Connecting The Compact Dosing Unit; Installation Example; Startup - Grundfos Vaccuperm VGB-103 Montage- Und Betriebsanleitung

5.2 Connecting the compact dosing unit

Warning
Before connecting, ensure that the valve of the
chlorine container is closed.
The compact dosing unit has to be operated in the
chlorine room.
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Fig. 11 Connections
Pos. Description
1 Vacuum line (to the injector)
2 Overpressure line
1. Position chlorine containers and protect them from turning
over or rolling away.
2. Clean and dry the connections, if necessary.
3. Remove the protective cap from the container valve.
Warning
Replace the gaskets of the pressure connection at
any change of container.
Use the filter at the pressure connection.
4. Insert the gasket at the pressure connection of the compact
dosing unit.
– Replace the filter at the pressure connection, if necessary.
Do not align the device by turning the housing. If
necessary, hold up with a 13-mm fork wrench.
Caution
Make sure that the vacuum connections are clean
and dry.
5. Mount the compact dosing unit onto the container connection.
For details on vacuum lines, see section
5.1 Selection of vacuum
Caution
Only tighten the union nuts of the vacuum
connections by hand. Do not use any tools. Danger
of damages!
6. Connect the overpressure line (2) to the adsorption filter.
7. Connect the vacuum line to the injector.
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2
lines.

5.3 Installation example

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3
6
Fig. 12 Chlorine gas dosing system with one cylinder
Pos. Description
1 Chlorine cylinder
2 VGB-103 compact dosing unit
3 Adsorption filter
4 Injector
5 Gas warning device
Gas sensor
6 The sensor has to be installed at a maximum distance
of 10 cm below the outlet hole of the adsorption filter.

6. Startup

Warning
The chlorine gas dosing unit can only be started after
its good condition has been checked by an expert,
see 2.3 Qualification of the
gas-leading parts have been checked for their
tightness.
Check the tightness of the entire system before start-up. Check
the tightness of the valves using ammonia water (small plastic
bottle). White mist indicates leakages.
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1
4
users, and especially