Maintenance; Rotor Life - Agilent Technologies TwisTorr 305-IC Mode D'emploi

Maintenance

Maintenance is not required unless the yellow LED is on. To check the error
you can read the code via serial connection. If a pump sits for a prolonged
amount of time, a visual check of the DB15 connection is recommended to
make sure it is free of oxidation. Any other maintenance must be performed
be authorized personnel.
Before carrying out any work on the system, disconnect it from the power
WARNING!
supply, vent the pump with the vent valve, wait until the rotor is completely
stopped and wait until the surface temperature of the pump is below 50° C.
In the event the pump fails, you can use the Agilent repair service or the
"Agilent advanced exchange service", which gets you a remanufactured
system to replace the failed system. The exchange 305-IC is shipped when
the order is placed. You then return the failed 305-IC in the box that the
exchange 305-IC comes in.
Before returning a pump for repair or advanced exchange service to the manufacturer,
NOTE
it is essential to complete and send to the local sales office the "Request for Return"
form attached to this instruction manual. Copy of the same must be inserted in the
packaging of the system before shipping.
If a system needs to be scrapped, ensure that local regulations are followed
for appropriate disposal.

Rotor life

The fatigue resistance of 305-IC turbomolecular pump rotor resulting from
theoretical evaluation is 405000 cycles of ramp up from stop to full speed and
back to stop.
As a precautionary measure, considering the typical usage of the pump and
taking into account safety limits, Agilent recommends to return the pump
after 17 years of use for maintenance.
TwisTorr 305-IC User Manual / 87-901-058-01
Instructions for Use

Maintenance

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