Grundfos ST-55-520, Инструкция по установке и эксплуатации

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S
C
TM031626
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 screws.
2. Place the auto-coupling base unit on the bottom
of the pit. If the bottom of the pit is uneven, the
auto-coupling base unit must be supported. Use a
plumb line to establish the correct positioning.
Fasten the auto coupling with expansion bolts.
3. Connect the outlet pipe in accordance with the
generally accepted procedures. Avoid 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 longer than 6
m. Place the guide rails on the auto coupling, then
place the guide-rail bracket on the guide rails and
fasten it to the pit wall. Tighten the anchor bolts.
5. Clean out debris from the pit before lowering the
pump into it.
6. Before lowering the pump into the wet pit, check
the cables for cuts or ruptures.
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, the
pump automatically connects.
8. Hang up the end of the chain on a suitable hook
at the top of the pit. Make sure that the chain is
straight but not strained.
9. 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. Fix the
cables at the top of the pit to avoid extra cable
sliding into the pit. Make sure that the cables are
not sharply bent or pinched. Make sure to have
enough cable length to be able to make service
on the pump.
10. Connect the power- and 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
Bolts
Pull-out strength
[kN]
DN 250 4 x M24 30
DN 300 4 x M24 40
DN 500 6 x M30 40
DN 600 6 x M30 40
DN 800 6 x M30 20
The pull-out strengths stated are without
safety factor. The required safety factor
may depend on the materials and the
methods used for anchoring.
Related information
6.2.1 Start and stop levels for auto-coupling
installations
4.3.2 Dry installation
Install pumps in dry installation permanently in a
pump room.
The pump motor is enclosed and watertight and will
not be damaged if the installation site is flooded with
water.
For vertical, dry installations, type D, install
the pump on a permanent concrete foun-
dation.
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English (GB)