MAS ENM Series User manual

Revision No: 02 June/2018
Fire-Fighter System Pumps
ENM 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 authorized 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 iç üretim kontrollerine bağlı olarak MAS DAF MAKİNA SANAYİ A.Ş. tarafından kontrol
edilmiştir.
Equipment / Ürün
: Tek Kademeli, Uçtan Emişli Salyangoz Tip Pompalar
Single Stage, End Suction Volute Type Pumps
Seri / Model-Tip
: ENM Serisi / ENM Series
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
EUP 2009/ 125 /EC Electric Used Products Directive/ Elektrik Kullanan Ekipmanlar Direktifi (EUP)
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 3
6.1.Installation 3
6.2.Type of Connection 4
6.3.Foundation 4
6.4.Coupling Alignment 4
6.5.Piping 5
7.Commissioning, Start up and Operating 6
7.1.Preparations Before Start up 6
7.2.Start up Procedure 6
7.3.Shut Down Procedure 6
8.Maintenance 6
8.1.The Checks During the Operation 6
8.2.Service 7
8.3.Spare Parts 7
9.Disassembly, Repair and Reassembly 8
10. Possible Failures, Causes, Solutions 9
11. Pump Dimensions Table and Weight 10
12. Tightening Torques 10
13. Forces And Moments at The Pump Flanges 11
14. ENM Sectional Drawing and Parts List 12
15. ENM Sectional Drawing and Parts List of Hydral Kit 13
16. Figure List 14
17. Table List 14
INTRODUCTION
This manual contains instructions for the installation, operation and
maintenance of the ENM series single stage, end suction volute type
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
ENM series pumps are single stage, end suction volute type pumps. They
are used in
•Water networks and pressurization facilities
•Industrial and social facilities
•Fire boat
•Ships
•Large fire extinguishing systems
Thin, clean, non-aggressive and non-explosive liquids free from large
solid particles or fibres.
CAUTION
Please contact MAS DAF MAKINA SANAYI A.Ş. for liquids that have
different chemical and physical specifications.
Technical specifications of ENM type pumps
Suction Flange: DN 300-DN 500
Discharge Flange: DN 250-DN 400
Operating Pressure: 10 bar.
Capacity: 400-4000m3/h
Hm: 60-150m.
Speed: 1500-1800 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 (such as coupling) 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
Horizontal type, single stage, single entry, horizontal volute type pumps
with a horizontal suction flange and the discharge flange on the top.
ENM pump impellers are of double incline type. The impellers are
dynamically balanced to the base. The axial thrust is compensated by
rear back wear rings and balance holes.
Pump and engine are separate components, connected to each other via
a coupling and mounted on a common base plate.
There are 4 type of ENM pumps which are ENM 250-550, ENM 300-550,
ENM 350-550, ENM 400- 550.

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The construction is compact thanks to the short distance between the
bend-resistant shaft and bearing and the volute. This feature allows it to
be used in space-restricted (eg. Marine Fire Brigade).
4.1.1. Volute Casing
The axis of suction opening is horizontal while the axis of discharge
opening is vertical and the pumps have volute type casings.
4.1.2. Locations of Flange –Flanges
Suction Flange: DN 300-DN 500
Discharge Flange DN 250-DN 400
4.1.3. Auxiliary Fittings
Please refer to the technical drawing of the pump for necessary auxiliary
fittings.
4.1.4. Impeller
The impellers of NM type pumps are (full) radial types. The impellers are
balanced dynamically in an electronic balance machine. The thrust
(axial force) is balanced with the back wear ring and balance holes.
4.1.5. Shaft
The pumps are provided with the rigid shaft capable of supporting
different loading conditions. Since the shaft diameter is highly resistant to
bending and the distance between the bearing and the sealing is short,
pump can operate at optimal conditions for the sealing.
4.1.6. Bearing and Lubrication
Two types of bearings are used in ENM design which are ball bearing and
sleeve bearing. The ball bearing is mounted to the motor side and the
sleeve bearing is mounted other side.
4.1.7. Seals
The standard shaft seal arrangement is soft gland packing rings
lubricated and cooled by the pump water.
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: Transport of Pump Group
Incorrect lifting may damage the pump unit and cause injuries.
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.Close the suction and discharge exits with gasket
6.Spray an anti-corrosive into the pump casing.
7.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 shall be installed in a location where the control and the
maintenance of the pump are easily made. The pump room shall be
suitable for operation of lifting systems such as freight elevator, forklift,
etc.
The pump group should be installed in the lowest possible location of the
pumping system in order to achieve the highest suction pressure.
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.

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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
Base plate of the pump must be grouted. The foundation shall be of
concrete or steel framework.
NOTICE: 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.
6.4.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
In order to make the alignment of the coupling, it is required to have at
least two pieces of about 10 cm tall, smooth-edged metal parts (e.g. a
steel ruler or a gauge stick) and one precision calipers. (Figure 4) (For
more precision alignments, special apparatus can be used).
Coupling misalignments in general are of two kinds:
1.Paralel Axis Misalignment (Figure 4-Figure 6)
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.
2.Angular Misalignment (Figure 5-Figure 7)
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.
Misalignments can be in horizontal or vertical planes. Misalignments
in horizontal plane can be fixed by placing sheet iron at the bottom
of the pump or motor base, while misalignments in vertical plane
can be fixed by sliding the pump or the motor in horizontal plane.
Figure 3: The Control of the Coupling Alignment in Horizontal and
Vertical Planes
Figures below illustrate the possible coupling misalignments and
the methods to correct them.
Figure 4: Paralel Axis Misalignment in Vertical Plane and Its Correction
Figure 5: Angular Misalignment in Vertical Plane and Its Correction
Figure 6: Parallel Axis Misalignment in Horizontal Plane and Its
Correction
Figure 7: Angular Misalignment in Horizontal Plane and Its Correction

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Install the coupling guard only when the alignment of the coupling is
checked.
6.4.3. 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.Coat the shaft tip of the pump and the motor sides with a sheet of
molybdenum disulfide.
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. General
Do not use the pump as the hinged support for the piping system.
Put enough supports under the piping system in order to carry the
weight of the pipe and fittings.
Avoid piping system loads on pump by installing flexible components
(compensator) to suction and discharge of the pump.
By mounting flexible supporting items, take into consideration the fact
that these items may elongate under the pressure.
Suction pipe shall be in a constantly increasing slope to the pump. Air in
the suction pipe shall be arranged to move into the pump
Discharge piping shall be in a constantly increasing slope to the
reservoir or discharge point, without up and downs which can cause air
pockets in the piping system. At locations where forming of air pockets
is possible, special items like air valve and air cock are mounted to
evacuate the trapped air.
It is important that pipe diameter and fittings are at least as much as the
pump opening diameter or preferable one or two size higher. One
should never use fittings with smaller diameters than the pump exit
diameter. In particular, preferred fittings like foot valve, strainer, filter,
check valves and valves shall have large free passing area, and low
friction loss coefficient.
For piping systems with hot liquids, thermal expansions are to be taken
into account and compensators shall be mounted in accordance with
these expansions. Caution shall be exercised to avoid the loading of
pump in this installation.
6.5.2. Specification of Work in Piping Installation
In installation of pipes, follow the procedures below certainly.
•Install the pump on the concrete base as illustrated in Figure 3.
•Take out the guards (placed by the manufacturer) from suction and
discharge openings of the pump.
•Close the suction and discharge flanges with rubber gaskets. This
precaution is important to avoid the undesired substances (weld crust,
weld slag, sand, stone, wood piece etc.) get into the pump. Do not take
off this gasket until the installation is completed.
•Start the installation of piping from the pump side. Do the necessary
assembling and welding of the parts in a successive order.
•In these operations, do not neglect to put the necessary supports in
their respected locations.
•Following above procedure, complete all piping system at suction side
up to the suction tank (or foot valve if available), at discharge side up to
do discharge collector and discharge pipe.
•When all installation and welding process is done and the heat
dissipated by welding is removed, dismantle all the bolted connections
from the suction tank to discharge pipe. Take out all demountable parts.
•Clean these parts and then paint body coat completely inside and
outside.
•Mount the parts again in their intended places. However, this time start
from the discharge line and move downward to the pump. In this
instance, do not forget to check the flange gaskets. If needed, (for
example deformation during welding) replace them.
•Concerning the connection of the pump flanges to piping, in case of
misalignment of axis and flange holes, do not force the system to
eliminate the misalignment. Forcing the system may cause difficult-to-
correct problems.
•If there is an axial misalignment between the flanges of the pump and
the pipe, due to the welding or any other reasons, cut the pipe from a
suitable location in order to fix the problem. Connect the pipe (pump
side) to the pump. After carrying out the necessary correction, connect
the parts again by welding..
•Dismantle and clean the last welded part. Repaint again and mount on
its place.
•After all these processes are accomplished, remove the rubber gasket
from the suction and discharge openings. Open their holes and mount
them again on their intended place.
6.5.3. Specification of Work after Installation of Piping and Piping
System
Installing Pipes
Suction line (top wiew)
Suction line (bottom wiew)
Suction flange
Suction flange
Figure 8: Piping System
An illustrative piping system is shown in Figure 20. Appropriate
manometers shall be mounted on suction and discharge pipe lines.
Complete the auxiliary pipe connections in piping system if exist (cooling
to bearing housing, and stuffing box (seal), relief pipe, oil pipe etc.)

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7. COMMISSIONING, START UP AND OPERATING
7.1.Preparations Before Start Up
OIL CHECK: ENM type pumps are provided with self-greased rolling
bearings requiring no servicing in life long. Therefore, it is not necessary
to check the oil.
Check pump seals
Make sure that the pump and the suction pipe is completely filled with
water before the starting. If the pump operates on a positive suction
head, no problem will be encountered. Suction valve is opened and air
drains are un-tightened.
Pumps with foot valve are filled with water by opening the pump filling
tap or, one takes advantage of the water accumulated in the discharge
pipe and by using a small valve the check valve is bypassed and the
pump is filled.
In vacuum pump driven pumps, by operating the vacuum pump one
achieves to fill the pump via increasing the water level in the suction
pipe.
CAUTION
Do not start your pump dry (WITHOUT WATER).
7.2.Start up Procedure
Check if the suction valve is open and the discharge valve is closed.
Start the motor
Wait until the motor reaches sufficient speed. (In Star-delta
connections, wait until the engine passes to delta connection.)
Keeping an eye on the amperage shown on the panel, open the
discharge valve slowly.
In the primary operation, if the discharge pipe is empty, do not open the
valve completely. By keeping an eye on the amperage, open the valve
with care regarding that it should not exceed the value indicated on
pump’s label.
After opening the valve completely, check the pressure from the pump
exit manometer and make sure that this value is the pump operating
pressure value and is indicated on pump’s label.
If the value one reads is less than the pump label value when the valve
is completely open, it means that the height is miscalculated. Increase
the value by narrowing the valve and bring it to pump’s label value.
If the value one reads is greater than the pump label value when the
valve is completely open, it means that the height is calculated less
than what it should be in reality. The device is pumping less than what
is requested. Check the installation and the calculations.
Minimum flow rate: If the pump is working with zero flow rates (closed
valve) from time to time during its operation, the water inside the pump
may endanger the pump by getting warmed up. In such cases, a
minimum flow valve must be connected to the pump exit.
CAUTION
Stop the motor if the pump gets too hot. Wait until it gets cold.
Then start the system up again carefully.
7.3.Shut Down Procedure
CAUTION
During sudden start ups and stops, a pressure reducing valve must be
placed at the exit section of high flow rate pumps whose discharge
pipelines are long, in order to reduce water hammer effect. Water
hammer may explode the pump.
In normal conditions (apart from sudden power shut down, etc), stop the
pump as below:
•Close the discharge valve slowly
•Switch the power off, stop the motor. Notice that the rotor slows down.
•Do not start up the motor at least before 1 to 2 minutes.
•If the pump will be out of use for a long time, close the suction valve
and auxiliary circuits. If the pump is outside and if there exists a danger
of frost, remove all drain taps and empty all the water inside the pump.
(5.2. Storage)
CAUTION
If the pump is outside and if there exists a danger of frost, remove
all drain taps and empty all the water inside the pump.
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).
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.
All the auxiliary systems must be in use while the pump is operating.
Gland nuts must not be tightened too much. If the amount of water
increases after a long operation time, the nuts may be tightened by 1/6
turns
If the pump has mechanical sealing, there is no need for excessive
maintenance. Water leakage from the mechanical sealing indicates the
fact that the sealing is worn out and therefore needs to be replaced.
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.
Check the elastic components of the coupling. Replace them when
necessary.
8.1.1. Component Check
CAUTION
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.
8.1.2. Bearing and Lubrication
ENM type pumps are provided with two (lifelong) carefree rolling bearings
in accordance to DIN 625. The usual service life of the rolling bearings
attains at least the operating hours indicated in the technical
specifications of DIN ISO 5199.

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8.1.3. Shaft Seal Maintenance
8.1.3.1. Packing
•Before replacing the soft packing, the gland must be dismounted first.
Used packing rings may be taken off by a sharp pointed tool. Take off
the lantern ring if it exists, then clean the interiors of the sealing box, the
gland and the lantern ring.
•Wrap a proper sized, good quality sealing over the shaft bush and
make sure that the bush tip is completely covered.
•Place the first ring, its joint facing upwards and push it to its bed by
using the gland
•If it exists push the watering ring to its bed.
•Place also the other rings to their beds alternating, i.e., their joints
facing upwards and downwards.
•After placing the last ring, position the gland and tighten it completely.
Thus, the squeezed sealing rings take the shape of the sealing box.
•Then un-tighten the nuts. Rotating the shaft tighten them slowly again.
When you feel that the shaft is put on a brake, stop the tightening.
•Water must come from the seals drop by drop as soon as the pump is
started. The number of drops must not be less than 10 and not more
than 30 per minute. Find the proper setting by tightening and un-
tightening the opposite gland nuts.
•Ensure that the water leaking from the sealing is collected and/or
discharged in a manner which is appropriate in terms of safety and
environmental criteria.
•Check the sealing temperature two hours after the gland adjustment is
made. For a system which pumps water at ambient temperature, the
sealing temperature must not exceed 80C.
Cooling seal arrangements are provided for pumps working with high
temperature liquids.
CAUTION
When tightening the gland nuts do not work with long sleeve shirts.
Otherwise it is possible to get caught by the turning shaft and get
injured.
8.1.3.2. Mechanical Seal
Mechanical Seals are absolutely leak tight and needs less maintenance
than soft packing.
Mechanical seal;
1.Provides leak proof operation in heavy operating conditions (in
waste water pumps, chemical process and refinery pumps).
2.Easily mountable and needs less maintenance.
3.Does not cause wearing on the shaft
4.Sealing operation does not depend on the quality of shaft
finishing.
8.1.4. Coupling
As mentioned in Section 6.4, coupling adjustment must be checked
regularly.
Worn out elastic bands must be replaced.
8.1.5. Drive
Apply to the operating instructions of the motor manufacturer.
8.1.6. Auxiliary Components
Check regularly the fittings and the gaskets, replace the worn out pieces.
8.2.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.
8.3.Spare Parts
The spare parts of ENM 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 (Wedge included)
(quantity)
1
1
2
2
2
3
%30
İmpeller (quantity)
1
1
1
2
2
3
%30
Sleeve and Ball
Bearing
1
1
2
2
3
4
%50
O-Ring for casting
(kit+1)
1
1
1
2
2
3
%40
O-Ring for shaft (if
exist) ( kit)
1
1
2
2
3
4
%50
Soft packing (kit)
2
2
2
3
3
4
%50
Sealing bush( if exist)
1
1
1
2
2
3
%30
Coupling rubber
sleeves (kit)
1
2
2
3
3
4
%50
Table 1: Spare Part List

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9. DISASSEMBLY, REPAIR AND REASSEMBLY
Before starting work on the pump set, make sure it is disconnected from
the mains and can not be switched on accidentally.
Fallow the safety precautions outlined in “Safety instructions”.
9.1.Disassembly
Close all valves in the suction and discharge lines, drain the pump by
the drain plug.
Drain oil from the bearing hosing if the pump is oil lubricated.
Remove coupling guard and other safety guards.
If a Spacer Type Coupling is used between the pump and the motor,
there is no need to disconnect the motor, from the Baseplate. To take
out the Spacer Part is enough.
Thanks to “Back Pull Out Design”; the impeller, shaft and other rotating
parts being removable no need to disconnect the suction and delivery
pipes.
If to take out the complete pump is necessary, disconnect pump from
the driver, suction and discharge pipes and detach the baseplate.
Disconnect the casing nuts and take out the pump rotor assembly
(Impeller + Shaft + Bearing Housing + Bearings + Bearing Covers +
Stuffing box etc.)
Take out the pump coupling half from the shaft using a pull-off device
and remove the coupling key.
Unscrew the impeller end nut and take out the impeller and impeller
key. Use rust remover solvent during dismountling if necessary.
Unscrew the nuts bearing housing to the stuffing box.
If there is the mechanical seal, unscrew the seal cover. Separate the
stuffing box from the bearings. Mechanical seal will remain on the shaft.
For pumps with soft packing, you can pull out stuffing box directly.
Dismantle the bearing covers.
Dismantle bearing by using a pull-off device. Do not use metal hammer
for this operation.
9.2.Reassembly
Reassembly proceeds in reverse sequence to disassembly as
described in section 9.1. You may find the attached drawings useful.
Coat the seats and screw connections with graphite, silicon or similar
slippery substance before reassembly. If you can not find any of the
above you may use oil.
Never use the old gaskets, make sure the new gaskets and o-rings are
the same size as the old ones.
Start mounting from the bearings. Place ball bearing on their places on
the shaft by slightly heating or by using press.
Wait until bearings get cool. (Cool if it is possible). Put this part to the
bearing housing from the coupling side. (With press or plastic hummer)
Put the bearing covers at both ends to their places. Place stuffing box
and impeller and tighten the impeller nut.
On pumps with packing is used; put the stuffing box gland in position.
And fixed the gland nuts gently.
Mount stuffing box to bearing housing.
At this stage you can insert the stuffing box and irrigation ring.
Replace impeller key and pump impellers. Tighten the impeller nuts.
Now reassembly of the rotor group is completed.
Finally mount rotor assembly to the volute casing. (In the repair shop or
on site.)
Make sure the gaskets and o-rings are evenly placed without sliding
and not damaged or not squeezed at all.

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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
The pump delivers insufficient
capacity
Discharge head too high
Very high counter pressure
Pump and/or pipe cannot discharge air, cannot suck
Occurrence of air pockets inside the pipe
NPSH is too low
Readjust the operating point
See if there is any undesired material inside
the pipe
Vent completely the pump and the pipe
Change the piping configuration
Increase the liquid level
Motor overload
System pressure is lower than the requested pressure level
Speed too high
Liquid pumped of different specific gravity and viscosity than
that for which pump is rated
Engine works at two phases
Adjust the operating pressure to the label
value
Decrease the speed
Increase the engine power
Replace the fuse and control the electrical
connections
Pump head is too high
System pressure is higher than the requested pressure level
Set the operating pressure to the label value.
Bearing temperatures are high
Worn out coupling
Too much, too little or improper lubrication
Increase in axial forcing
Replace the coupling
Change the oil, decrease or increase its
quantity
Clean the balance holes on the impeller disc
Excessive leakage from the
stuffing box
Worn out gland
Loose gland
Use brand new gland
Change the stuffing bush
Tighten the gland nuts
Noisy operation
Worn out motor or pump ball bearings
Cavitation
Worn out or misaligned coupling
Operation in the far left or right of the performance curve
Replace
Close the delivery partially in order to reduce
the capacity.
Replace the coupling or align it
Operate the pump at its label setting
Excessive increase in pump
temperature
Pump and/or pipe can neither discharge, nor aspirate air
Too low capacity
Bleed completely the pump and the pipe
Open more the valve
Vibration
Pump and/or pipe can neither discharge, nor aspirate air
NPSH is too low
Internal components of the pump are worn out
System pressure is lower than the requested pressure level
Coupling is misaligned
Too much, too little or improper lubrication
Rotor unbalanced
Improper bearings
Bleed completely the pump and the pipe
Increase the liquid level
Replace the worn out components
Adjust the operating pressure to the label
value
Align the coupling
In case of continuous overload, decrease the
impeller diameter
Change the oil, decrease or increase its
quantity
Balance the impeller again
Use new bearings
Table 2 - Possible Failures, Causes, Solutions

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11. ENM PUMP DIMENSIONS TABLE AND WEIGHTS
Figure 9: ENM Pump Dimensions Figure
No
Pump Type
a
f
h1
h2
b
m1
m2
n1
n2
s1
d
l
Weight
(kg)
1
ENM 250-550
230
544
500
425
400
300
240
800
650
30
75
140
670
2
ENM 300-550
230
544
550
500
400
300
240
800
650
30
75
140
720
3
ENM 350-550
240
625
600
500
425
360
290
1050
900
30
90
170
890
4
ENM 400-550
280
640
600
550
400
360
290
1050
900
30
90
170
1063
Table 3 - ENM Pump Dimensions Table and Weights
12. TIGHTENING TORQUES
THREAD DIAMETER
TIGHTENING TORQUEMAX (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 4 - Tightening Torques Table

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13. FORCES AND MOMENTS AT THE PUMP FLANGES
All of the applied load sif not reached the maximum allowable value, to provide that the following additional conditions, one of these loads may
exceed the normal limit:
Any component of a force or a moment, must be limited1.4times of the maximum allowable value,
The actual force sand moments acting on each flange, should provide the following formula:
2
2
allowabl emaximum
actual
2
allowabl emaximum
actual 

















 
M
M
F
F
In here,
F
and
M
arearithmetic sum of the loads for each flange at the pump level, without regard of the algebraic signs of the actual
and maximum allowable values.
Pump Type
Forces
Moments
Flanges DN
Suction Flange
Discharge Flange
Suction Flange
Discharge Flange
Suction
Discharge
N
N
Nm
Nm
Fy
Fz
Fx
Fy
Fz
Fx
My
Mz
Mx
My
Mz
Mx
ENM 250-550
300
250
3410
3067
3810
2571
3181
2838
1200
1391
1695
1200
1391
1695
ENM 300-550
350
300
3410
3067
3810
3581
4438
3981
1200
1391
1695
2095
2419
2952
ENM 300-550
400
350
5124
4610
5695
4095
5067
4552
3238
3733
4552
2629
3029
3695
ENM 300-550
500
400
5695
5124
6324
4095
5067
4552
3905
4495
5505
2629
3029
3695
Table 5 - Forces and Moments at The Pump Flanges
Forces at the pump flanges were calculated according toTS EN ISO 5199 standard. The calculations are valid for the materials of cast iron and
bronze. Forces and moments at the flanges that made of stainless material will be approximately twice as moments in the table.

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14. ENM SECTIONAL DRAWING AND PARTS LIST
Figure 10: Design with the Packing
Part No
Name of the Part
Part No
Name of the Part
Part No
Name of the Part
01
Pump Casing
65
Impeller nut
300
Suction Flange Stud
02
Suction Flange
67
Sliding Bearing Sleeve
301
Pump Casing Stud
05
Impeller Wear Ring (Front)
200
Ball Bearing
302
Gland Stud
06
Impeller Wear Ring (Back)
210
Impeller Key
320
Hex Bolt
20
Impeller
211
Coupling Key
360
Nut
30
Bearing Housing
220
Oil Seal
362
Gland Nut
35
Bearing Cover
221
V Ring
363
Ball Bearing Nut
37
Water Disc
240
Soft packing
380
Set-Screw
50
Stuffing Box
260
Plug
390
Safety Ring
54
Gland
261
Plug
400
O-Ring
56
Lantern ring
262
Plug
401
O-ring
60
Shaft
270
Plug (For Grease)
Table 6: ENM Sectional Part List

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15. ENM SECTIONAL DRAWING AND PARTS LIST OF HYDRAL KIT
Figure 11:Design of Hydral Kit
Part No
Name of the Part
01
Pump Casing
02
Suction Flange
05
Impeller Wear Ring (Front)
06
Impeller Wear Ring (Back)
20
Impeller
50
Stuffing Box
54
Gland
56
Lantern ring
65
Impeller nut
67
Sliding Bearing Sleeve
240
Soft packing
261
Plug
300
Suction Flange Stud
301
Pump Casing Stud
302
Gland Stud
360
Nut
362
Gland Nut
380
Set-Screw
400
O-Ring
Table 7: ENM Sectional Part List of Hydral Kit

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16. FIGURE LIST Page No
Figure 1 Pump Label 2
Figure 2 Transport of Pump Group 3
Figure 3 The Control of the Coupling Alignment in Horizontal and Vertical Planes 4
Figure 4 Paralel Axis Misalignment in Vertical Plane and Its Correction 4
Figure 5 Angular Misalignment in Vertical Plane and Its Correction 4
Figure 6 Parallel Axis Misalignment in Horizontal Plane and Its Correction 4
Figure 7 Angular Misalignment in Horizontal Plane and Its Correction 4
Figure 8 Piping System 5
Figure 9 ENM Pump Dimensions Figure 10
Figure 10 Design with the Packing 12
Figure 11 Design of Hydral Kit 13
17. TABLE LIST Page No
Table 1 Spare Part List 7
Table 2 Possible Failures, Causes, Solutions 9
Table 3 ENM Pump Dimensions Table and Weights 10
Table 4 Tightening Torques Table 10
Table 5 Forces and Moments at The Pump Flanges 11
Table 6 ENM Sectional Part List 12
Table 7 ENM Sectional Part List of Hydral Kit 13

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Mas Grup
Head Office / Center Service:
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Tel: [phone] pbx Fax: [phone]
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