PISCO VTA Series, Инструкция по эксплуатации, Страница: 10 / 28

9 . In installing vacuum pad holders of general and small type with bulkhead, check the
structure and tighten the hexagonal-column of the holder with a proper tool, referring to
the following tightening torque.
Vacuum pad holder Standard Small
Holder type VPA
VPC, VPD,
VPF,
VPHC,
VPHD,
VPHDW
VPE VPMA
VPMC,
VPMD
VPME
Bulkhead nut size
（㎜）
Tightening torque
（
N·m
）
M3×0.5 — — 0.7 — — 0.7
M4×0.5 — — — 1 ~ 1.2 — —
M4×0.7 1 ~ 1.2 — — — — —
M5×0.5 1.5 ~ 2 — — 1.5 ~ 2 — —
M5×0.8 — — 1 ~ 1.5 — — 1 ~ 1.5
M6×0.75 2 ~ 3 — — 2 ~ 3 —
M8×0.75 2.5 ~ 3.5 1.8 ~ 2.4 — 2.5 ~ 3.5 —
M8×1 — 1.8 ~ 2.4 — — — —
M10×1 5 ~ 7 4.5 ~ 6 — 5 ~ 7 4 ~ 6 —
M12×1 12 ~ 14 8 ~ 10 — — — —
M14×1 18 ~ 21 4.5 ~ 6 — — — —
M16×1 — 2 ~ 3 — — — —
M20×1 19 ~ 21 — — — — —
M22×1 — 16 ~ 20 — — — —
M24×2 40 ~ 50 — — — — —
M30×2 — 42 ~ 54 — — — —
10. In replacing vacuum pad rubbers of Standard Series
ø
80,
ø
100mm,
ø
150mm,
ø
200mm
and Bellows Series
ø
80mm,
ø
100mm, check the structure of holders and pads and
tighten the hexagonal-column of the holder with a proper tool, referring to the following
tightening torque.
●Table. Tightening torque
Screw size
（㎜）
Tightening torque
（
N·m
）
M4×0.7
0.5 ~ 0.7
M5×0.8
11.
12.
13.
14.
15.
Check the structure of vacuum pad in the catalog before replacing a filter element.
Refer to “Common Safety Instructions for Fittings” for handing fitting joint
parts.
In installing spring-holder type, do not hold the shaft A with a spanner.
In replacing vacuum pad, hold the hexagonal-column of the shaft with a
spanner. If the keyway B is deformed, there is a possibility of malfunction.
Excessive tightening of a fixing nut may deform the bulkhead part and B
result in malfunction of the keyway.
As the nature of rubber, powdery component like additives may come out
on the surface of a vacuum pad as time elapses.
A
｝
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