Azbil ACN Series, User Manual

Page: 63 / 100

9-1
Chapter 9. Instruction for Mechanical Flow Stopper of
Actuator
Refer to Fig. 9-1. This flow stopper can be used as minimum flow stopper and maximum flow
stopper as necessary.
9-1. Adjustment for Minimum Flow Stopper
(1) Loosen the whirl-stop to remove the adjust cover for maximum flow stopper from the
housing.
(2) Loosen the hex nuts for minimum flow stopper to remove them from the shaft stopper.
Valve can move in full stroke because the flow stoppers don’t work in this state.
(3) Set the valve position to the desired point of flow stopper.
(4) Screw the hex nuts for minimum flow stopper to the shaft stopper until hitting the
housing.
(5) Tighten the adjust cover for maximum flow stopper and the whirl-stop. Please don’t hit
the maximum stopper and the whirl-stop to the shaft stopper when tightening them.
(6) Lock the whirl-stop.
9-2. Adjustment for Maximum Flow Stopper
(1) Loosen the whirl-stop to remove the adjust cover for maximum flow stopper from the
housing.
(2) Loosen the hex nuts for minimum flow stopper to remove them from the shaft stopper.
Valve can move in full stroke because the flow stoppers don’t work in this state.
(3) Set the valve position to full open.
(4) Screw the hex nuts for minimum flow stopper to the shaft stopper. In this case, adjust the
distance between the hex nut for minimum flow stopper (lower) and the housing to be
greater than rated lift.
(5) Set the valve position to the desired point of flow stopper.
(6) Screw the hex nuts for minimum flow stopper to the shaft stopper until hitting the hex
nuts for minimum flow stopper or the shaft stopper.
(7) Lock the whirl-stop.