[Chap. 1
1
5SAFETY
The 7061 has been designed in accordance with the IEC publication 348 (Class 1), 'Safety
Requirement for Electronic Measurement Apparatus', and has been supplied in asafe
condition. This operating manual contains information and warnings which must be
followed in order to ensure safe operation and to keep the equipment in asafe condition.
The operating instructions include safety precautions where appropriate, but the
principal ones are also listed below.
5.1 GENERAL SAFETY PRECAUTIONS
1. Before switching on, ensure that the mains lead is connected to the ac supply in
accordance with the colour code.
2. Ensure that the mains voltage selector is correctly set.
3. Ensure that the mains plug is connected only to amains outlet which has a
protective earth contact. This applies equally if an extension lead is used: the lead
must contain an earth conductor.
4. For earthing, the mains plug must be inserted before connections are made to
measuring and control circuits. The mains plug or external earth (as appropriate)
must remain connected until all measuring and control circuits have been
disconnected.
5. Any interruption of the earth connection (inside or outside the 7061) is prohibited.
6. When the 7061 is connected to its supply the opening of covers or removal of parts
couid expose live conductors. The 7061 should be disconnected from all voltage
sources before it is opened for any adjustment, replacement, maintenance or repair.
Adjustments, maintenance or repair of the 7061 when it is powered should not be
attempted. Consult aSolartron Service Centre if repairs are necessary.
7. Ensure that fuses of the correct rating and of-the specified type are Fitted. Makeshift
fuses, and short-circuiting of fuse holders, is prohibited.
8. Whenever it is likely that the safety of the 7061 has been impaired, it should be
switched off and not used again until repaired. Safety could be impaired if the 7061:
a. shows visible damage
b. fails to perform intended measurements
c. has been subjected to prolonged storage under unfavourable conditions
d. has been subjected to severe transport stress.
9. The 'A' and Tsymbols on the 7061 mean 'Refer to Operating Manual' for detailed
instructions or safety precautions.
5.2 EARTHING
For safety, an earth connection is essential whenever measurement and control circuits
are connected, even if the 7061 is switched off. The instrument is earthed by connecting it
to amains outlet or other suitable earthing point. This earth should be capable of
carrying 25 Aand conform to the regulation in 'British Standard Code of Practice CP10 13
1965, Earthing'.
BRS/7061/2 1.5
