Desmi ESLV Series Troubleshooting guide

OPERATION AND MAINTENANCE INSTRUCTIONS
DESMI end suction centrifugal pump
ESLV and ESLH Monobloc
DESMI Pumping Technology A/S
Tagholm l, DK-9400 Nørresundby, Denmark
Tel.:
[phone]
Fax:
[phone]
E-mail:
[email protected]
Internet:
www.desmi.com
Manual:
T1528
Language:
English
Revision:
F(11/2019)
Special pump No. ...............................................

_______________________________________________________________________________
DESMI Pumping Technology A/S 2
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
Table of Contents
1. PRODUCT DESCRIPTION ...............................................................................................................................4
1.1 DELIVERY ......................................................................................................................................................4
2. TECHNICAL DATA .........................................................................................................................................4
2.1 EXPLANATION OF THE TYPE NUMBER ..........................................................................................................4
2.2 TECHNICAL DESCRIPTION.............................................................................................................................5
3. INSTALLATION..............................................................................................................................................6
3.1 MOUNTING/FASTENING ..............................................................................................................................6
3.2 WIRING.........................................................................................................................................................6
4. TRANSPORT/STORAGE.................................................................................................................................7
5. DISMANTLING..............................................................................................................................................8
5.1 DISMANTLING OF ESLV/H25/40/65/80/100-180 .........................................................................................8
5.2 DISMANTLING OF ESLV/H65-180M, ESLV/H80/100-180N .........................................................................10
5.3 INSPECTION................................................................................................................................................11
6. ASSEMBLING..............................................................................................................................................12
6.1 FITTING SEALING RINGS (ESLV/H40-180 12-COMBINATION) .....................................................................12
6.2 FITTING SHAFT (ESLV/H40-180 12-COMBINATION) ...................................................................................12
6.3 FITTING SHAFT SEAL ...................................................................................................................................12
6.4 FITTING IMPELLER ......................................................................................................................................12
6.5 FITTING SHAFT SEAL COVER OR MOTOR BRACKET (ESLV/H40-180 12-COMBINATION).............................12
6.6 FITTING MOTOE FOR ESLV/H 65-180M AND ESL80/100-180N...................................................................12
6.7 SHAFT .........................................................................................................................................................13
7. FROST PROTECTION ...................................................................................................................................13
8. START-UP...................................................................................................................................................14
8.1 START-UP ...................................................................................................................................................14
9. SYSTEM BALANCING ..................................................................................................................................14
10. INSPECTION AND MAINTENANCE.............................................................................................................16
10.1 DRAINING THE PUMP ...............................................................................................................................16
11. REPAIRS ...................................................................................................................................................16
11.1 ORDERING SPARE PARTS ..........................................................................................................................16
11.2 REPLACING THE IMPELLER........................................................................................................................16
11.3 REPLACING SEAL RINGS (ESLV/H40-180 12) .............................................................................................16
11.4 REPLACING SHAFT SEAL (22) ....................................................................................................................16
11.5 REPLACING BALL BEARINGS IN MOTOR....................................................................................................17
12. OPERATING DATA ....................................................................................................................................18
13. EU DECLARATION OF CONFORMITY .........................................................................................................19
14. INFORMATION RELEVANT FOR DISASSEMBLY OR DISPOSAL AT END-OF-LIFE ..........................................20
15. ASSEMBLY DRAWING ESLV/H25-180/-12-COMB......................................................................................21
16. ASSEMBLY DRAWING ESLV/H40-180/-12-COMB......................................................................................22
17. ASSEMBLY DRAWING ESLV/H65-180/-12-COMB......................................................................................23
18. ASSEMBLY DRAWING ESLV/H80-180E/-12-COMB ....................................................................................24
19. ASSEMBLY DRAWING ESLV/H100-180/-12-COMB ....................................................................................25

_______________________________________________________________________________
DESMI Pumping Technology A/S 3
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
20. ASSEMBLY DRAWING ESLV/H80/100-180N/-12 AND ESLV/H65-180M/-12-COMB ...................................26
21. DIMENSIONAL SKETCH.............................................................................................................................27

_______________________________________________________________________________
DESMI Pumping Technology A/S 4
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
1. PRODUCT DESCRIPTION
These operation and maintenance instructions apply to the DESMI ESLV and ESLH Monobloc
pump.
The pump is a single-stage end suction centrifugal pump equipped with stainless steel shaft,
mechanical shaft seal, and closed impeller.
The impeller is mounted on the motor shaft at a shaft extension. The pumps are equipped with
a mechanical seal shaft and have holes in the bracket for inspection of leaks.
1.1 DELIVERY
- Check on delivery that the shipment is complete and undamaged.
- Defects and damages, if any, to be reported to the carrier and the supplier
immediately in order that a claim can be advanced.
2. TECHNICAL DATA
The pumps are manufactured in various material combinations which appear from the type
number on the name plate. See below.
2.1 EXPLANATION OF THE TYPE NUMBER
All the ESLV/H pumps are provided with a name plate. The type number indicated on the
name plate is built up as follows:
ESLVXXX-YYY-MR-Z or ESLHXXX-YYY-MR-Z
XXX: Pressure branch diameter, YYY: Standard impeller diameter
M: The material combination of the pump.
R: The assembly combination of the pump.
Z: Other variants
M may be the following:
A: Casing and shaft seal cover : Cast iron + cast iron alloy. Impeller and sealing rings:
Bronze
B: Casing and shaft seal cover : Cast iron + cast iron alloy. Impeller and sealing rings:
Stainless.
C: All cast iron
D: Casing and shaft seal cover: Bronze. Impeller and sealing rings: Bronze
S: Casing, shaft seal cover, impeller and sealing rings: SAF2507 and stainless steel alloy
E: Special materials
U: Nonmagnetic material
The pumps can be delivered in other material combinations according to agreement with the
supplier.
R may be the following:
12: Monobloc, without bearing in the pump
Z may be the following:
i : PN16 flanges

_______________________________________________________________________________
DESMI Pumping Technology A/S 5
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
j : PN25 flanges
k : Special flange
l : Other shaft seal
m : BS flanges
n : ANSI flanges
o : Shockproof design
p : Other design
q : JIS flanges
Any use of the pump is to be evaluated on the basis of the materials used in the pump. In case
of doubt, contact the supplier.
Pumps in material combinations A and C are primarily used for fresh water.
Pumps in material combination D are primarily used for seawater.
If the pumps are designed for special purposes the following is to be indicated:
Pump No. :
Pump type :
Application :
Comment :
2.2 TECHNICAL DESCRIPTION
The noise level indicated is the airborne noise including the motor. The noise depends on the
motor type supplied, as the noise from the pump can be calculated as the noise level of the
motor + 2dB(A). The noise level is for pumps with electric motors.
The capacity of the pump appears from the name plate on the pump. If the pump has been
delivered without motor, the pump capacity is to be indicated on the plate when mounting the
motor.
The permissible loads on the flanges appear from the following table. The values apply to
standard pumps in bronze (Rg5) and cast iron (GG20). As to pumps in SG iron (GGG40) the
values are to be increased by factor 1.5.

_______________________________________________________________________________
DESMI Pumping Technology A/S 6
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
DN
mm
Forces (N)
Torques (Nm)
FY
Fz
FX
F
My
Mz
Mx
M
25
40
50
65
80
100
250
400
500
650
800
1000
320
500
600
840
950
1250
250
400
550
750
850
1150
480
750
1000
1340
1500
2000
300
400
450
510
550
650
150
200
250
310
350
400
260
300
350
380
400
500
420
550
600
700
750
900
In connection with the permissible loads on the flanges the following is to be observed:
2
2
.
2
.






















epermissiblMax
M
calculated
M
epermissiblMax
F
calculated
F
where index “calc”is the values calculated by the user.
At the same time none of the forces or moments may exceed the indicated figure multiplied
by 1.4.
3. INSTALLATION
3.1 MOUNTING/FASTENING
The pump should be mounted and fastened on a solid base plate or wall mounted frame so
distortion is avoided.
When installing the pump check that it is earthed to avoid an electrical potential in the pump.
The max. permissible loads on the flanges stated in paragraph 2.2 are to be observed.
At installations pumping hot or very cold liquids, the operator must be aware
that it is dangerous totouch thepump surface and, consequently, he must take
the necessary safety measures.
3.2WIRING
Wiring to be carried out by authorised skilled workmen according to the rules and
regulations in force.

_______________________________________________________________________________
DESMI Pumping Technology A/S 7
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
4. TRANSPORT/STORAGE
The weights of the pumps in A and D combination (without motor) are stated in the following
table, and the pumps are to be lifted as shown below.
Pump
Weight in kg A12 / D12
comb. without base plate
ESLV/H 25-180
31/33
ESLV/H 40-180
36/39
ESLV/H 65-180
48/55
ESLV/H 65-180M
51/57
ESLV/H 80-180E
52/60
ESLV/H80-180N
55/62
ESLV/H 100-180
65/75
ESLV/H100-180N
68/76
The pump is to be stored in a dry area.
Before shipment the pump is to be fastened securely on pallets or the like.
The pump is to be lifted in the following way:
The lifting straps must not bear against sharp edges and corners.

_______________________________________________________________________________
DESMI Pumping Technology A/S 8
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
5. DISMANTLING
Before dismantling the pump make sure that it has stopped. Empty the pump of
liquid before it is dismantled from the piping system. If the pump has been
pumping dangerous liquids you are to be aware of this and take the necessary
safety measures.
If the pump has been pumping hot liquids, take great care that it is drained
before it is removed from the piping system.
5.1DISMANTLING OF ESLV/H25/40/65/80/100-180
Before dismantling
1.Remove nut (15) and
stud(14);
2.Remove screw(20) and
washer(23);

_______________________________________________________________________________
DESMI Pumping Technology A/S 9
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
3.Remove the
impeller(7)and the
key(19);
4.Remove set screw (10) ;
5.Remove pointed screw(24),
pull casing cover(4) and stop
ring(21) and shaft seal(22) and
motor with shaft apart;
6.Press out the seat(22);
7.If necessary, remove
pointed screw(11) to pull off
the shaft.

_______________________________________________________________________________
DESMI Pumping Technology A/S 10
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
5.2 DISMANTLING OF ESLV/H65-180M, ESLV/H80/100-180N
Before dismantling
1. Remove nut (15)
2. Remove screw (20) and
washer (23)
3. Remove impeller (2)
and key (19)
4. Remove shaft seal (22)
and rear cover (4)
5. Remove set screw (10)

_______________________________________________________________________________
DESMI Pumping Technology A/S 11
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
5.3 INSPECTION
When the pump has been dismantled, check the following parts for wear and damage:
- Sealing ring/impeller: Max. clearance 0.3-0.6 mm measured in radius.
- Shaft seal/shaft seal cover: Check the seat for flatness and cracks.
Check the rubber parts for elasticity.
6. Remove motor bracket
(7)
7. If necessary, remove the
pointed screw (11) to pull
off the motor coupling

_______________________________________________________________________________
DESMI Pumping Technology A/S 12
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
6. ASSEMBLING
Referring to the reverse process of dismantling.
6.1 FITTING SEALING RINGS (ESLV/H40-180 12-COMBINATION)
When fitted the wear ring (17, ESLV/H25 and ESLV/H40 don’t have this part) is to bear
against the shoulder of the pump casing (1).
When fitted the wear ring (16) is to bear against the shoulder of the casing cover (4).
6.2 FITTING SHAFT (ESLV/H40-180 12-COMBINATION)
Fit the shaft flange (8) and the shaft (6) in the motor, then fit the pointed screw (11).
6.3FITTING SHAFT SEAL
Before fitting the seat, clean the recess in the shaft seal cover or the motor bracket
(ESLV/H40-180 12-combination). When fitting the seat, remove the protective coating
without scratching the lapped surface. Dip the outer rubber ring of the seat into soapy water.
Now press the seat into place with the fingers and check that all parts are correctly
imbedded.
If it is necessary to use tools for assembling, then protect the sliding surface of the seat to
prevent it from being scratched or cut. Lubricate the inner surface of the slide ring rubber
bellows with soapy water and push it over the shaft. The use of a conical fitting bush as
shown on the assembly drawing is recommended to avoid that the rubber bellows is cut.
Push the slide ring over the shaft with the hand. If the rubber bellows is tight, use a fitting
tool and take care that the slide ring is not damaged. If the carbon ring is not fixed, it is
important to check that it is fitted correctly, i.e. the chamfered/lapped side is to face the seat.
The carbon ring can be held by a little grease.
When using soapy water on the shaft, the bellows will settle and seat in abt. 15 minutes, and
until then tightness should not be expected. After start, check by viewing the leak hole that
there are no leaks.
6.4FITTING IMPELLER
Fit the sunk key in the shaft and lead the impeller towards the shoulder of the shaft. Fit the
stop ring (21) before the impeller (7)(ESLV/H40-180/-12). Take care that the ring at the end
of the shaft seal spring locates in the recess of the impeller. Secure the impeller with
washers (23) and a screw (20) .
6.5FITTING SHAFT SEAL COVER OR MOTOR BRACKET (ESLV/H40-180 12-
COMBINATION)
Place the O-ring (3) (or gasket in ESL25-180 12) between pump casing and shaft seal cover
(or motor bracket in ESL25-180 12 combination) in the O-ring groove and hold it with a little
grease. However, check the material of the O-ring first. As standard the material is nitrile, but
it might be EPDM which will be damaged by mineral grease. Use soft soap or silicone
grease for EPDM. Fit and fasten shaft seal cover or motor bracket, mounted with the electric
motor, in the pump casing. Screw the pointed screws back into the shaft seal cover before
tightening.
6.6 FITTING MOTOE FOR ESLV/H 65-180M AND ESL80/100-180N
Fit the motor coupling (8) to motor shaft and tighten the pointed screw (11) slightly,
place motor onto bracket (7) and tighten the set screw (10). Add 2 shims (301)
between motor coupling (8) and pump shaft flange (6), adjust the motor coupling to
make it resist on the shims to ensure it is at the right axial position. Tighten the

_______________________________________________________________________________
DESMI Pumping Technology A/S 13
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
pointed screw (11) and remove the shims (301). Tighten the set screw (25) to lift up
the impeller to a right position.
Regarding the tightening torque of pointed screw (11, 311 in ESL40/50-180N)
Motor Size
Dimension Point
Screws
Torque Pointed
Screws
71/80
M6
10Nm
90/100/112/132/160
M8
24Nm
6.7SHAFT
When the pump has been assembled, check that the shaft rotates freely. In case the shaft
has been dismantled in the combination, tap the shaft towards the shaft end of the electric
motor by means of a plastic hammer, and fasten the pointed screws (first the middle screw)
according to the below table. Check that the wobble, measured as close to the shaft end as
possible, is within the limits indicated in the table.
Motor size
Dimension
Pointed screws
Torque
Pointed screws
Max. wobble
71
M6
10 Nm
70 μm
80
M6
10 Nm
70 μm
90
M8
24 Nm
70 μm
100/112
M8
24 Nm
70 μm
132
M10
40 Nm
70 μm
160
M12
75 Nm
70 μm
7. FROST PROTECTION
Pumps which are not in operation during frost periods are to be drained to avoid frost
damage. Remove the plug at the bottom to empty the pump. Alternatively, it is possible to
use anti-freeze liquids in normal constructions.

_______________________________________________________________________________
DESMI Pumping Technology A/S 14
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
8. START-UP
A centrifugal pump will not function until it has been filled with liquid between the foot
valve and somewhat above the impeller of the pump.
The liquid also serves as coolant for the shaft seal. In order to protect the shaft seal
the pump must not run dry.
ATTENTION
For safety reasons the pump is only allowed to operate against closed discharge valve for a
short time (max. 5 minutes and at a max. temperature of 80°C for standard pumps).
Otherwise there is a risk of damage to the pump and, at worst, of a steam explosion. If the
pump is not monitored, the installation of a safety device is recommended.
8.1 START-UP
Before starting the pump check that:
- the shaft rotates freely without jarring sounds.
- the pump casing and the suction line are filled with liquid.
Start the pump for a moment to check the direction of rotation. If the direction is correct (i.e.
in the direction of the arrow) the pump may be started.
In order to protect the shaft seal the pump must never run dry.
If there is a positive suction lift, open the valve on the suction side of the pump and evacuate
the air through the air vent screw (5). If there is no positive suction lift, the plant must be
equipped with a foot valve or a non-return valve on the suction side.
Prime the pump while the air vent screw (5) is kept open. When the pump has been filled
with water, and the air has been evacuated, the system can be started. Check the direction
of rotation. If the direction is incorrect interchange 2 of the power cords. The direction of
rotation is indicated by an arrow. Make sure the bearings are running correctly and that they
do not become warm.
9. SYSTEM BALANCING
It is often difficult to calculate a manometric delivery head in advance. It is, however,
decisively important to the quantity of liquid delivered.
A considerably smaller delivery head than expected will increase the quantity of liquid
delivered, causing increased power consumption and perhaps cavitation in pump and piping.
In the pump the impeller may show signs of heavy erosion caused by cavitation (corrosion)
which may at times render an impeller unfit for use in a very short time. Not unusually do
similar erosions occur in pipe bends and valves elsewhere in the piping system.
Therefore, after start-up, it is necessary to check either the quantity of liquid delivered or the
power consumption of the pump e.g. by measuring the current intensity of the connected
motor. Together with a reading of the differential pressure the quantity of water delivered can
be determined against the characteristics of the pump.
Should the pump not function as intended, please proceed according to the fault-finding list.
Bear in mind, though, that the pump was carefully checked and tested at the factory and that
the majority of faults stem from the piping system

_______________________________________________________________________________
DESMI Pumping Technology A/S 15
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
FAULT
CAUSE
REMEDY
The pump has no
or too low capacity
1. Wrong direction of rotation
2. Piping system choked
3. The pump is choked
4. Suction line leaks
Pump takes air
5. Suction lift too high
6. Pump and piping system
wrongly dimensioned
Change direction of rotation to
clockwise when viewed from
shaft end (the direction of the
arrow)
Clean or replace
Clean the pump
Find the leakage, repair the fault,
non-return valve not submerged
Check data sheet Q/H curve and
NPSH or contact DESMI
As
The pump uses too
much power
1. Counter-pressure too low
2. The liquid is heavier
than water
3. Foreign body in pump
4. Electric motor is
running on 2 phases
Insert orifice plate or check
valve/Contact DESMI
Contact DESMI
Dismantle the pump, remove the
cause
Check fuses, cable connection,
and cable
The pump makes
noise
1. Cavitation in pump
Suction lift too high/ Suction line
wrongly dimensioned/Liquid
temperature too high

_______________________________________________________________________________
DESMI Pumping Technology A/S 16
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
10. INSPECTION AND MAINTENANCE
Inspect the shaft seal for leaks at regular intervals.
- Before inspection of a pump without guard check that the pump cannot be started
unintentionally.
- The system is to be without pressure and drained of liquid.
- The repairman must be familiar with the type of liquid which has been pumped as well
as the safety measures he is to take when handling the liquid.
10.1 DRAINING THE PUMP
When the piping system has been drained, note that there is still liquid in the pump. Remove
the liquid by dismantling the pipe plug (18 or 26 for ESLV/H25) at the bottom of the pump.
11. REPAIRS
11.1 ORDERING SPARE PARTS
When ordering spare parts please always state pump type, serial No. (appears on the name
plate of the pump), position No. on the assembly drawing and designation on the spare parts
list.
The following parts are exposed to wear: Shaft seal (22), impeller (2)/(7), seal rings (16 and
17) and the ball bearings of the motor.
11.2 REPLACING THE IMPELLER
Close the valves on both sides of the pump. Loosen the nuts (15) and dismantle the top piece
from the pump casing. Remove the screw (20) and take off the impeller (2)/(7). Fit the new
impeller.
11.3 REPLACING SEAL RINGS (ESLV/H40-180 12)
When motor and pump have been separated, the seal ring (17, ESLV/H25 and ESLV/H40 has
not this part) in the pump casing (1) can be pulled out.
In order to replace the upper seal ring (16) it is necessary first to dismantle the impeller. Press
the new seal rings into place with an even push all over the face of the ring. Normal diameter
difference between seal ring and impeller 0.3-0.4 mm.
11.4 REPLACING SHAFT SEAL (22)
Dismantling as described in paragraph 5.1.
When the impeller has been dismantled, remove the key (19) and then the stop ring (21) which
is locked with a pointed screw. The sealing element itself can now be pulled off the shaft.
Remove the seat ring from the top piece by pressing with a pair of screwdrivers or the like
under the collar off the seat. If the seat cannot be removed, dismantle the top piece from the
motor to permit pressing from the back.
Clean the bore for seat and shaft thoroughly of dirt and rust. Remove persistent coatings, if
any, by grinding the shaft lightly with very fine emery cloth.

_______________________________________________________________________________
DESMI Pumping Technology A/S 17
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
Grease the new seat ring and the inserted 0-ring well with glycerine –not oil –and press it
into place in the casing. Check that the seat is fitted correctly by knocking lightly with a piece
of wood. The seat ring is to be treated very carefully to prevent the sliding surface from being
scratched.
It is necessary to use a conical bush as shown below to prevent the rubber bellows from being
damaged during mounting.
Grease the back of the carbon ring with glycerine to ensure that it stays in its correct place
during the mounting. Grease the shaft, the conical bush and the rubber bellows amply with
glycerine.
Press the shaft seal on to the shaft until it resists. Press the driving ring only,
Finally place the stop ring (21) on the shaft and lock it with the pointed screw.
When the pump has been mounted, ventilate the pump casing carefully before putting the
pump into operation.
When the pump has been running for 1-2 min., ventilate it again, after which it can start normal
operation.
Do not forget to check the direction of rotation if there is a risk that the power cords to motor
have been exchanged.
11.5 REPLACING BALL BEARINGS IN MOTOR
The ball bearing in the front bearing of the motor can be replaced without disassembling the
pump.
If the ball bearing in the rear bearing of the motor is to be replaced, it is necessary to
disassemble the pump and dismantle the pump shaft (as described in paragraph 5.1):
Dismantle the top piece from the motor .Remove the pointed screws (11) in the pump shaft
(6), the pump shaft can now be pulled off the motor shaft.
When assembling the pump again, check the motor shaft for damages in the form of marks,
burrs, or upsetting of the shaft end.
Damages, if any, are to be remedied by means of a file and fine emery cloth. This work has to
be done very carefully, especially on new motors, the shaft ends of which are often damaged
during transport. If this is not done carefully, the throw will be bigger than permitted and/or the
pump shaft will scratch the motor shaft when fitted.
Normally, the pump shaft is to go relatively smoothly on the motor shaft (manually or by means
of light strokes with a plastic hammer).

_______________________________________________________________________________
DESMI Pumping Technology A/S 18
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
Tighten the pointedscrews (the one inthe middlefirst) in accordance with the torque indicated
in the table and finally check that the throw stays within the indicated limits by means of an
indicator clock.
12. OPERATING DATA
The following working pressures (pressure in piping incl. the pressure increase caused by the
pump) and number of revolutions are allowed in standard pumps.
Pump
Max.
working pressure[bar]
Bronze /Cast iron
Max.
working pressure[bar]
SG-iron
Max.RPM
ESLV/H25-180
16
30
3600
ESLV/H40-180
16
30
3600
ESLV/H50-180
16
30
3600
ESLV/H65-180
10
16
3600
ESLV/H65-180M
10
16
3600
ESLV/H80-180
10
20
3600
ESLV/H80-180B
10
20
3600
ESLV/H80-180E
10
16
3600
ESLV/H80-180N
10
16
3600
ESLV/H100-180
10
16
3600
ESLV/H100-180N
10
16
3600
The max. working pressure for NiAlBz and stainless steel pumps is 1.5 times max. working
pressure for bronze (RG5).
The above-mentioned max. working pressure is a design value –delivered pumps are
pressure tested according to actual application requirements and actual flange standards.
For instance the above-mentioned max. working pressure is NOT valid for pumps approved
by a classification society. Pumps approved by classification societies have been pressure
tested according to the requirements of these societies, i.e. a test pressure of 1.5 x the
permissible working pressure. The test pressure is stated in the test certificate and stamped
into the discharge flange of the pump.

_______________________________________________________________________________
DESMI Pumping Technology A/S 19
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
13. EU DECLARATION OF CONFORMITY
DESMI Pumping Technology A/S, hereby declare that our pumps of the ESLV and ESLH type
are manufactured in conformity with the following essential safety and health requirements in
the COUNCIL DIRECTIVE 2006/42/EC on machines, Annex 1.
The following harmonized standards have been used:
EN/ISO 13857:2008
Safety of machinery. Safety distances to prevent
danger zones being reached by the upper limbs
EN 809:1998 + A1:2009
Pumps and pump units for liquids –Common
safety requirements
EN12162:2001+A1:2009
Liquid pumps –Safety requirements –Procedure
for hydrostatic testing
EN 60204-1:2006/A1:2009
Safety of machinery –Electrical equipment of
machines (item 4, General requirements)
Ecodesign Directive (2009/125/EC)
Water pumps:
Commission Regulation No 547/2012.
Applies only to water pumps marked with the
minimum efficiency
index MEI. See pump nameplate.
Pumps delivered by us connected with prime movers are CE-marked and comply with the
above requirements.
Pumps delivered by us without prime movers (as partly completed machinery) must only be
used when the prime mover and the connection between prime mover and pump comply with
the above requirements.
Nørresundby, March 05 2019
Henrik Mørkholt Sørensen
Managing Director
DESMI Pumping Technology A/S
Tagholm 1
9400 Nørresundby

_______________________________________________________________________________
DESMI Pumping Technology A/S 20
www.desmi.com
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
14.INFORMATION RELEVANT FOR DISASSEMBLY OR DISPOSAL AT END-OF-LIFE
No damage materials are used in DESMI pumps –please refer to DESMI Green Passport
(can be sent on request –contact a DESMI sales office) –i.e. common recycling companies
can handle the disposal at end-of-life. Alternatively the pump and motor can be returned to
DESMI at end-of-life for safe recycling.