Desmi MODULAR H Series Troubleshooting guide

OPERATION AND MAINTENANCE INSTRUCTIONS
DESMI centrifugal pump
MODULAR H Monobloc
DESMI PUMPING TECHNOLOGY A/S
Tagholm l, DK-9400 Nørresundby Tel. [phone] Fax [phone]
Manual:
T1351
Language:
English
Revision:
H (11/19)
Special pump No. .................................................

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

______________________________________________________________________________
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 H Monobloc pump
series. The pumps are available in sizes ranging from 40 to 80 mm on the pressure flange. The
suction flange is bigger than the pressure flange. DESMI H is a single-stage centrifugal pump with
stainless steel shaft, mechanical shaft seal, and closed impeller. The pump is suitable for the
pumping of clean and polluted liquids with temperatures between 0 and 80°C. With special shaft
seal and ball bearing up to 120°C. Max. number of revolutions: 3600 RPM.
The pump has horizontal inlet on the centre line and vertical outlet at the top. 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 the pumping of water in connection with 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.
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 nameplate. See below.
2.1 EXPLANATION OF THE TYPE NUMBER
All the H-pumps are provided with a nameplate. The type number indicated on the nameplate is
built up as follows:
H-XX-YYY-MR
XX.YYY: Pump size
M: The material combination of the pump.
R: The assembly combination of the pump.
M may be the following:
A: Standard. Casing: GG20. Impeller:AlBz.
C: All cast iron.
D: Casing: RG5, Impeller: AlBz.
E: Casing and shaft seal cover: NiAlBz and bronze alloy. Impeller and sealing rings: NiAlBz.

______________________________________________________________________________
DESMI Pumping Technology A/S 4
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
The pumps can be delivered in other material combinations, which are agreed with the supplier.
R may be the following:
02: Monobloc, flange-mounted with electric motor.
07: On a base plate 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.
The pump is particularly suitable for the pumping of water in connection with the cooling of diesel
engines and cooling units, as bilge pump, ballast pump, fire pump, for irrigation, fish farms, water
works, water lowering, etc.
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 levels indicated are for pumps with MEZ-motors.
The capacity of the pump appears from the nameplate 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:

______________________________________________________________________________
DESMI Pumping Technology A/S 5
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
Pump
Ø Pressure branch
Fv N
Fh N
∑F N
∑Mt Nm
H-40-160
40
1350
1000
1700
220
H-50-160
50
1350
1000
1700
220
H-50-200
50
1350
1000
1700
200
H-65-160
65
1450
1050
1800
270
H-65-200
65
1450
1050
1800
270
H-80-200
80
1800
1250
2200
470
In connection with the permissible loads on the flanges the following is to be observed:
v
F
zin
F
zout
F
3
2
h
F
Fyout Fxout Fyin Fxin  2222
t
M
Mzout Myout Mxout Mzin Myin Mxin  222222
2
22






















t
M
calcM
F
calcF
where indices "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 bemounted andfastened on a solid base plate with a flatand horizontal surface
to avoid distortion.
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 to touch the pump surface, and, consequently, he must take the
necessary safety measures.
3.2 WIRING Wiring to be carried out by authorized skilled workmen according to the rules and
regulations in force.

______________________________________________________________________________
DESMI Pumping Technology A/S 6
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
4. TRANSPORT/STORAGE
The weights of the pumps (without motor) are stated in the following table, and the pumps are to
be lifted as shown below.
Pump
Weight kg
H-40-160
30.0
H-50-160
32.0
H-65-160
39.0
H-50-200
40.0
H-65-200
46.0
H-80-200
66.5
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.
5. DISMANTLING
5.1 ACCESS TO IMPELLER
Remove guards (28). Remove Allen screws (22), which hold the shaft seal cover and the
monobloc bracket to the pump casing. The pump casing can now be pulled away allowing
inspection of the impeller.
5.2 DISMANTLING SHAFT SEAL
Pull the shaft seal cover free of the monobloc bracket, by which the coupling is pulled off themotor
shaft. Remove nut (6). Pull off the impeller and remove sunk key (9). Remove Allen screws (16),
which hold the bearing cover to the shaft seal cover, pull shaft seal cover and bearing cover apart,
by which shaft seal and water deflector are pulled off the shaft.

______________________________________________________________________________
DESMI Pumping Technology A/S 7
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
5.3 DISMANTLING SEAT
Press out the seat from behind the shaft seal cover.
5.4 DISMANTLING BEARING
Before dismantling bearing remove ring lock (12). Then pull the shaft/coupling out of the bearing
cover and press the bearing out of the bearing cover.
5.5 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.
- Bearing : Replace in case of wear and noise.
5.6 DISMANTLING COUPLING
It is not necessary to remove the coupling during normal maintenance. Otherwise dismantle the
coupling by removing the pointed screw and pulling off the coupling. If the coupling is dismantled
on the assembled pump, take care that pulling too hard in the coupling does not damage the
bearing. If the coupling is removed after dismantling the pump, fix the shaft at the thread on the
opposite shaft end while the coupling is pulled off.
6. ASSEMBLING
6.1 FITTING SEALING RING IN PUMP CASING
When fitted, the sealing ring is to bear against the shoulder of the pump casing.
6.2 FITTING BEARING
Place the support disc (14) in the bearing cover and press the bearing into place in the bearing
cover. Lead the shaft through the bearing cover, support disc and bearing, and press the bearing
into place up against the support disc. Fit ring lock (12).
6.3 FITTING WATER DEFLECTOR
Tighten the bearing cover to 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 without scratching the lapped surface. Dip the outer rubber ring of the seat into
olive oil (or another neutral oil). 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

______________________________________________________________________________
DESMI Pumping Technology A/S 8
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
of the slide ring rubber bellows with olive oil and push it over the shaft. The use of a 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 oil 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.
6.5 FITTING IMPELLER
Fit the sunk key 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 and a nut.
6.6 FITTING BEARING COVER AND SHAFT SEAL COVER
Place the gasket between pump casing and shaft seal cover on the shaft seal cover where it can
be held with a little grease. Fit and fasten bearing cover and shaft seal cover. Check that the drain
passage for the shaft seal faces downwards.
6.7 SHAFT
When the pump has been assembled, check that the shaft rotates freely.
6.8 FITTING COUPLING
Fit sunk key (76). If the coupling is fitted on the assembled pump, take care that you do not
damage the bearing by pressing the coupling too hard. The coupling might be heated to facilitate
the fitting. If the coupling is fitted before assembling the pump, the shaft is supported at the
opposite shaft end while the coupling is pressed into place. When the coupling bears against the
shoulder of the pump shaft, fit the pointed screw.
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.
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.

______________________________________________________________________________
DESMI Pumping Technology A/S 9
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
9. START-UP
A centrifugal pump will not function until it has been filled with liquid between 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.
9.1 STARTING
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.
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 quantityof 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 faultfinding 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 10
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
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 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
11. 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 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 pipe plug (75) at the bottom of the pump.
11.2 BEARING
The pump is equipped with a ball bearing with a nominal life of 25,000 working hours. The bearing
is lubricated for life and requires no attention but is to be replaced in case of noise or bearing
wear.

______________________________________________________________________________
DESMI Pumping Technology A/S 11
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
12. REPAIRS
12.1 ORDERING SPARE PARTS
When ordering spare parts please always state pump type and serial No. (appears from the
nameplate of the pump). See also spare parts drawing with item Nos.
13. OPERATING DATA
The following max. working pressures are allowed:
PUMP
H-40-160
H-50-160
H-65-160
H-50-200
H-65-200
H-80-200
PRESSURE
mWC
65
65
65
95
95
95
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. 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.
Impeller diameter Ø
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
H-40-160 Ø175
0.8/1.3/5.7/9.4
8.0/11.0/18.0/22
26/30/50/68
4.0/7.0/20/28
9.0/13.0/37/53
H-40-160 Ø165
0.6/1.1/4.8/8
7.0/8.0/15.0/19
25/30/45/57
3.5/5.5/17.0/23
8.4/12.0/34/47
H-40-160 Ø155
0.5/0.9/4.0/6.5
6.0/7.0/12.5/15
23/28/43/55
3.0/4.7/13.0/18
7.3/10.7/30/42
H-50-160 Ø175
1.0/1.7/8.0/13.0
18.0/20/35/36
41/49/83/98
6.0/9.0/24/98
9.2/13.6/38/54
H-50-160 Ø165
0.9/1.5/6.8/11.2
15.0/18.0/27/32
38/47/79/95
5.5/8.2/22/95
8.4/12.4/35/49
H-50-160 Ø155
0.7/1.3/5.8/9.5
14.0/17.0/26/31
37/45/75/88
4.9/7.2/20/90
7.7/11.1/32/44
H-65-160 Ø175
1.8/3.0/13.2/22
36/44/73/80
78/93/157/184
5.2/7.6/21/30
8.6/12.5/35/50
H-65-160 Ø165
1.5/2.5/11.0/18.0
32/40/60/70
75/85/151/170
3.0/6.0/16.0/25
7.2/11.0/32/44
H-65-160 Ø155
1.3/2.1/8.8/15.0
25/32/50/60
70/78/141/165
1.5/4.5/9.0/15.0
6.2/9.2/27/38
H-50-200 Ø220
2.5/4.2/18.5/31
23/25/40/47
53/62/95/114
9.5/15.0/46/63
15.2/22/63/88
H-50-200 Ø205
2.1/3.5/15.5/26
20/22/35/40
50/58/90/108
9.0/13.5/42/57
14.0/20/57/80
H-50-200 Ø190
1.8/3.0/13.2/22
17.0/18.0/30/33
47/55/85/103
7.8/12.0/37/51
12.6/18/51/72
H-65-200 Ø220
3.3/5.8/27/44
37/45/76/86
90/105/182/200
9.0/14.0/37/57
15.0/22/61/86
H-65-200 Ø205
2.7/4.7/22/36
32/38/63/72
85/95/170/186
8.0/12.5/32/49
13.2/19.0/53/75
H-65-200 Ø190
2.2/3.7/17.5/29
23/27/46/52
77/90/157/172
7.0/10.5/28/42
11.6/16.8/47/66
H-80-200 Ø220
4.8/8.2/38/63
56/72/112/115
140/168/270/330
8.2/12.0/33/41
14.7/21/61/85
H-80-200 Ø205
3.9/6.7/31/51
50/60/95/105
130/156/260/300
7.1/10.4/27/38
12.7/18.5/53/73
H-80-200 Ø190
3.1/5.3/24/40
40/43/88/95
120/145/245/280
6.2/9.0/23/31
11.2/16.2/46/64

______________________________________________________________________________
DESMI Pumping Technology A/S 12
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
14. EU DECLARATION OF CONFORMITY
DESMI PUMPING TECHNOLOGY A/S, hereby declare that our pumps of the type Modular H
Monobloc 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 theabove
requirements.
Nørresundby, March 05 2019
Henrik Mørkholt Sørensen
Managing Director
DESMI Pumping Technology A/S
Tagholm 1
9400 Nørresundby

______________________________________________________________________________
DESMI Pumping Technology A/S 13
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 14
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 15 Bearing cover 75 INSEX-screw
2 Pipe plug 16 Allen screw 76 Sunk key
3 Pipe plug 17 Shaft 80 Sealing washer
4 Sealing ring 18 Shaft seal cover 81 Sealing washer
5 Impeller 19 Coupling 82 Sealing washer
6 Nut 20 Motor bracket
7 Spring collar 21 Gasket
8 Washer 22 Allen screw
9 Sunk key 27 Pipe plug
10 Mech. shaft seal 28 Guard
11 Water deflector 70 Set screw
12 Ring lock 71 Allen screw
13 Ball bearing 72 Intermediate flange
14 Support disc 73 Pointed screw

______________________________________________________________________________
DESMI Pumping Technology A/S 15
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [e-mail] www.desmi.com
18. DIMENSIONAL SKETCH
Type
m2
m1
n2
n1
b
D
S
h1
h2
l1
H-40-160
70
100
190
240
50
12
14
132
160
4x18
H-50-160
70
100
212
265
50
12
14
160
180
4x18
H-50-200
70
100
212
265
50
12
14
160
200
4x18
H-65-160
95
125
212
280
65
12
14
160
200
8x18
H-65-200
95
125
250
320
65
12
14
180
225
8x18
H-80-200
95
125
280
345
65
14
14
180
250
8x18
Type
l2
g
A
f
Dn1
K1
D2
Dn2
K2
Q
R
D1
H-40-160
4x18
125
80
284
65
145
150
40
110
1/4"RG
3/8"BSP
185
H-50-160
4x18
145
100
284
65
145
165
50
125
1/4'RG
3/8"BSP
185
H-50-200
4x18
160
100
288
65
145
165
50
125
3/8"RG
3/8"BSP
185
H-65-160
4x18
171
100
298
80
160
185
65
145
3/8"RG
3/8"BSP
200
H-65-200
4x18
185
100
288
80
160
185
65
145
3/8"RG
3/8"BSP
200
H-80-200
8x18
192
125
351
100
180
200
80
160
3/8"RG
3/8"BSP
220