Metrohm 790 Personal IC - Manual (Page 29)

2 Installation
790 Personal IC
20
11 11 11 11
220 ---- 240 V
100 ---- 120 V
12 12 12 12
13 13 13 13
220 ---- 240 V
100 ---- 120 V
Fig. 9: Setting the mains voltage
2.4.2 Fuses
One of the two fuses 1 A/slow-blow for 100…120 V or 0.5 A/slow-blow
for 220…240 V is installed in fuse holder 13 13 13 13 of the 790 Personal IC as
standard.
Ensure that the instrument is never put into operation with fuses of
another type, otherwise there is danger of fire!
For checking or changing fuses, process as described in section 2.4.1.
2.4.3 Mains cable and mains connection
Mains cable
The instrument is supplied with one of three mains cables
• 6.2122.020 with plug SEV 12 (Switzerland, …)
• 6.2122.040 with plug CEE(7), VII (Germany, …)
• 6.2133.070 with plug NEMA 5-15 (USA, …)
which are three-cored and fitted with a plug with an earthing pin. If a dif-
ferent plug has to be fitted, the yellow/green lead (IEC standard) must
be connected to protective earth (protection class 1).
Any break in the earthing inside or outside the instrument can make it
a hazard!
Mains connection
Plug the mains cable into mains connection plug 12 12 12 12 of the 790 Per-
sonal IC (see Fig. 9).
2.4.4 On/off switching of the instrument
The 790 Personal IC is switched on and off using mains switch 11 11 11 11.
When the instrument is switched on, the mains pilot lamp 2 222 lights up.
100 – 120 V 220 – 240 V
11 11 11 11 Mains switch
12 12 12 12 Mains connec-
tion plug
13 13 13 13 Fuse holder