Metrohm 743 Rancimat - Manual (Page 26)

3.3 Mains connection ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
18 ￭￭￭￭￭￭￭￭ 743 Rancimat
3.3 Mains connection
Warning
There is a risk of fire if the instrument is operated with an incorrect
mains fuse!
Follow the regulations below for the mains connection.
3.3.1 Checking the mains voltage
Before switching the 743 Rancimat on for the first time, check whether
the mains voltage indicated on the type plate (3-7) corresponds to the
mains voltage present. If this is not the case, please contact Metrohm
Service.
3.3.2 Replacing fuses
Two fuses 4 A (slow-acting) for 115 V or 2 A (slow-acting) for 230 V are
installed in the fuse holder (3-6) of the 743 Rancimat as standard.
Warning
Ensure that the instrument is never put into operation with fuses of
another type, otherwise there is a risk of fire!
Proceed as follows to replace defective fuses:
1 Pull out the mains cable
￭ Pull the mains cable out of the mains connection socket of the
Rancimat.
2 Remove the fuse holder
￭ Use a screwdriver to loosen and completely pull out the fuse
holder (3-6) above the mains connection socket.
3 Replace fuses
￭ Carefully take the defective fuses out of the fuse holder and
replace them with two new fuses suitable for the set mains volt-
age of the type TH (slow-acting, with high switching capacity):
– 115 V 4 A (TH) Metrohm No.: U.600.0022
– 230 V 2 A (TH) Metrohm No. U.600.0107