en – Original Instructions
30 e-SHE, e-SHS – Additional Installation, Operation and Maintenance Instructions
6 Maintenance
6.1 Precautions
Before starting, make sure that the instructions shown in Introduction and Safety on page 5
have been fully read and understood.
WARNING:
Maintenance must be done by a technician possessing the technical
-
professional requirements
outlined in the current regulations.
WARNING:
Always wear personal protective equipment.
WARNING:
Always use suitable working tools.
WARNING:
In the case of liquids that are excessively hot or cold, pay attention to the risk of injury.
DANGER: Electrical hazard
Before starting work, check
that the unit is unplugged and that the electric pump, the control
panel and the auxiliary control circuit cannot restart, even unintentionally.
DANGER: Electrical hazard
If the unit is connected to the frequency converter, disconnect the mains power s
upply and
wait at least 10 minutes for the residual current to dissipate.
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