Metrohm 791 VA Detector - Manual (Page 15)

2.2 Mains connection
791 VA Detector
9
12
25
26
13
23
0
11
5
Fig. 3: Setting the mains voltage
2.2.2 Fuses
Two fuses 1 A/slow-blow for 100 … 240 V are installed in the fuse holder
12 of the 791 VA Detector 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, proceed as described in section 2.2.1.
2.2.3 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 26 of the 791 VA De-
tector (see Fig. 3).
2.2.4 Switching the instrument on/off
The 791 VA Detector is switched on and off using mains switch 25.
When the instrument is switched on lamp 1 lights up.
100 – 120 V 220 – 240 V
12 Fuse holder
13 Voltage selection
insert with display
of voltage
25 Mains switch
26 Mains connection
plug