3.4 Power Supply
Electrical safety
Warning: Do not operate the unit without a permanent earth connection. Use the
cable provided at the rear of the unit.
Warning: Before removing any covers or performing maintenance repair and service,
isolate from electrical supply by removing mains plug. Where mains supply is
required during these activities, only competent persons should perform the work.
Check that the power supply is compatible with the requirements stated on the label
and connect in accordance with IEE regulations or to local electrical installation
regulations.
The power cable is coded as follows: -
Brown wire L Live or Power
Blue wire N Neutral
Green/Yellow wire E Earth or Ground
Note: Do not use the machine with wet hands. Dry hands before operating.
Organisations have an obligation to ensure equipment is maintained and is safe for
use. Regular Portable Appliance Testing (PAT) is one means of ensuring equipment
continues to be electrically safe. For operator safety, regular earth bonding
checks are recommended.
Do not flash test this electronic equipment.
4 Controls (refer to figures 1 & 2)
4.1 Mains ON/OFF switch (at the rear of the machine).
This will switch on the power to the machine. The display will briefly indicate
“Multiplex 50” before indicating the selected platen speed.
The LCD display has a back light which is illuminated when the machine is switched
on.
4.2 Emergency stop switch
This is the large red knob on the front panel. Pressing this switch stops the platen
from travelling in either direction. When this switch is pressed, the display will read
“EMERGENCY STOP BUTTON PRESSED Release button to proceed”. As a safety
feature, once this switch has been depressed, it latches in the off position and must
be physically pulled out to the on position before any other functions will operate.
This is a non isolated product. The signal plus control connections are not isolated
from the AC supply. [Note that the unit is isolated design of the machine].
Portable Appliance Tests (PAT)
All designed products are tested for electrical safety prior to sale.
An electrical safety test label is fitted, (usually adjacent to the mains input socket).
Should no label be found, please contact Service Department quoting the serial
number of the equipment.
If in doubt as to the most suitable connection point (which will usually be an
earth stud or an external earth connection) contact Service Department for
assistance.
Original Instructions 7
