SNL

SNL IN LINE CENTRIFUGAL PUMPS

INSTRUCTION for INSTALLATION, OPERATION & MAINTENANCE

Pump Type
Serial No
Capacity
Head
Motor Power
Speed

: ..................
: ..................
: ..................m/h
: ..................m
: ..................kW
: ..................rpm

BK SNL 00 10-12 EN

Instructions for Installation, Operation and Maintenance

Standart Pompa ve Makina San. Tic. A..

All rights reserved. Can not be copied or reproduced for any purpose without permission.
Subject in the manual can be changed without any prior notice.

Contents
CONTENTS
IDENTIFICATION OF SAFETY AND WARNING SYMBOLS
GENERAL INSTRUCTIONS
SAFETY INSTRUCTIONS

i
iii
iii
iii

A-

GENERAL
A1- Pump Description
A2- Applications
A3- Pump Designation
A4- Pump Nameplate
A5- Technical Data

1
1
1
1
1
1

B-

UNCRATING, TRANSPORT AND STORAGE

B1- Uncrating
B2- Transport
B2.1- General recommendations
B2.2- Lifting
B3- Storage

2
2
2
2
2
3

C-

INSTALLATION ON SITE
C1- Preparation For Installation
C2- Installation Site
C3- Installation
C3.1- Pump installed on pipe
C3.2- Pump installed on foundation
C4- Connection The Piping
C4.1- General
C4.2- Suction piping
C4.3- Discharge piping
C4.4- Auxiliary pipe connections and accessories
C4.5- Minimum flow
C4.6- Electrical connections
C4.7- Final check

3
3
3
3
3
3
4
4
4
5
5
5
6
6

D-

START UP / SHUT DOWN

D1- Preparation
D1.1- Lubrication control
D1.2- Check the shaft seal
D1.3- Venting and priming
D1.4- Checking the direction of rotation
D2- Start Up The Pump
D3- Shut Down The Pump
D4- Checks To Be Made While The Pump Is Running

7
7
7
7
7
7
7
7
8

E-

LUBRICATION

ii

F-

DISASSEMBLY, REPAIR AND REASSEMBLY

F1- Disassembly
F2- Reassembly
F3- Shaft Seal

GHIJKLM1M2NO-

SPARE PARTS
FAULTS, CAUSES AND REMEDIES
TIGHTENING TORQUES
EXPECTED NOISE VALUES
PERMISSIBLE FORCES AND MOMENTS AT THE PUMP FLANGES
PUMP DIMENSION GROUPS AND WEIGHTS
SECTIONAL DRAWINGS (FOR MOTOR FRAME SIZE UP TO 200)
SECTIONAL DRAWINGS (FOR MOTOR FRAME ABOVE 200)
PERMISSIBLE INSTALLATION ARRANGEMENTS
SAFETY GUARD

8
8
9
9
10
10
12
12
13
14
17
18
19
19

This manual is intended to be a reference guide for users of pumps providing information on
Pump installation and maintenance instructions,
Pumps start-up, operation and shut - down procedures.

IDENTIFICATION OF SAFETY AND WARNING SYMBOLS

Safety instructions in this manual which could cause danger to life if not observed.
The presence of a dangerous electric current.
ATTENTION

Non observance to this warning could damage the machine or affect its functions.

GENERAL INSTRUCTIONS
- This manual should be kept in a safe place and ALWAYS be available to the QUALIFIED
operating and maintenance personnel responsible for the safe operation and maintenance
of the pumps.
- Qualified personnel should be experienced and knowledgeable of safety standards.
- To avoid faulty operation and malfunctioning of pumps the instructions in this manual are to be CAREFULLY
studied and followed at all stages of the pump installation and operating life.
- The user is responsible for ensuring that inspection and installation are carried out by authorized and qualified
personnel who have studied this manual carefully.
- The pump should be used ONLY in the operating conditions given on the order for which the pump and
materials of the construction have been selected and tested.
- If the pump is to be used for a different application please contact sales office or representative of the
manufacturer. STANDART POMPA refuses to assume any responsibility if the pump used for different applications
without prior written permission.
- If the pump is not to be installed and operated soon after arrival, it should be stored in a clean and dry place
with moderate changes in ambient temperature. Extreme low or high temperatures may severely damage the
pump unless suitable precautions are taken. The user is responsible for the verification of the ambient conditions
where the pump will be stored or installed.
- STANDART POMPA does not guarantee repairs or alterations done by user or other unauthorized personnel.
The use of original spare parts and accessories authorized by manufacturer will ensure safety.
- This manual does not take into account any site safety regulation, which may apply.

SAFETY INSTRUCTIONS
Strictly obey to the following instructions to prevent personal injuries and/or equipment
damages:
- Pump should be used only in the specified operating conditions.
- Any weight, stress or strains on the piping system should not be transmitted to the pump.
- Electrical connections on the motor or accessories must always be carried out by authorized personnel and
in accordance to the local codes.
- Any work on the pump should be only carried out when the unit has been brought to standstill.
- Always disconnect the power to the motor and make sure not be switched on accidentally
before working on the pump or removing the pump from installation.
- Any work on the pump should be carried out by at least two persons.
- When approaching the pump always be properly dressed and/or wear safety equipment suitable for the work
to be done.
- Do not work on the pump when it is hot.
- Do not touch the pump or piping with high temperature. User must take suitable precaution to warn the
persons (e.g. using warning signs, barrier).
- Always be careful when working on pumps that handling dangerous liquids (e.g. acids or hazardous fluids).
- Do not work on the pump when the pump and piping connected to the pump are under pressure.
- After completion of the work always fix the safety guards back in places previously removed.
- Do not run the pump in the wrong direction of rotation.
- Do not insert hands or fingers into the pump openings or holes.
- Do not step on the pump and/or piping connected to the pump.
iii

SNL PUMPS
A- GENERAL
A1- Pump Description
SNL series pumps are radially split volute casing, single stage, close-coupled, in-line centrifugal pumps with
closed impeller and mechanical seals.
A2- Applications
SNL series pumps are suitable for clean or slightly contaminated (max. 20 mg/dm) liquids with low viscosities
and temperatures up to 110 C. The main application areas, among others, are
Water supply systems,
Warm water heating, chilled and cooling water systems.
Water systems for industrial uses,
Industrial circulating systems,
Fire fighting
A3- Pump Designation
SNL 100 - 250
Pump type
Discharge nozzle (DN - mm)
Nominal impeller diameter (mm)

A4- Pump Nameplate

1
Pompa ve Makina San. Tic. A..

DOS 2. Cad. No: 9

Y. Dudullu/ mraniye
iSTANBUL /TRKYE
+90 216 466 89 00

TP :

Y:

Q:

m/h H :

P:

kW D :

mm

n:

rpm

No :

123456789-

Pump Type and Size

Production Year
Serial No
Capacity
Head
Motor Power
Impeller Diameter
Speed
Direction of Rotation

A5- Technical Data

Speed

: up to 3600 rpm

Discharge Nozzle

: DN 32 up to 200 mm

Suction and Discharge Flanges

: EN 1092-2 / PN 16

Operating Temperature

: -10 C up to 110 C

Ambient Temperature (max)

: 40 C

Casing Pressure (max)

: 16 bar (Group A, B)

Permissible liquids

: See A2

10 bar (Group C, D)

B- UNCRATING, TRANSPORT AND STORAGE

B1- Uncrating
Upon receipt verify that the goods received are in exact compliance with that listed on the packing list.
Check that no visible damage exists on the crate that could have occurred during transportation.
Carefully remove the packaging material and check that pump and accessories (if any) are free from any
markings, stretches and damages, which may have occurred during transportation.
In the event of damage report this immediately to STANDART POMPAs service department and to the
transport company.
B2- Transport
B2.1- General recommendations
Existing regulations for the prevention of accidents must be followed.
Wearing of gloves, hard-toed boots and hard hats is obligatory for all transport works.
Wooden cases, crates, pallets or boxes may be unloaded with fork-lift trucks or using hoisting
slings, depending on their size, weight and construction.
B2.2- Lifting
Prior to lifting and moving the pump or pump and motor on a common base plate find out the following:
Total weight and center of gravity
Maximum outside dimensions
Lifting points location
The load-bearing capacity must be proper to the weight of the pump or the pump set.
The pump or pump set must always be raised and transported in horizontal position.
It is absolutely forbidden to stand beneath or nearby a raised load.
A load should never remain in a raised position for longer than necessary.
Accelerating and braking during the lifting process must be performed such that there is no danger to persons.
When lifting the pump set lift them as shown in Fig.1 to avoid any distortion (especially do not use the motor
eyebolt for carrying the complete unit).

Fig. 1 Pump set

B3- Storage
If the pump is not to be installed and operated soon after arrival, store the pump in a clean, dry and frostfree place with moderate changes in ambient temperature.
To prevent the pump from moisture, dust, dirt and foreign materials suitable steps should be taken.
The pump shaft should be revolved periodically (e.g. once a week) to prevent pitting of the bearing surfaces
and the pump from seizing up.

C- INSTALLATION ON SITE
ATTENTION
Installation has to be carried out in accordance with EN 60204-1.
The pump should only be installed, leveled up and aligned by skilled personnel. Incorrect installation or defective
foundation could result in troubles. This would not be covered by the warranty.

C1- Preparation for Installation

Before installing the pump clean the suction and discharge flanges thoroughly.
C2- Installation Site
ATTENTION
The
pump must be installed in a frost and dust-free, well-ventilated and non-explosive
environment.
The pump should be installed such that there is space for access, ventilation, maintenance and there is
sufficient space above the pump for it to be lifted.
The suction pipe should be kept as short as possible.

C3- Installation
SNL pump can be installed either pipe-supported on sufficiently anchored pipework or base mounted on a
foundation.
C3.1- Pump Installed on Pipe
SNL pumps can be installed on straight pipes in horizontal or vertical position.
When pump mounted on a vertical pipe the flow may be from up to down or reverse direction.
When pump mounted on a horizontal pipe, the motor axis may be horizontal or vertical position but it MUST
NEVER fall below the horizontal line.
ATTENTION

See Fig. 12 in section N for permissible installation arrangements.

C3.2- Pump Installed on Foundation

SNL pump can be installed on a foundation with special base plate for vertical mounting on flexible pipes.
ATTENTION
The
greatest care must be taken in preparing the foundation and mounting the pump set.
Incorrect installation will result in premature wear of pump components and break down of the pump.
The foundation should be heavy enough to reduce vibrations and rigid enough to avoid any twisting or
misalignment. Make sure the concrete foundation has set firm and solid before mounting the pumpset. The
surface of the foundation should be truly horizontal and perfectly flat.
Place the pumpset on the concrete and by adding or removing shims under the baseplate align the pump
flanges vertically a shown on Fig.2.
Slightly tighten the anchor bolts.
Wait until the concrete firmly set (minimum 3 days).
Tighten the anchor bolts.

Fig. 2. Foundation, baseplate and fitting the shims

C4- Connecting The Piping

C4.1- General
Never
ATTENTION
use the pump as an anchorage point or as a carrier for the piping.
The pipes should be supported very near the pump (Fig. 3). It must be checked that any weight, stress or
strains on the piping system should not be transmitted to the pump. Therefore after completing the piping
installation, the bolt and connection on the suction and discharge nozzles must be loosened to ensure that
there is not any stress on the piping system to the pump.
The nominal sizes of the pump suction and discharge nozzles are no guide to the corrects sizes of
the suction and discharge piping. The nominal bores of the pipes should be same as or greater than those
of the pump nozzles. Never use pipes or accessories which have smaller bore than the pump nozzles.
Particularly foot valves, strainers, filters and non return valves must be preferred with larger free transition
areas. In general the flow velocities should not exceed 2 m/s in the suction piping and 3 m/s in the discharge
piping. Higher flow velocities will result in higher pressure drops, which could cause cavitation conditions in
the suction piping and excessive friction losses in the discharge piping.
Pipe joints should be by means of flanges with flange gaskets of proper size and material. Flange gasket
must be centered between the flange bolts in a such way that there is no interference with the flow of the liquid.
Thermal expansions of the pipework and excessive vibrations should be accommodated by suitable means
so as not to impose any extra load on the pump.
Prevent impurities such as welding beads, scale, sand and tow might be left in pipes while production of
the piping system harms the pump. Seal the pump nozzles by means of blind gasket to stop impurities get in
the pump. After assembling the system all the piping parts must be disassembled, thoroughly cleaned, painted
and reassembled again. If a strainer is used on the suction side of the pump, it must be cleaned after several
days of operation.
Piping Support

Long Radius Elbow

Long Radius
Elbow

Isolating Valve
Piping Support
Fig. 3a. Suction Lift

Fig. 3b. Suction Head

C4.2- Suction piping (Fig. 4)

The suction piping must be absolutely leak-tight and not present any features likely to promote the formation
of air pockets. Suction piping therefore should have a slight downward slope towards the pump in the case
of suction head installation (e.g. flooded suction) and slight upward slope towards the pump in the case of
suction lift installation.
In order to keep the pipe friction losses as low as possible it is essential to avoid any sharp bends and abrupt
changes of direction or cross-section and the suction pipe should be kept as short as possible. If it is necessary
to change the cross-section of a piping laid almost horizontal, an eccentric reducer, with top horizontal, should
be used.
A positive suction head piping should incorporate an isolating valve with the valve stem in the horizontal
position. This valve should always remain fully open while the pump is running and must not be used to regulate
the flow.
4

C4.3- Discharge piping (Fig. 4)

A control valve should be installed in the discharge pipe, as close to the pump as possible, to regulate the
required flow and head.
If the total head of the pump exceeds 10 meters or if discharge line is of appreciable length a non return
valve should be installed between the pump and isolating valve on the discharge line to protect the pump
against water hammer and reverse flow on shut down.

Isolation Valve

Non Return Valve

Flow Control Valve

Eccentric
Reducer

Non Return Valve

Flow Control Valve
Foot Valve

Eccentric
Reducer

Strainer

Fig. 4b. Suction Head

Fig. 4a. Suction Lift

C4.4- Pressure gauge connections

Pressure and vacuum gauges must be properly anchored and connected at the measuring points located
on the pump flanges (Fig. 5) or on the pipes close to the flanges approximately 8 mm diameter tubing with
pig tail configuration to lessen pressure fluctuation. For safety purposes isolating and vent valves should be
fitted before the gages (Fig. 6).

Vent Valve

d1

d2

Isolation Valve
d1 : Pressure gauge (suction)
d2 : Pressure gauge (discharge)

Fig. 6.

Fig. 5.

C4.5- Minimum flow

If there is a possibility of the pump having to operate at zero flow (against a closed discharge valve) or near
the closed valve with almost no flow, then a minimum flow valve (or a by-pass check valve) must be installed
on the discharge nozzle or on the discharge piping right after the pump but before the flow regulating valve.
In cases where there is no such a valve operating the pump against close valve for a long time causes
considerable damage on the pump since almost all the motor power is transformed into thermal energy which
is absorbed by the pumped liquid.
5

C5.6- Electrical connections

The electrical motors have to be built in accordance with EN 60034-1.
Enclosures of electrical motors and control systems on the pump unit shall as a minimum
give protection in accordance with EN 60529 IP22. But in determining the degree of protection of
enclosures of electrical motors and control systems on the pump unit the operating and environmental
conditions must be taken into consideration.
Electrical connection should be done by a qualified electrician. Current national regulation and motor
manufacturers instructions must be observed.
Take all safety precautions listed in Safety instructions. Disconnect all power supplies prior to doing any
work.
The supply cable must be laid in such a way that it never touches the pipework, pump and motor casing.
Check voltage, phase and frequency on motor nameplate with the mains.
The electric motor must be protected against overloading by means of circuit breakers and/or fuses. Circuit
breakers and fuses must be selected in accordance with full load amperage of the motor appearing on the
motor rating plate.
It is recommended to use PTC (passive thermal control) on motor, but this is optional depending on customer
requirement. In case of using PTC, these should be connected via corresponding terminals in the terminal box
and the PTC should be connected to the thermal trip mechanism.
Prior to connecting the electrical wiring rotate the pump shaft by hand to make sure rotor rotates easily.
Connect the electrical wiring in accordance with local electrical codes and make sure to ground the motor.
The connection diagram can be found in the terminal box of the motor or in the instruction manual.
The mains connection on the tagboard depends on the nominal power of the motor, the power supply and
the type of connection. The necessary connection of the bridges in the terminal box is shown in the following
(Table 1. and Fig. 7a, 7b, 7c).
Table 1
Motor Power
PN 4 kW

Motor Power
PN > 4 kW

Type of switch
power supply
3 ~ 400 V
Y connection (7b)

direct
Y / - start

U2

V2

U1

V1

W1

L2

W2
U1

L3

L1

Fig. 7a. - connection

U2
V1

L2

connection(7a)
Remove connecting
bridges (7c)

Impossible

W2

L1

power supply
3 ~ 400 V

V2
W1

L3

W2

U2

V2

U1

V1

W1

L1

Fig. 7b. Y connection

L2

L3

Fig. 7c. Y / - start

ATTENTION
In the case of three-phase induction motors with Y connection it must be ensured that
the change-over points between star and delta follow on from one another very quickly. Longer change-over
times may result in pump damage (Table 2).

Table 2
Motor Power
30 kW
> 30 kW
6

Y - set time
< 3 sec
> 5 sec

C5.7- Final check

After completion all the above process rotate the pump rotor several times by hand. Make sure rotor rotates
easily.
Fix the safety guards back in places. Do not operate the pump before doing so. This is a necessity for
security and job safety.

D- START UP / SHUT DOWN

D1- Preparation
D1.1- Lubrication control
Since the bearings of motor are life-time lubricated type, they are maintenance free.
D1.2- Check the shaft seal (see F3)
D1.3- Venting and priming
Make sure that the pump and suction pipes are completely filled up with water before the pump is started.
There is no problem for the pumps which have positive suction head. Close the discharge valve and remove
the plug from one of the pump flanges, depending on the pump location, and gradually open the isolating valve
in the suction pipe until a steady stream of water run out. Then screw the plug and completely open the isolating
valve.
If there is a foot valve for the pump, which has suction lift, remove the plug from one of the pump flanges
and fill up with water through the hole using a funnel, hose or a similar device.
If the system has a vacuum pump, water is brought up in the rising pipe and filled up the pump through this
vacuum pump. When water is risen up to the highest point then the pump is started up
ATTENTION

Make sure the pump never runs dry.

D1.4- Checking the direction of rotation

SNL type pumps rotate in clockwise when it is looked from motor to the pump. This direction is already indicated
on the pump nameplate by an arrow. Check this by switching the pump on, then off again immediately. Fit the
safety guard back in place if you took it out.
D2- Start Up The Pump
Check if the shut off valve in the suction line is open and the shut off valve in discharge line is closed.
Switch on the circuit breaker and run the motor.
Wait until the motor reaches the full speed (on star-delta running motors wait until it switches on delta).
Open the discharge valve slowly while watching the ampermeter on the control panel (If the discharge line
is empty do not turn on the valve fully open on first start up. Turn it on slowly to maintain the value on the
ampermeter is under the rated current value of the motor).
When the valve is if fully open, check the pressure on the manometer and see it is the same with the duty
point pressure. If the pressure on the pressure gauge is lower than duty point pressure brings them to the duty
point value by slightly closing the valve. If it is higher value, check your installation, particularly head again.
ATTENTION The pump should be shut down at once and the trouble should be corrected if the pump is
running at its rated speed and found any of the following faults:

Pump doesn't deliver any water,

Pump doesn't deliver enough water,
Flow is going down,
Discharge pressure is not enough,
Driver overloaded,
Vibration on pump,
High noise level,
Bearing overheating

D3- Shut Down The Pump

Slowly close the shut-off valve in the discharge line.
You may shut down the pump without closing the shut-off valve if there is a device for water hammer
protection on the discharge line or the water hammer is not a considerable level.
Switch off the driver. Ensure the pump set runs down smoothly and quietly to a standstill.
If the set is to remain out of services for a long time close the shut-off valve in the suction pipe. In the event
of frost and/or prolonged standstill, drain the pump or otherwise protect against freezing.
D4- Checks to be Made While The Pump is Running
The pump must run smoothly, quietly and free from vibration at all times.
The pump must never run dry.
Never run the pump for along period against a closed discharge valve (At zero flow).
The bearing temperature may exceed the ambient temperature by up to 50 C. But must never rise above
80 C.
The pump has a mechanical seal, these will experience only minor leakage or no visible leakage during
operation. It is maintenance free. If there is considerable leakage from the seal, that means the seal surfaces
are worn-out and it needs to be replaced. The operation life of the mechanical seal highly depends on the
purity of the water.
Occasionally check the motor current. Stop motor if the amperage is higher than usual; there may be jamming
or friction in the pump. Make the necessary mechanical and electrical checks.
Stand-by pumps should be run for a short time at least once a week to ensure they are in constant readiness
for operation. Check the integrity of auxiliary connections.

E- LUBRICATION
The bearings of motor are always life-time grease lubricated and then maintenance-free.
ATTENTIONThe bearing temperature may exceed the ambient temperature by up to 50 C. But never rise
above 80 C.
Do not reuse the bearings following disassembly for maintenance purposes.

F- DISASEMBLY, REPAIR AND REASSEMBLY

ATTENTION Before starting work on the pumpset, make sure it is disconnected from the mains and can
not be switched on accidentally.
Follow the safety precaution measures outlined in the "safety instructions" section.

F1- Disassembly
Close all valves in the suctions and discharge lines.
Remove the safety guard (See section O for safety guard).
Detach pump suction and discharge flanges and all auxiliary supply lines (if any), disconnect the pump set
from the piping system.
Dismantle the volute casing (001) from the stuffing box cover (046) (Be careful to keep the stuffing box cover
in place to avoid any mechanical seal trouble).
Unscrew the end nuts (065) of the impeller and take out the impeller (050) and impeller key (210). Use rust
remover solvent if necessary during dismantling.
Take out the spacer sleeve (067).
Pull out the rotating part of the mechanical seal (405).
Dismantle the seal cover (046) and take out the stationary part of the mechanical seal from the seal cover.
Dismantle the motor pedestal (012).
Unscrew the set-screws (380) of the pump shaft (060), or alliens of the rigid coupling (085) depending on
connection type.
Pull off the pump shaft (060) from the motor shaft.

F2- Reassembly
Reassembly proceeds in reverse sequence to disassembly as described in section F1. You may find the
attached drawings useful (see sectional drawing in section M).
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 instead (except the pumps for drinking water).
Never use the old o-rings and make sure the o-rings are the same size as the old ones.
A- For Motor Frame Size up to 200 (See section M1)
Place the motor (600) vertical as the shaft end comes to the upper side.
Assemble the motor pedestal (012) to the motor (600).
Slip the pump shaft (060) onto the motor shaft.
Place the stuffing box cover (046) onto the motor pedestal (012)
Make the alignment of the pump shaft's location to
Casing Cover (046)
Set-Screw (380)
provide the length as per the length "S" given in section
K. ("S" is the distance between the shaft shoulder and
the end of the mechanical seal chamber. (See Fig. 8).
Tighten the set-screws (for the shaft consists of 3 setscrews starting from the one in the middle and if or the
S
shaft consists of 2 set-screws start from the one near the
Pump Shaft (060)
Motor Shaft (600)
motor).
Place the stationary part of the mechanical seal into
Fig. 8.
the seal chamber.
Slip the rotating part of the mechanical seal onto the pump shaft (060) and place the spacer sleeve (067).
Place the impeller key (210) into keyway, slide the impeller (050) onto the shaft (060) and screw the impeller
nuts (065).
Assemble the volute casing (001).
Mouth the base plate (011) to the pump (if used).
B- For Motor Frame Size Above 200 (See section M2)

Rigid Coupling (085)

Place the motor (600) vertical as the shaft end comes to the upper side.
Slip the rigid coupling (085) onto the motor shaft (060) put the washer (370)
on the rigid coupling (085) and tighten by using imbus head bolt (340). So that
the shaft end and the coupling end will be on the same plane (see Fig. 9).
Tighten the set-screw (380) over the rigid coupling (085).
Mount the pump shaft (060) to the rigid coupling (085).
Place the stuffing box cover (046) onto the motor pedestal (012).
Place the stationary part of the mechanical seal into the seal chamber.
Slip the rotating part of the mechanical seal onto the pump shaft (060) and
place the spacer sleeve (067).
Place the impeller key (210) into keyway, slide the impeller (050) onto the
shaft (060) and screw the impeller nuts (065).
Assemble the volute casing (001).
Mouth the base plate (011) to the pump (if used).
Motor Frame size IEC 200 and up 4 poles
(1450 rpm or 1750 rpm) Motor Pumps
80-400
125-315
150-315

100-400
125-400
150-400

Set-Screw (380)

Motor Shaft (600)

Washer (370)
Allen Bolt (340)
Fig. 9.

Motor Frame size IEC 250 and up 2 poles

(2900 rpm or 3500 rpm) Motor Pumps
65-250
80-250
100-250

F3- Shaft Seal

SNL type pumps are with mechanical shaft seals.
When operating properly the mechanical seal has no visible leakage. Usually mechanical seals do not require
maintenance until leakage is visible but its tightness is to be checked regularly.
9

Follow the instructions of mechanical seal manufacturers for the pumps having mechanical seals and NEVER
RUN IT DRY!
Mechanical seal diameters are given in Table 3.
Table 3
Pump Dimension
Group

Mechanical Seal
Diameter

A
B
C

30
40
50

NOTE : See section L for pump dimension group

G- SPARE PARTS
STANDART POMPA guarantees to supply the spare parts for SNL type pumps for 10 years. You can provide
any spare parts easily.
Lets us know the following details on the name-plate, when you order spare parts.
Pump Type and Size

: (SNL 125-315)

Motor Power and Speed

: (30 kW 1450 rpm)

Prod. Year and Serial Number

: (2012 1015410)

Capacity and Head

: (200 m/h 30m)

If you prefer to have spare parts in your stock, we recommed you to have the following quantities for a two
years operation depending on the number of same type of pumps (Table 4).
Table 4
Part
No

Part Name

060
050

Number of Pumps in The System

6-7

8-9

10+

Shaft (Incl. keys)

30%

Impeller

30%

020 - 021

Wear rings (if any)

50%

420

O-Rings for Casing

12

150%

405

Mechanical Seal

40%

067

Spacer Sleeve

20%

H- FAULTS, CAUSES AND REMEDIES

In this section you will find operating faults which may arise, and their causes (Table 5), and suggested
remedies (Table 6).
ATTENTION

Before remedying operating faults, check all measuring instruments used for reliability and

accuracy.
Table 5
FAULTS

10

POSSIBLE CAUSES

Pump doesnt deliver any water after start-up

1-5-7-10-11-13

Flow is going down or no flow at all

2-3-8-14

Driver overloaded

9-12-17-18-19-27-28

Bearings overheating

19-20-21-22-24

Vibration on pump

15-16-19-23-25

Noise level is high

4-6-26

Table 6
POSSIBLE CAUSES

REMEDIES

There may be air existing in pump or

suction pipe

Fill pump and suction pipe completely with liquid and repeat the priming
procedure.

Ingress of air through shaft seal,

suction pipe or suction port. Pump
lifts liquid with air

Check for leaks in suction pipe joints and fittings. Check shaft seal if
necessary increase the pressure of sealing liquid. Check the dept of
suction pipe or foot valve in the liquid and if necessary increase the
depth of them.

Air pocket in the suction pipe.

Check the slope of the suction line make sure that there is no reason
for formation of air pockets

There is air in liquid

Suction pipe is not submerged enough creating vortex. Check liquid

level in suction tank or increase the depth of suction pipe or foot valve
in the liquid.

Too much suction lift

If no obstruction at inlet check the friction losses of suction line, larger

piping may correct condition. If static lift is too high, the liquid level in
the suction tank must be raised or the pump lowered.

Pump is working at cavitation

conditions

Insufficient manometric head.

The actual total head is higher than that originally specified. Check the
geodetic total head and friction losses in the discharge line. Larger
piping may correct the condition. Check that valves are fully open.

Increase at total manometric head.

Check that valves are fully open. Check that there is any obstruction in
discharge pipe.

Pump is operating at lower

manometric head.

10

Reverse rotation.

11

NPSH available is too low. Check liquid level in suction tank, check
suction line for excessive friction losses. Check isolating valve in
suction line to make sure it is completely open. If necessary increase
suction head on pump by lowering the pump.

The actual total head is lower than that originally specified. Machine
impeller outer diameter to size advised by supplier.
Check motor rotation with directional arrow on pump casing or
nameplate.

Speed is too low.

Check the supply voltage and frequency or motor may have open phase.

12

Speed is too high.

If possible decrease the pump rotational speed or turn down the impeller
outer diameter to size advised by supplier.

13

Impeller or check valve or strainer is

clogged.

Clean the impeller or check valve or strainer

14

Impeller or strainer is clogged partially.

Clean the impeller or strainer.

15

Partially clogged impeller.

Clean the impeller.

16

Worn out and defected impeller.

Replace impeller.

17

Mechanical frictions inside the pump.

Check pump rotor for any rotor obstruction or deflection.

18

Excess tightened soft packing.

Loosen the nuts of the packing gland.

19

Bad coupling alignment.

Check the coupling rubber and realign the coupling.

20

Bearing covers are too tight.

Check and make necessary modification on the cover.

21

The pumped flow is less than the

minimum flow required.

Increase the flow. If necessary use by-pass recirculating valve or line.

22

Existence of excess grease.

Remove excess grease.

23

Oblique shaft.

24

Insufficient lubrication or lubricating

oil/grease dirty, contaminated.

Check the shaft and replace it if necessary.

Check the amount of oil/grease. Clean the bearings and bearing
housing and relubricate

25

Unbalanced rotating parts.

Check the balance of the rotating parts.

26

Pump runs out of duty range.

Check the values of operating point.

27

The density or viscosity of the liquid

pumped is higher than that originally
specified.

Use a more powerful motor.

28

Defects in motor.

Check any motor defects. The motor may not be ventilated properly
due to a poor location.

11

I- TIGHTENING TORQUES
Tightening Torques
Tightening Torque max (N.m)
Thread Diameter

Property Classes

M4

8.8
3.0

10.9
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

J- EXPECTED NOISE VALUES

Power of Motor
PN
(kW)
< 0.55
0.75
1.1
1.5
2.2
3
4
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90

Sound pressure level (dBA) *

(Pump with motor)

1450 rpm
60
60
62
63
64
65
66
67
69
70
72
73
74
75
75
76
77
78
79

2900 rpm
64
66
66
68
69
70
71
73
74
76
77
78
79
81
82
82
84
85
85

(*) 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.

12

K- PERMISSIBLE FORCES AND MOMENTS AT THE PUMP FLANGES

Type
40-125
40-160

DN

Fx

Fy

Fz

Fb

Mx

My

Mz

Mb

40

410

380

470

730

280

400

200

700

50

560

510

620

980

330

450

250

780

65

710

640

790

1200

380

500

300

850

80

840

770

940

1500

400

550

330

930

100

1100

1000

1300

2000

480

630

380

1100

125

1400

1300

1600

2500

630

800

500

1300

150

1700

1500

1900

2900

780

1000

630

1600

200

2300

2000

2500

3900

1100

1400

900

2200

40-200
50-125
50-160
50-200
50-250
65-125
65-160
65-200
65-250
65-315
80-125
80-160
80-200
80-250
80-315
100-160
100-200
100-250
100-315
100-400
125-200
125-250
125-315
125-400
125-450
150-250
150-315
150-400
200-315
200-400

* Forces in Newton [N], moments in Newton x Meter [N.m].

** Values are applicable for casing material Grey Cast Iron (EN-JL-250 / GG25).
Higher values are permissible for steel construction pumps.
ATTENTION
The real forces and moments which affects on flanges must be
smaller than the values given in the table.

FY

FX
FZ

FY

FX
FZ

13

L- PUMP DIMENSION GROUPS AND WEIGHTS

2900 rpm

Pump
Type
40-125

40-160

40-200

50-125

50-160

50-200

50-250

65-125

65-160

65-200

14

Motor
kW
IEC
1.1
1.5
2.2
3
3
4
5.5
4
5.5
7.5
11
1.5
2.2
3
4
5.5
7.5
3
4
5.5
7.5
11
5.5
7.5
11
15
11
15
18.5
22
30
3
4
5.5
7.5
5.5
7.5
11
11
15
18.5
22

80M
90S
90L
100L
100L
112M
132S
112M
132S
132S
160M
90S
90L
100L
112M
132S
132S
100L
112M
132S
132S
160M
132S
132S
160M
160M
160M
160M
160L
180M
200L
100L
112M
132S
132S
132S
132S
160M
160M
160M
160L
180M

Dim.
S
Group mm

50

Weight
(kg)
36
40
42
46
48
54
67
61
81
88
92
43,5
46,5
52
60
75
81
47,5
57
78
85
93
85
92
121
132
135
146
155
160
194
52
58
79
86
84
91
98
129
140
152
181

Pump
Type
65-250

80-125

80-160

80-200

80-250

100-160

100-200

100-250

125-200
125-250

Motor
kW
IEC
15
18.5
22
30
37
4
5.5
7.5
11
15
11
15
18.5
11
15
18.5
22
30
37
22
30
37
45
55
11
15
18.5
22
22
30
37
45
37
45
55
37
45
55
45
55

160M
160L
180M
200L
200L
112M
132S
132S
160M
160M
160M
160M
160L
160M
160M
160L
180M
200L
200L
180M
200L
200L
225M
250M
160M
160M
160L
180M
180M
200L
200L
225M
200L
225M
250M
200L
225M
250M
225M
250M

Dim.
S
Group mm

50

50

Weight
(kg)
144
160
175
235
295
66
83
90
100
116
136
148
151
136
143
159
189
240
290
190
250
310
320
350
146
185
175
201
200
251
305
335
300
326
346
315
345
350
340
360

1450 rpm
Pump
Type
40-125
40-160

40-200

50-125

50-160

50-200

50-250

65-125

65-160

65-200

65-250

65-315

80-125

80-160

80-200

80-250

Motor
kW
IEC
0.37
0.37
0.55
0.75
0.55
0.75
1.1
0.37
0.55
0.75
0.37
0.55
0.75
1.1
1.5
0.75
1.1
1.5
2.2
1.5
2.2
3
0.37
0.55
0.75
1.1
1.5
0.75
1.1
1.5
1.1
1.5
2.2
3
2.2
3
4
5.5
3
4
5.5
7.5
11
0.37
0.55
0.75
1.1
1.5
0.55
0.75
1.1
1.5
2.2
1.1
1.5
2.2
3
4
2.2
3
4
5.5

71M
71M
80M
80M
80M
80M
90S
71M
80M
80M
71M
80M
80M
90S
90L
80M
90S
90L
100L
90L
100L
100L
71M
80M
80M
90S
90L
80M
90S
90L
90S
90L
100L
100L
100L
100L
112M
132S
100L
112M
132S
132M
160M
71M
80M
80M
90S
90L
80M
80M
90S
90L
100L
90S
90S
100L
100L
112M
100L
100L
112M
132S

Dim.
Group

S
mm

50

55

50

55

Weight
(kg)
31
35
37
38,5
39
41
43,5
34
38,5
40
35
38
39,5
43
45
51
53
55
57
63
67
70
39
41
42,5
46,5
49
45
49
52
59
61
67
70
73
76
81
102
121
131
138
149
160
46
48
49,5
54
56
55
57
59
61
65
63
66
70
73
76
88
91
108
128

15

Pump
Type
80-315

100-160

100-200

100-250

100-315

100-400

125-200

125-250

125-315

125-400

125-450

150-250

150-315

150-400

200-315

200-400

16

Motor
kW
IEC
5.5
7.5
11
15
1.5
2.2
3
3
4
5.5
7.5
4
5.5
7.5
11
7.5
11
15
18.5
15
18.5
22
30
37
3
4
5.5
7.5
5.5
7.5
11
15
11
15
18.5
22
30
22
30
37
45
45
55
11
15
18.5
22
15
18.5
22
30
37
37
45
55
18.5
22
30
37
45
37
45
55

132S
132M
160M
160L
90L
100L
100L
100L
112M
132S
132S
112M
132S
132M
160M
132M
160M
160L
180M
160L
180M
180L
200L
225S
100L
112M
132S
132M
132S
132M
160M
160L
160M
160L
180M
180L
200L
180L
200L
225S
225M
225M
250M
160M
160L
180M
180L
160L
180M
180L
200L
225S
225S
225M
250M
180M
180L
200L
225S
225M
225S
225M
250M

Dim.
Group

S
mm
55

B
50

55

50

55

55

C
60

55

60

Weight
(kg)
160
168
205
245
65
70
73
92
96
121
132
120
136
146
174
178
225
240
253
270
293
307
356
403
116
123
148
159
158
169
198
213
241
273
273
292
324
336
385
432
469
574
594
262
276
294
315
290
319
327
376
423
483
520
540
384
392
441
488
522
493
527
550

M1- SECTIONAL DRAWINGS (FOR MOTOR FRAME SIZE UP TO 200)

600
380

046

012
420
405

060
067

001

021*
050
011

210

065

020*

PART LIST
001

Volute Casing

067

Sepecer Sleve

011

Base Plate

085

Rigid Coupling

012
*020

Motor Pedestal
Wear Ring (Casing)

210
340

Impeller Key
Allen Bolt

*021

Wear Ring (Casing Cover)

370

Washer

046

Casing Cover

380

Set-Screw

050
060

Impeller
Pump Shaft

405
420

Mechanical Seal
O-Ring

065

Impeller Nut

600

Electric Motor

* Optional

17

M2- SECTIONAL DRAWINGS (FOR MOTOR FRAME ABOVE 200)

600
012
380

085

370
405
340
067

046

420

060

021*

001

050

011

18

210

065

*020

N- PERMISSIBLE INSTALLATION ARRANGEMENTS

A-B

A- B

A-B-C
A- B

Note : Letters A, B and C represent pump dimension groups (See section L for pump dimension groups).
Fig. 10

O- SAFETY GUARDI

Safety Guard

Note: All guards are conforming to EN 294.

19

EC DECLARATION OF CONFORMITY
Products: Pumps of type SNL with motor
Manufacturer:
Standart Pompa ve Makina San. Tic. A..
Organize San. Blgesi 2. Cad. No:9
34775 Esenkent / mraniye / STANBUL / TURKEY
t: +90 216 466 89 00 f: +90 216 499 05 59
www.standartpompa.com / info@standartpompa.com
The manufacturer herewith declares that the described products meet the essential requirements of Machinery
Directive 2006/42/EC and Low Voltage Directive 2006/95/EC.
Harmonised standards applied are;
- EN 809
- EN ISO 12100:2010
- EN 60204-1

eref T. ELEB
General Vice Manager
th
stanbul, 12 January 2012
The product is marked with

on its name plate.

MANUFACTURER DECLARATION OF CONFORMITY

Products: Pumps of type SNL (bareshaft)
Manufacturer:
Standart Pompa ve Makina San. Tic. A..
Organize San. Blgesi 2. Cad. No:9
34775 Esenkent / mraniye / STANBUL / TURKEY
t: +90 216 466 89 00 f: +90 216 499 05 59
www.standartpompa.com / info@standartpompa.com
The manufacturer herewith declares that the described products meet the essential requirements of Machinery
Directive 2006/42/EC.
Before the pump is put into operation, the machinery unit in which the pump is functioning to be declared in
conformity to relevant regulations.
Harmonised standards applied are;
- EN 809
- EN ISO 12100:2010

eref T. ELEB
General Vice Manager
th
stanbul, 12 January 2012

20

Factory - Center

Right reserved to change without notice.

No responsibility is accepted because of printing errors.

Service and Spare Parts