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

Страница: 20 / 56

TM031629
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.
TM031498
Permanent horizontal dry installation, installation
type H
The pump is bolted to the inlet and outlet pipes by
flange connections.
Proceed as follows:
1. Mark and drill mounting holes in the concrete
foundation.
2. Fit the base plate or base stand on the concrete
with anchor bolts. Check the pull-out strengths
required for bolts at the end of this section.
3. Check that the base plate or base stand is
horizontal or vertical.
4. Fasten the pump to the base plate or base stand.
To facilitate service on the pump, fit isolating
valves on either side of the pump.
5. Fit the inlet and outlet pipes and isolating valves, if
used, and ensure that the pump is not stressed by
the pipes.
6. Adjust the length of the power cables by coiling
them up on a relief fitting to ensure that the cables
are not damaged during operation. Make sure to
have enough cable length to be able to make
service on the pump. Fasten the relief fitting to a
suitable hook. Make sure that the cables are not
sharply bent or pinched.
7. Connect the power- and control cables according
to the wiring diagrams.
In horizontal installations, use a reduc-
er between the inlet pipe and the
pump. The reducer must be eccentric
and has to be installed the way its
straight edge is pointing upwards.
Therefore the accumulation of air in the
inlet pipe and the risk of operation dis-
turbance are eliminated.
Make sure that the pipes are installed
without the use of undue force. Do not
allow loads from the weight of the
pipes to be carried by the pump. Use
loose flanges to ease the installation
and to avoid pipe tension at flanges
and bolts.
Do not use elastic elements or bellows
in the pipes. Never use these elements
to align the pipes.
The inlet and outlet pipes are bolted to the pump
by flange connections.
20
English (GB)