Instruction manual

160GR Natural Gas Booster Instruction Manual
Mayekawa all rights reserved. Subject to change without notice. Lat revised in October 2007 p.5
settings, make sure that the compressor is at a stop and that the gas inside the compressor is
discharged in the air.
Vi should not be changed while the compressor is running.
To Change Vi Settings
[CAUTIONS]
・ On this compressor, Vi should be changed after the compressor is opened to the
atmosphere.
・ Vi settings should be changed while the compressor is stopped. Also, make sure the drive is
not moving or will not move.
・ The interior air pressure of the compressor needs to be equal to the air pressure before
proceeding with changing Vi settings.
Figure1: Variable Vi Structure Cut-up View
The compressor is set at the M port when shipped. Choose the most appropriate Vi setting
for the expected operating conditions.
When the appropriate port is to be other than the M port, the Vi setting needs to be changed
before operations. When the pressure conditions dramatically change during an operation,
the Vi needs to be changed to an appropriate setting.
There are 4 ports: H (Vi=5.0), M (Vi=3.65), L (Vi=2.63), K (Vi=2.3).
3.1.1 When the position of the current port is known
When the position of the current port is known, change the Vi setting by referring to
[Graph1] and choosing the appropriate number of rotations and the direction of the rotation.
a) Make sure the slide valve is on full-load on the current Vi condition (Turn the capacity
control handle in clockwise until it stops).