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4 Check if the filter unit has been switched off by mistake. If this is the case, have
someone else switch on the filter unit or the power supply again. If the alarm stops, you
can continue working. If this is not the case, proceed with point 5.
5 Slowly close all opened reagents and sample containers and clean them from the
outside with the decontamination wipes.
6 In the ST1 safety weighing enclosure, take off the first pair of gloves and possibly the
arm sleeves and dispose of them via the waste system. Now, you can take your hands
out of the safety weighing enclosure and proceed with point 7.
7 Switch off the system and close the opening of the ST1 safety weighing enclosure with
foil to prevent particles from escaping (the foil cannot be applied while the ventilation is
still in operation).
8 Analyse the cause of the error and contact the a1-envirosciences service.
Maintenance and repair
Basic safety instructions for maintenance and repair work
There is an immediate danger to life in case of contact with live parts. In case
of damage to the insulation (visible damage to cables), switch off the power
supply immediately and have repair carried out by qualified personnel.
Please note the following points:
• Only use earthed cables (power cable).
• Always pull the power cable out of the socket by the plug only.
• Have power connections established properly by qualified electricians.
• As long as the mains plug is not disconnected, parts of the unit's electrical
equipment could be live. Disconnect the mains plug before carrying out
maintenance work on the equipment.
• Check the electrical equipment of the unit regularly. Eliminate any damage
immediately. Replace defective cables and plugs immediately.
• Do not bridge any fuses or put them out of operation. When replacing
fuses, observe the correct trigger values.
• Keep moisture away from live parts. This can lead to a short circuit.
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