Grundfos DPK Series Installation And Operating Instructions Manual page 5

Proceed as follows:
1. Fit the guide rail bracket on the inside of the pit
and fasten it provisionally with anchor bolts.
2. Place the auto-coupling base unit on the bottom
of the pit.
Use a plumb line to establish the correct
positioning.
3. Fasten with heavy-duty expansion bolts.
Support the auto-coupling base unit so that it is
level when being fastened.
4. Connect the outlet line without exposing it to
distortion or tension.
5. Insert the guide rails in the auto-coupling base
unit and adjust the length of the rails accurately
to the guide rail bracket.
6. Unscrew the provisionally fastened guide rail
bracket and fit it on top of the guide rails. Fasten
the bracket firmly to the pit wall.
The guide rails must not have any axial
play as this will cause noise during pump
operation.
7. Clean out debris from the pit before lowering the
pump into the pit.
8. Fit the guide claw to the outlet port of the pump.
Then slide the guide claw down the guide rails
and lower the pump into the pit 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.
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 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 pit.
Make sure that the cable is not sharply
bent or pinched.
11. Connect the power cable.
3.1.3 Free-standing submerged installation
Pumps for free-standing submerged installation can
stand freely on the bottom of the pit or the like. The
pump must be installed on a ring stand. See fig. 2.
Fig. 2 Free-standing pump on ring stand
Fit a flexible union or coupling to the outlet in order
to facilitate service on the pump and easy separation
of pump and outlet 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 outlet.
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, support the pump on bricks or a
similar 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 by means of a
chain secured to the lifting bracket of the pump.
Place the pump on a plane, solid foundation to
make sure that the pump stands securely.
3. 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.
4. 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.
5. Fasten the relief fitting to a suitable hook.
Make sure that the cable is not sharply
bent or pinched.
6. Connect the motor power cable.
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