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3.
PRELIMINARY
3.1. ENVIRONMENT
The instrument is intended for desktop use in a normal factory, office, or clinic environ-
ment in temperatures between +5°C and 40°C and up to 90% humidity without conden-
sation.
3.2.
CONNECTING THE MAINS SUPPLY
12
Before connecting a mains supply, the following checks and adjustments should be car-
ried out to ensure safe operation of the instrument.
Mains Voltage Setting
The 2116 may be operated from 100, 115, 127, 200, 220 or 240V AC,
±10%,
50 to
-400Hz. The VOLTAGE SELECTOR is on the rear panel. To select the correct mains vol-
tage setting, insert a widebladed screwdriver or small coin into the slot provided and
turn until the correct voltage setting is indicated by the arrow at the top of the fixed rear
plate.
Mains Fuse Rating
When used with a voltage from
1
00 V to
1 2 7
V, a slow blow (Type T) fuse with a rating
of 250 mA should be used; with voltages from 200 V to 240 V AC, a slow blow fuse of
125 mA should be used.
Make sure that only fuses with the required rated current and of the specified type are
used for replacement
.
The use of mended fuses and the short circuiting of fuse holders
is prohibited
.
Mains Input Connection
Once the mains voltage setting and fuse have been checked, the mains supply may be
connected to the MAINS INPUT socket of the apparatus using the Power Cable AN 001 0
provided. To fit a suitable mains plug to the cable see Fig.3.1
.
For maximum operating safety the protective (green
/
yellow) conductor of the power
cable should be connected to a suitable earth, such as the protective earth contact of a
mains socket outlet
.
The use of extension cables without protective conductor shall be
avoided
.
In countries where the use of mains socket outlets without protected earth conductor is
standard
,
the mains supply should incorporate an authorised earth leakage circuit
breaker.
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