Installation - Wavetek 39A Maintenance Manual

Mains Operating Voltage
Check that the instrument operating voltage marked on the rear panel is suitable for the local
supply. Should it be necessary to change the operating voltage, proceed as follows:
1) Disconnect the instrument from all voltage sources.
2) Remove the screws which retain the top cover and lift off the cover.
3) Change the transformer connections following the diagram below.
4) Refit the cover and the secure with the same screws.
5) To comply with safety standard requirements the operating voltage marked on the rear panel
must be changed to clearly show the new voltage setting.
6) Change the fuse to one of the correct rating, see below.
for 230V operation connect the live (brown) wire to pin 15
for 115V operation connect the live (brown) wire to pin 14
for 100V operation connect the live (brown) wire to pin 13
Fuse
Ensure that the correct mains fuse is fitted for the set operating voltage. The correct mains fuse
types are:
To replace the fuse, disconnect the mains lead from the inlet socket and withdraw the fuse drawer
below the socket pins. Change the fuse and replace the drawer.
The use of makeshift fuses or the short−circuiting of the fuse holder is prohibited.
Mains Lead
When a three core mains lead with bare ends is provided it should be connected as follows:−
Any interruption of the mains earth conductor inside or outside the instrument will make the
instrument dangerous. Intentional interruption is prohibited. The protective action must not be
negated by the use of an extension cord without a protective conductor.
Mounting
This instrument is suitable both for bench use and rack mounting. It is delivered with feet for
bench mounting. The front feet include a tilt mechanism for optimal panel angle.
A rack kit for mounting in a 19" rack is available from the Manufacturers or their overseas agents.
for 230V operation:
for 100V or 115V operation:
Brown −
Blue −
Green / Yellow −
WARNING! THIS INSTRUMENT MUST BE EARTHED
250 mA (T) 250V HRC
500 mA (T) 250V HRC
Mains Live
Mains Neutral
Mains Earth

Installation

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