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30
2.4,
MAINS (LINE) VOLTAGE SETTING AND FUSES
Before inserting the mains plug into the mains socket, make sure that the instrument is set to the local mains
voltage.
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 shall be avoided. The instrument shall be
disconnected from all voltage sources when a fuse is to be replaced or when the instrument is to be adapted
to a different mains voltage.
The instrument can be set to operate on the following mains voltages:
110 V, 220 V and 240 V a.c. (+ 10 %).
These nominal voltages can be selected by means of the mains voltage selector, with fuse-holder, located at the
rear (see Fig. 15).
For mains voltage selection, proceed as follows:
—
Remove the inner portion of the selector (the fuse-holder) using a screwdriver.
—
Select one of the three mains voltage ranges, as appropriate, by turning the outer portion of the selector
with a screwdriver.
.
—
Fit the appropriate fuse rating as follows:
110 V a.c. — 1 A delayed-action
220 V a.c. — 500 mA delayed-action
240 V a.c. — 500 mA delayed-action
On delivery, the instrument is set to 220 V a.c.
A thermal fuse is fitted in the mains transformer; if replacement is necessary, it must be carried out only by a
skilled person who is aware of the danger involved, in accordance with Section 6.1.1. of the Service Manual.
MAINS VOLTAGE
SELECTOR WITH
FUSE HOLDER ©
Fig. 16.
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