background image

7

5.5 Connecting the piping 

Never use the pump itself as an anchorage point
for the piping.

The pump must not be subjected to any pipeline forces and
moments (for example by torsion, thermal expansion).

Suction lift lines shall be laid with a rising slope towards the
pump and suction head lines with a downward slope towards
the pump. The pipelines shall be anchored in close proximity
to the pump and connected without transmitting any stresses
or strains.

With short pipelines, the nominal diameters should be at least
equal to the nominal diameters of the pump nozzles. For long
pipelines, the most economical nominal diameter has to be
determined from case to case.

Adapters to larger diameters should have a diffuser angle of
approx. 8 in order to avoid any increase in pressure losses.

It is recommended to install check and shut-off elements in
the system, depending on the type of plant and pump.

Thermal expansions of the pipelines must be compensated by
appropriate measures so as not to impose any extra loads on
the pump exceeding the permissible pipeline forces and
moments.

An excessive, impermissible increase in the pipeline
forces may cause leaks on the pump where the medium

handled can escape into the atmosphere.

Danger of life when hot media are handled! 

The flange covers on the pump suction and discharge nozzles
must be removed prior to installation in the piping.

Before commissioning new installations thoroughly clean,
flush and blow through all vessels, pipelines and connec-
tions.Often welding beads, scale and other impurities only
come off after a certain period of operation. Fit a strainer in the
suction line to prevent them from entering the pump. The total
cross-section of the holes in the strainer shall be three times
the cross-section of the pipeline in order to avoid excessive
pressure loss across the strainer due to clogging. Conical
strainers with laid-in wire mesh having a mesh width of 0.5
mm and a wire diameter of 0.25 mm, of corrosion-resistant
material, shall be used.

1  Strainer housing 

2  Fine screen 

3  Perforated plate 

4  Pump suction nozzle 

5  Differential pressure gauge 

Fig. 5.5-1 Conical strainer for the suction line 

5.5.1 Auxiliary connections 

The dimensions and location of the auxiliary connection (drain
line) are indicated on the general arrangement drawing or pip-
ing layout.

5.5.2 Vacuum balance line 

Where liquid has to be pumped out of a vessel under vacuum,
it is advisable to install a vacuum balance line. This line shall
have a nominal diameter of at least 25 mm and must be
arranged to lead into the vessel at a point above the highest
permissible liquid level.

An additional pipeline fitted with a shut-off valve – from the
pump discharge nozzle to the balance line – facilitates venting
of the pump before start-up.

A  Main shut-off valve 

B  Vacuum balance line 

C  Shut-off valve 

E  Vacuum-tight shut-off valve 

R  Swing check valve 

V  Vessel under vacuum 

Z  Intermediate flange 

Fig. 5.5-2 Suction line and vacuum balance line 

5.6 Final check 

Check the integrity and proper functioning of all
connections.

5.7 Connection to power supply 

Connection to the power supply must be effected by a trained 

electrician only.

The applicable DIN VDE regulations 0100 and, for explosion-
proof units, 0165 must be complied with.

Check available mains voltage against the data on the motor
rating plate and select appropriate start-up method.

All connections shall be effected in accordance with the
technical specifications issued by the local energy sup-
ply company.

We strongly recommend to use a motor protection device. DIN
VDE 0170/0171 stipulates that explosion-proof motors, type of
protection IP 54, increased safety Ex EEx, temperature class
T3, must always be connected via a motor protection switch.

121

1:

19/

4

Etabloc

!

Caution

Caution

Содержание Etabloc

Страница 1: ...Operating Instructions Close coupled Pumps Etabloc...

Страница 2: ......

Страница 3: ...tart up shutdown 8 6 1 Commissioning 8 6 1 1 Shaft seal 8 6 1 2 Priming the pump and checks to be carried out 8 6 1 3 Final check 8 6 1 4 Contact guard 8 6 1 5 Start up 8 6 1 6 Shutdown 8 6 2 Operatin...

Страница 4: ...tabloc N 7 5 3 11 Noise characteristics 4 4 6 Non compliance with safety instructions 2 3 4 Operating limits 6 2 9 Ordering spare parts 7 6 1 12 Personnel qualification and training 2 2 4 Place of ins...

Страница 5: ...in a perfectly legi ble condition at all times 2 2 Personnel qualification and training All personnel involved in the operation maintenance inspec tion and installation of the unit must be fully qual...

Страница 6: ...rt foot Fig 3 1 2 Transport of the unit with motor pump foot During transport the shaft 210 of the pump without motor must be locked in place 1 Press cover plates 68 3 slightly together and remove fro...

Страница 7: ...ved and complied with The test certificate supplied must be kept close to the loca tion of operation for easy access e g foreman s office 5 2 Checks to be carried out prior to installation All structu...

Страница 8: ...der to avoid excessive pressure loss across the strainer due to clogging Conical strainers with laid in wire mesh having a mesh width of 0 5 mm and a wire diameter of 0 25 mm of corrosion resistant ma...

Страница 9: ...been properly connected 6 1 1 Shaft seal Shaft seal see sections 7 4 4 and 7 5 2 6 1 2 Priming the pump and checks to be carried out Before start up the pump and the suction line must be vented and pr...

Страница 10: ...t is advisable to close the pump nozzles e g with plastic caps or similar 6 4 Returning to service after storage Before returning the pump to service carry out all checks and maintenance work specifie...

Страница 11: ...and reassembly must always be carried out in accordance with the relevant exploded view 7 4 1 Fundamental instructions and recommendations Repair and maintenance work to the pump must only be car rie...

Страница 12: ...t sequence 7 5 2 Mechanical seal Reassembly is effected in reverse order to dismantling The following rules must be observed when fitting a mechan ical seal Extreme care and cleanliness The protective...

Страница 13: ...umber of pumps including stand by pumps 2 3 4 5 6 and 7 8 and 9 10 and more Part No Description Quantity of spare parts 210 Shaft 1 1 1 1 2 2 2 20 230 Impeller including casing wear ring 502 2 2 1 1 1...

Страница 14: ...shaft sleeve Fit new shaft seal D Vibrations during pump operation Improve suction conditions Increase pressure at the pump suction nozzle D D D Pump is warped Check pipeline connections and secure fi...

Страница 15: ...tor on top please contact KSB Position of condensate holes o open x closed Horizontal installation attachment above Motor has to be turned through 180 Etabloc N up to motor size 180 22 kW For vertical...

Страница 16: ...abyrinth seal 433 Mechanical seal 502 1 2 Casing wear ring Part No Description 523 Shaft sleeve 550 1 1 Disc 802 Motor for close coupling 902 1 2 4 2 Stud 903 1 Screwed plug 920 1 3 Hex nut 920 4 2 He...

Страница 17: ...Shaft sleeve 550 1 1 Disc 802 Motor for close coupling 902 3 42 Stud 903 1 Screwed plug 920 1 4 Hex nut 930 Spring washer 940 Key Auxiliary connections 1M Pressure gauge 6B Casing drain 6D Priming an...

Страница 18: ...163 Discharge cover 210 Shaft 230 Impeller 341 Drive lantern 400 1 Gasket 411 5 Joint ring 433 Mechanical seal Part No Description 801 Flanged motor 902 1 3 4 5 Stud 903 1 2 Screwed plug 920 1 4 5 He...

Страница 19: ......

Страница 20: ...Etabloc Gartone Press Tel 011 440 6126 29 6 2004 Subject to technical modification without prior notice...

Отзывы: