E-Tech VS series 8" submersible pumps - Manual (Page 11)

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When flanged pipes are used, the cable clips must be
positioned before and after each flange.
5 .4 Lowering of the pump
Verify that the well is not clogged along its total length.
Lower the pump into the well, paying attention not to
damage the electric cable.
Note: Do not lower the pump by means of the electric
cable.
5 .5 Installation depth
The dynamic water level must always be above the
suction support of the pump, see paragraph 3.1
Positioning Limits and Fig. 5.
The minimum safety margin shall be 1 meter.
Lt
Lc
Ld
La
Lb
Lt
Lc
Ld
La
Lb
001
14015 09/2008
001
14015 06/2010
Fig. 5
La: Minimum installation depth
(suggested: minimum 1 mt).
Lb: Static water level
Lc: Dynamic water level
Ld: Difference between static and dynamic level
Lt: Installation depth
Block the delivery pipe with proper hangers on the well
head.
Loosen the support rope and fix it to the groundwork.
6 . START-UP
When the pump has been installed and submerged, it can
be started with the gate valve closed to 1/3.
Check the direction of rotation as described in section 4.2
Verification of Rotation Direction.
If there are impurities in the water, the gate valve should
be opened gradually until the water becomes clearer. The
pump should not be stopped until the water is completely
clean again, since otherwise the pump parts and the non-
return valve may be damaged.
If the pump flow rate is higher than that of the well,
the use of a protection device against dry operation is
recommended.
Without any protection against dry operation, the water
level falls under the suction support and the pump sucks
air. In the long term, this causes damages due to poor
cooling and lubrication.
7 . MAINTENANCE AND SERVICE
The pumps are maintenance-free.
All pumps are easy to service.
Use the Service Kits and the special tools for maintenance.
The Service Manual is available upon request.
m
Before performing any operation on the pump
or on the motor, verify that the power supply
is disabled and that it cannot accidentally be
enabled again.
8 . DISPOSAL
This product or parts of it must be disposed using the
local public or private waste collection service.