Masdaf UKM-S Series User manual

Revision No: 02 July/2018
Self Priming Centrifugal Pumps
UKM-S SERIES
OPERATING MANUAL

EC DECLARATION OF CONFORMITY
AT UYGUNLUK BEYANI
Manufacturer / İmalatçı
: MAS DAF MAKİNA SANAYİ A.Ş.
Address / Adres
: Aydınlı Mah. Birlik OSB. 1.No’lu Cadde No:17 Tuzla - İSTANBUL / TÜRKİYE
Name and address of the person authorised to
compile the technical file
Teknik Dosyayı Derleyen Yetkili Kişi ve Adresi
Vahdettin YIRTMAÇ
Aydınlı Mah. Birlik OSB. 1.No’lu Cadde No:17
Tuzla - İSTANBUL / TÜRKİYE
The undersigned Company certifies under its sole responsibility that the item of equipment specified below satisfies the
requirements of the mainly Machinery Directive 2006/42/EC which is apply to it.
The item of equipment identified below has been subject to internal manufacturing checks with monitoring of the final assessment
by MAS DAF MAKİNA SANAYİ A.Ş.
Aşağıda tanımlanmış olan ürünler için Makine Emniyeti yönetmeliği 2006 / 42 / AT’ nin uygulanabilen gerekliliklerinin yerine
getirildiğini ve sorumluluğun alınmış olunduğunu beyan ederiz.
Aşağıda tanımlanan ürünler içüretim kontrollerine bağlı olarak MAS DAF MAKİNA SANAYİ A.Ş. tarafından kontrol
edilmiştir.
Equipment / Ürün
: Self Priming, Single Stage Centrifugal Pumps
Kendinden Emişli, Tek Kademeli Atıksu Pompaları
Seri / Model-Tip
: UKM-S Series –UKM-S Serisi
For pumps supplied with drivers/ Elektrikli Pompa Üniteleri
Related Directives / Yönetmelikler
2006/42/EC Machinery Directive / 2006/42/AT Makine Emniyeti Yönetmeliği
2014/35/EU Low Voltage Directive / 2014/35/AB Alçak Gerilim Yönetmeliği
2014/30/EU Electromagnetic Compatibility Directive / 2014/30/AB Elektromanyetik Uyumluluk Yönetmeliği
Regulations applied acc. to harmonize standards / Uygulanan Uyumlaştırılmış Standartlar
TS EN ISO 12100:2010, TS EN 809+A1, TS EN 60204-1:2011.
We hereby declare that this equipment is intended to be incorporated into, or assembled with other machinery to constitute relevant
machinery to comply with essential health and safety requirements of Directive The machinery covered by this declaration must
not be put into service until the relevant machinery into which it is to be incorporated has been declared in conformity with
provisions of the directive.
Ekipman, uygun bir makina oluşturmak amacıyla diğer ekipmanlar ile birleştirilirken ya da monte edilirken gerekli sağlık ve
güvenlik yönetmeliklerine uyulması gerekmektedir.
Bu bildiri kapsamında yönetmelikte belirtilen bütün hükümler yerine getirilmeden makinanın devreye alınmaması gerekmektedir.
Place and date of issue / Yer ve Tarih
: İstanbul, 02.06.2014
Name and position of authorized person
Yetkili Kişinin Adı ve Görevi
: Vahdettin YIRTMAÇ
General Manager / Genel Müdür
Signature of authorized person
Yetkili Kişinin İmzası
:

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TABLE OF CONTENTS Page No
Introduction 1
1.Important Safety Precautions 1
2.General 1
3.Safe Operating Conditions 2
4.Technical Information 2
5.Transport and Storage 3
6.Assembly/Installation 4
6.1.Installation 4
6.2.Type of Connection 4
6.3.Foundation 4
6.4.Coupling Alignment 4
6.5.Piping 5
6.6.Motor Connection for Applications with Electric Motor 7
7.Commissioning, Start up and Operating 8
7.1.Preparations Before Start up 8
7.2.Checking The Direction of Rotation 8
7.3.Start up Procedure 8
8.Maintenance 9
8.1.The Checks During the Operation 9
8.2.Pump and Seal Disassembly and Reassembly 9
8.3.Coupling 11
8.4.Drive 11
8.5.Auxiliary Components 12
8.6.Service 12
8.7.Spare Parts 12
9.Noise Level and Vibration 12
10. Possible Failures, Causes, Solutions 13
11. UKM-S Pump Dimensions Table and Weight 14
12. Tightening Torques 14
13. UKM-S Sectional Drawing and Part List 15
14. UKM-50 Sectional Drawing and Part List 17
15. Rotating Region of UKM-S Self-Priming Centrifugal Pump 18
16. Automatic Air Release Valve Sectional Drawing and Parts List 18
17. UKM-S Drawing for Dismantling 19
18. Figure List 20
19. Table List 20
INTRODUCTION
This manual contains instructions for the installation, operation and
maintenance of the UKM-S type self-priming waste water pumps of
MAS DAF MAKINA SANAYI A.Ş.
Please read carefully this manual and apply all the instructions to
operate pumps without problems. Pumps shall be used for their
intended duties. In this manual, there are information on operating
conditions, installation, starting-up, settings and main controls of
pumps.
These operating and maintenance instructions contain MAS DAF
MAKINA SANAYI A.Ş.` s suggestions. The special operating and
maintenance information of the plumbing that a pump is fitted to is not
considered in these instructions. This information must be given by the
plumbing constructors only.
Please refer to instructions of plumbing constructors.
Please pay attention to the warnings in this manual and ensure that it is
read before the installation-start up process. MAS DAF MAKINA
SANAYI A.Ş. is not responsible for the accidents resulting from
negligence.
If you cannot find an answer to your questions in this manual, it is
suggested that you contact MAS DAF MAKINA SANAYI A.Ş. Please
inform us about the rated value and especially the serial number of the
pump when you get in contact for help.
The safety instructions in this manual cover the current national
accident protection regulations. Beside all of these, an operation, work
and safety measure imposed by the costumer has to be applied.
The Signs Used in This Operation Manual
Read the instructions carefully in this operating
manual and keep it for your future reference.
Warning sign against the electrical risks
Sign for the operator’s safety.
1. IMPORTANT SAFETY PRECAUTIONS
In order to minimize the accidents during the mounting and putting into
service of the pump, the following rules have to be applied:
1. Do not work without taking safety measures relevant to equipment.
Cable, mask and safety band must be used when necessary.
2. Be sure there is adequate amount of oxygen and there is no toxic
gaseous around.
3. Before using welding or any electrical equipment make sure that
there is no risk of explosion.
4. Check the cleanliness of the area to take care of your help. (Dust,
smoke, etc.)
5. Do keep in mind that there is a risk of having accidents related to
electricity.
6. Do not lift the pump before you check the transport equipment.
7. Be sure you have a by-pass line.
8. Use helmet, eye glasses and protective shoes for your safety
9. Place a protective barrier around the pump within the necessary
safety area.
10. Dust, liquids and gaseous that may cause overheating, short circuit,
corrosion and fire must be kept away from the pump unit.
11. By checking the noise level of the pump unit, necessary measures to
avoid noisy operation of the pump that can have harmful effects on
the personnel and environment.
12. Be careful about the direction of transport and storage.
13. Cover appropriately the moving parts to avoid possible injury of the
personnel. Mount the coupling guard and belting before starting-up
the pump.
14. All the electrical and electronic applications must be performed by
authorized person conforming EN60204-1 and /or domestic
instructions.
15. Protect the electrical equipment and motor against overloading.
16. If flammable and explosive liquids are pumped, ground connection of
electricity should be carried out properly.
17. Do not expose the pump unit to sudden temperature variations
18. All personnel who work with the waste water system need to be
vaccinated in case of contagious diseases.
19. If the pump contains hazardous liquids, one must use protective
helmet against the risk of splatter. One also must accumulate the
liquid in a proper container against any risk of leakage.
All Other Health and Safety Rules, Laws and
Regulations Must Be Applied
2. GENERAL
2.1.Definition of Pump and Usage Areas
UKM-S series pumps are self-priming waste water pumps.
They are used in,
•Domestic and industrial raw sewer systems.
•Sewer purification systems.
•Pumping of muddy fluids and fluids which contain solid particles.
•Factory waste water systems.
•All kinds of drainage and discharge processes.
CAUTION
This pump is designed for handling mild industrial corrosives, mud
or slurries containing large entrained solids. Do not attempt to pump
volatile, corrosive, or flammable materials which may damage the
pump or endanger personnel as a result of pump failure.
Technical specifications of UKM-S type pumps
Suction Flange: 2” - 10”
Discharge Flange: 2” - 10”
Capacity: 50–730 m3/h
Hm: 4–40 mwc
Speed: 650–2900 rpm

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Figure 1: Pump Label
2.2.Performance Information
Actual performance of the pump can be obtained from the order page
and/or from the test report. This information is given on the pump label.
The performance curves given in the catalog are valid for water whose
density and viscosity are ρ=1 kg/dm3and ν=1 cst. respectively. For
those liquids whose densities and viscosities are different from those of
water, please consult with MAS DAF MAKINA SANAYI A.Ş. since the
performance curves vary with density and viscosity
CAUTION
Do not operate the pump with a motor that has a different power
except for the given catalog and label values.
The pump is not to be operated at off-design point given in the order and
supplied from the firm.
It is necessary to ensure that the instructions are obeyed for the safe
running of the pump.
2.3.Warranty Conditions
The entire products in our selling program are warranted by MAS DAF
MAKINA SANAYİ A.Ş.
The warranty conditions will only be valid when all the instructions about
installation and start-up operations of the pump unit are taken into
account.
2.4.Test
All Pumps are dispatched for sale when all the performance and pressure
tests are completed. Proper assurance of material and fault-free
operation of pumps whose performance tests are made is under the
warrantyof MAS DAF MAKINA SANAYI A.Ş.
2.5.Pressure Limit
Pressure at the discharge flange must not exceed 10 Bar. A special order
is necessary for applications with higher pressures.
3. SAFE OPERATING CONDITIONS
This manual contains main safety instructions for the installation,
operation and maintenance. It must be read by the personnel who are
responsible for installation and operation. This manual should always be
kept near the installation location. It is important to comply with safety
precautions stated in page 1 along with the general safety instructions as
well as preventive measures repeated in other sections of this manual.
3.1.Training of Personnel
Installation, operation and maintenance personnel must have necessary
knowledge in order to accomplish the given job. The responsibility,
adequacies and controlling duties of such personnel must be determined
by the costumer. It has to be certain that these personnel comprehend
totally the content of the operating manual.
If the personnel do not have enough knowledge, required training must
be given by the costumer. If training support is needed by the costumer,
it will be provided by the manufacturer/seller.
CAUTION
Untrained personnel and unwillingness to comply with safety instructions
may be risky for both machine and environment. MAS DAF MAKINA
SANAYI A.Ş. is not responsible for this kind of damages.
3.2.Hazardous Conditions That May Occur When One does not
Comply with the Safety Instructions
Incompliance with safety regulations may put the personnel, the
environment and the machine in danger and thus may cause damages.
Incompliance with safety regulations may give rise to situations listed
below.
Important operational functions of the factory may stop.
Maintenance may get difficult.
One may get injured by electrical, mechanical or chemical hazards.
3.3.Safety Measures for Operator
Dangerous, hot or cold components in the pump area must be covered so
that one cannot touch them.
Moving components of the pump must be covered so that one cannot
touch them. Those covers must not be dismounted while the pump is
running. Dangers that results from electrical connections must be
removed. To get more information about this subject, you can refer to
domestic electrical instructions.
3.4.Safety Measures for Maintenance and Installation
The costumer must assure that all maintenance, check and installment
tasks are performed by qualified personnel. Repair work must only be
performed while the machine is not running.
The pump and its auxiliary system must be cleaned thoroughly if it
contains hazardous liquids. At the end of the repair work, all safety and
protective equipment must be re-installed.
3.5.Spare Parts Replacement
Replacement of spare parts and all modifications must be done after
contacting with the manufacturer. Spare parts and accessories certified
by the manufacturer are important for the safe operation of the system.
Notice: MAS DAF MAKINA SANAYI A.Ş. is not responsible from the
usage of improper spare parts.
4. TECHNICAL INFORMATION
4.1.Design
Since they are self-priming, the UKM-S type pumps are easy to operate.
After submerging the suction pipe in water, depending on the suction
head they operate approximately in 1 minute.
Due to the cover on the front side of the casing, the maintenance and the
cleansing of the pump are quite easy.
Apart from the fact that it can be operated by diesel or electrical motor
drives; it can as well be driven by belting at the desired rpm.

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4.1.1.Impeller
The impellers are designed such that they have 2 blades, with wide
cross-sectional areas and in the form of open impeller which allow the
passage of 18-76 mm diameter solid particles.
Pump Type
Diameter of Solid Particles
UKM-S 2”x2”
44,5 mm (1,75”)
UKM-S 3”x3”
63,5 mm (2,5”)
UKM-S 4”x4”
76 mm (3”)
UKM-S 6”x6”
76 mm (3”)
UKM-S 8”x8”
76 mm (3”)
UKM-S 10”x10”
76 mm (3”)
UKM-50
18 mm (0,75”)
Table 1: Solid Particles
4.1.2.Bearing and Lubrication
Single or double ball bearings are used both motor and impeller side
bearings. These bearings are lubricated during installation in the factory.
Oil indicator must be monitored at regular intervals.
Pump Type
Bearings
at the
impeller side
Bearings
at the
motor side
UKM-S 2”x2”
6208 (SRBB)
6208 (SRBB)
UKM-S 3”x3”
6208 (SRBB)
6208 (SRBB)
UKM-S 4”x4”
6308 (SRBB)
3308 (DRBB)
UKM-S 6”x6”
6308 (SRBB)
3308 (DRBB)
UKM-S 8”x8”
3310 (DRBB)
3311 (DRBB)
UKM-S 10”x10”
3310 (DRBB)
3311 (DRBB)
SRBB: Single Row Ball Bearing DRBB: Double Row Ball Bearing
* UKM-50 series use bearings of the driver.
Table 2: Bearing Types
4.1.3.Seals
In UKM-S type pumps, silicon carbide (SiC) surface mechanical seal
(Burgmann MG1) are used. Seal region is filled with liquid oil.
4.2. Construction of Pump Group
4.2.1. Drive
TEFC (Totally Enclosed Fan Cooled) 3 phase, squirrel caged, IM
1001B3 type electrical or diesel motor (along with belting if needed) which
complies with DIN EN 60034 IEC is used to drive the pump in proper
speed and power.
Specifications of electrical motor;
Isolation class : F
Protection class : IP 54-IP 55
Frequency : 50 Hz
Running type : S1
Start up type : Up to 4 kW, 3x380 V (Y)
More than 4 kW, 3x380V (Δ)+(Y/ Δ)
4.2.2.Coupling and Coupling Guard
In applications where the drive is with electrical motor, an elastic shaft
coupling in accordance with DIN 740 and in applications where the drive
is with diesel motor, a special coupling is used. A coupling guard is given
in accordance with EN 294 in case of the pump group includes the
coupling and chassis.
Pump can only be run with a guard in accordance with EN 294
according to safety instructions.
If there is no cover, it is provided by the operator.
4.2.3.Base Plate
It is manufactured from steel plate or U profile steel in accordance with
DIN 24259 in direct coupling applications.
In the case of belting drive, U profile is preferred.
5. TRANSPORT AND STORAGE
Suction, discharge and all auxiliary fittings must be closed during
transport and storage. Dead-end covers must be removed while the pump
unit is being installed.
5.1.Transport
Pump and pump group must be carried safely to the installation location
by lifting equipments.
CAUTION
Current general lifting safety instructions must be applied. Please use a
suspension system shown in figure while you are carrying and lifting the
pump unit. The suspension rings may be broken because of the
excessive load and may result in a damage of the pump. Prefer fabric
cable for suspension.
Figure 2-a: Transport of Diesel Motor Coupled Pump Group
Figure 2-b: Transport of Electrical Motor Coupled Pump Group
Incorrect lifting may damage the pump unit and cause injuries.

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Damages caused in transport
Check the pump when it is delivered to you. Please let us know of there is
any damage.
5.2.Storage
Please keep the unit clean and dry area during storage.
If the pump is out of use for a long time, please consider the instructions
below.
1.If there is water inside the pump, drain it.
2.Clean the pump casing and impeller by jetting clean water for a short
time.
3.Empty water inside the pump casing, suction line and discharge line.
4.Add small amount of antifreeze inside the pump casing if it is not
possible to empty it completely. Rotate the pump shaft by hand to mix
the antifreeze.
5.Add liquid lubricator into the bearing and seal gap up until the level
indicator.
6.Close the suction and discharge exits with gasket.
7.Spray an anti-corrosive into the pump casing.
8.Rotate the pump shaft by hand once in every month, in order to protect
it from freezing and to lubricate the bearings.
6. ASSEMBLY / INSTALLATION
6.1.Installation
In our standard production, the pump and the motor have been installed
in a common base plate.
6.1.1.Location of Installation
Pump will be installed in a location where the control and the
maintenance of the pump are easily made. The pump room should be
suitable for operation of lifting systems such as freight elevator, forklift,
etc.
6.1.2.Location of Installation- Local Ambient Temperature
When the local ambient room temperature exceeds +40oC in a pumping
system, suitable ventilation should be provided in order to remove the
heat dissipated to the environment and supply fresh air.
6.2.Type of Connection
Type of connection depends on the design type and the size of the pump
and the motor, as well as the local installation conditions. Foot-mounted
horizontal pump-motor units have been installed in a common base plate.
6.3.Foundation
6.3.1.General
In applications where a trailor is not used, the pump must be properly
fixed to solidified concrete base plate with studs.
Base plate of the pump must be grouted. The foundation shall be of
concrete or steel framework.
Note: The foundation shall distribute the weight of the pumping group
evenly.
6.3.2.Main Properties of the Steel Framework Bases
Foundations with steel framework shall be designed in such a way that
the base plate is bolted or welded contacting to all area.
CAUTION
If base plate is supported from only four points, pump group will
stay in the middle, causing misalignment of the coupling and
increasing the noise level.
6.3.3.Foundation Properties
The foundation shall be horizontal, flat and clean and shall support all the
weight.
Note: Reinforced concrete bases are constructed from standard concrete
with at least B 25 resistance class.
Figure 3: Typical Concrete Foundations
6.4.Coupling Alignment
6.4.1.General
For a proper operation of a pump group, a good alignment of the coupling
is necessary. Vibration, noise, overheating of the bearings, overcharge
problems can be attributed to the misalignment of coupling or using an
improper coupling.
Flexible coupling does not correct the axial misalignments between
the pump and the motor axes. However, it allows pinpointing the
misalignments.
In order to avoid overheating, vibration, noise and wearing of the
rolling bearings, alignment of the coupling has to be made properly
and checked often.
Do not use a different coupling other than the original type installed
on pumping group.
6.4.2.Method of Coupling Alignment
When the motor moves towards the pump, a gap must be maintained in
order that the two faces of the coupling do not touch each other. The
recommended distance is 3 mm. To check the coupling alignment, a
conical measurement device and a gauge stick are needed.
1.Angular Misalignment (Figure 4)
In order to control the angular misalignment, the distance between the
two halves of the coupling is measured in both horizontal and vertical
planes. Measurements taken at four points shall be in agreement for the
alignment.
2.Parallel Axis Misalignment (Figure 4)
In order to control parallel axis misalignment, a smooth edged
gauge stick is pressed axially over the upper half of the coupling. Then,
the gauge stick is checked for the other half of the coupling. For
alignment, the gauge stick shall be in contact with both of the halves at
the same time. This procedure shall be repeated for four sides of the
coupling. (i.e. top, bottom, left and right sides of the coupling). When all
four sides give reasonably accepted results, alignment of the coupling
has been ensured.

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Install the coupling guard only when the alignment of the coupling is
checked.
Wrong Right
X2>X1>X X2=X1=X
Wrong Right
Figure 4: The Control of the Coupling Alignment in Horizontal and
Vertical Planes
6.4.3.Belt Alignment for Groups Connected with V-Belts
V-belt alignment:
A proper belting alignment increases the life of the system.
Make sure that the pump and motor shafts are connected to each other.
V-belt tension alignment:
V-belts must be placed properly inside pulley grooves.
1.The tension alignment of belts is made by moving the pulley centers
until the correct belt tension is obtained.
2.Belt tension is checked by pushing on it by hand. A belt with normal
tension may deflect 1/20 of the distance between the axes. If it deflects
more than this amount, the belt is considered loose, otherwise it is too
tight.
3.During operation; in a couple of days, the belts are going to be fully
placed inside pulley grooves. It may be necessary to align the belt while
it is slightly curved on one side.
Figure 5: Belt Tension Check
4.Properly tightened belting becomes ready for operation with regular
checks of belt tension.
Figure 6: Misaligned and Aligned Belts
6.4.4.Pump and Motor Mounting (Coupling)
If the coupling of the pump group is to be mounted on site,
the following procedure should be followed
1.Insert the key.
2.Push the coupling halves with a driving apparatus towards the pump
and the motor shafts, until the shaft is fit to snag to the hub of the
coupling. If a driving apparatus is not available, heating coupling halves
(with coupling rubbers off) to an approximately 100 °C may help the
pushing. It is important that axial force is prevented from occurring while
mounting the coupling. Support pump shaft from the impeller side, and
motor shaft from the fan side while mounting the coupling. If necessary,
dismantle the fan cover.
3.Screw the two bolts in coupling hub.
4.Make sure that a suitable spacing is left between the coupling halves
while mounting pump and the rotor.
5.Horizontal pump groups mounted on the base plate or directly mounted
on the base, alignment of the coupling shall be as described in 6.4.2
6.Put into place the coupling guard.
According to the accident prevention regulations, all preventions
and protective devices should be in their intended place and in
operational form.
6.5.Piping
6.5.1.Suction snd Discharge Piping
Pump performance is adversely affected by increase suction lift,
discharge elevation and friction losses. See the performance curve and
operating range to be sure your overall application allows pump to
operate within the safe operation range.
6.5.1.1. Material
Either pipe or hose may be used for suction and discharge lines.
However, the materials must be compatible with liquid being pumped. If
hose is used in suction line, it must be the rigid-wall, reinforced type to
prevent collapse under suction.
6.5.1.2. Line Configuration
Keep suction and discharge lines as straight as possible to minimize
friction losses. Make minimum use of elbows and fittings, which
substantially increase friction losses. If elbows are necessary, use the
long radius type to minimize friction losses.
6.5.1.3. Connections of Pump
Before tightening a connection flange, align it exactly with the pump port.
Never pull a pipe line into place by tightening the flange bolts and/or
couplings.
Lines near the pump must be independently supported to avoid strain on
the pump which could cause excessive vibration, decrease bearing life
and increase shaft and seal wear. If hose-type lines are used, they should
have adequate support to secure them when filled with liquid and under
pressure.
6.5.1.4. Gauges
Most pumps are drilled and tapped for installing discharge pressure and
vacuum suction gauges. If these gauges are desired for pumps that are
not tapped, drill and tape the suction and discharge lines not less than
18” (457.2 mm) from the suction and discharge ports and install the lines.
Installation closer to the pump may result in erratic reading.

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6.5.2.Suction Lines
To avoid air pockets which could affect pump priming, the suction line
must be as short and direct as possible. When operation pumped, if the
line slopes down to the pump at any point along the suction run, air
involves a suction lift, the line must always slope upward to the pump
from the source of the liquid being pockets will be created.
Installing Pipes
Suction line (top wiew)
Suction line (bottom wiew)
Suction flange
Suction flange
Figure 7: Installing Pipes
6.5.2.1. Fittings
Suction lines should be the same size as the pump inlet. If reducers are
used in suction lines, they should be the eccentric type and should be
installed with the flat part of the reducers uppermost to avoid creating air
pockets. Valves are not normally used in suction lines but if a valve is
used, install it with the horizontal to avoid air pocket.
6.5.2.2. Strainer
If a strainer is furnished with the pump, be certain to use it; any spherical
solids which pass through a strainer furnished with the pump will also
pass through the pump itself.
If a strainer is not furnished with the pump, but is installed by pump user,
make certain that the total area of the openings in the strainer is at least
three or four times the cross section of the suction line and that openings
will not permit passage of solids larger than the solids handling capability
of the pump.
6.5.2.3. Sealing
Since even a slight leak will affect priming, head and capacity, especially
when operating with a high suction lift, all connection in the suction line
should be sealed with pipe dope to ensure an airtight seal. Follow the
sealant manufacturer’s recommendations when selecting and applying
the pipe dope. The pipe dope should be compatible with the liquid being
pumped.
6.5.2.4. Suction Lines in Sumps
If a single suction line is installed in a sump, it should be positioned away
from the wall of the sump at a distance equal to 1.5 times the diameter of
the suction line.
If there is a liquid flow from an open pipe into sump, the flow should be
kept away from the suction inlet because the inflow will carry air down into
the sump and air entering the suction line will reduce pump efficiency.
It is necessary to position inflow close to the suction inlet, install a baffle
between the inflow and the suction lines; it must be the rigid-wall,
reinforced type to prevent collapse under suction.
Using piping couplings in the suction lines is not recommended.
Suction inlet at a distance 1.5 times the diameter of the suction pipe. The
baffle will allow entrained air to escape from the liquid before it is drawn
into the suction inlet.
If two suction lines are installed in a single sump, the flow path may
interact, reducing the efficiency of one or both pumps. To avoid this,
position the suction inlet so that they are separated by a distance equal to
at least 3 times the diameter of the suction pipe.
6.5.2.5. Suction Lines in Positioning
The depth of the submergence of the suction line is critical to efficient
pump operation. Figure 7 shows recommended minimum submergence
vs. velocity.
Note: The pipe submergence required may be reduced by installing a
standard pipe increaser fitting at the end of the suction line. The larger
opening size will reduce the inlet velocity. Calculate the required
submergence using the following formula based on the increased
opening size (area or diameter).
Figure 8: Recommended Minimum Suction Line Submergence
vs. Velocity
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6.5.3.Automatic Air Release Valve
The air release valve is going to permit air to escape through the bypass
line and then close automatically when the pump is fully primed and
pumping at full capacity.
Theory of Operation
The cross-sectional view of the air release valve is shown in open valve
position. During the priming process, air from the pump casing flows
through the bypass line and passes through the air release valve to the
wet well.
When the pump is fully primed, flow pressure compresses the spring and
closes the valve. The valve will remain closed, reducing the bypass of
liquid to 3.8 to 19 l/min until the pump losses its prime or stops.

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CAUTION
Some leakage from 3.8 to 19 l/min will occur when the valve is fully
closed. Be sure the bypass line is directed back to the wet well or tank to
prevent hazardous spills.
When the pump shuts down, the spring returns the diaphragm to its
original position. Any solids that may have accumulated in the diaphragm
chamber settle to the bottom and are flushed out during the next priming
cycle.
CAUTION
The valve will remain open if the pump does not reach its designed
capacity or head. Valve closing pressure is dependent upon the
discharge head of the pump at full capacity. The range of the valve
closing pressure is established by the tension rate of the spring.
Valve closing pressure can be further adjusted to the exact system
requirements by moving the spring retaining pin up or down the
plunger rod to increase or decrease tension on the spring.
6.5.3.1.Automatic Air Release Valve Installation
The automatic air release valve must be independently mounted in a
horizontal position and connected to the discharge line of the self-priming
centrifugal pump.
The valve inlet must be installed between the pump discharge port and
the non-pressurized side of the discharge check valve. The valve inlet is
at the large end of the valve body and it is provided with standard 1-inch
pipe thread.
The valve outlet is located at the opposite end of the valve and is also
equipped with standard 1-inch pipe threads. The outlet should be
connected to a bleed line which slopes back to the wet well or sump. The
bleed line must be the same size as the inlet piping or larger. If piping is
used for bleed line, avoid o use of elbows whenever possible.
CAUTION
It is recommended that each air release valve should be fitted with
an independent bleeder line directed back to the wet well. However,
if multiple air release valves are installed in a system, the bleeder
lines may be directed to a common manifold pipe.
6.5.4.Discharge Lines
6.5.4.1. Siphoning
Do not terminate the discharge line at a level lower than of the liquid
being pumped unless a siphon breaker is used in the line. Otherwise, a
siphoning suction causing damage to the pump could result.
6.5.4.2. Valves
If a throttling is desired in the discharge line, use a valve as large as the
largest pipe to minimize friction losses. Never install a throttling valve and
system check valve be installed in the discharge line to protect the pump
from excessive shock pressure and reverse rotation when it is stopped.
CAUTION
If the application involves a high discharge head, gradually close the
discharge throttling valve before stopping the pump.
6.5.4.3. By-pass Lines
Self-priming pumps are not air compressors. During the priming cycle, air
from the suction line must be vented to atmosphere on the discharge
side. If the discharge line is open, this air check valve has been installed
in the discharge line; the discharge side of the pump must be open to the
atmospheric pressure through a by-pass line installed between the pump
discharge and the check valve. A self-priming centrifugal pump will not
prime if there is sufficient static liquid head to hold the discharge check
valve closed.
Note: The by-pass line should be sized so that it does not affect pump
discharge capacity; however the by-pass line should be at least 1” in
diameter to minimize the chance of plugging.
Inflow discharge applications (less than 30 feet or 9 meters), it is
recommended that the by-pass line be run back to the wet well and locate
6” below the water level or cut-off point of the level pump. In some
installation, this by-pass line may be terminated with 180-240 cm in length
1 1/2" hoses. Smoothbore hose, air and liquid vented during the priming
process will then agitate the hose and break up any solids, grease, or
other substances likely to cause clogging.
CAUTION
A by-pass line that is returned to a wet well must be secured against
being drawn into the pump suction inlet.
It is also recommended that pipe unions be installed at each 90˚ elbow in
a by-pass line to ease disassembly and maintenance.
In high discharge head applications (more than 30 feet or 9 m), an
excessive amount of liquid may be by-passed and forced back to the wet
well under the full working pressure of the pump.
If the installation involves a flooded suction such as below - ground lift
station. A pipe union and manual shut –off valve may be installed in the
bleed line to allow service of the valve is installed anywhere in the air
release piping, it must be a full –opening ball type valve to prevent
plugging by solids.
CAUTION
If a manual shut-off valve is installed in a by-pass line, it must not be
left closed during operation. A closed manual shut-off valve may
cause a pump which has lost prime to continue to operate without
reaching prime, causing dangerous overheating and possible
explosive rupture of the pump casing. Personnel could be severely
injured. Allow an over-heated pump to cool before servicing. Do not
remove plates, covers, gauges, or fittings from an overheated pump.
Liquid within the pump can reach boiling temperatures, and vapor
pressure within the pump can cause parts being disengaged to be
ejected with great force. After the pump cools, drain the liquid from
the pump by removing the casing drain plug. Use caution when
removing the casing drain plug. Use caution when removing the
plug to prevent injury to personnel from hot liquid.
6.6.Motor Connection for Applications with Electric Motor
In electric motor coupled UKM-S type pumps, motor must be connected
by an electrical technician according to the connection (switch) diagram.
Local electricity policies have to be applied.
•Electrical connections have to be made by authorized electricians.
•In dismantling the pump, make sure the electricity is cut off before
taking the motor cover out.
•Use the appropriate electrical connection to the motor.
In environments where there is a risk of explosion, prescribed
protective law and regulations shall be applied by competent
authorities.

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6.6.1.Motor Connection Diagram
•Motors requiring high moments at start up shall not be connected star-
delta
•Frequency controlled motors, require high moment at start up and have
to be cooled properly at low speeds. Provide the necessary cooling for
the motors.
Figure 9: Electric Connection Diagram
Electrical circuit
Motor
U (Volt)
230/400 V
400 V
3 x 230 V
Delta
3 x 400 V
Star
Delta
6.6.2.Motor Protection
•Three phased-motor shall be connected to power supply.
•Wait the motor to cool down when thermic protected motor breaks in
circuit due to the overheating. Make sure the motor does not start
automatically until it cools completely
•In order to protect the motor from overcharging and short circuit use a
thermic or thermic-magnetic relay. Adjust this relay to the nominal
current of the motor.
Electrical equipments, terminals and the components of the control
systems may carry electric current even though they are not
operating. They may cause deadly and serious injuries or
irreparable material damages.
7. COMMISSIONING, START UP AND OPERATING
7.1.Preparations Before Start Up
Oil Check: For bearings, non-abrasive, high quality oil such as SAE#30
should be used. UKM-S type pumps are transported filled up with fluid oil.
Nevertheless one should check before start-up if there is oil in the
reservoir.
In normal conditions, every year, the ball bearing must be cleansed from
oil and refilled.
UKM-S 2”x2”
0,7 liter
UKM-S 3”x3”
0,7 liter
UKM-S 4”x4”
0,8 liter
UKM-S 6”x6”
1 liter
UKM-S 8”x8”
1 liter
UKM-S 10”x10”
1 liter
Table 3: The Ball Bearing Reservoir Capacity
Mechanical seal is a component which is subject to replacement when it
is worn out. If fluid comes from the hole on top of the seal bed plug, it is
concluded that the seal is leaking.
UKM-S 2”x2”
0,6 liter
UKM-S 3”x3”
0,6 liter
UKM-S 4”x4”
0,7 liter
UKM-S 6”x6”
0,7 liter
UKM-S 8”x8”
2,7 liter
UKM-S 10”x10”
2,7 liter
Table 4: The Mechanical Seal Reservoir Capacity
Lubrication of Motor Bearing
The lubrication must be performed as it is recommended by the motor
manufacturer.
CAUTION
Do not start your pump dry (WITHOUT WATER).
7.2.Checking The Direction of Rotation
CAUTION
•The direction of rotation is in the clockwise sense when looked from the
motor side (right). The direction of rotation must always be checked
before each operation.
•One should always check the labels which show the direction of rotation
and the direction of fluid flow. If you dismount the coupling protection to
monitor the direction of rotation, do not restart the engine before
remounting the protection.
7.3.Starting the Pump
7.3.1.Priming
This pump is self-priming but the pump should never be operated unless
there is liquid in the pump casing.
CAUTION
Never operate this pump unless there is liquid in the pump casing.
The pump will not prime when dry.
Extend operation of dry pump will destroy the seal assembly.
Add liquid to the pump casing when:
1.The pump is being put into service for the first time.
2.The pump has not been used for a considerable length of time.
3.The liquid in the pump casing has evaporated.
Once the pump casing has been filled the pump will prime and reprime as
necessary.
CAUTION
After filling the pump casing, reinstall and tighten the fill plug. Do
not attempt to operate the pump unless all connecting piping is
securely installed. Otherwise, liquid in the pump forced out under
pressure could cause injury to the personnel.
To fill the pump, remove the pump casing fill cover or fill plug in the top of
the casing and add clean liquid until the casing is filled. Replace the fill
cover or fill plug before operating the pump.

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9
UKM-S type pumps are designed self-priming and must be filled in with
fluid before being started. The filling up procedure may be performed
through the tap over the pump casing.
All the pumps have ball bearings that are lubricated with fluidic oil. The
bearings are lubricated at the factory.
The seals are also lubrication. Check the seals, couplings and the belting
(if it exists) before start-up.
Finally, check the motor and the cables and commission.
CAUTION
Stop the motor if the pump gets too hot. Wait until it gets cold.
Then start the system up again carefully.
8. MAINTENANCE
CAUTION
Maintenance operations must be done by authorized personnel with
protective clothing only. The personnel must also beware of high
temperatures and harmful and/or caustic liquids. Make sure that the
personnel read carefully the manual.
•The instructions in Safety Precautions must be executed during
maintenance and repair
•Continuous monitoring and maintenance will increase the engine’s and
pump’ s lives.
The instructions below should be applied.
8.1.The Checks During the Operation
Pump must never be operated without water.
Pump must not be operated for a long time with the discharge valve
closed (zero capacity).
CAUTION
Do not operate the pump against a closed discharge valve for along
time. If operated against a closed discharge valve, pump
components will deteriorate and the liquid could come to boil, build
pressure and cause the pump casing to rupture or explode.
Bearing temperature must never exceed 80°C if the ambient
temperature is 30°C.
Precautions must be taken against flare up when the component
temperatures are over 60C. “Hot Surface” warnings must be placed
over necessary areas.
Water leakage from the mechanical sealing indicates the fact that the
sealing is worn out and therefore need to be replaced.
All the auxiliary systems must be in use while the pump is operating.
Check the elastic components of the coupling. Replace them when
necessary.
If the system consists of a substitute pump, keep it ready by operating it
once a week. Check also the auxiliary systems of the substitute pump.
8.2.Pump and Seal Disassembly and Reassembly
This pump requires little service due to its rugged, minimum-maintenance
design. However, if it becomes necessary to inspect or replace the
wearing parts, follow these instructions.
Many functions may be performed by draining the pump and removing
the back cover assembly. If major repair is required, the piping and/or
power source must be disconnected. The following instructions assume
complete disassembly is required.
Before attempting to service the pump, disconnect or lock out the power
source and take precautions to ensure that it will remain inoperative.
Close all valves in the suction and discharge lines.
For power source disassembly and repair, consult the literature supplied
with the power source or contact your local power source representative.
CAUTION
Before attempting to disassemble or service the pump:
1.Familiarize yourself with this manual.
2.Disconnect or lock out the power source to ensure that the pump
will remain inoperative.
3.Allow the pump to cool if overheated.
4.Check the temperature before opening any cover, plates or plugs.
5.Close the suction and discharge valves.
6.Vent the pump slowly and cautiously.
7.Drain the pump.
CAUTION
Use lifting and moving equipment in good repair and with adequate
capacity to prevent injuries to personnel or damage to equipment.
8.2.1.Back Cover and Wear Plate Removal
The wear plate (07) is easily accessible and may be serviced by removing
the back cover assembly (02).
Before attempting to service the pump, remove the pump casing drain
plug (263) and drain the pump. Clean and reinstall the drain plug.
Remove the hand nuts and pull the back cover and assembled wear plate
from the pump casing (01).
Inspected the wear plate, and replace it if badly scored or worn. To
remove the wear plate, disengage the hardware (301 and 361). Inspect
the back cover O-ring (401) and replace it if damaged or worn.
8.2.2.Flap Valve (Suction Check Valve) Removal
If the flap valve (90) is to serviced, remove the cylindiric pin (380), reach
through the back cover opening and pull the complete assembly from the
suction flange (04). The flap valve (90) can be reached by removing
suction cover (02).
Note: Further disassembly of the check valve is not required since it must
be replaced as a complete unit.
Individual parts are not sold separately.
8.2.3.Seal Removal
Slide the integral shaft and rotating portion of the seal off the shaft as unit.
Use a pair of stiff wires with hooked ends to remove the stationary
element and seat.
An alternate method of removing the stationary seal components is to
remove the hardware (375 and 329), and separate the seal plate (03) and
gasket (413) from the bearing housing (30). Position the seal plate on a
flat surface with the impeller side down.
Use a wooden dowel or other suitable tool to press on the back side of
the stationary seat until the seat, O-rings, and stationary element can be
removed.
Remove the shaft sleeve O-ring.
If no further disassembly is required, refer to seal installation.
8.2.4.Shaft and Bearing Removal and Disassembly
When the pump is properly operated and maintenance, the bearing
housing should not require disassembly.
Disassemble the shaft and bearings only when there is evidence of wear
or damage.
CAUTION
Shaft and bearing disassembly in the field is not recommended.
These operations should be performed only in a properly
equipped shop by qualified personnel.
Remove the bearing housing drain plug and drain the lubricant. Clean
and reinstall the drain plug.
Disengage the hardware (370 and 320) and slide the bearing cap (35)
and oil seal (220) off the shaft. Remove the bearing cap gasket (411), and
press the oil seal from the bearing cap.

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Place a block of wood against the impeller end of the shaft and tap the
shaft and assembled bearings from the bearing housing.
After removing the shaft and bearings (200 and 201), clean and
inspect the bearings in place as follows.
CAUTION
To prevent damage during removal from the shaft, it is
recommended that bearings be cleaned and inspected in place. It is
strongly recommended that the bearings be replaced any time the
shaft and the bearings are removed.
Clean the bearing housing, shaft and all component parts (except
the bearings) with a soft cloth soaked in cleaning solvent. Inspect
the parts for wear or damage and replace as necessary.
CAUTION
Most cleaning solvents are toxic and flammable. Use them only
in a well-ventilated area free from excessive heat, sparks, and a
flame. Read and follow all precautions printed on solvent
containers.
CAUTION
Clean the bearings thoroughly in fresh cleaning solvent. Dry the
bearings with filtered compressed air and coat with light oil.
Bearings must be kept free of all dirt and foreign material.
Failure to do so will greatly shorten bearing life. DO NOT spin dry
bearings. This may scratch the bails or races and cause premature
bearing failure.
Rotate the bearings by hand to check for roughness or binding and
inspect the bearings balls. If rotation is rough or the bearing balls are
discolored, replace the bearings.
The bearing tolerances provide a tight press fit onto the shaft and a snug
slip fit into the bearing housing. Replace the bearings, shaft, or bearing
housing if the proper bearing fit is not achieved.
If bearing replacement is required, remove the outboard bearing retaining
ring (390) and use a bearing puller to remove the bearings from the shaft.
Press the inboard oil seals (221 and 222) from the bearing housing.
8.2.5.Shaft and Bearing Reassembly and Installation
Clean the bearing housing, shaft and all component parts (except the
bearings) with a soft cloth soaked in cleaning solvent. Inspect the parts
for wear or damage and replace as necessary.
Inspect the shaft for distortion, nicks and scratches, or for thread damage
on the impeller end. Dress small picks and burrs with a fine file or emery
cloth. Replace the shaft if detective.
Position the inboard oil seals (221 and 222) in the bearing housing bore.
Press the oil into the housing until the face is just flush with the machined
surface on the housing.
CAUTION
To prevent damage during removal from the shaft, it is
recommended that bearings be cleaned and inspected in place. It is
strongly recommended that the bearings be replaced any time the
shaft and the bearings are removed.
Note: Position the inboard bearing (200). Position the outboard bearing
(201) until the retaining ring.
The bearing may be heated to ease installation. An introduction heater,
hot oil bath, electric oven, or hot plate may be used to heat the bearings.
Bearings should never be heated with a direct flame or directly on a hot
plane.
Note: Hot oil is used to heat the bearings, hot the oil and the container
must be absolutely clean. If the oil has been previously used, it must be
thoroughly filtered.
Heat the bearings to a uniform temperature no higher than 120 °C (250
°F), and slide the bearings onto the shaft, one at a time, until they are
fully seated. This should be done quickly, in one continuous motion, to
prevent the bearings from cooling and sticking on the shaft.
After the bearings have been installed and allowed to cool, check to
ensure that they are not moved away from the shaft shoulders in
shrinking. If movement has occurred, use a suitable sized sleeve and a
pres to reposition the bearings against the shaft shoulders.
If heating the bearings is not practical, use a suitable sized sleeve and an
arbor (or hydraulic) press to install the bearings on the shaft.
CAUTION
When installing the bearings onto the shaft, never press or hit
against the outer race, ball, or ball cage.
Press only on the inner race.
Secure the outboard bearing on the shaft with the bearing retaining ring
(391).
Slide the shaft and assembled bearings into bearing housing until the
retaining ring on the outboard bearing seats against the bearing housing.
CAUTION
When installing the shaft and bearings into the bearing bore, push
against the outer race. Never hit the balls or ball cage.
Press the outboard oil seal (220) into the bearing cap with the lip.
Replace the bearing cap gasket (412), and secure the bearing cap with
the hardware (370 and 320). Be careful not to damage the oil seal lip on
the shaft keyway.
Figure 10: Seal Assembly
8.2.6.Seal and Installation
CAUTION
Most cleaning solvents are toxic and flammable. Use them only in a
well-ventilated area free from excessive heat, sparks, and a flame.
Read and follow all precautions printed on solvent containers.
Clean the seal cavity and shaft with a cloth soaked in fresh cleaning
solvent. Inspect the stationary seat bore in the seal plate for dirt, nicks
and burrs, and ant that exist. The stationary seat bore must be completely
clean before installing the seal.
CAUTION
A new seal assembly should be installed any time the old seal is
removed from the pump. Wear patterns on the finished faces cannot
be realigned during reassembly. Reusing an old seal could result in
premature failure.
To ease installation of the seal, lubricate the seal sleeve (70) and the
external stationary seat O-ring with a very small amount of light
lubricating oil.
If the seal plate was removed, install the seal plate gasket (413). Position
the seal plate over the shaft and secure it to the bearing housing with the
hardware (329 and 375).
To prevent damaging the shaft sleeve O-ring on the shaft threads, stretch
the O-ring over a piece of tubing that has a little bigger inside diameter
than the pump shaft. Slide the tube over the shaft threads and then slide

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the O-ring off the and onto the shaft. Remove the tube, and continue to
slide the O-ring down the shaft until it seats against the shaft shoulder.
Install new mechanical seal to its place. Clean and inspect the impeller.
Install the full set of impeller shims provided with the seal and screw the
impeller onto the shaft until it is seated against the seal.
Continue to screw the impeller onto shaft. This will press the stationary
seat into the seal plate bore.
Measure the impeller-to-seal plate clearance and remove impeller
adjusting shims to obtain the proper clearance.
If necessary to reuse an old seal in an emergency, carefully separate the
rotating and stationary seal faces from the bellows retainer and stationary
seat.
CAUTION
A new seal assembly should be installed any time the old seal is
removed from the pump. Wear patters on the finished reassembly.
Reusing an old seal result in premature failure.
Handle the seal parts with extreme care to prevent damage.
Be careful not to contaminate precision finished faces with a non-oil
based solvent and a clean, lint-free tissue.
Wipe lightly in a concentric pattern to avoid scratching the faces.
Carefully wash all metallic parts in fresh cleaning solvent and allow drying
thoroughly.
CAUTION
Do not attempt o separate the rotating portion of the seal from the
shaft sleeve when reusing an old seal.
The rubber bellows will adhere to the sleeve during use and
attempting to separate them could damage the bellows.
Inspect the seal components for wear, scoring, grooves and other
damage that might cause leakage. Inspect the integral shaft sleeve for
nicks or cuts on either end. If any components are worn or the sleeve is
damaged, replace the complete seal; never mix old and new seal parts.
Install the stationary seal element in the stationary seat.
Press this stationary subassembly into the seal plate bore until it seats
squarely against the bore shoulder. A push tube made from a piece of
plastic pipe would aid this installation.
The ID of the pipe should slightly larger than the OD of the shaft sleeve.
Slide the rotating portion of the seal (consisting of the integral shaft
sleeve, spring centering washer, spring, bellows and retainer and rotating
element) onto the shaft until the seal faces contact.
8.2.7.Impeller Installation
Inspect the impeller and replace it if cracked or badly worn. Check
impeller, shaft and impeller key for any dirt or damage. Clean if
necessary.
CAUTION
Shaft and impeller key must be completely clean during reassembly.
Even the slightest amount of dirt on the threads can cause the impeller to
seize to the shaft, making future removal difficult or impossible without
damage to the impeller or shaft.
Note: At the slightest sign of binding, immediately back the impeller off
and check the threads fro dirt. Do not try to force the impeller on the shaft.
A clearance of 0,025 to 0,040” (0,64-1,02 mm) between the impeller and
the seal plate is recommended for maximum pump efficiency. Measure
this clearance and add or remove impeller adjusting shims as required.
Note: If the rotating assembly has been installed in the pump casing, this
clearance may be measured by reaching through the priming port with a
feeler gauge.
Note: Proceed with Rotating Assembly Installation before installing the
impeller capscrew and washer. The rotating assembly must be installed in
the pump casing in order to torque the impeller capscrew.
After the rotating assembly is installed in the pump casing, coat the
threads of the capscrew with ‘Never Seez’ or equivalent compound and
install the impeller washer and capscrew; torque the capscrew to 90 ft.Ibs
(1080 in.Ibs or 12,4 m.kg)
8.2.8. Rotating Assembly Installation
Note: If the pump has been completely disassembled, it is recommended
that the suction check valve and the back cover assembly be reinstalled
at this point. The back cover assembly must be in place to adjust the
impeller face clearance.
Install the bearing housing and seal plate O-rings and lubricate them light
grease. Ease the rotating assembly into the pump casing using the
installation tool. Be careful not to damage the O-ring. Secure the rotating
assembly to the pump casing with the hardware. A clearance of 0.010 to
0.020 inch (0.25 to 0.51 mm) between the impeller and the wear plate is
also recommended for maximum pump efficiency.
8.2.9. Suction Check Valve Installation
Inspect the check valve assembly and replace it if badly
worn.
Note: The check valve assembly must be replaced as a complete unit.
Individual parts are not sold separately. Reach through the back cover
opening with the check valve and position the check valve adapter in the
mounting slot in the suction flange. Align the adaptor with the flange hole
and secure the assembly with the check valve pin.
8.2.10. Back Cover Installation
If the wear plate was removed for replacement, carefully center it on the
back cover and secure it with the hard wear. The wear plate must be
concentric to prevent binding when the back cover is installed.
Replace the back cover O-ring and lubricate it with a generous amount of
No: 2 grease. Clean any scale or debris from the contacting surfaces in
the pump casing that might interfere or prevent a good seal with the back
cover. Slide the back cover assembly into the pump casing. Be sure the
wear plate does not bind against the impeller.
Note: To ease future disassembly, apply a film of grease on the back
cover shoulder or any surface which contacts the pump casing. This
action will reduce rust and scale build-up.
Secure the back cover assembly by tightening the hand nuts evenly. Do
not over-tighten the hand nuts; they should be just tight enough to ensure
a good seal at the back cover shoulder. Be sure the wear plate does not
bind against the casing.
8.2.11. Final Pump Assembly
Install the shaft key and reconnect the power source. Be sure to install
any guards used over the rotating members.
CAUTION
Do not operate the pump without the guards in place over rotating parts.
Exposed rotating parts can catch clothing, fingers or tools or causing
severe injury to personnel.
Install the suction and discharge lines and open all valves.
Make certain that all piping connections are tight, properly supported and
secure.
Be sure the pump and the power source have been properly lubricated.
Remove the fill cover assembly and fill the pump casing with clean liquid.
Reinstall the fill cover and tighten it. Refer to Operation, before putting the
pump back into service.
8.2.12. Component Check
To make possible the visual control, one must be able to reach the pump
from any direction. Especially, to be able to dismount the internal units of
the pump and the engine, sufficient free space must be created around
them for maintenance and repair. Furthermore, one must make sure that
the piping system can easily be dismounted.
8.2.13. Cleansing of the Casing and the Impeller
In order to take away easily the mud and solid particles that accumulate
within the casing and the pump, one may unscrew the suction cover as
shown in Figure below.

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Figure 11: Cleansing of the Casing and the Impeller
8.3.Coupling
As mentioned in Section 6.4, coupling alignment must be checked
regularly.
Worn out elastic bands must be replaced.
8.4.Drive
Apply to the operating instructions of the motor manufacturer.
8.5.Auxiliary Components
Check regularly the fittings and the gaskets, replace the worn out pieces.
8.6.Service
Our Customer Service Department offers after-sale service. Manager
should employ authorized and trained personnel for
mounting/dismounting procedures. Before these procedures, one must
make sure that pump interior is clean and empty.
This criterion is also valid for the pumps which are sent to our factory or to
our service points.
Maintain the safety of the personnel and the environment in every
field procedure.
8.7.Spare Parts
The spare parts of UKM-S type pumps are guaranteed for 10 YEARS by
MAS DAF MAKINA SANAYI A.Ş.
In your spare parts requests, please indicate the below listed values that
are indicated on your pump’s label.
Pump type and size:
Motor power and speed:
Pump serial number:
Capacity and head:
If you wish to keep spare parts in store, depending on the number of
same type of pumps, for two operation years, the quantities which are
listed in the table below are recommended.
Component Name
The Number of Equivalent Pumps
in the Installation
1-
2
3
4
5
6-
7
8-
9
10+
Shaft (key included) kit
1
1
2
2
2
3
%30
Impeller (kit)
1
1
1
2
2
3
%30
Wearing Plate
2
3
4
5
5
6
%60
Bearings (kit)
1
1
2
2
3
4
%50
O-Ring for Casing (kit + 1)
1
1
1
2
2
3
%40
O-Ring for Shaft (kit)
1
1
2
2
3
4
%50
Sealing Bushes (kit)
1
1
1
2
2
3
%30
Coupling Rubber Sleeves (kit)
In application where elastic
coupling is used.
1
2
2
3
3
4
%50
Table 5: Spare Part List
9. NOISE LEVEL AND VIBRATION
The reasons which increase the noise level are indicated below:
•Touch of coupling halves due to worn rubber sleeves (incorrectly
aligned)
•Noise level increases due to the fact that the pump is not founded
properly (Vibration)
•If the installation does not have compensator noise and vibration
increases.
•Wearing in ball bearing also increases noise level.
Check if there is any noise increasing elements in your installation.
9.1.Expected Noıse Values
Measurement conditions:
The distance between the measure point
and the pump
: 1m
Operation
: Without Cavitation
Motor
: IEC Standard Motor
Tolerance
: ±3 dB
Power of Motor PN [kW]
Sound Pressure Level (dB) *
2 Poles
4 Poles
2900 rpm/min
50 Hz
1450 rpm/min
50 Hz
0,37
<70
<70
0,55
<70
<70
1,1
<70
<70
1,5
<70
<70
2,2
<70
<70
3
<70
<70
4
<70
<70
5,5
<70
<70
7,5
76
<70
11
79
<70
15
78
<70
18,5
80
<70
22
84
<70
30
84
<70
37
82
72
45
85
74
55
87
75
75
87
76
90
86
73
110
86
83
132
85
82
160
87
84
200
87
83
Table 6: Sound Pressure Level
(*) Without protective sound hood, measured at a distance of 1 m directly
above the driven pump, in a free space above a sound reflecting surface.
The above values are maximum values. The surface noise pressure level
at dB(A) unit is shown as (LpA). This complies withTS EN ISO 20361.

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10. POSSIBLE FAILURES, CAUSES, SOLUTIONS
Possible failures and solution strategies are listed in the table below. Please apply to the Customers’ Service Department of our company when a
generic solution is not found to your problem.
While the failures are repaired the pump must always be dry and un-pressurized.
POSSIBLE FAILURE
CAUSES
SOLUTIONS
Pump fails to prime.
Not enough liquid in casing.
Flap valve contaminated or damaged.
Air leak in suction hose collapsed.
Leaking or worn seal or pump gasket.
Suction lift or discharge head too high.
Strainer clogged.
Add liquid to casing.
Clean or replace check valve.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leaking or worn seal or
gasket.
Check piping installation and install by-pass line if
needed.
Check strainer and clean if necessary.
Pump stops or fails to
deliver rated flow or
pressure.
Air leak in suction line.
Lining of suction hose collapsed.
Leaking or worn seal or pump gasket.
Strainer clogged.
Suction intake not submerged at proper level or
sump too small.
Impeller or other wearing parts worn or damaged.
Impeller clogged.
Pump speed too slow.
Discharge head too high.
Suction lift too high.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leaking or worn seal or
gasket.
Check strainer and clean if necessary.
Check installation and correct submergence as needed.
Replace worn or damaged parts. Check that impeller is
properly centered and rotates.
Free impeller of debris.
Check driver output; check belts or couplings for slippage.
Install by-pass line.
Measure lift with vacuum gauge. Reduce lift and/or
friction losses in suction line.
Pump requires too much
power.
Pump spped too high.
Discharge head too low.
Liquid solution too thick.
Bearing(s) frozen.
Chcek driver output; check that sheaves or motor rpm are
correctly sized.
Adjust discharge valve.
Dilute is possible.
Disassemble pump and check bearing(s).
Pump clogs frequently.
Liquid solution too thick.
Discharge flow too slow.
Suction check valve or foot valve cloggged or
binding.
Dilute is possible.
Open discharge valve fully to increase flow rate and
power source at maximum governed speed.
Clean valve.
Excessive noise.
Cavitaions in pump.
Pumping entrained air.
Pump or drive not securely mounted.
Impeller clogged or damaged.
Reduce suction lift and/or friction losses in suction line.
Record vacuum and pressure gauge readings and
consult local represantative or factory.
Locate and eliminate source of air bubble.
Secure mounting harware.
Clean out debris; replace damaged parts.
Bearings run too hot.
Bearing temperature is high but within limits.
Low or incorrect lubricant.
Suction and discharge lines not properly
supported.
Drive misaligned.
Check bearing temperature regularly to montior and
increase.
Check for proper type and level of lubricant.
Check piping installation for proper support.
Align drive properly.
Table 7 - Possible Failures, Causes, Solutions

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11. UKM-S PUMP DIMENSIONS TABLE AND WEIGHTS
Figure 12-a: UKM-S 2”x2” - 3”x3” - 4”x4” - 6”x6” - 8”x8” Pump
Dimensions Figure
Figure 12-b: UKM-S 10”x10” Pump Dimensions Figure
Pump Type
DNs
DNd
a
f
L
b
h1
h2
H
m1
m2
n1
n2
s1
d
l
UKM-S 2”x2”
DN 65
DN 65
316
306
622
70
151
167
524
200
163
309
281
23
38
104
UKM-S 3”x3”
DN 80
DN 80
300
437
737
60
190
242
663
382
230
439
399
18
38
101
UKM-S 4”x4”
DN 100
DN 100
317
500
817
75
220
245
700
293
250
440
400
20
38
110
UKM-S 6”x6”
DN 150
DN 150
414
490
904
62
258
310
929
447
281
585
525
20
38
127
UKM-S 8”x8”
DN 200
DN 200
406
615
1021
-
336
388
1048
521
305
705
635
22
45
170
UKM-S 10”x10”
DN 250
DN 250
710
523
1233
-
356
280
1038
385
305
710
635
22
45
120
Table 8: UKM-S Pump Dimensions Table and Weights
12. TIGHTENING TORQUES
THREAD DIAMETER
TIGHTENING TORQUE MAX (Nm)
Property Classes
8.8
10.9
M4
3.0
4.4
M5
5.9
8.7
M6
10
15
M8
25
36
M10
49
72
M12
85
125
M14
135
200
M16
210
310
M18
300
430
M20
425
610
M22
580
820
M24
730
1050
M27
1100
1550
M30
1450
2100
M33
1970
2770
M36
2530
3560
Table 9: Tightening Torques Table

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13. UKM-S SECTIONAL DRAWING AND PART LIST (2”x2” - 3”x3” - 4”x4” - 6”x6” - 8”x8”)
Figure 13:UKM-S Sectional Drawing (2”x2” - 3”x3” - 4”x4” - 6”x6” - 8”x8”)
Part No
Part Name
Part No
Part Name
Part No
Part Name
01
Pump Casing
220
Oil Gasket
340
Impeller Cap Screw
02
Back Cover
250
Mechanical Seal
361
Nut
03
Stuffing Box
260
Pipe Plug
370
Washer
04
Suction Flange
261
Pipe Plug
371
Washer
05
Discharge Flange
262
Pipe Plug
372
Washer
07
Wearing Plate
263
Pipe Plug
373
Washer
20
Impeller
264
Pipe Plug
374
Washer
30
Bearing Housing
265
Pipe Plug
375
Washer
35
Bearing Cover
266
Pipe Plug
377
Washer for Impeller Cap Screw
60
Shaft
267
Pump Casing Drain Plug
380
Flap Valve Pin
65
Cap Nut
271
Pressure Relief Valve
390
Ring
70
Seal Sleeve
300
Stud
391
Ring
72
Mechanical Seal Ring
301
Stud
395
Bolt for Lifting
90
Flap Valve
320
Hex Bolt
400
O-Ring
91
Flap Valve
321
Hex Bolt
401
O-Ring
200
Bearing
322
Hex Bolt
402
O-Ring
201
Bearing
323
Hex Bolt
410
Gasket
210
Key for Impeller
328
Hex Bolt
411
Gasket
211
Key for Pump Shaft
329
Hex Bolt
Table 10: UKM-S Sectional Part List (2”x2” - 3”x3” - 4”x4” - 6”x6” - 8”x8”)

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UKM-S SECTIONAL DRAWING AND PART LIST (10”x10”)
Figure 14: UKM-S Sectional Drawing (10”x10”)
Part No
Part Name
Part No
Part Name
Part No
Part Name
01
Pump Casing
200
Bearing
323
Hex Bolt
03
Stuffing Box
201
Bearing
328
Hex Bolt
04
Suction Flange
210
Key for Impeller
340
Impeller Cap Screw
07
Wearing Plate
211
Key for Pump Shaft
377
Washer for Impeller Cap Screw
08
Impeller Back Plate
220
Oil Gasket
390
Ring
11
Elbow Cover
221
Oil Gasket
391
Ring
12
Bearing Housing Flange
260
Pipe Plug
394
Elbow
20
Impeller
261
Pipe Plug
400
O-Ring
30
Bearing Housing
264
Pipe Plug
401
O-Ring
35
Bearing Cover
266
Pipe Plug
402
O-Ring
60
Shaft
265
Suction Elbow
403
O-Ring
65
Cap Nut
300
Stud
410
Gasket
90
Flap Valve Part
301
Stud
411
Gasket
91
Flap Valve
320
Hex Bolt
Table 11: UKM-S Sectional Part List (10”x10”)

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14. UKM-50 SECTIONAL DRAWING AND PART LIST
Figure 15: UKM-50 Sectional Drawing
Part No
Part Name
Part No
Part Name
01
Pump Casing
320
Hex Bolt
02
Volute Casing
321
Hex Bolt
04
Flap Valve Casing
322
Hex Bolt
12
Adaptor
340
İmbus Bolt
20
Impeller
360
Casing Nut
60
Shaft
370
Washer for Impeller Cap Screw
91
Suction Flap
380
Setscrew
210
Key for Impeller
400
O-Ring
250
Mechanical Seal
401
O-Ring
260
Plug
630
Electrical Motor
300
Casing Stud
Table 12: UKM-50 Sectional Part List

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15. ROTATING REGION OF UKM-S SELF-PRIMING
CENTRIFUGAL PUMP
Figure 16: Rotating Region of UKM-S Self-Priming Centrifugal Pump
Sectional Drawing
Part No
Part Name
Part No
Part Name
03
Stuffing Box
260
Pipe Plug
20
Impeller
262
Pipe Plug
30
Bearing Housing
264
Pipe Plug
35
Bearing Cover
268
Pipe Plug
60
Shaft
269
Pipe Plug
65
Cap Nut
320
Hex Bolt
70
Seal Sleeve
329
Hex Bolt
200
Bearing
370
Washer
201
Bearing
375
Washer
210
Key for Impeller
390
Ring
211
Key for Pump Shaft
391
Ring
220
Oil Gasket
400
O-Ring
221
Oil Gasket
402
O-Ring
222
Oil Gasket
412
Gasket
250
Mechanical Seal
413
Gasket
Table 13: Rotating Region of UKM-S Self-Priming Centrifugal Pump
Sectional Part List
16. AUTOMATIC AIR RELEASE VALVE SECTIONAL
DRAWING AND PART LIST
Figure 17: Automatic Air Release Valve Sectional Drawing
Part No
Part Name
Part No
Part Name
01
Casing
321
Hex Bolt
12
Adaptor
322
Hex Bolt
35
Adaptor Cover
360
Nut
60
Shaft
361
Nut
67
Spring Sleeve
370
Spring
68
Sleeve
390
Cylindirical Pin
69
Sleeve
400
O-Ring
220
Oil Seal
401
O-Ring
260
Pipe Plug
410
Gasket
320
Hex Bolt
Table 14: Automatic Air Release Valve Sectional Part List