Dynalab CB300/120V/60 - Manual (Page 3)

The wires in the mains cable are coloured as
follows:
BROWN - LIVE
BLUE - NEUTRAL
GREEN/YELLOW - EARTH
The instruments are fitted with an IEC socket at
the rear of the instrument for connection of the
mains lead. The appropriate mains lead should be
connected BEFORE connection to the mains
supply.
Should the mains lead need replacement a cable
of 1mm
2 of harmonised code H05W-F connected
to an IEC320 plug should be used.
N.B. The UK mains lead is protected by a 10A
fuse mounted in the plug top.
IF IN DOUBT CONSULT A QUALIFIED
ELECTRICIAN
When connected to the mains electricity supply a
green light on the front panel illuminates, except
for the digital SD300 and SD500 models where
the display will illuminate showing the word
“OFF”.
Safety Advice Before Use
❖ If the mains supply is interrupted the units will
restart with its current settings on the
restoration of the electricity supply.
❖ Do not use an instrument with a ceramic top
if the top plate is scratched, chipped or shows
signs of chemical etching.
❖ Position the instrument on a firm level surface
away from any heat sensitive or flammable
material.
❖ Do not use the units with flammable liquids or
in a hazardous atmosphere.
❖ There is a danger of liquid spills if vessels are
stirred too vigorously. Always build stirrer
speed slowly and never stir faster than
necessary.
❖ Never move or carry the instrument until it
has been switched off and allowed to cool.
❖ Never move or carry the unit with containers
on the top plate or while the instrument is
connected to the mains electricity supply.
1
Hot Surfaces
WARNING: The top surface of the
instrument may be HOT. Do not leave
heaters switched on when not in use.
For user safety all heated models are fitted with a
safety light to advise when the top is hot. This
light will flash red on the front panel when the
plate temperature exceeds 50°C and will
continue to flash even if the heater is switched
off so long as the instrument remains connected
to the electricity supply.
Heating
Models SB300, SB302, SB500, CB300, CB302,
CB500:
The knob labelled “Heat” on the front panel
controls the heat output and hence the plate
temperature.
The knob is graduated from 1 - 9. Increasing the
value increases the heat output.
Turn the hotplate control knob clockwise to the
desired setting. The amber load indicator light
will illuminate and it will begin to cycle on and
off when the desired temperature is reached and
the hotplate begins to control.
Models SD300 and SD500:
When connected to the mains electricity supply
the digital display will illuminate and show the
word OFF.
Switch the unit on by pressing the left hand one
of the 2 buttons located to the left of the digital
display. The display will now show the actual
plate temperature in degrees Celsius.
Press and hold the “press to set” button, the
right hand one of the 2 buttons located to the
left of the digital display. The display will now
show the set temperature.
The set temperature may be adjusted by turning
the knob located to the right of the digital
display whilst continuing to hold in the “press to
set” button. When the desired setting is
displayed release the “press to set” button. The
display will revert to show the actual plate