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5.2 Electrical connection
All electrical connection work may only be carried out by qualified personnel. The
relevant connection and performance data of the drive, the sensors or electrical
components must be complied with, further information can be found in the order-
related documentation of the drive, the sensors or electrical components.
Danger of explosion due to incorrect electrical installation of the
motor!
- Always connect motors via the motor protection circuit breaker.
- Observe Regulation IEC60079-14.
- Never operate the inverter outside the permissible area
Check the
order-related documents, operator's manual and nameplates of all
equipment.
- During inverter operation, always provide temperature monitoring
by means of thermocouples (PTC thermistors, PT100, or
thermoswitches) in the winding.
Monitoring parameters: Thermal motor contactor
5.3 Grounding
Danger of explosion due to electrostatic charge!
- All parts must be electrically connected to each other.
- To prevent electrostatic charges as well as to dissipate any
electrical fault currents and leakage currents, potential equalization
between the pump unit and the installation foundation must be
installed by the operating company.
- Plastic parts and plastic cables are to be conductively connected by
bridging.
- The information in the manufacturer's documentation of all devices
and components, e.g., motor, must be observed.
5.4 Filling the pump
A pump interior and seal chamber completely filled with liquid cannot form an
explosive atmosphere. Before the pump is put into operation, the pump interior, the
suction line and the sealing chamber must be filled and vented.
Danger of explosion!
- During filling, standstill and operation of the pumps, an explosive
atmosphere inside the pump must be safely excluded by the
operating company.
- Ex inside (only permitted with double mechanical seal, additional
marking on rating plate X): Pumps in which an occasional
occurrence of explosive gas atmospheres within the pump is
permissible (Category 2, Category 3; IIB; EPL Gb, Gc) must be
excluded from this explosive atmosphere inside the pump during
