Desmi B114N Troubleshooting guide

_______________________________________________________________________________
___
DESMI Pumping Technology A/S
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
OPERATION AND MAINTENANCE INSTRUCTIONS
DESMI priming pump B114N
DESMI Pumping Technology A/S
Tagholm 1 –DK-9400 Nørresundby –Denmark
Tel.:
[phone]
Fax:
[phone]
E-mail:
[email protected]
Internet:
www.desmi.com
Manual:
T1488
Language:
English
Revision:
C (11/2015)
Special pump no. .................

_______________________________________________________________________________
___
DESMI Pumping Technology A/S
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
Table of Contents:
1. PRODUCT DESCRIPTION............................................................................................................ 3
1.1 DELIVERY........................................................................................................................................ 3
2. TECHNICAL DATA ..................................................................................................................... 3
2.1 EXPLANATION OF THE NAME PLATE .............................................................................................. 3
2.2 TECHNICAL DESCRIPTION .............................................................................................................. 3
3. INSTALLATION.......................................................................................................................... 4
3.1 WIRING .......................................................................................................................................... 4
4. TRANSPORT/STORAGE ............................................................................................................. 4
5. DISMANTLING.......................................................................................................................... 4
5.1 ACCESS TO IMPELLER ..................................................................................................................... 4
5.2 SHAFT SEAL .................................................................................................................................... 4
5.3 INSPECTION ................................................................................................................................... 5
6. ASSEMBLING............................................................................................................................ 5
6.1 FITTING SHAFT AND SHAFT SEAL ................................................................................................... 5
6.2 FITTING IMPELLER.......................................................................................................................... 5
6.3 SHAFT............................................................................................................................................. 5
7. FROST PROTECTION.................................................................................................................. 5
8. DISMANTLING.......................................................................................................................... 6
9. START-UP................................................................................................................................. 6
9.1 STARTING....................................................................................................................................... 6
10. INSPECTION AND MAINTENANCE............................................................................................ 7
11. REPAIRS ................................................................................................................................. 7
11.1 ORDERING SPARE PARTS ............................................................................................................. 7
12. OPERATING DATA................................................................................................................... 7
13. EU DECLARATION OF CONFORMITY ........................................................................................ 8
14. ASSEMBLY DRAWING B114N .................................................................................................. 9
14.1 SPARE PARTS LIST B114N ............................................................................................................. 9
15. DIMENSIONAL SKETCH ......................................................................................................... 10

______________________________________________________________________________
DESMI Pumping Technology A/S 3
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
1. PRODUCT DESCRIPTION
These maintenance and operation instructions apply to the DESMI priming pumps B114N.
The pumps have 1/2" connections on suction and pressure side. B114N is a vacuum pump of
the water ring type, with mechanical shaft seal, bronze shaft, impeller and pump casing.
For special applications the pump can be delivered in other material combinations –e.g. with
stainless steel shaft and ductile cast iron impeller and pump casing.
Max. temperature for standard design is 80°C.
The pumped liquid serves as lubricant for the pumps and therefore, they do not have to be
lubricated further.
Max. pump speed is 3600 RPM. The pump is driven by an electric motor, which may be a
standard AC motor, or a DC motor.
1.1 DELIVERY
-Check on receipt that the delivery 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 EXPLANATION OF THE NAME PLATE
The pumps are equipped with a name plate indicating pump type, production week, production
year, item list number if the pump has been sold alone, or an order number, if the pump has
been sold when built together with another machine.
Before putting a pump into operation, the suitability of the material combination of the pump
must always be taken into consideration. In case of doubt, contact the supplier.
If the pumps are intended 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). This noise level applies to pumps with electric motors.
The permissible loads on the flanges on suction and pressure side are stated in the table
below:
Pump
Fv(N)
Fh (N)

F(N)

Mt (Nm)
B114N
500
400
640
80
Fv : The max. permissible sum of the vertical forces on the two connections.

______________________________________________________________________________
DESMI Pumping Technology A/S 4
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
Fh : The max. permissible sum of the horizontal forces on the two connections.

F : The vectorial sum of the two forces Fv and Fh.

Mt : The max. permissible sum of torques on the two connections.
In connection with the permissible loads on the connections stated in the above table the
following is to be observed:
2
2
2




















t
M
calcM
F
calcF
where index "calc" is the values calculated by the user.
3. INSTALLATION
The max. permissible loads on the connections stated in paragraph 2.2 must 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 he is to take the necessary
safety measures.
3.1 WIRING
Wiring to be carried out by authorized skilled workmen according to the rules
and regulations in force.
4. TRANSPORT/STORAGE
The weight, including DESMI motor, is indicated in the table below:
Type
Weight in kg
B114N/50 Hz
30
B114N/60 Hz
31
The pump is to be stored in a dry area.
5. DISMANTLING
The numbers in brackets refer to the position numbers on the assembly drawing.
5.1 ACCESS TO IMPELLER
Remove Allen screws (12) and dismantle the end cover (3). Remove the pointed screw (7).
The impeller (1) can now be pulled off and inspected.
5.2 SHAFT SEAL
Remove key (11) from the shaft (4). Remove the copper pipes (16) and (27) connected to the
pump casing. Remove set screws (14) and pull the pump casing free of the shaft (4) and the
electric motor and the shaft seal is pulled off the shaft. Press the seat out from behind the
pump casing.

______________________________________________________________________________
DESMI Pumping Technology A/S 5
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
5.3 INSPECTION
After dismantling as described in 5.1, inspect the impeller, end cover and pump casing.
Replace the parts, if wear or corrosion is established in areas to such an extent that the priming
ability of the pump is considerably deteriorated, or the pump makes more noise than usual.
Check the seat in the shaft seal for flatness and cracks. Check rubber parts for elasticity.
6. ASSEMBLING
6.1 FITTING SHAFT AND SHAFT SEAL
Fit the shaft (4) on the motor shaft. The motor shaft must entirely bottom the hole in the shaft
(4). Fit and tighten the pointed screws (6) (first the middle screw). Check that the wobble of
the shaft, measured as far as possible from the motor, does not exceed 0.07 mm (70 m).
Fit the sealing washer (9) in the pump casing. Fit the pump casing on the motor with screws
and washers (14).
Please note which type of rubber is used in the shaft seal bellows. 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. Before fitting the seat, clean the recess in the cover. Dip the outer
rubber ring of the seat in soapy water or grease it with silicone. Now press the seat into
place with the fingers and check that all parts are correctly imbedded. If it is necessary to
use fitting tools, then protect the sliding surface of the seat to prevent it from being scratched
or cut. Lubricate the inner diameter of the rubber bellows on the slide ring with soapy water
and push it over the shaft.
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 about 15 minutes and until then tightness should not be
expected. After start, check by viewing the leak hole that there are no leaks.
6.2 FITTING IMPELLER
Fit the key (11) in the shaft and lead the impeller over the shaft. Use an air gap gauge to place
the impeller 0.05 mm from the pump casing when tightening the pointed screw (7). Fit the end
cover and O-ring (13) with Allen screws (12). Fit the copper pipes (16) and (27) connected to
the pump casing.
6.3 SHAFT
When the pump has been assembled, check that the shaft rotates freely and without noise.
7. FROST PROTECTION
Pumps which are not in operation during frost periods are to be drained to avoid frost damage.
Alternatively, it is possible to use anti-freeze liquids in normal constructions.

______________________________________________________________________________
DESMI Pumping Technology A/S 6
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
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.
9. START-UP
The pump will not function until the feed water tank 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.
9.1 STARTING
Before starting the pump check that
-the shaft rotates freely without jarring sounds.
-the feed water tank 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. 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 priming 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
5. Suction lift too high
6. No water in the feed water
tank
7. The pump is unable to
discharge air into the
delivery piping.
Change direction of rotation
to the direction of the arrow
Clean or replace
Clean the pump. Check the
copper pipe between feed
water tank and pump, and all
fittings on the pump
Find the leakage, repair the
fault. Note: a pressure-tight
piping system is not
necessarily vacuum-tight.
Check data sheet Q/H or
contact DESMI
Fill the feed water tank
with water
The piping system must be
designed so that air can
easily escape. A vertical pipe
filled with water reduces the
airflow considerably.

______________________________________________________________________________
DESMI Pumping Technology A/S 7
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
FAULT
CAUSE
REMEDY
The priming pump uses
too much power
1. Foreign body in pump
2. Electric motor is running on
2 phases
Dismantle the pump, remove
the cause
Check fuses, cable
connection and cable
10. INSPECTION AND MAINTENANCE
Inspect the shaft seal in B114N for leaks at regular intervals.
-Before any inspection of a pump without guard check that the unit 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. REPAIRS
11.1 ORDERING SPARE PARTS
When ordering spare parts please always state pump type and pump No. (indicated on the
name plate of the pump). See also spare parts drawing with item No´s and part names. See
assembly drawing.
12. OPERATING DATA
The powers indicated in the table below constitute the max. power consumption of the pump.
The following working pressures are allowed:
TYPE
PRESSURE
bar
Power
kW
B114N
2
2,6

______________________________________________________________________________
DESMI Pumping Technology A/S 8
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
13. EU DECLARATION OF CONFORMITY
DESMI Pumping Technology A/S, hereby declare that our pumps of the type B114N 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 + A1
Pumps and pump units for liquids –Common safety
requirements
EN/ISO12162+A1:2009
Liquid pumps –Safety requirements –Procedure for
hydrostatic testing
EN 60204-1:2006
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, November 12, 2015
Claus Dietz Hansen
Technical Director
DESMI A/S
Tagholm 1, 9400 Nørresundby

______________________________________________________________________________
DESMI Pumping Technology A/S 9
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
14. ASSEMBLY DRAWING B114N
14.1 SPARE PARTS LIST B114N
1 Impeller 14 Set screw/washer 27 Copper pipe
2 Pump casing 15 Angle nipple 28 Angle nipple
3 End cover 16 Copper pipe 29 Fitting
4 Shaft 17 Hexagon nipple 30 Magnetic valve *
5 Shaft seal 18 Bushing 31 Pressure switch
*
6 Pointed screw 19 Filter 32 Muff
7 Pointed screw 20 Hexagon nipple 33 Nipple
8 Feed water tank 21 Non-return valve 34 Muff-tee
9 Sealing washer 22 Pipe clamp 35 Motor
10 Pipe plug 23 Muff-tee
11 Key 24 Hexagon nipple
12 Allen screw 25 Red. nozzle
13 O-ring 26 Hexagon nipple
*) OPTION

______________________________________________________________________________
DESMI Pumping Technology A/S 10
Tagholm 1
9400 Nørresundby –Denmark
Tel: [phone] Fax: [phone]
E-mail: [email protected]
www.desmi.com
15. DIMENSIONAL SKETCH