STP Series Turbomolecular Pump 
 
INSTALLATION OF THE STP PUMP
 
2.3.2  STP pump installation positions 
The STP pump can be installed vertically, horizontally, upside-down and/or slanted. (Depending 
upon the pump model, the STP pump cannot be installed in some positions. Refer to "TECHNICAL 
DATA" in the STP Pump Instruction Manual (B).) 
 
Figure 15 - STP pump installation positions 
When installing the STP pump in a horizontal or slanted position, it is recommended to install it so 
that the direction of the outlet port is on a vertical or horizontal plane in the direction of the gravity. 
This makes it possible to reduce the load on the magnetic bearing and the heat generated by the 
STP pump. 
 
*  Direction of gravity 
Figure 16 - Positions of the outlet port on the horizontally or slanted installed STP pump