DAYLIFF D3SP Kurulum ve Kullanım Kılavuzu - Sayfa 5

Su Pompası DAYLIFF D3SP için çevrimiçi göz atın veya pdf Kurulum ve Kullanım Kılavuzu indirin. DAYLIFF D3SP 16 sayfaları. Submersible borehole pumps

For single phase pumps 3-core cable is suitable. For three phase pumps 3-core

can be used with steel pipes installation using the drop pipe for earthing. 4-core

must be used for plastic pipe installations.

It is important that the correct cable size is selected which is related to motor size

and total length. Voltage drop should not exceed 5% from the supply point. The

pump supplier should be consulted for the correct cable size.

The drop cable must be attached to the pump tail cable using a certified cable

joint. Leakage at this joint will cause motor failure.

Care must be taken when fitting the motor tail cable to the motor. The connection

between the tail cable and the motor should be lubricated with a non-conducting

petroleum jelly and a secure fit made with the securing screws fully tightened.

i) Riser Pipe

Suitable selection and installation of the riser pipe is essential to avoid the risk of pipe

fracture and pump dislodging. This will then require expensive pump removal or

possibly borehole loss. The following should be noted:-

Either MS galvanised steel pipe in 6m or 3m sections or DAYLIFF PVC borehole

piping in 3m section should be used for all installations below 50m. For shallow

well installations up to 50m single length Polypipe can be used.

For MS steel pipe ensure that all threads are properly cut and that the connecting

sockets are fully threaded. For deep boreholes (deeper than 100m) high tensile

'Crane' type sockets are recommended. Steel pipes are recommended for all 6''

pump installations.

For reasons of reduced friction, ease of installation and economy 'DAYLIFF' PVC

borehole pipe are recommended for all 3"and 4'' pump installations up to 200m

depth. Standard PVC piping must never be used.

A robust sealed wellhead plate should

be fitted on the borehole top to prevent

borehole contamination, a DAYLIFF

w e l l h e a d a s s e m b l y b e i n g

recommended. The assembly includes

a delivery outlet with isolating valve and

test tee as well as drop cable entry and

optional provision for low-level

electrode cables and an airline to

measure borehole water depth.

Regulator Valve

Sleeve for

airline

Fig. 2 Wellhead layout

Test Tee

Junction Box

Cover Plate

Drop Pipe