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Assembly instructions
4.2.5 Adjusting the volumetric flow
Changing the primary volumetric flow
If a different primary flow needs to be used than the volumetric flow designed, then the nozzle
needs to be ordered and adjusted for this. (K1 = low volumetric flows to K4 = high volumetric
flows). Steps a) to d) in the figure [} 6] show how this is changed.
Determining the pressure loss and associated volumetric flow
The pressure loss currently in the unit can be determined using a differential pressure sensor.
The associated volumetric flow can be determined using the technical tables in the catalogue.
6
5
Pre-commissioning checks
Before initial commissioning, check whether all the necessary conditions have been met so that
the unit can operate safely and properly.
Electrical tests
Check whether all lines have been properly laid.
Check whether all lines have the necessary cross-section.
Are all wires connected in accordance with the electric wiring diagrams?
Is the earth wire connected and wired throughout?
Check all external electrical connections and terminal connections are fixed in place and
tighten if necessary.
Water-side checks
Check whether all supply and drainage lines have been properly connected.
Fill pipes and unit with water and bleed.
Check whether all bleed screws are closed.
Check leak tightness (pressure test and visual inspection).
Check whether the parts carrying water have been flushed through.
Check whether any shut-off valves fitted on site are open.
Check whether any electrically actuated shut-off valves have been properly connected.
Check whether all valves and actuators are working properly (note permitted mounting pos-
ition).
Air-side checks
Check whether primary air is correctly connected to the unit.
Check whether the pressure losses measured on the air side match the volumetric flows re-
quired.
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