Grundfos SE1 50 Notice D'installation Et De Fonctionnement page 15

Proceed as follows:
1. Drill mounting holes for the guide-rail bracket
on the inside of the tank and fasten the guide-
rail bracket provisionally with two screws.
2. Place the auto-coupling base unit on the
bottom of the tank. Use a plumb line to
establish the correct positioning. Fasten the
auto coupling with expansion bolts. If the
bottom of the tank is uneven, the auto-
coupling base unit must be supported so that
it is level when being fastened.
3. Connect the outlet pipe according to the
generally accepted procedures. Avoid
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 tank.
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 tank.
The guide rails must not have any
axial play as this would cause
noise during operation.
6. Clean out debris from the tank before lowering
the pump.
7. Fit the guide shoe to the pump outlet and
grease its gasket before lowering the pump
into the tank.
8. Slide the guide shoe of the pump between the
guide rails and lower the pump into the tank
by a chain secured to the lifting bracket. When
the pump reaches the auto-coupling base
unit and the chain is unstrained, pull it towards
the guide-rail several times to ensure proper
connection.
9. Hang up the end of the chain on a suitable
hook at the top of the tank so that the chain
cannot come into contact with the pump
housing.
10. Adjust the length of the power 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
tank. Make sure that the cables are not
sharply bent or pinched.
11. Connect the power cable.
The free end of the cable must not be
submerged, as water may penetrate
into the motor.
5.1.1.1 Size of anchor bolts in foundation
Auto-coupling
Anchor bolts
base unit
A30/A40
4 × M16
(DN 80/100)
A40
4 × M16
(DN 100)
A60
4 × M16
(DN 150)
A80
4 × M24
(DN 200)
A100
4 × M24
(DN 250)
A120
4 × M24
(DN 300)
The strengths given above do not
include safety factor. The required
safety factor depends on the materials
and method used for anchoring.
5.1.2 Free-standing, submerged installation
Pumps for free-standing, submerged
installation can stand freely on the bottom of the
tank. The pump must be installed on a ring stand.
The ring stand is available as an accessory.
To facilitate service on the pump, fit a flexible
union or coupling to the elbow on the outlet port
for easy separation.
If a hose is used, make sure the hose does not
buckle and the inside diameter of the hose
matches the pump outlet port.
If a rigid pipe is used, fit the parts in the
following order:
1. union or coupling
2. non-return valve
3. isolating valve.
If the pump is installed in muddy conditions or on
uneven ground, place it on a solid support.
Proceed as follows:
1. Fit a 90° elbow to the pump outlet port and
connect the outlet pipe or hose.
2. Lower the pump into the liquid with a chain
secured to the lifting bracket of the pump.
Place the pump on a plain, solid foundation.
Make sure that the pump is hanging from the
chain and not the cable. Make sure that the
pump is standing securely.
3. Hang up the end of the chain on a suitable
hook at the top of the tank so that the chain
cannot come into contact with the pump
housing.
Pull-out
strength for a
single bolt
[kipf (kN)]
0.45 (2.0)
0.56 (2.5)
0.56 (2.5)
0.45 (2.0)
0.56 (2.5)
0.67 (3.0)
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