Hach-Lange POLYMETRON 9245 User Manual - Manual (Page 36)

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Installation
4.4 Step-by-step installation
The electrical installation should be carried out by duly qualified personnel. A supply voltage of
100-240 VAC is acceptable without changing the configuration. The power supply terminals can
be removed from their housing to make connection easier.
For safety reasons, it is imperative to respect the working procedure below:
• Use a three-wire power cable (live + neutral + earth), sized for supplying the required power.
• The instrument should be connected to the mains via a circuit-breaker or fuse whose value
should be less or equal to 20 A. It should be located in proximity and be identified.
• This connection should cut-off the live and the neutral when electrical problems occur or
when the user wishes to intervene inside the instrument. On the other hand, the earth
conductor should always be connected.
4.4.1 Mains power connection
1. Open the glass window and then open the panel to have access to the rear side of the
analyzer.
WARNING
No intervention should be made on the instrument without first switching off the power.