Initial operation
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1. Disassemble the union nuts on the pump connectors.
2. Remove the sealing plugs.
3. Screw the hoses onto the pump connectors by hand.
Pay attention to the supply and runback position.
4. Screw on the pump connections carefully with a maximum of 3 Nm torque.
5. Set the flow direction adjustment lever to external circulation.
The external system is connected.
If the external system is disassembled, the pump connections must be
resealed with the sealing plugs so that no bath fluid can splash out during
operation.