Azbil ACN Series, Руководство пользователя

Страница: 40 / 100

4-16
Step Procedure
7 After the assembly is complete as above, check the following.
1. Applying an air pressure of 490 kPa {5 kgf/cm²} via the air piping
connection port of the top diaphragm case, check the diaphragm
periphery for air leak by using soapsuds.
2. Check that the actuator smoothly operates at its full stroke.
Note: Check this operation by operating the actuator as an independent unit.
(b) Reverse action type
Step Procedure
1 Fix the bottom diaphragm case and yoke with the bolts.
2 Insert the actuator rod (to which the diaphragm is connected) into the
bushing, exercising care not to damage the bushing inside surface or dust seal
with the thread section of the rod. (For example, cover the threaded section
with adhesive tape to prevent damaging the bushing.)
3 Make the stopper (in the diaphragm plate) in parallel with the yoke by turning
the rod.
4 Install the springs on the spring plate. The quantities of springs are as follows:
Model HA2.................................................................4 springs
Model HA3, HA4 ......................................................8 springs
Except particular models as follows:
Model HA2, 38 mm stroke,
80 - 240 kPa {0.8 - 2.4 kgf/cm²} ............... Total 8 springs (with double springs)
Model HA3, 50 mm stroke,
80 - 240 kPa {0.8 - 2.4 kgf/cm²} ............... Total 16 springs (with double
springs)
Model HA4, 75 mm stroke,
80 - 240 kPa {0.8 - 2.4 kgf/cm²} ............... Total 16 springs (with double springs)
5 Place the top diaphragm case and fix it with the pair of eyebolts. Set the air
vent hole in the location shown in the illustration (Fig. 4-13). Uniformly and
alternately tighten the eyebolts. The initial setting of the springs is complete by
tightening these eyebolts.
Fig. 4-13. Reverse action type
6 Clamp the diaphragm case with other clamping-bolts other than the pair of
eyebolts.