2．Specific Product Precautions 4 - SMC Networks AS1000 Operation Manual

2. Specific Product Precautions
Design/ Selection
Warning
(1) Confirm the specifications.
Do not operate at pressures, temperatures, etc.,
beyond the range of specifications, as this can
cause damage or malfunction. (Refer to the
specifications.)
Please contact SMC when using a fluid other
than compressed air (including vacuum).
We do not guarantee against any damage if the
product is used outside of the specifications
range.
(2)Products mentioned in this catalog are not
designed for use as stop valves with zero air
leakage.
A certain amount of leakage is allowed in the
products specifications. Tightening the needle
to reduce leakage to zero may result in
equipment damage.
(3)Do not disassemble the product or make any
modifications,
machining.
Doing so may cause human injury and/or an
accident.
(4)The flow rate characteristics for each
product are representative values.
The flow rate characteristics are characteristics
of each individual product. Actual values may
differ depending on the piping, circuitry, pressure
conditions, etc. Also, depending on product
specifications, there may be variations in the
zero needle rotations position of the flow rate
characteristics.
Mounting
Warning
(1) Operation Manual
Install the products and operate it only after
reading the operation Manual carefully and
understanding its contents. Also, keep the
Manual where it can be referred to as necessary.
(2)Ensure sufficient space for maintenance
activities.
When installing the products, allow access for
maintenance.
(3)Confirm that the lock nut is tightened.
. A loose lock nut may cause speed changes in
the actuator.
(4) Check the degree of rotation of the needle
valve.
The Products in this catalog are retainer type so
that the needle is not removed completely.
Over rotation will cause damage.
including additional
Warning
(5)Do not use tools such as pliers to rotate the
knob.
This can cause idle rotation of the knob or
damage.
(6) Confirm the air flow direction.
Mounting backward is dangerous, because the
speed adjustment needle will not work and the
actuator may lurch suddenly.
(7)Adjust the speed by opening the needle
slowly from the fully closed state.
Loose needle valves may cause unexpected
sudden actuator lurching.
When a needle valve is turned clockwise, it is
closed and cylinder speed decreases. When a
needle valve is turned counterclockwise, it is
open and cylinder speed increases.
(8)Do not apply excessive force or shock to the
body or fittings with an impact tool.
This can cause damage or air leakage.
Caution
(1)The proper tightening torques for hexagon
lock nuts are shown in the table below. For
standard installation, turn 15 to 30゜using a
tool after fastening by hand.
Pay attention not to over tighten the product.
Check the dimensions for each product for
the width across flats.
Caution
(1) Preparation before piping
Before piping is connected, it should be
thoroughly blown out with air (flushing) or
washed to remove chips, cutting oil and other
debris from inside the pipe.
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Mounting
Piping