Speck pumpen Normblock Installation & Operating Manual page 85

5 Installation at Site
1 2
5
Fig. 7: Vacuum balance system
1 Vessel under vacuum
3 Shut-off element
5 Main shut-off element
NOTE
An additional line fitted with a shut-off valve (from the pump discharge nozzle to
the balance line) facilitates venting of the pump before start-up.
5.4.4 Auxiliary connections
DANGER
Risk of potentially explosive atmosphere by mixing of incompatible fluids in the
auxiliary piping
Risk of burns!
Explosion hazard!
▷ Make sure that the barrier fluid and quench liquid are compatible with the
fluid pumped.
WARNING
Failure to use or incorrect use of auxiliary connections (e.g. barrier fluid, flushing
liquid, etc.)
Risk of injuries by escaping fluid!
Risk of burns!
Malfunction of the pump!
▷ Refer to the pump markings for the number, dimensions and locations of
auxiliary connections (if any).
▷ Use the auxiliary connections provided.
Normblock
3 4
6
2 Vacuum balance line
4 Swing check valve
6 Vacuum-tight shut-off element
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