Metrohm 731 Relay Box - Manual (Page 11)

2.1 Instrument setup
Relay Box 731, Instructions for use 5
page) corresponds to the local line voltage. If this is not the case
then the correct line voltage must be set as follows:
Pull out line cable
• Pull the line cable out of the line connector of the
731 Relay Box.
Remove fuse holder
• Use a screwdriver to loosen the fuse holder beside the line
connector and pull it out completely.
230 115
Checking and replacing the main fuse
• Carefully remove the fuse from the fuse holder and check its
specifications:
220 … 250 V 10A (slow-blow) Metrohm no. U.600.0026
• Exchange the fuse if necessary and reinsert it in the fuse
holder.
Make sure that the instrument is never operated with any other type of
fuse as otherwise there is a fire hazard!
Change line voltage
• Carefully remove the voltage selector insert with the help of a
screwdriver and rotate it. Replace the insert so that the required
voltage is visible in the fuse holder window.
Replace fuse holder
• Insert the fuse holder and click it into position by pressing it down
strongly with a finger.
Line switch
Line connector
Fuse holder
(main fuse)
Voltage selection insert with
voltage display