BUCHI Inert Loop B-295 - Manual (Page 15)

2 Safety
15 B-290 Operation Manual, Version I
! WARNING
Serious chemical burns by corrosives.
• Observe all data sheets of the used chemicals
• Handle corrosives in well ventilated environments only
• Always wear protective goggles
• Always wear protective gloves
• Always wear protective clothes
• Do not use damaged glassware
• Wear protective mask when working with inhalable particles
2 .5 .4 Safety elements and measures
To arrest electrostatic charges from the instrument, it is internally grounded. Electrostatic charges are
to be arrested from both the product collection vessel via the external (yellow) grounding cable for all
cyclones with grounding socket.
Heating
• Excess temperature protection against uncontrolled overheating.
• Automatic temperature control of the heater and inlet temperature.
• Heater can not be started before the closed loop is inert
Spraying (Pump)
• Pump can not be started before the closed loop is inert
Air/Gas
The system can be used in suction mode (standard) or in pressure mode. The suction procedure used
in the Mini Spray Dryer B-290 produces a light negative pressure in the instrument and thus rules out,
together with the inlet filter and outlet filter, a contamination of the environment through leaking from
the instrumen.
Automatic processing interruption when system pressure is too low in closed mode
• Outlet filter to protect the environment contamination of fine dust particles via exhaust gas tubing
N2 inert gas
The Mini Spray Dryer B-290 Advanced can be used to work with organic solvent in combination with
the Inert Loop B-295.
• Inertization against explosive gas mixtures
• oxygen concentration measurement (inside the Inert Loop B-295)
• pressure measurement (inside the Inert Loop B-295)
The heater and the pump stop if the oxygen level is > 6 vol.% or if the pressure level is < 10 mbar.