Desmi S70-50-175N/A11-09 Troubleshooting guide

OPERATION AND MAINTENANCE INSTRUCTIONS
DESMI self-priming centrifugal pump
Modular S-N Super Bilge Pump
DESMI Pumping Technology A/S
Tagholm 1 –DK-9400 Nørresundby –Denmark
Tel.:
[phone]
Fax:
[phone]
E-mail:
[e-mail]
Internet:
www.desmi.com
Manual:
T1444
Language
English
Revision:
F (11/19)

Table of contents:
1. PRODUCT DESCRIPTION................................................................................................................................. 3
1.1 DELIVERY.............................................................................................................................................................. 3
2. TECHNICAL DATA ............................................................................................................................................. 3
2.1 NAME PLATE......................................................................................................................................................... 3
2.2 EXPLANATION OF THE TYPE NUMBER ......................................................................................................... 4
2.3 TECHNICAL DESCRIPTION...............................................................................................................................4
3. INSTALLATION................................................................................................................................................... 5
3.1 MOUNTING/FASTENING .................................................................................................................................... 5
3.2WIRING...................................................................................................................................................................7
4. TRANSPORT/ STORAGE .................................................................................................................................. 7
5. DISMANTLING..................................................................................................................................................... 7
5.1 ACCESS TO IMPELLER ...................................................................................................................................... 7
5.2 DISMANTLING IMPELLER AND STARWHEEL .............................................................................................. 7
5.3 DISMANTLING SHAFT SEAL..............................................................................................................................7
5.4 DISMANTLING SEAT ........................................................................................................................................... 8
5.5 DISMANTLING SHAFT WITH BEARINGS ........................................................................................................ 8
5.6 INSPECTION .........................................................................................................................................................8
6. ASSEMBLING...................................................................................................................................................... 8
6.1 FITTING SEALING RING IN PUMP CASING.................................................................................................... 8
6.2 FITTING SHAFT WITHBEARINGS....................................................................................................................8
6.3 FITTING WATER DEFLECTOR.......................................................................................................................... 8
6.4 FITTING SHAFT SEAL ......................................................................................................................................... 8
6.5 FITTING STAR WHEEL........................................................................................................................................9
6.6 FITTING IMPELLER.............................................................................................................................................. 9
6.7 FITTING BEARING HOUSING AND SHAFT SEAL COVER...........................................................................9
6.8 SHAFT.....................................................................................................................................................................9
7. FROST PROTECTION........................................................................................................................................ 9
8. DISMANTLING....................................................................................................................................................10
9. START-UP...........................................................................................................................................................10
9.1 STARTING............................................................................................................................................................10
10. SYSTEM BALANCING ....................................................................................................................................10
11. INSPECTION AND MAINTENANCE ..............................................................................................................12
11.1 DRAINING THE PUMP..................................................................................................................................... 12
11.2 BEARINGS......................................................................................................................................................... 12
12. REPAIRS...........................................................................................................................................................12
12.1 ORDERING SPARE PARTS............................................................................................................................12
13. OPERATING DATA..........................................................................................................................................12
14. EC DECLARATION OF CONFORMITY.........................................................................................................13
15. INFORMATION RELEVANT FOR DISASSEMBLY OR DISPOSAL AT END-OF-LIFE............................14
16. ASSEMBLY DRAWING...................................................................................................................................15
17. SPARE PARTS LIST........................................................................................................................................15
18. DIMENSIONAL SKETCH.................................................................................................................................16

DESMI Pumping Technology A/S 3
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
1. PRODUCT DESCRIPTION
These operation and maintenance instructions apply to the DESMI Modular S-N super bilge pump.
The pump is available in three sizes, DN50 DN70 and DN80 on the pressure flange. The suction
flange is bigger than the pressure flange.
The Modular S super bilge pump is a single-stage self-priming centrifugal pump with horizontal inlet
on the centre line and vertical outlet at the top. The pump is equipped with stainless steel shaft and
mechanical shaft seal.
The pump is suitable for the pumping of clean and polluted liquids with temperatures between 0 and
80ºC. Max. number of revolutions: 3600 RPM.
The back of the impeller is equipped with relief blades to reduce the load on the bearings.
Relief holes in the impeller ensure circulation of liquid for the shaft seal and prevent overheating of
the shaft seal during normal operation.
The pump is particularly suitable for bilge pumping.
The pump can further be used for the pumping of water in connection with e.g. cooling of diesel
engines, as ballast pumps, pumps for irrigation, washing plants, air conditioning, cooling systems,
and sanitary systems etc. Furthermore, in the majority of cases where the transport of liquid is
required within industry.
The Modular S-N super bilge pump is a quality product manufactured in accordance with ISO 9001.
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
2.1 NAME PLATE
Manufacturer:
DESMI
DK-9400 Nørresundby
Phone [phone]
Fax [phone]
e-mail: [e-mail]
http:\\www.desmi.com
TYPE: Pump type number
CODE NO.: Pump item No.
PUMP NO.: Pump No.
IMP.: Impeller diameter
WEEK/YEAR: Production week and year

DESMI Pumping Technology A/S 4
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
The pumps are manufactured in various material combinations which appear from the type number
on the name plate.
2.2 EXPLANATION OF THE TYPE NUMBER
The super bilge pump is provided with a name plate. The type number indicated on the name plate
is built up as follows:
S-XXX-YYY-ZZZN/M11-R
XXX,YYY,ZZZ : Pump size where
XXX=Suction branch diameter, YYY=Pressure branch diameter, ZZZ =Standard impeller diameter.
M : The material combination of the pump.
R : The assembly combination of the pump.
M may be the following:
A : Standard. Casing: GG20. Impeller: NiAlBz.
C : Pump in all cast iron.
D : Casing: Rg5, Impeller: NiAlBz.
E : Casing and shaft seal cover: NiAlBz and bronze alloy. Impeller and sealing rings: NiAlBz.
U : Nonmagnetic
The pumps can be delivered in other material combinations which are agreed with the supplier.
R may be the following:
01 : With electromagnetic clutch.
03 : With hydraulic motor.
04 : V-belt pulley and disengaging clutch.
07 : On base plate with petrol or diesel engine, or with electric motor.
08 : Mounted on trolley with petrol or diesel engine or with electric motor.
09 : With bare shaft end.
10 : Special-tailored according to task.
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.
2.3 TECHNICAL DESCRIPTION
The noise level of the pump 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 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 name plate when mounting the
motor.
The permissible loads on the flanges appear from the following table.

DESMI Pumping Technology A/S 5
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
Pump
Fv
[N]
Fh
[N]
F
[N]
Mt
[Nm]
S70-50-175N/A and D11
1350
1000
1700
200
S80-70-175N/A and D11
1450
1050
1800
270
S100-80-175N/A and D11
1800
1250
2200
470
In connection with the permissible loads on the flanges the following is to be observed:
VZinZout FFF 
3
2
hYoutXoutYinXin FFFFF  2222
tZoutYoutXoutZinYinXin MMMMMMM  222222
2
22






















t
calccalc
M
M
F
F
where index "in" is suction branch, "out" is pressure branch, and "calc" are the values calculated by
the user.
3. INSTALLATION
3.1 MOUNTING/FASTENING
The pump should be mounted and fastened on a solid base plate with a flat and horizontal surface
to avoid distortion. The pump must be mounted in such a way that the shaft center line is
horizontal.
The max. permissible loads on the flanges stated in paragraph 2.3 are to be observed.
When mounting a V-belt pulley on the pump a bore H7 is recommended. To facilitate the mounting
the hub in the V-belt pulley may be heated to about 100ºC after which the V-belt pulley is easily
lead over the shaft towards the shoulder. Alternatively, the V-belt pulley may be mounted with a
TAPER LOCK bush.

DESMI Pumping Technology A/S 6
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
When
dimensioning the V-belt pulley it is important to follow the rules of the DESMI nomograms for the
pump size in question - contact DESMI.
Be careful when fitting the suction line to the pump so that it is absolutely tight, as even small
leakages may impede the priming. When pumping polluted liquids a strainer is necessary. The
strainer must be equipped with a sieve, the passage area of which is to be 3 x the area of the
suction pipe. The mesh size is to be 1-3 mm smaller than the impeller gap of the pump in question.
In order to secure priming of the pump the pressure pipe is to be arranged so that water locks in
the pipe are avoided.
If the pump is to be driven by a motor via a flexible coupling, motor and pump are to be placed on a
common base plate. The following should be observed:
- Avoid distortion of the base plate.
- Avoid distortion in the piping system.
- Check that pump and motor are aligned correctly.
Two proposals for alignment are indicated above. The deviations mentioned cover a complete
revolution of the coupling. The distance between the coupling halves is to be between 2 and
4 mm.
At installations pumping hot or very cold liquids, the operator must be aware that it is
dangerous to touch the pump surface, and, consequently, he must take the necessary
safety measures.
When connecting the pump and a prime mover the power transmission is to be
equipped with a guard in accordance with the provisions of the COUNCIL DIRECTIVE.

DESMI Pumping Technology A/S 7
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
3.2WIRING
Wiring to be carried out by authorised skilled workmen according to the rules and
regulations in force.
4. TRANSPORT/ STORAGE
The weights of the pumps (in A11-09 combination) are stated in the following table, and the pumps
are to be lifted as shown.
Pump
Weight [kg]
S70-50-175N/A11-09
52
S80-70-175N/A11-09
63
S100-80-175N/A11-02
98
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 as shown here:
The lifting straps must not bear against sharp edges and corners.
5. DISMANTLING
5.1 ACCESS TO IMPELLER
Remove Allen screws (44), which hold the U-pipe with flanges (45) to the pump casing and shaft
seal cover. Remove Allen screws (22), which hold the shaft seal cover (20) to the pump casing,
and pull the bearing housing (18) to remove the complete bearing housing with impeller, bearings,
and shaft.
5.2 DISMANTLING IMPELLER AND STARWHEEL
Remove nut (6) and washers (7-8). Pull off the impeller (5). Remove Allen screws (35), which hold
the priming plate to the shaft seal cover. Remove the priming plate (33), make sure not to damage
the O-ring (34). Unfasten pointed screw (43) and dismantle the star wheel (31).
5.3 DISMANTLING SHAFT SEAL
Before dismantling shaft seal (10), remove the sunk key (32). Remove Allen screws (19) which
hold the bearing housing to the shaft seal cover. Pull shaft seal cover and bearing housing apart,
by which shaft seal and water deflector are pulled off the shaft.

DESMI Pumping Technology A/S 8
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
5.4 DISMANTLING SEAT
Press out the seat from behind the shaft seal.
5.5 DISMANTLING SHAFTWITH BEARINGS
Before dismantling the shaft (17) with bearings (13-15), remove the sunk key (16). The shaft can
now be pulled out of the bearing housing allowing inspection of the bearings.
5.6 INSPECTION
When the pump has been dismantled, check the following parts for wear and damage:
- Sealing ring/impeller: Max. clearance 0.4-0.5 mm measured in radius.
- Shaft seal/shaft seal cover: Check the seat for flatness and cracks.
Check the rubber parts for elasticity and scratches.
- Bearing: Replace in case of wear and noise.
- Star wheel: Check the priming plate and shaft seal cover for marks.
Distance between shaft seal cover, star wheel, and the priming
plate:
approx. 0.25 mm.
- Non-return flap: Check for cracks and hardness
6. ASSEMBLING
6.1 FITTING SEALING RING IN PUMP CASING
When fitted, the sealing ring (4) is to bear against the shoulder of the pump casing.
6.2 FITTING SHAFTWITH BEARINGS
Lead shaft with bearings into the bearing housing. Fit sunk key (16).
6.3 FITTINGWATER DEFLECTOR
Assemble the bearing housing and the shaft seal cover. Lead the water deflector over the shaft
until it touches the shaft seal cover and then further 1-1.5 mm into the shaft seal cover
6.4 FITTING SHAFT SEAL
Before fitting the seat, clean the recess in the shaft seal cover. When fitting the seat, remove the
protective coating, if any, 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 diameter of the slide ring
rubber bellows with soapy water and push it over the shaft. The use of a fitting bush as shown on
the below 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.

DESMI Pumping Technology A/S 9
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
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 oil on the shaft, the bellows will settle and seat in about 15 minutes, and until then
tightness should not be expected. After start, check by viewing the leak hole that there are no
leaks.
6.5 FITTING STARWHEEL
Fit the sunk key (32). Lead the star wheel over the shaft, check that the distance between star
wheel and shaft seal cover is about 0.25 mm. Fasten the star wheel by means of the pointed screw
(43) which must be secured by Loctite or similar. Fit the priming plate, make sure that the O-ring is
placed correctly in the groove and that the guide pin locates in the hole. Check that the distance
between star wheel and priming plate is about 0.25 mm.
6.6 FITTING IMPELLER
Fit the sunk key (9) in the shaft and lead the impeller towards the shoulder of the shaft. Take care
that the ring at the end of the shaft seal spring locates in the recess of the impeller. Secure the
impeller with a washer (8) and a nut (7).
6.7 FITTING BEARING HOUSING AND SHAFT SEAL COVER
Place the gasket (21) and the O-ring (40) between pump casing and shaft seal cover on the shaft
seal cover where it can be held with a little silicone grease. Lead bearing housing with shaft seal
cover into place and fasten. Finally fit the U-pipe on pump casing/shaft seal cover.
6.8 SHAFT
When the pump has been assembled, check that the shaft rotates freely.
7. FROST PROTECTION
Pumps which are not in operation during frost periods are to be drained to avoid frost damage.
Remove the plug in the inlet cover to empty the pump. Alternatively, it is possible to use anti-freeze
liquids in normal constructions.
Fitting bush

DESMI Pumping Technology A/S 10
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
8. 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. If cold or very hot liquids have
been pumped, the operator must be aware that it is dangerous to touch the pump
surface and he must, consequently, take the necessary safety measures.
9. START-UP
A self-priming centrifugal pump will not function until the pump casing has been filled
with liquid.
The liquid also serves as coolant for the shaft seal. In order to protect the shaft seal
the pump must not run dry.
WARNING
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.
To protect the pump against unintentional operation it is equipped with a relief valve which opens
at a preset pressure.
Be careful: When the valve opens, the escaping liquid will be hot.
The relief valve must in no circumstances be removed or re-adjusted !
As regards maintenance of the relief valve - see paragraph 11.
9.1 STARTING
Before starting the pump check that
- the shaft rotates freely without jarring sounds
- the pump casing is 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.
10. 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.

DESMI Pumping Technology A/S 11
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
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.
FAULT
CAUSE
REMEDY
The pump does not
prime
1. The pump is not filled
with liquid
2. Leaking non-return
valve in pump
3. Wrong direction of
rotation
4. Air is drawn in because
of too little liquid or
leaking suction line
5. Liquid lock in outlet
line
6. Temperature of liquid
too high
7. Air cannot escape on
pressure side
Fill pump casing with liquid
Remove foreign body in
valve/Remove any coating
on mating faces
Change direction of rotation
Lower suction pipe/ Tighten
suction line
Change the pressure line so
that the air can pass out
freely
Replace liquid in pump
casing/Wrong dimen-
sioning/Contact DESMI
Ventilate the system
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 5
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 12
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
11. INSPECTION AND MAINTENANCE
Inspect the shaft seal for leaks at regular intervals (leak through the hole in the lower part of the shaft
seal cover).
Activate the relief valve at regular intervals in order to check the function. If the valve is choked,
replace or clean it, if possible.
- 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.
11.1 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 drain plug (75) in the inlet cover of the pump.
11.2 BEARINGS
The pump is equipped with ball bearings with a nominal life of 25,000 working hours when direct
coupled to electric motor, whereas the nominal life with overhanging V-belt drive is about 10,000
working hours. The bearings are lubricated for life and require no attention but are to be replaced
in case of noise or bearing wear.
12. REPAIRS
12.1 ORDERING SPARE PARTS
When ordering spare parts please always state pump type and pump No. (appears on the name
plate of the pump). See also spare parts drawing with item Nos.
13. OPERATING DATA
The following working pressures are allowed
PUMP
S70-50-175N/A-D11
S80-70-175N/A-D11
S100-80-175N/A-D11
Pressure [mWC]
70
70
70
(10.2 mWC = 1 bar)
The powers stated in the table below are the highest possible absorbed by the pump, whereas the
min./max. values for flow and pressure indicate DESMI's recommended operating range for the
pump with the biggest impeller.
Pump
Max. power
[kW]
1450/1750/-
2950/3500
RPM
Min. flow
[m3/h]
1450/1750/-
2950/3500
RPM
Max. flow
[m3/h]
1450/1750/-
2950/3500
RPM
Min. pressure
[mWC]
1450/1750/-
2950/3500
RPM
Max.
pressure
[mWC]
1450/1750/-
2950/3500
RPM
S70-50-175N/A-
D11
1,8/2,2/7,0/11
,0
8,0/10,0/17,5/
20
20/24/45/53
5,6/8,4/19,0/2
7
9,2/13,5/38/5
3
S80-70-175N/A-
D11
2,1/2,8/9,3/14
,5
16,0/17,5/30/
35
39/48/80/95
4,6/6,0/16,5/2
3
8,7/12,5/36/5
0
S100-80-175N/A
-D11
2,6/3,8/13,5
/22
30/35/60
/70
70/85/150/17
0
4,6/6,2/15
/24
8,3/12,2/34
/48

DESMI Pumping Technology A/S 13
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
14. EC DECLARATION OF CONFORMITY
DESMI PUMPING TECHNOLOGY A/S, hereby declare that our pumps of the type Modular S-N super bilge
pump 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)
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 14
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
15. 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.

DESMI Pumping Technology A/S 15
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
16.ASSEMBLY DRAWING
17.SPARE PARTS LIST
1 Pump casing
16 Sunk key
31 Star wheel
2 Pipe plug
17 Shaft
32 Sunk key
4 Sealing ring
18 Bearing housing
33 Priming plate
5 Impeller
19 Allen screw
34 O-ring
6 Nut
20 Shaft seal cover
35 Allen screw
7 Spring collar
21 Gasket
36 Tightening pin
8 Washer
22 Allen screw
37 Pipe plug
9 Sunk key
23 Suction piece
40 O-ring
10 Mech. shaft seal
24 Allen screw
41 Gasket
11 Water deflector
25 Non-return flap
42 Gasket
12 Ring lock
26 Contact ring
43 Pointed screw
13 Ball bearing
27 Gasket
44 Allen screw
14 Support disc
28 Gasket
45 U-pipe
15 Ball bearing
29 O-ring
75 Drain plug
76 Relief valve

DESMI Pumping Technology A/S 16
Tagholm 1
9400 Nørresundby - Denmark
Tel.: [phone]
Fax [phone]
E-mail: [e-mail] www.desmi.com
18.DIMENSIONAL SKETCH
Type
A
B
C
H
F
G
d
h
b
J
K
L
M
N
S70-50-175N/A-
D11
125
380
50
270
160
180
24j6
27
8
15
145
175
10
55
S80-70-175N/A-
D11
150
,5
388
50
295
180
200
24j6
27
8
15
190
220
13
69
S100-80-175N/A-
D11
175
412
50
344
200
240
24j6
27
8
15
220
270
18
69
Type
O
P
D1
k1
Dn1
l1
D2
k2
Dn2
l2
S70-50-175N/A-
D11
190
250
185
145
70
4x18
165
125
50
4x18
S80-70-175N/A-
D11
200
273
200
160
80
8x18
185
145
70
4x18
S100-80-175N/A-
D11
230
320
228
180
100
8x18
220
160
80
8x18