Azbil HLS Series User Manual

4-13
4-4. Disassembly and assembly of model PSA 1
Disassembly procedure
A. Direct action model (see Figure 4-8)
(1) Disconnect the air piping and detach the accessories from the actuator.
(2) Remove the stem connector.
(3) Remove the clamping bolts (except the pair of eyebolts) from the diaphragm case.
(4) Alternatively and evenly loosen the pair of eyebolts. The initial setting of the springs is
achieved using these eyebolts.
(5) Removing the diaphragm case. Pull the actuator rod upward and out together with the
diaphragm.
(6) Take out the springs.
B. Reverse action model (see Figure 4-9)
(1) Disconnect the air piping and detach the accessories from the actuator
(2) Remove the stem connector.
(3) Remove the clamping bolts (except the pair of eyebolts) from the diaphragm case.
(4) Alternately and evenly loosen the pair of eyebolts. The initial setting of the springs is
achieved using the eyebolts.
(5) Remove the diaphragm case. Take on the springs.
(6) Pull the actuator rod upward and out together with the diaphragm.

Azbil HLS Series Specifications

General

Brand	Azbil
Model	HLS Series
Category	Control Unit
Language	English