Hach BioTector B3500e, User Manual

Page: 53 / 163

Page 53
5.2.3 Wiring External Power Disconnection Switches
The mains power must be connected through one or more external 2-pole disconnection switches, so that the
power to the BioTector and/or to the optional air compressor can be isolated without opening the electronics
enclosure.
•
The external power disconnection switches must be located in easily accessible locations, with a
maximum distance of 2 meters from the BioTector and/or the air compressor.
• The switches must be clearly marked for their purpose.
•
The switch must comply with local electrical regulations, and have a breaking capacity of 10 Amps or
greater.
• The MCB or fuse (circuit breaker) located on the customers fuse board should be rated at 10 Amps or
greater.
Figure 10 below illustrates the positioning and the installation of the disconnection switch.
Figure 10 External Power Disconnection Switch