Maintenance; Rotor Life - Agilent TwisTorr 305-ICQ Manual Del Usuario

Instructions for Use

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 TwisTorr 305-ICQ & 305-IC SF in the box that the exchange
TwisTorr 305-ICQ & 305-IC SF comes in.
Before returning a pump for repair or advanced exchange service to the
NOTE
manufacturer, 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 TwisTorr 305-ICQ & 305-IC SF 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.
198 Agilent TwisTorr 305-ICQ & 305-IC SF User Manual