User guide

2. Installation

Relay Box 731, Instructions for use

Checking and replacing the AC fuses

Line voltage outputs AC1 and AC2 have their own fuses.

Fuse 5A(T)

AC 1

• Use a screwdriver to press down strongly the affected fuse holder

and turn it counterclockwise through 90°. Carefully remove the

fuse holder.

• Carefully remove the fuse from the fuse holder and check its

specifications:

220…250 V 5A (slow-blow) Metrohm no. U.600.0023

Please note that the specification of this fuse is different from

that of the main fuse!

• Replace the fuse if necessary and insert it in the fuse holder

again.

Fuse holder AC1