Grundfos SE1 50 Instrucciones De Instalación Y Funcionamiento página 12

Warning
Do not put your hands or any tool into the pump
suction or discharge port after the pump has been
connected to the power supply, unless the pump has
been switched off by removing the fuses or switching
off the mains switch. It must be ensured that the
power supply cannot be accidentally switched on.
We recommend to always use Grundfos accessories
Caution
to avoid malfunctions due to incorrect installation.
Warning
Only use the lifting bracket for lifting the pump. Do
not use it to hold the pump when in operation.
The SE1, SEV pumps are suitable for different installation types
which are described in sections 7.1,
All pump housings have a cast iron PN 10 discharge flange, size
DN 65, DN 80, DN 100 or DN 150 according to EN 1092-2.
The pumps are designed for continuous operation,
Note
both for submerged and dry installation.
See section 13. Technical data.
Installation types
The SE1, SEV pumps are designed for two installation types:
• Submerged installation
- on auto coupling
- free-standing on ring stand.
• Dry installation
- vertical on base stand
- horizontal with brackets secured to a concrete floor or
foundation.
When mounted on base stand or brackets, the pump must be
installed outside the pit. A suction line must be connected to the
pump.
A dimensional sketch for each individual installation type can be
found at the end of this booklet.
7.1 Submerged installation on auto coupling
Pumps for permanent installation can be installed on a stationary
auto-coupling guide rail system. The auto-coupling system
facilitates maintenance and service as the pump can easily be
lifted out of the pit.
Warning
Before beginning installation procedures, make sure
that the atmosphere in the pit is not potentially
explosive.
Make sure that the pipework is installed without the
use of undue force. No loads from the pipework
Caution
weight must be carried by the pump. We recommend
the use of loose flanges to ease the installation and
to avoid pipe tension at flanges and bolts.
Do not use elastic elements or bellows in the
Caution
pipework; these elements should never be used as a
means to align the pipework.
12
7.2 and 7.3.
Proceed as follows:
1. Drill mounting holes for the guide rail bracket on the inside of
the pit and fasten the guide rail bracket provisionally with two
screws.
2. Place the auto-coupling base unit on the bottom of the pit.
Use a plumb line to establish the correct positioning.
Fasten the auto coupling with expansion bolts. If the bottom of
the pit is uneven, the auto-coupling base unit must be
supported so that it is level when being fastened.
3. Assemble the discharge pipe in accordance with the generally
accepted procedures and without exposing the pipe to
distortion or tension.
4. Place the guide rails on the auto-coupling base unit and adjust
the length of the rails accurately to the guide rail bracket at
the top of the pit.
5. Unscrew the provisionally fastened guide rail bracket. Insert
the upper guide rail bracket into the guide rails. Fasten the
guide rail bracket on the inside of the pit.
The guide rails must not have any axial play as this
Note
would cause noise during pump operation.
6. Clean out debris from the pit before lowering the pump into
the pit.
7. Fit the guide claw to the discharge port of the pump.
8. Slide the guide claw of the pump between the guide rails and
lower the pump into the pit by means of a chain secured to the
lifting bracket of the pump. When the pump reaches the auto-
coupling base unit, the pump will automatically connect tightly.
9. Hang up the end of the chain on a suitable hook at the top of
the pit and in such a way that the chain cannot come into
contact with the pump housing.
10. Adjust the length of the motor cable by coiling it up on a relief
fitting to ensure that the cable is not damaged during
operation. Fasten the relief fitting to a suitable hook at the top
of the pit. Make sure that the cables are not sharply bent or
pinched.
11. Connect the motor cable.
The free end of the cable must not be submerged, as
water may penetrate through the cable into the
Note
motor.
Fig. 3 Submerged pump on auto coupling