Azbil ACN Series, Руководство пользователя

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2-2
2-3. Items to be checked after installation and before starting operation
(1) Check that there is no leak from air piping.
(2) Check that the bolts and nuts of the diaphragm case are not loose. Standard tightening
torques are listed below:
(3) Tighten the packing flange nuts to prevent leak from the gland packing section. Standard
tightening torques are given in Table 2-2
Table 2-2. Tightening torques of packing flange nuts
Valve
stem
diameter
(mm)
V PTFE
Packing
PTFE
Yarn
Packing
(P4519)
Graphite Yarn Packing
P P6528
P M8590
T2200 + P6710CH (Type2)
V PTFE + PTFE
Yarn
Packing
PTFE + V7233
PTFE + TK2006
10
1 {8}
9 {90} 5 {50} 3 {30}
13 15 {150} 8 {80} 5 {50}
16 24 {240} 13 {130} 8 {80}
20 32 {320} 18 {180} 10 {100}
25 - 28 {280} 15 {150}
30 66 {660} 36 {360} 20 {200}
Note: The tightening torques mentioned in the above are only to given as reference values.
Note that tightening torques may vary depending on the type of packing.
Table 2-3. Tightening Torques of packing Flange Nuts for PTFE yarn (Certified ISO
15848-1-compliant low-emission gland packing)
Model Actuator model Stem size Tightening torque
ACP, ACN
HA2
φ
10 mm 12 N·m
HA3
φ
13 mm 20 N·m
HA3
φ
16 mm 33 N·m
HA4
φ
20 mm 44 N·m
PSA6
φ
30 mm 54 N·m
Table 2-4. Tightening Torques of packing Flange Nuts for expanded graphite (Certified ISO
15848-1-compliant low-emission gland packing)
Model Actuator model Stem size Tightening torque
ACP, ACN
HA2 φ 10 mm 12 → 0 (loosening) → 8 N·m
HA3
φ
13 mm 20 → 0 (loosening) → 13N·m
HA3 φ 16 mm 33 → 0 (loosening) → 22N·m
HA4
φ
20 mm 44 → 0 (loosening) → 30N·m
PSA6 φ 30 mm 54 → 0 (loosening) → 36N·m