Seiko Instruments MT-17E-003-D Size of bolt, Tightening torque of bolt Nm, 12.0, 24.1, 42.1

STP-H600/H1000 Series Instruction Manual

3.3.3How to Secure the STP Pump

◇The STP pump is provided with a high-speed rotor. The worst-case failure may result in a jump in rotational torque leading to personal injury or peripheral equipment damage.

The method of securing the STP pump will depend on the installation requirements. Secure the STP pump to the vacuum equipment as follows:

◇Design and secure the mounting for the STP pump so that it can withstand the maximum rotational torque. Refer to Table 3.2 for torque in pump abnormality.

No

Damper

Yes

with bolts

Secure the inlet port

with Claw Clamps

Refer to “1) When securing the inlet port with bolts”

Refer to “2) When securing the inlet port flange with claw clamps”

Refer to “3) When installing the damper in the inlet port flange”

◇In some cases, the damper and the claw clamper securing cannot be used depend on the type of the STP pump.

◇Refer to Table 3.1 for tightening torque of the bolt.

Table 3.1 Tightening torque of bolt

Size of bolt	Tightening torque of bolt (Nm)
M8	12.0
M10	24.1
M12	42.1

◇When making the leg to secure the base, make them shortened more than ones attached to the STP pump.

Use a material that has a tensile strength of 600N/mm2 or more.

◇When securing the base, use stainless steel securing bolts with a tensile strength class is 70 or more.

◇When using any securing method other than that specified in this manual, contact Seiko Instruments.

3-8