Commissioning; Installation - Grundfos 189 Notice D'installation Et De Fonctionnement

4. Commissioning

4.1 Installation

4.1.1 Installation example
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Fig. 3 Installation example of a chlorine gas dosing system with vacuum change-over device 189
Pos. Description
1 Gas warning system
2 Adsorption filter
3 Vacuum regulator with liquid trap
4 Vacuum change-over device
5 Chlorine drum
4.1.2 Connections
This section refers to fig. 3.
1. Connect the vacuum change-over device (4) at the inlet sides
to two vacuum regulators (3) and at the outlet side to the gas
dosing unit (7).
– The connections for the vacuum regulators (3) are marked
with "IN I" and "IN II". The connection for the dosing unit (7)
is marked with "OUT".
– The vacuum lines between the vacuum regulators (3) and
the change-over device (4) should be kept as short as
possible. The vacuum lines should not exceed a maximum
length of 6 m, in order to minimise the pressure loss.
A precondition for trouble-free functioning of the
vacuum change-over device is the tightness of the
Note whole system. Check the tightness of the system
before startup. See section
tightness.
For electrical connection of the signal transmitter for remote
indication, see fig. 16.
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4.2 Checking the
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Pos. Description
6 Chlorine drum support
7 Gas dosing unit
8 Injector
9 Variable area flowmeter
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