2-6 Section 2: Installing the Model 9500B
Fuse Drawer
Reversed
Fuse position
The fuse rating is:
T 5.0A HBC, 250V, IEC127 for 220/240V line supply.
T 10.0A HBC, 250V, IEC127 for 100/120V line supply.
It is fitted into the reverse side of the Fuse Drawer, in the Power Input module on the rear panel,
and must be of High Breaking Capacity.
WARNING
MAKE SURE THAT ONLY FUSES WITH THE REQUIRED RATED
CURRENT AND OF THE SPECIFIED TYPE ARE USED FOR
REPLACEMENT. SEE THE SAFETY ISSUES SECTION AT THE
FRONT OF THIS MANUAL.
Voltage
Selector
Block
Fuse Drawer
Removed
Release
Catch
Recess for
Screwdriver
Voltage
Indicator
Window
Fuse
Drawer
A window in the fuse drawer allows the line
voltage selection to be inspected. To inspect
the fuse rating the fuse drawer must be taken
out (Refer to sub-section 2.7.4. First switch
off and remove the power cable).
2.7.3 Power Cable
The detachable supply cable, comprising two
meters of 3-core PVC sheath cable permanently
moulded to a fully-shrouded 3-pin socket, fits
in the POWER INPUT plug recess.
The supply lead must be connected to a
grounded outlet ensuring that the ground lead
is connected.
SEE THE SAFETY ISSUES SECTION AT
THE FRONT OF THIS MANUAL.
2.7.2 Power Input
The recessed POWER INPUT plug, POWER
FUSE, POWER SWITCH and LINE
VOLTAGE SELECTOR are contained in an
integral filtered module on the right of the rear
panel (looking from behind the unit).
LINE VOLTAGE
SELECTION
FUSE 5 x 20mm
IEC 127
100V/ 120V
220V/ 240V
T10.0 AH
T5.0 AH
POWER INPUT 400VA max FREQUENCY 47- 63 Hz
2.7.4 Power Fuse
2.7.4.1 Power Fuse Replacement
When the power fuse is to be replaced, proceed as follows:
1. Ensure that the POWER CABLE is removed. Insert a small screwdriver blade in the
narrow recess beneath the catch under the fuse drawer; lever gently downwards until the
catch releases. Pull the drawer out, and reverse it to see the fuse.
2. Check the fuse and replace if required.
3. Check that the desired voltage is visible at the front of the voltage selector block inside the
power module cavity.
4. Insert the fuse drawer into the module and press until the catch is heard to click into place.
2.7 Preparation for Operation (Contd.)