
installed on the pump must only be used to lift the pump,
not pump with drive and/or base plate. If pump is base
plate mounted, the base plate must be used for all lifting
purposes. If slings are used for lifting, they must be safely
and securely attached.
DO NOT
attempt any maintenance or disassembly of the
pump or pump unit without rst ensuring that:
- The pump is fully isolated from the power source
(electric, hydraulic, pneumatic).
- The pumping chamber, pneumatic relief valve and
any shaft seal support system are depressurized and
purged.
- Any temperature control devices (jackets,
etc) are fully isolated, that they are depressurized and
purged, and components are allowed to reach a safe
handling temperature.
DO NOT
which has not had the spring pressure relieved, is still
connected to a pressurized gas/air supply or is mounted
on a pump that is operating. Serious personal injury or
death and/or pump damage may occur.
DO NOT
pump, shaft seal housings, temperature control devices,
or other components, until sure that such action will not
allow the unsafe escape of any pressurized media.
Pumps and/or drives can produce sound power levels
exceeding 85dB (A) under certain operating conditions.
When necessary, personal protection against noise must
be taken
Avoid any contact with hot parts of pumps and/or drives
that may cause injury. Certain operating conditions,
temperature control devices (jackets, heat-tracing, etc.),
bad installation, or poor maintenance can all promote
high temperatures on pumps and/or drives.
When cleaning, either manually or by an in-line cleaning
method, the operator must ensure that a suitable
procedure is used in accordance with the system
requirements. During a in-line cleaning cycle, a pump
differential pressure of between 2 and 3 bar (30 and 45
psi) is recommended to ensure suitable velocities are
reached within the pump head. The exterior of the pump
should be cleaned periodically.
Surface temperature of pump is also dependent on the
temperature of pumped medium.
attempt to dismantle a pressure relief valve,
loosen or undo the head, any connections to the
heat-tracing,
SECTION TSM 288 ISSUE A PAGE 2 OF 36
1.1 RISK ASSESSMENT RELATING
TO THE USE OF VIKING PUMP
SL SERIES ROTARY LOBE
PUMPS AND PUMP UNITS IN
POTENTIALLY EXPLOSIVE
ATMOSPHERES
NOTE
For a feature to be suitable for an application, the
feature must be t for its designated purpose and also
suitable for the environment where it is to be installed.
Source
of Hazards
Unvented
Cavities
Casing /
Rotors /
Head
Pump
External
Surfaces
Cover
O-Ring
Pump
Casing / Cover
Shaft Seals
Auxiliary
System for
Shaft
Sealing
Rotation
Direction
Test
Closed
Valve
Condition
Shaft
Mechanical
Shaft
Coupling
(Torque
Protection)
Mechanical
Shaft
Coupling
(Standard)
Potential
Hazards
Build up of explosive gas
Unintended mechanical
contact
Excess temperature.
Electrostatic charging
Pump liquid leakage.
Build up of explosive gas
Pump liquid leakage.
Build up of explosive gas
Excessive temperature.
Unintended mechanical
contact. Leakage.
up of explosive gas
Pump liquid leakage.
Build up of explosive gas
Excess Temperature
Excess Temperature.
Excess Pressure.
Mechanical Contact
Random induced current
Temperature from
friction. Sparks from
break up of shear pins.
Electrostatic charging
Break up of spider.
Unintended
mechanical contact.
Electrostatic charging
Build
Frequency
of Hazards
Very Rare
Rare
Rare
Very Rare
Very Rare
Rare
Rare
Very Rare
Rare
Very Rare
Rare
Rare
Recommended
Measures
Ensure that pump is totally
lled. Consider mounting
ports vertically.
Ensure that operating
pressures are not
exceeded. Ensure that
sufcient NPSH to prevent
cavitation. Service Plan.
User must ensure
temperature limits. Do not
overll gearboxes with
lubricant. Provide a ground
contact for pump.
Service plan.
Check selection of
elastomers are suitable for
application. Ensure cover
retaining nuts are tight.
Service plan.
Stainless Steel.
Corrosion Resistant.
Selection of seal system
must be suitable for
application. Manual.
Service plan. Seals must
never run dry.
Selection of auxiliary seal
system must be suitable
for application. Seals must
never run dry.
If ushed seals are
installed, ensure that
ush is applied to seal
assemblies. Only allow
pump to run for minimum
period - just a few seconds.
Can cause excessive
pressure, heat and
mechanical contact.
Manual.
Provide a ground
contact for pump.
Coupling selection must
suit application.
Provide ground
contact for pump.
Coupling selection must
suit application. Service
plan. Provide ground
contact for pump.
2.0 INTRODUCTION
2.1 GENERAL
SL Series rotary lobe pumps are manufactured by Johnson
Pump (UK) Ltd. , a subsidiary of Viking Pump Co., (a unit of the
IDEX Corporation).
This manual includes all the necessary information for SL
Series pumps and should be read prior to beginning installation,
operation, or maintenance.
Should you require any additional information regarding the
SL Series pumps contact Viking Pump or their local authorized
distributor, refer to section 2.2.
When asking for assistance please provide the pump model
and serial number. This information can be obtained from the
pump nameplate which is located on the side of the bearing
housing, refer to section 2.7.
Should the nameplate be unreadable or missing the serial
number is also stamped on either side of the casing refer to
section 2.7.
If the system or product characteristics are to be changed from
the original application for which the pump was selected, or
their authorized distributor should be consulted to ensure the
pump is suitable for the new application.
2.2 VIKING PUMP DISTRIBUTORS
Viking Pump distributes its products internationally via a network
of authorized distributors. Throughout this manual where
reference is made to Viking Pump, service and assistance will
also be provided by any Viking Pump authorized distributor for
SL Series pumps.
2.3 RECEIPTS AND STORAGE
Upon receipt of the pump, immediately examine it for any signs
of visible damage. If any damage is noted, contact Viking
Pump or your Viking Pump distributor and clearly mark upon
the carriers’ paperwork that the goods have been received in a
damaged condition, with a brief description of damage.
If the pump is not required for immediate installation then it
should be stored in a clean, dry environment. It is recommended
that storage temperature should be between –10°C and 40°C
(14°F and 105°F).
Additionally, if the pump is not intended for installation or use
within 18 months or more then refer to Viking Pump or the Viking
Pump authorized distributor for storage recommendations.
2.4 CLEANING
The SL Series pump range is suitable for manual cleaning and
in-line cleaning refer to section 3.4.1.
The mechanical seals are mounted directly behind the rotor
and are designed and to minimize product entrapment and
maximize the effects of cleaning.
This strategic positioning of the mechanical seals, combined
with their ease of access provides an arrangement that can be
more effectively cleaned by both manual and in-line cleaning
procedures.
Whenever the pump head is dismantled, and at regular intervals
as determined by local operating conditions and veried
cleaning procedures, including installations where the pump
is only operated using n-line cleaning procedures, the areas
behind the rotor case adjacent to the mechanical seals and the
SECTION TSM 288 ISSUE A PAGE 3 OF 36
seals/area behind the rotor retainers including the threads in
the shafts should be inspected for seal deterioration or product
contamination. If any is found then the pump head should be
fully disassembled, cleaned and sanitized using a combination
of appropriate cleaning solutions and brushes and new seals
installed. Refer to Section 5 for seal assembly instructions.
It is recommended that the exterior of the pump be cleaned
periodically with a non-aggressive, non-abrasive cleaning
solution.
2.5 PUMP MODEL DESIGNATION
The designations of pump models are as follows:
SLAS SLBS SLCS SLDS SLES SLFS SLGS
SLAL SLBL SLCL SLDL SLEL SLFL SLGL
This information, together with the pump serial number, should
be provided when requesting additional information on the
pump or when ordering spare parts. The pump serial number
is stamped on the pump nameplate and the casing, (refer to
section 2.7, Figures 3 and 4).
For the maximum operating pressures, temperatures and
speeds refer to section 3.3, Figure 7.
2.6 ATEX INFORMATION PLATE
2.7 PUMP MODEL AND SERIAL
NUMBER
Should you require any information regarding your SL Series
rotary lobe pump contact Viking Pump or your Viking Pump
(distributor, providing the pump model and serial number as
stated on the pump nameplate, see Figure 3, which is xed to
the bearing housing (see Figure 5 for standard pump build).
Should this be damaged or missing, the pump serial number
is also stamped on opposite corners of the casing, (see
Figure 4).
VIKING P UMP, INC.
A Unit of IDE X Corpora tion
CEDAR FAL LS, IOWA USA
Phone: ( 319) 266-1 741
Fax: (31 9) 273-815 7
FIGURE 1
2.6.1 EQUIPMENT GROUPS &
CATEGORIES
Equipment-groups (Annex I of the EC-Directive 94/9/EC)
Group I
(mines, mine gas & dust)
Category M Category 1 Category 2 Category 3
1 2
for equipment
providing a
very high level
of protection
when
endangered by
an explosive
atmosphere
for equipment
providing a
high level of
protection when
likely to
be endangered
by an explosive
atmosphere
(gas)
(Zone 0)
for equipment providing
a very high level of
protection when used
in areas where an
explosive atmosphere
is very likely to occur
(other explosive atmospheres gas/dust)
G
D
(dust)
(Zone 20)
FIGURE 2
Group II
G
(gas)
(Zone 1)
for equipment providing
a high level of
protection when used
in areas where an
explosive atmosphere
is likely to occur
D
(dust)
(Zone 21)
G
(gas)
(Zone 2)
for equipment providing
a normal level of
protection when used
in areas where an
explosive atmosphere
is less likely to occur
D
(dust)
(Zone 22)
Figure 3
Nameplate
EG. 123456/A/04
FIGURE 4
SECTION TSM 288 ISSUE A PAGE 4 OF 36
2.8 STANDARD PUMP
COMPONENT TERMS
FIGURE 5
3.0 GENERAL
3.1 SL SERIES PUMPING
PRINCIPLE
The pumping action of the rotary lobe pump principle is
generated by the contra-rotation of two pumping elements
(rotors) within a chamber (casing) see Figure 6.
The rotors are located on shafts that in turn are held within a
bearing housing mounted to the back of the casing. The shaft
assemblies comprise of, the shaft support bearings and the
timing gears. The gears transfer the energy from the drive
shaft to the driven shaft, synchronizing the rotors such that
they rotate without contact with each other.
As the rotors pass the suction port, Figure 6a, the cavity
increases creating a pressure decrease, which induces the
pumped medium to ow into the casing.
The pumped medium is carried around the casing by the
rotors, Figure 6b and 6c, to the discharge side of the pump,
Figure 6d. Here the cavity decreases and the pumped medium
is discharged from the casing, Figure 6e.
For pump component terms see Figure 5.
3.2 ROTARY LOBE PUMP
PRINCIPLE
6a 6b 6c 6d 6e
FLOW
FIGURE 6
3.3 SL SERIES PUMP OPERATING
PARAMETERS
The maximum pressure and speed operating parameters are
given in Figure 7, page 6. In practice these may be limited due
to the nature of the product to be pumped and/or design of the
system in which the pump is to be installed. Consult Viking
Pump or your distributor for assistance.
WARNING
If the system or product characteristics are to be changed
from the original application for which the pump was
selected, Viking Pump or their authorized distributor should
be consulted to ensure the pump is suitable for the new
application.
The pump should not be subjected to sudden temperature
changes to avoid the risk of damage from sudden
expansion/contraction of components. Care should be
taken when selecting pumps for handling liquids containing
abrasive particles as these may cause wear of pump head
components. For advice or assistance contact your Viking
Pump distributor.
SECTION TSM 288 ISSUE A PAGE 5 OF 36
10.0 Meters (32.8 Feet) Water Column
Suction Lift
Or Vac u um
Atmospheric
Pressure
Suction
Head
NPSH
Available
Suction Line
Friction Loss
Vapour
Pressure
NPSH
Available
Suction Line
Friction Loss
Vapour
Pressure
For Suc tion Lift
Or Vacuum
Conditions.
For Cond i tions
With Positive
Suction Head.
Atmospheric
Vacuum
Theoretical
Pump
Series
SLAS 0.039 0.86 1.03 19 3/4” 15 218 1400 150 300
SLAL 0.059 1.30 1.56 25 1” 10 145 1400 150 300
SLBS 0.081 1.78 2.14 25 1” 15 218 1200 150 300
SLBL 0.122 2.68 3.22 38 1 1/2” 10 145 1200 150 300
SLCS 0.169 3.72 4.46 38 1 1/2” 15 218 1200 150 300
SLCL 0.254 5.59 6.71 50 2” 10 145 1200 150 300
SLDS 0.352 7.74 9.30 38 1 1/2” 15 218 1000 150 300
SLDL 0.528 11.61 13.95 50 2” 10 145 1000 150 300
SLES 0.732 16.10 19.34 50 2” 15 218 800 150 300
SLEL 1.099 24.18 29.03 76 3” 10 145 800 150 300
SLFS 1.524 33.52 40.26 76 3” 15 218 600 150 300
SLFL 2.285 50.26 60.36 101 4” 10 145 600 150 300
SLGS 3.17 69.73 83.74 101 4” 15 218 600 150 300
SLGL 4.754 104.58 125.59 152 6” 10 145 600 150 300
SLHS 6.4 140.78 169.07 152 6” 15 218 600 150 300
Displacement
Imp. Gal
Liter
/rev
/100 rev
US gal
/100 rev
Nominal
Connection
Size
mm in. bar psi
Max Diff.
Pressure
FIGURE 7
3.4 SYSTEM DESIGN AND
INSTALLATION
When incorporating any pump into a system it is considered
good practice to minimize piping runs and the number of pipe
ttings (tees, unions, bends etc.) and restrictions. Particular
care should be taken in designing the suction line, which
should be as short and straight as possible with a minimum of
pipe ttings to minimize restricting product ow to the pump.
The following should be considered at the design stage of any
system.
Be sure ample room is provided around the pump
to allow for:
• Access to the pump and drive for routine
inspection and maintenance, i.e. to remove
pump head and rotors.
• Ventilation of the drive to prevent over
heating.
The exterior of the pump unit may exceed 68°C
(154°F); Appropriate measures must be taken to
warn or protect operators.
The pump must not be used to support piping.
All piping to and from the pump unit must be
independently supported. Failure to observe
this may distort the pump head components
or assembly and cause serious consequential
damage to the pump.
Valves should be provided adjacent to the pump
suction and discharge connections to allow the
pump to be isolated from the system for routine
inspection and maintenance.
Rotary lobe pumps are of the positive displacement
type and therefore an overload protection device
must be provided. This can take the form of:
• An in-line pressure relief system, i.e. external
to the pump.
• Incorporation of a torque-limiting device in
drive system.
It is recommended that all piping and associated
equipment from the tank to the discharge point
is thoroughly cleaned before installation of the
pump to avoid the possibility of debris entering
the pump and causing damage.
!
!
WARNING
!
WARNING
SECTION TSM 288 ISSUE A PAGE 6 OF 36
Max
Speed
/min
rev
Max
Temp
°C °F
the
WARNING
Pressure gauges should be installed adjacent
to the pump suction and discharge connections
such that system pressures can be monitored.
These gauges will provide a clear indication of
changes in operating conditions and where a
relief valve is incorporated in the system, will be
necessary for setting and checking the functioning
of the valve.
WARNING
It is imperative that the suction condition at the
pump inlet meets the Net Positive Suction Head
required (NPSHr) by the pump. Failure to observe
this could cause cavitation, resulting in noisy
operation, reduction in ow rate and mechanical
damage to the pump and associated equipment.
WARNING
The Net Positive Suction Head available (NPSHa)
from the system must always exceed the Net
Positive Suction Head required (NPSHr) by the
pump.
Observing the following general guidelines should ensure the
best possible suction condition is created.
• Suction piping is at least the same diameter as the pump
connections.
• The length of suction piping is kept to the absolute
minimum.
• The minimum number of bends, tees and pipework
restrictions are used.
• Calculations to determine system NPSHa are carried out for
the worst condition see below.
Should advice on pump or system NPSH characteristics be
required contact the factory or their authorized distributor.
FIGURE 8
Where motor mounted options are to be installed follow the
manufactures recommended guidelines. However, when
installing a pump complete with base and drive, the following
guidelines must be observed:
• The preferred drive arrangement for any
lobe pump is in-line direct coupled.
• Flexible couplings must always be
!
!
!
!
and correctly aligned within the limits
recommended by the coupling manufacturer.
To check coupling alignment rotate the shaft
by at least one full revolution and ensure that
the shaft rotates smoothly.
Couplings of a non-exible design must never
be used.
• Couplings must always be enclosed in
guard to prevent contact with rotating parts that
could result in personal injury. Guards should
be of suitable material, and of sufciently rigid
design to prevent contact with rotating parts
under normal operating conditions.
• When installing pump sets in ammable
or explosive environments, or for handling
ammable or explosive materials, special
consideration must be given not only to the
safety aspects of the drive unit enclosure
but also to the materials used for both the
coupling and the guard to eliminate the risk of
explosion.
• Baseplates must be secured to a
surface such that distortion and misalignment
are avoided. Once baseplates are fastened
in position the drive alignment must be rechecked.
• When using electric motor drives, ensure
that the electrical supply is compatible with
the drive and controls and that the method of
wiring is correct for the type of starting required
by the motor i.e. Direct On Line, or other similar
method. Ensure all components are correctly
grounded.
rotary
incorporated
a suitable
at level
3.4.1 INSTALLATION WITH IN-LINE
CLEANING SYSTEMS
The SL Series range has been designed to be effectively
cleaned by procedures recommended for in-line cleaning of
process plant. To assist in maximizing the effectiveness of
cleaning within the pump head it is recommended that during
the cleaning cycle a ow rate equivalent to a velocity of 1.5
metres per second (3.3 feet per second); in a pipe of equal
diameter to the rotor case connections is achieved. With a
differential pressure of 2 to 3 bar (30 to 45 psi) being developed
across the pump head
For applications where maximum drainage of the pump head is
required, and / or where in-line cleaning is employed, the pump
ideally should be mounted with the rotor case connections in
the vertical orientation. A procedure must be determined to
ensure that the pump is effectively cleaned. It is recommended
that this cycle would typically include a combination of some
or all of the following: Acidic or Caustic based Detergents,
‘Sanitizers’, Disinfectants and Water rinses. These must
be appropriate to both the products being handled and the
materials of construction of the pump.
3.5 START UP PROCEDURE
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
• Check that all piping and associated equipment
are clean and free from debris and that all pipe
connections are secure and leak free.
• For pumps installed with ushed product
check that all auxiliary services are in place
and connected and provide sufcient ow and
pressure for ushing purposes
• Ensure lubrication is provided for both
and drive. SL Series pumps are shipped pre-
lled with grease, refer to section 6.4 grease
capacities and grades.
• If an external relief valve is incorporated
system check that it is set correctly. For start
up purposes it is considered good practice
to set the relief valve lower than the system
design pressure. On completion of start up the
relief valve should be set for the application.
The required setting should never exceed the
lower of either the pumps maximum pressure
rating or the system design pressure. For
setting integral relief valves, refer to sections
3.8.1 and 3.8.2.
• Ensure both suction and discharge valves
are fully open, and pipe work is free from
all obstructions. SL Series pumps are of
the positive displacement type and should
therefore never be operated against a closed
valve as this would result in pressure overload,
resulting in damage to the pump and possibly
the system.
• Ensure rotation of the drive shaft is correct
the direction of ow required see Figure 9.
• Ensure product is available in the tank
starting pump. This is very important for pumps
installed with un-ushed product seals, as
these sealing arrangements must never be
allowed to run dry.
• Before beginning operation it is considered
good practice to momentarily start/stop the
pump to check the direction of rotation and
ensure that the pump is free of obstructions.
Once this has been carried out, begin
operation keeping a visual check on suction
and discharge pressure gauges and monitor
pump temperature and power absorbed where
possible.
ROTATION
DISCHARGE SUCTIONSUCTION
FIGURE 9
ROTATION
seals
pump
in the
for
before
SECTION TSM 288 ISSUE A PAGE 7 OF 36
3.6 SHUTDOWN PROCEDURE
After shutting the pump down close both the
!
suction and discharge valves and ensure that the
necessary safety precautions are taken:
• The prime mover power source has been
isolated.
• If installed, the pneumatically
relief valve has been depressurized.
• If installed, ushed product seal auxiliary
services have been isolated and depressurized.
• Pump head and piping have been drained
purged.
operated integral
and
3.7 ROUTINE MAINTENANCE
• SL Series pumps are shipped fully lubricated with a lithium
based extreme pressure lubricant suitable for sealed for
life units.
• For lubricant capacities refer to section 6.4.
3.8 INTEGRAL PRESSURE RELIEF
VALVES
See Figures 10, 11, 12, 13, 14, and 15.
Most models in the SL Series series can be supplied with
integral pressure relief valves with both spring and air loaded
versions available. The function of the valves can be further
enhanced with the option of manual or airlift override offering
particular benets where in-line cleaning is employed. Valves
incorporating this option can be opened to regulate the volume
of the cleaning media within the pump chamber thereby
avoiding the need for manual cleaning or external by-pass.
Where the pump is mounted onto a portable base plate
complete with motor and drive to be used as a mobile set, it
is strongly recommended that a integral pressure relief valve
is installed.
The SL Series integral pressure relief valves available include:
Spring Loaded - see Figure 10, 11, 12, & 13.
Valve can be set to required pressure relief setting.
Spring Loaded with Manual Lift - see Figure 11.
Valve can be set to required pressure relief setting. Manual lift
override can be used to open valve without disturbing pressure
relief setting.
Spring loaded with airlift - see Figure 13.
Valve can be set to required pressure relief setting. Airlift
override, which operates on an air supply of up to 7 Bar (105
psi) depending on pressure relief setting, can be used to open
valve without disturbing pressure relief setting.
Air loaded with airlift - see Figure 14.
Valve, which operates on an air supply of up to 7 Bar (100 psi)
for SLA - E, and 10 Bar (145 psi) for SLF, can be set to required
pressure relief setting. Airlift override, which operates on an air
supply of up to 7 Bar (100 psi) for SLA - E and 10 Bar (145 psi)
for SLF, depending on pressure relief setting, can be used to
open valve without disturbing pressure relief setting.
Air actuated relief valves can be operated remotely and
interfaced with other elements of the system or process
control.
Integral pressure relief valves are normally used to protect the
pump from the effects of increases in system pressure caused,
for example, by a restricted or closed discharge line. In
response to a pressure increase the valve opens and internally
circulates the pumped media within the pump chamber.
WARNING
If the pump on which the valve is installed is to be installed
in either a pressurized system or one incorporating a vessel
under vacuum, the application of the valve should be referred
to Viking Pump or their authorized distributor.
The selection, setting and application of integral relief valves
is inuenced by the viscosity and nature of the pumped media,
the pump operating speed and the required pressure relief
setting and mode of operation. For these reasons, and to cover
the diverse range of products, the conditions under which they
are pumped, and application demands, it is not practical to
factory set integral relief valves. The setting of the valve should
be carried out on site under the proposed duty conditions for
which the pump and valve were selected.
!
When the valve opens, because the volume
of uid circulating is relatively small, the
temperature of the uid in the pump chamber
may rise if the pump continues to operate for
an extended period. In severe cases this may
result in temperatures in excess of the pumps
operating limits or vaporisation of the uid, both
of which should be avoided. For these reasons
when the valve is activated the cause of the
system pressure increase should be eliminated
as continuous operation of the pump with the
valve open is not recommended and may cause
severe damage to the pump.
Before beginning the relief valve setting procedure
the pump should be installed, (see section 3.4)
with a pressure gauge in the discharge line
adjacent to the pump discharge port.
3.8.1 SETTING AND OPERATING
SPRING LOADED VALVES
See Figures 10, 11, 12 and 13.
• Remove cover (108). For integral relief valve with manual
lift, see Figure 11; rst remove nut (129) and hand wheel
(111).
• Loosen nut (107) using a pry bar in the holes
!
• Start pump, refer to section 3.5.
• Screw in nut (107) using pry bar in holes provided until
required pressure relief setting is reached.
WARNING
• Reinstall cover (108). For integral relief valve with manual
lift, see Figure 11; reinstall hand wheel (111) and nut (129).
• The relief valve is now set.
provided, to relieve spring compression. For
integral relief valve with airlift, see Figure 13,
the air cylinder must be exhausted prior to
unscrewing the nut (107).
NOTE: Care should be taken not to exceed the
lower of either the pumps maximum pressure
rating or the system design pressure.
SECTION TSM 288 ISSUE A PAGE 8 OF 36
For Integral Relief Valve with Manual Lift - see Figure 11.
• To operate the manual lift, turn the hand wheel (111)
clockwise, which will lift the valve head (102/128). To
resume normal operation turn the hand wheel (111)
counter-clockwise.
For Integral Relief Valve with airlift - see Figure 13.
• To actuate the air lift connect an air supply not exceeding
Bar for SLA -E and 10 Bar for SLF to the cylinder (123) which
will lift the valve head (112). To resume normal relief valve
operation, exhaust the Cylinder (123).
3.8.2 SETTING AND OPERATING AIR
LOADED VALVE
See Figure 14.
• Connect an air supply, via a regulating valve to the relief
valve connection A in the cylinder (114). Do not turn on the
air supply.
• Start the pump, refer to section 3.5.
• Using the regulating valve gradually increase the air
until required pressure relief setting is reached. The air
pressure must not exceed 7 Bar SLA - E and 10 Bar SLF.
• The relief valve is now set.
WARNING
NOTE: Care should be taken not to exceed the lower of
either the pumps maximum pressure rating or the system
design pressure.
To use the air lift system the regulated air supply must be
•
routed through a change over valve in order to transfer
air from the relief valve load air chamber, connection A,
to the lift air chamber, connection B while depressurizing
the load chamber and vice versa. The change over valve
will actuate the air lift which will lift when the air supply is
diverted to connection B, and will close, restoring normal
relief valve operation, when the air supply is diverted back
to connection A.
• SLF Only - If the valve assembly is
disassembled, e.g. for maintenance or
repair, it is necessary to apply a thread
locking compound (Loctite 270 or similar)
to the piston retaining screw (120).
pressure
Spring Loaded Integral Pressure Relief Valve
SLA – E Typical.
7
FIGURE 10
Spring Loaded Integral Pressure Relief Valve with Manual Lift
SLA - E Typical.
108
102
128
108
107
129
! !
DANGER !
Under no circumstances should any
attempt be made to dismantle a pressure
relief valve which has not had the spring
pressure relieved, is still connected to
a pressurized air supply, or is mounted
on a pump that is operating. Serious
personal injury or pump damage may
occur.
107
111
FIGURE 11
SECTION TSM 288 ISSUE A PAGE 9 OF 36
Spring Loaded Integral Pressure Relief Valve
SLF Typical.
101
Air Loaded Integral Pressure Relief Valve with Airlift
SLA – E Typical.
B A
114114
112
131
110A
109
110A
127
106
126
108
107
FIGURE 14
Air Loaded Integral Pressure Relief Valve with Airlift
SLF Typical
101
114
118
121
112
120
FIGURE 12
Spring Loaded Integral Pressure Relief Valve with Airlift
SLA – E Typical.
123
108
112
107
FIGURE 13
103A
103B
125
FIGURE 15
117
119
117
116
122
SECTION TSM 288 ISSUE A PAGE 10 OF 36
3.9 RECTANGULAR INLET
SLAS SLAL SLBS SLBL SLCS SLCL SLDS SLDL SLES SLEL SLFS SLFL SLGS SLGL
B 64 64 64 64 80 80 110 110 138 138 156 156 188 188
C 6 6 8 8 9 9 11 11 11 11 11 11 11 11
D 11.5 20 15 27 21 35 23 42 34 58 56 90 96 149
E 5 5 5 5 8 8 8 8 8 8 8 8 8 8
G
20H 11.75 11.75 6 7 7 9 9 10 12 10 10 15 15 20
K 2 4 4 4 4 4 4 4 4 4 4 4 4 4
M 8 8 10 10 10 10 12 12 14 14 18 18 18 18
Q 45 45 60 60 66.5 66.5 89 89 117 117 132 132 149 149
80.2 80.2 86.2 86.2 102.2 102.2 140.3 140.3 188.3 188.3 216.3 216.3 248.3 248.3
79.8 79.8 85.8 85.8 101.8 101.8 139.7 139.7 187.7 187.7 215.7 215.7 247.7 247.7
J N/A
L M6 M6 M8 M8 M8 M8 M10 M10 M12 M12 M16 M16 M16 M16
V 3 3 3 3 3 3 3 3 3 3 3 3 3 3
X 134 137 137 141 144 150 152 154 156 158 160 163 167 173
20.2 17.2 29.2 21.2 35.2 25.3 40.3 36.3 60.3 48.3 82.3 78.3 131.3
19.8 16.8 28.8 20.8 34.8 24.7 39.7 35.7 59.7 47.7 81.7 77.7 130.7
FIGURE 16
3.9.1 JACKETED HEAD
SLAS SLAL SLBS SLBL SLCS SLCL SLDS SLDL SLES SLEL SLFS SLFL SLGS SLGL
A 43 46.5 54 52 62 66 66
B 90 110 150 210 260 300 370
C 67.3 76 83.5 95.5 65.9 79.9 77 96 67.2 91.2 102.5 136.5 154 207
D 1/4” BSP 1/2” BSP
SECTION TSM 288 ISSUE A PAGE 11 OF 36
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