6 Transportation, storage
5.6 Pressure measurement
Notice
o
A function test of the overflow valve at least every 5 years is essential for the safe operation
Ä
o
Scope and if necessary shorter test intervals must be specified by the operator-owner in accord-
ance with the requirements and national provisions (for example Austrian Ordinance of Safety and
Health (BetrSichV)).
o
The first function test must take place directly after the commissioning.
o
After longer downtimes (> 4 weeks) the function of the overflow valve must be tested again.
5.6 Pressure measurement
A pressure gauge
8
is located in the centre of the station in order to monitor the supply pressure. The
pressure gauge is always connected to the pressure side of the station and is thus independent of the
position of the reversing valve
6
. In order to monitor the pressure on the suction sides of the two
pumps, two further pressure gauges
3
and
5
are mounted. These pressure gauges show only the re-
spective pressure at one of the two strainers and can be used to monitor the degree of soiling of the
strainers. The pressure gauge in the blocked line shows only the inner pressure of the blocked strainer.
The shut-off valves at the pressure gauges may only be opened to read the pressure values,
5.7 Strainer
1
2
1
Strainer cover
2
Strainer insert
The pump station is equipped with two strainers as standard. These strainers serve to separate soiling
that is normally not contained in the pumped liquid. Due to their small size the strainers cannot separ-
ate larger amounts of soiling occurring regularly, nor abrasive fine particles. In the case of such operat-
ing conditions the pump station has to be protected additionally by a correspondingly dimensioned op-
erating filter. Very fine abrasive particles can, however, not be held back by the operating filter and
cause increased wear to the pumps.
Alternatively the strainers can be replaced during commissioning by fine-meshed commissioning strain-
ers
Ä
Commissioning, Page 20. The commissioning strainer is available from the manufacturer. A fur-
ther possibility is the use of an external commissioning filter.
The strainer inserts are made of metal and can be cleaned and reused
Recommended mesh width of strainer and filter
Ä
6 Transportation, storage
6.1 Dangers during transportation
The following safety instructions must be observed
o
Have all work only carried out by authorized qualified personnel.
o
A crane operator and transport personnel are required for transportation (2 persons).
o
Use intact and correctly dimensioned hoisting equipment.
o
Ensure that the means of transport is in a flawless state.
o
Ensure that the centre of gravity of the load is taken into consideration.
o
Do not stand under raised loads.
o
Cordon off the danger zone and ensure that unauthorized persons cannot enter the danger zone.
12
OID 06en-GB Edition 2019-11
Operating instructions
