PerkinElmer AAnalyst 700, User Manual

Page: 71 / 194

Preparing the System
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3 -3
Switching on the system
1. Read the safety information at the front of this guide before you operate the
system.
2. Make sure that the spectrometer system and other ancillary instruments are
correctly installed and connected to their power supplies.
Make sure that the coolant hoses are connected correctly to the spectrometer.
Where applicable, make sure that the cooling system is filled to the
Max
mark ( see ‘Filling the cooling system’, page 2-18 ).
3. Switch on the fume ventilation system for the work area.
4. Turn on the burner gases and adjust the outlet gauge pressures to the
recommended values ( see Table 3-1 on page 3-5 ).
Always set the same outlet gauge pressure for air and nitrous oxide.
5. Turn on the inert (and special) gas for the furnace and adjust the outlet gauge
pressures to the recommended values ( see Table 3-2 on page 3-6 ).
Note: You must always turn on the air supply since air pressure is required for
the internal pneumatic system. If you intend to work with only one atomizer, you
only need to additionally turn on the gas supplies for that atomizer.
6. Turn on the cooling water to the system:
1. If you are using the circulatory cooling system, switch it on by pressing
the power switch located on the rear panel.
You can leave this switch permanently in the on position since power is supplied
by the spectrometer.
2. If you are using the main water supply, set a flowrate of approximately
2.5 L/min.
Note: If the water is too cold or flowing too fast, moisture may condense
on the graphite contacts or on the furnace windows. Moisture on the
graphite contacts leads to shorter lifetimes of the graphite tube and
contacts, while moisture on the windows leads to a reduction in the
radiant energy.
7. Switch the circuit breaker on the rear panel of the spectrometer to the on
position (marked ).
You can leave this switch permanently in the on position during routine operation;
you switch the spectrometer system on and off via the operational on/off switch
located on the front panel.