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English (GB)

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5.1 Cover

5.1.1 PUST04 - PUST10

Unless another solution is selected, 

400 to 1000 mm pits are 

supplied with a PE-HD cover locked with a special M10 bolt. 

Fig. 7

Cover

Fig. 8

Locked cover

5.1.2 PUST17

Covers for 

1700 mm pits come with various lock systems.

5.2 Vent pipe

We recommend to provide the pit with a vent pipe.

Fig. 9

Pit with vent pipe

5.3 Cables

The cables to the level switches and the pump can be led into the 
pit in different ways. Often the cables are led into the pit through a 
cable entry in the side of the pit. If the pit is equipped with a vent 
pipe, the pipe can be used as cable entry.

6. Technical data

6.1 Weight

6.1.1 PUST04 - PUST10

PUST.10.25.D.A.SS.DPSE is the heaviest standard pit, weighing 
312 kg.

6.1.2 PUST17

PUST.17.60.D.A.SS.SW.PE.100 is the heaviest standard pit, 
weighing approximately 1000 kg.

7. Sizing

The pit volume depends on the wastewater flow rate and the 
pump performance.

If the liquid in the pit is static during long periods, sediments may 
build up in the pit. The pump should therefore be started at least 
twice per 24 hours.

8. Transportation

When handling and transporting the pit at low temperatures, take 
into consideration that the pit impact resistance is reduced.

Precautions in order to avoid damage to the pit during handling/
transport:

Do not tip the pit from the lorry.

Use straps of textile or similar materials when lifting the pit on 
or from a lorry or moving it.

Do not drag the pit over the ground.

Always use a suitable means of transport.

Point loads must not occur.

The pit must not be exposed to sharp edges.

Fix the pit securely during transport.

Fig. 10 Lifting the pit (PUST04 - PUST10)

T

M

02

 94

99

 08

0

5

TM

02 94

98 080

5

Warning

The pit must be locked to prevent unwanted 
access.

TM

02

 94

96

 27

04

TM0

2

 934

2

4

0

4

Содержание PUST04

Страница 1: ...t be led into the pit See also the installation and operating instructions of the pump 3 1 4 Density Maximum 1 1 tons m3 1 Symbols used in this document 6 2 General description 6 3 Applications 6 3 1...

Страница 2: ...inless steel AISI 304 Prepared for pump type KP Unilift KP Unilift CC AP35 Unilift AP12 40 Unilift AP35 AP50 Unilift AP12 50 Unilift AP50 APB Unilift AP35B Unilift AP50B DPEF DP 0 6 1 5 kW EF DPSE DP...

Страница 3: ...B 8 TM02 9364 2404 TM02 9363 2404 Fig 3 Pit with free standing pump Fig 4 Pit with pump on auto coupling TM02 9366 2404 TM02 9365 2404 Fig 5 Pit with pump on wall mounted auto coupling Fig 6 Pit with...

Страница 4: ...viest standard pit weighing approximately 1000 kg 7 Sizing The pit volume depends on the wastewater flow rate and the pump performance If the liquid in the pit is static during long periods sediments...

Страница 5: ...The backfill must meet the same requirements as those for the bedding layer The backfilling must be carried out so that the pit is not damaged or deformed The backfill must be compacted in layers of m...

Страница 6: ...cutting edge of the hole saw by at least 23 mm The position of the hole is not an issue See fig 17 Fig 17 Drillilng from the inside Caution If the hole for the pit is drilled pay special attention to...

Страница 7: ...he start level switch should be installed in such a way that the pump is started at the required level however the pump must always be started before the liquid level reaches the lower edge of the bot...

Страница 8: ...lse generators for the pressure switches of the controller and function by means of pneumatic pressure changes The pressure changes when the liquid level in a pickup changes The air bells are connecte...

Страница 9: ...oduct or parts of it must be disposed of in an environmentally sound way 1 Use the public or private waste collection service 2 If this is not possible contact the nearest Grundfos company or service...

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