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Safety instructions
2.5.2
Hazards associated with the operation of the flame and the graphite furnace
26
plate of the equipment. The protective effect must not be invalidated by the use of
an extension line which does not have a protective conductor.
The novAA 800 and its system components must always be switched off before be-
ing connected with one another.
The auxiliary components that are to communicate with each other, for example
PC, monitor, printer, hydride system and cooling unit, have to be connected to the
power strip that is supplied with the device. The compressor needs a separate
power supply. When connecting own components to the power strip, observe the
maximum allowable drain current.
Before opening the device, it must be switched off on the device switch and the
mains connector must be disconnected from the mains outlet!
The novAA 800 must be switched off before carrying out any electrical work and
the mains plug must be pulled out. Safe disconnection from the mains can only be
achieved by pulling out the mains plug. The power strip is still energized, even
when the novAA 800 is switched off at the mains switch on the right side wall. The
power strip socket to which the novAA 800 is connected is protected by a fuse in
both wires, one in the L conductor (line) and one in the N conductor (neutral). This
can mean in the case of a fault that connected components are supplied with volt-
age via the L-line, but no current can flow through the N-line. Without a more
thorough check, the connected devices appear to be voltage-free, which is not true.
Any work on the electronics (behind the device enclosure) may only be carried out
by the customer service of Analytik Jena and specially authorized technicians.
HCL, D
-HCL, the heated graphite tube (T > 1000 °C) and the flame of the burner
2
transmit optical radiation (in the UV range and the visible range). Do not look into
the rays emitted by the lamp, the graphite tube or the flame without UV protection
goggles. Protect the skin against UV radiation.
Switch off the lamp by means of the control and analysis software ASpect LS before
opening the lamp door: Set the lamp current in [mA] to zero in the O
section of the S
PARAMETERS
list B
CORRECTION and select the option
ACKGROUND
[C
]. Negate the error message.
ONFIGURE
To observe the placement of the samples or the drying of liquid samples, the dental
mirror may only be inserted into the beam path from the left side of the graphite
furnace. When observing on the right side of the furnace, UV radiation may be re-
flected.
The sample chamber door (safety glass pane) must be closed and the flame super-
vised when it is burning. Ensure that the flame detector is working correctly.
For devices with hydride technique, only work with the sample chamber door
(safety glass pane) closed.
The fuel gas pressure must not fall below 70 kPa to prevent the flame from firing
back. The integrated pressure sensor will automatically switch off the novAA 800 if
this condition is not met. In addition to that, monitor the pressure on the pressure
gage of the gas supply.
/ C
window. Open the drop-down
PECTROMETER
ONTROL
novAA 800
PTICAL
. Click
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