Grundfos S Serie Manual Del Usuario página 15

Permanent installation in a pit, installation type S and C
Proceed as follows:
1. Drill mounting holes for the guide-rail bracket on the inside of
the pit and fasten the guide-rail bracket with two anchor bolts.
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 anchor bolts. If the bottom of the pit is uneven,
support the auto-coupling base unit.
3. Connect the outlet pipe in accordance with the generally
accepted procedures and without exposing the pipe to distortion
or tension. Do not allow loads from the weight of the pipes to be
carried by the auto coupling.
4. Fit the guide rails. An intermediate guide-rail bracket is required
if guide rails are more than 20 ft (6 m) long. Place the guide rails
on the auto coupling, then place the guide rail bracket on the
guide rails and fasten the guide rail bracket to the pit wall.
Tighten the anchor bolts.
5. Clean out debris before lowering the pump into the pit.
6. Before lowering the pump into the wet pit, check the cables for
cuts or ruptures which may be caused by rough handling during
transportation or installation.
7. Slide the guide claw of the pump between the guide rails and
lower the pump into the pit by a certified chain secured to the
lifting bracket. When the pump reaches the auto-coupling base
unit, it automatically connects.
8. Hang up the end of the chain on a suitable hook at the top of the
pit. Make sure the chain cannot come into contact with the
pump.
9. Adjust the length of the power cables, but ensure to have
enough cable length to be able to make service on the pump.
Make sure that the cables are not sharply bent or pinched. Fix
the cables at the top of the pit, so that no extra cable slides into
the pit.
10. Connect the power and the control cables.
Avoid pipe tension at flanges and bolts.
The free end of the cables must not be submerged as
water may penetrate into the motor.
Pull-out strengths for anchor bolts
Auto-coupling base
unit
ANSI 10" (DN 250)
S
ANSI 12" (DN 300)
ANSI 20" (DN 500)
ANSI 24" (DN 600)
ANSI 32" (DN 800)
The pull-out strengths stated are without safety factor. The
required safety factor may depend on the materials and
the methods used for anchoring.
C
5.3.2 Dry installation
Install pumps in dry installation permanently in a pump room.
The pump motor is enclosed and watertight and cannot be
damaged if the installation site is flooded with water.
For vertical, dry installations, type D, install the pump on a
permanent concrete foundation.
Permanent, vertical, dry installation, installation type D
The dry-installed pumps are bolted to the inlet and outlet pipes by
flange connections. See dimensions in product-specific drawings.
For horizontal, dry installations, type H, the pump is
mounted on a base plate from the factory.
Pull-out strength
Bolts
[kip (kN)]
4 x 1" (M24) 6.7 (30)
4 x 1" (M24) 9.0 (40)
6 x 1 1/4" (M30) 9.0 (40)
6 x 1 1/4" (M30) 9.0 (40)
6 x 1 1/4" (M30) 4.5 (20)
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