0.2
Electrical hazards
1.
The electrical connections must only be provided by a trained
electrician in accordance with VDE 0105 according to the guidelines of
VDE 0100 (or corresponding to the harmonised national standards and
guidelines which apply in the country where the equipment is being
operated).
2.
The electrical connecting line between the compressor unit and the
cold head must only be connected or disconnected provided the
compressor unit was switched off first and reliably disconnected from
the mains power. Risk of suffering an electric shock. Moreover,
compressor unit and cold head may suffer damage.
3.
Un-authorised conversions and modifications to the equipment are
prohibited for safety reasons.
Hazardous voltages are present inside the cold head. In case of
contact, death or severe injury can result.
4.
After all servicing work, running of an electrical safety test is
mandatory.
5.
Do not expose the cold head to splash or drip water.
6.
Lay the connecting lines so that they cannot be damaged. Protect the
lines against humidity and contact with water.
7.
When storing the cold head and the connecting cables in a humid
atmosphere then these components may corrode. Corrosion forms
conductive deposits which can result in short-circuits or reduced
insulation of voltage carrying parts.
0.3
Thermal hazards
1.
During operation the cold stages become very cold, touching will
cause skin injury. Never operate the cold head without insulating
vacuum.
2.
The cold head motor or the low pressure helium connection can get
hot (50 to 60 °C approx.). Protect parts from being touched
inadvertently and leave these to cool down before beginning any
maintenance work on the instrumentation.
Safety information
5
GA12119_00_A3 - 01/2012 - © Oerlikon Leybold Vacuum
WARNING
CAUTION
