Instructions Manual
－
Multiple Roots Type Dry Pump GR60/90/180
YK09-0023-DI-003-02
30
The following list shows parts to be replaced at the time of an overhaul. The replacement period
depends on the part and the parts in the list are grouped by replacement period (years). However,
in some cases, the replacement period depends on the conditions of use.
○
Parts to be replaced at the time of an overhaul
Parts Name
Corresponding Model
Bearing
All models
Power Lock
All models
Mechanical seal
*2
All models
Coupling Spider
All models
O ring
All models
Teflon seal
All models
Vacuum pump oil
All models
○
Parts to be replaced every two years
Parts Name
Corresponding Model
Bearing case
All models
○
Parts to be replaced every three years
Parts Name
Corresponding Model
Seal sleeve
All models
Check valve ball
All models
Pressure meter for nitrogen gas
All models
○
Parts to be replaced every five years
Parts Name
Corresponding Model
Cylinder
*1
All models
Rotor shaft
*1
All models
Vibration absorbing rubber
All models
*1: Perform dimensional measurement and, if deformation is found, replace the part.
*2: If abrasion more than the specified amount is found, replace the part.
