16 Instructions for Use
268/342 TwisTorr 74 FS User Manual / 87-901-053-01
Storage
In order to guarantee the maximum level of performance and
reliability of Agilent Turbomolecular pumps, the following guidelines
must be followed:
when shipping, moving and storing pumps, the following
environmental specifications should not be exceeded:
temperature range: -40 °C to 70 °C
relative humidity range: 0 to 90 % (non condensing)
the turbomolecular pumps must be always soft-started when
received and operated for the first time by the customer
the shelf life of a turbomolecular pump is 12 months from the
shipping date.
CAUTION!
If for any reason the shelf life time is exceeded, the pump has to be returned to
the factory. Please contact the local Agilent Vacuum Sales and Service
representative for informations.