5 Installation at Site
44 of 116
CHTRa
1
2
5
4
3
6
Fig. 24:
Vacuum balance system
1
Vessel under vacuum
2
Vacuum balance line
3
Shut-off element
4
Swing check valve
5
Main shut-off element
6
Vacuum-tight 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.
5.16.7 Bypass and balancing lines
CAUTION
Impermissible piping layout
Damage to the balancing system
▷
When installing the bypass line and the balancing line, the minimum flow
diagram and/or P + I diagram must be observed.
▷
Install an orifice immediately ahead of the inlet vessel to avoid vaporisation.
5.17 Electrical connection
DANGER
Electrical connection work by unqualified personnel
Risk of fatal injury due to electric shock!
▷
Always have the electrical connections installed by a trained and qualified
electrician.
▷
Observe regulations IEC 60364 and, for explosion-proof models, EN 60079.
WARNING
Incorrect connection to the mains
Damage to the mains network, short circuit!
▷
Observe the technical specifications of the local energy supply companies.
1. Check the available mains voltage against the data on the motor name plate.
2. Select an appropriate starting method.
