Drawmer MC2.1 Monitor Controller - Manual (Page 7)

7 MC2.1 - Monitor Controller
The MC2.1 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.
2: Using a number 1 size pozidrive screwdriver, remove the eight screws that
retain the top cover. Two screws are found along each side and four on the top.
3: W ith the cover removed slide the voltage change-over switch (S14) until the
correct (or nearest) mains input voltage is visible on the switch actuator. The
switch is located to the top right of the main circuit board between the mains
I.E.C. and toroidal transformer.
For conversion to 115Volt AC
(previously set to 230Volt AC).....
4a: Exchange the 160mA fuse below the mains
socket for a similar type rated at 315mA
For conversion to 230Volt AC
(previously set to 115Volt AC).....
4b: Exchange the 315mA fuse below the mains
socket for a similar type rated at 160mA
In all cases:
5: Replace the top cover using the eight screws.
6: Re-connect to mains power source.
POWER CONNECTION
PORTABLE APPLIANCE TESTING
To undergo a Portable Appliance Testing proceedure (commonly known as "PAT",
"PAT Inspection" or "PAT Testing") use any one of the screws that hold the feet to the
bottom of the unit. These screws connect directly to the chassis and provide the
earthing point. If required, the foot can be removed and the cavity probed, or the
screw can be replaced for something more suited to the job, such as a spade
terminal with a M3 thread.