User Manual

2 Installation
753 Suppressor Module / 8.753.1003 Instructions for Use
8
2.2 Mains connection
Follow the instructions below for connecting to the power supply. If
the instrument is operated with the mains voltage set wrongly and/or
wrong mains fuse there is a danger of fire!
2.2.1 Setting the mains voltage
Before switching on the 753 Suppressor Module for the first time, check
that the mains voltage set on the instrument (see Fig. 2) matches the
local mains voltage. If this is not the case, you must reset the mains
voltage on the instrument as follows:
1
Disconnect mains cable
Disconnect mains cable from mains connection plug 1919 of the
753 Suppressor Module.
2
Remove fuse holder
Using a screwdriver, loosen fuse holder 2020 below the mains
connection 1919 and take out completely.
3
Check fuse
Carefully take the fuse installed for the desired mains voltage out
of fuse holder 2020 and check its specifications (the position of the
fuse in the fuse holder is marked by the white arrow imprinted
next to the mains voltage range):
100……120 V 0.5 A (slow-blow) Metrohm No. U.600.0013
220……240 V 0.25 A (slow-blow) Metrohm No. U.600.0010
4
Insert fuse
Change fuse if necessary and reinsert in fuse holder 2020.
5
Install fuse holder
Depending on the desired mains voltage, insert fuse holder 2020 in
the 753 Suppressor Module so that the corresponding mains
voltage range can be read normally and the adjacent white
arrow points to the white bar imprinted below the fuse holder
(see Fig. 4).