Speck pumpen SUPI, Translation Of Original Operation Manual

Page: 60 / 84

Installation
18 EN 09|2017
5.2 Pipes
5.2.1 Pipe sizing
 All pumps have a (inner thread) threaded connector.

We recommend using pipes made from plastic.
5.2.2 Laying pipes
 Keep the pressure line as straight as possible.

Avoid sudden changes to the cross-section and direction.
 An appropriately dimensioned and rust-free rope can be
attached to the pump in order to of lower it.
Horizontal installation:
The pump and pressure lines should be laid so that no force is
transferred from the pipes to the pump. (tension, weight,
vibration, …).
5.2.3 Setting the preload pressure in the diaphragm container
The diaphragm pressure vessel built into the unit is preloaded
with nitrogen. After six months of operation, the pre-compaction
must be tested and replenished if necessary. Preload pressure =
10 % under the pump’s starting pressure. Instead of nitrogen,
pressurised air can also be used if need be. However under no
circumstances may oxygen be used. The diaphragm pressure
vessel must always be tested in a pressure less and drained
state.