4
DRAWMER
The CPA-50 unit will be supplied with a power cable suitable for domestic power
outlets in your country. For your own safety, it is important that you use this cable to
connect to the mains supply earth. The cable must not be tampered with or modified.
The power supply socket has an integral fuse drawer containing the power fuse of
the same value, to suit the mains voltage for which the unit has been supplied.
Removal of the drawer is only possible with the power cord removed. The fuse
should never blow under normal operation. If the fuse is suspected of having blown,
then a fault will have occurred and this fault condition should be inspected by a
qualified service engineer. When replacing the fuse, always comply with the Safety
Instructions.
If the unit is to be used with a mains input
operating voltage different to that for which
the unit is supplied, the following
procedure must be carried out by a
technically competent person:
1: Disconnect the unit from the mains
and cable.
2: Using a No.1 size pozidrive
screwdriver, remove the four screws
that retain the top cover.
For conversion to 230Volt AC
(previously set to 115Volt AC).....
3a. remove the jumper across the
CON101 socket
3b. Exchange the T800mA fuse below
the mains socket for a similar type
rated at T500mA
For conversion to 115Volt AC
(previously set to 230Volt AC).....
4a. Add a jumper across the CON101 socket
4b. Exchange the T500mA fuse below the mains
socket for a similar type rated at T800mA
In all cases:
5: Replace the top cover using the four screws.
6: Re-connect to mains power source.
POWER CONNECTION
PORTABLE APPLIANCE TESTING
To undergo a Portable Appliance Testing procedure (commonly known as "PAT",
"PAT Inspection" or "PAT Testing") remove the screw on the right side of the CPA-50,
nearest the IEC socket that holds the cover in place and probe in this cavity.
Alternatively, the screw can be replaced for something more suited to the job, such
as a spade terminal with a self tapping M3 thread.
