Free-Standing Submerged Installation - Grundfos DPK.10.50.075 Installation And Operating Instructions Manual

The guide rails must not have any axial
Note
play as this will cause noise during
pump operation.
6. Clean out debris from the tank before lowering
the pump into the tank.
7. Fit the guide claw to the discharge port of the
pump. Then slide the guide claw down the guide
rails and lower the pump into the tank by means
of a chain fastened to the lifting bracket.
When the pump reaches the auto-coupling base
unit, the pump will automatically connect tightly.
8. Hang up the end of the chain on a suitable hook
at the top of the tank and in such a way that the
chain cannot come into contact with the pump
housing.
9. 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 tank.
Make sure that the cable is not sharply bent or
pinched.
10. Connect the motor cable

10.3 Free-standing submerged installation

Pumps for free-standing submerged installation can
stand freely on the bottom of the tank or the like.
The pump must be installed on a ring stand.
See fig. 5.
Fig. 5 Free-standing pump on ring stand
8
Fit a flexible union or coupling to the discharge port
in order to facilitate service on the pump and easy
separation of pump and discharge line.
If a hose is used, make sure that the hose does not
buckle and that the inside diameter of the hose
matches that of the pump discharge port.
If a rigid pipe is used, fit the union or coupling, non-
return valve and isolating valve in the order
mentioned when viewed from the pump.
If the pump is installed in muddy conditions or on
uneven ground, we recommend that you support the
pump on bricks or a similar support.
Installation procedure:
1. Fit a 90 ° elbow to the pump discharge port and
connect the discharge pipe/hose.
2. Lower the pump into the liquid by means of a
chain secured to the lifting bracket of the pump.
We recommend that you place the pump on a
plane, solid foundation. Make sure that the pump
stands securely.
3. Hang up the end of the chain on a suitable hook
at the top of the tank and in such a way that the
chain cannot come into contact with the pump
housing.
4. 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. Make sure that the
cable is not sharply bent or pinched.
5. Connect the motor cable.