Datasheet

Air Supply
Warning
3. Drain flushing
If condensation in the water separator and drain bowl is not
emptied on a regular basis, the bowl will overflow and allow
the condensation to enter the compressed air lines. It causes
malfunction of pneumatic equipment.
If the drain bowl is difficult to check and remove, installation of
a drain bowl with an auto drain option is recommended.
For compressed air quality, refer to SMC’s Best Pneumatics
catalogue.
4. Use clean air.
Do not use compressed air that contains chemicals, synthetic
oils including organic solvents, salt or corrosive gases, as it
can cause damage or malfunction.
Operating Environment
1. Do not use in an atmosphere having corro-
sive gases, chemicals, sea water, water,
water steam, or where there is direct contact
with any of these substances.
2. Do not use in a place subject to heavy vibra-
tion and/or shock.
3. Do not use in an environment where flam-
mable gas or explosive gas exists, as it may
cause fire or explosion. The products do not
have an explosion proof construction.
4. The valve should not be exposed to
prolonged sunlight. Use a protective cover.
5. Remove any sources of excessive heat.
6. In locations where there is contact with spat-
ter from water, oil, solder, etc., take suitable
protective measures.
7. In cases where the vacuum unit is
surrounded by other equipment, or the unit
is energized for an extended time, take mea-
sures to exhaust excess heat so that the
temperature is within specifications.
Caution
1. Under certain conditions, the exhaust of the
vacuum ejector may generate intermittent
noises, and vacuum pressure may be
uneven.
Using the ejector under these conditions will not result in
decreased performance, but if the intermittent noise becomes
a nuisance, or if there is an adverse effect on the operation of
the vacuum pressure switch, try lowering or raising the supply
pressure of the vacuum ejector to find a supply pressure level
at which the intermittent noise ceases.
Piping
Caution
Warning
1. Refer to the Fittings and Tubing Precautions
(Best Pneumatics No. 6) for handling one-
touch fittings.
2. 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.
3. Wrapping of pipe tape
When screwing piping or fittings into ports, ensure that chips
from the pipe threads or sealing material do not enter the
piping. Also, if pipe tape is used, leave 1.5 to 2 thread ridges
exposed at the end of the threads.
Air Supply
Warning
1. Type of fluids
Please consult with SMC when using the product in
applications other than compressed air.
2. When there is a large amount of drainage.
Compressed air containing a large amount of drainage can
cause malfunction of pneumatic equipment. An air dryer or
water separator should be installed upstream from filters.
4. Use piping with an adequate conductance.
Select equipment and piping for the vacuum side which has
an adequate conductance so that the ejector's maximum
suction flow rate can be accommodated by the piping.
Also, make sure that there are no unnecessary restrictions or
leaks, etc., along the course of the piping. Furthermore,
design the air supply taking into consideration the ejector's
maximum air consumption and the air consumption of other
pneumatic circuits.
5. Avoid disorganized piping.
Use direct piping with the shortest possible length should be
used for both the vacuum and supply sides. Disorganized
piping should be avoided. Unnecessary length increases the
piping volume, and the response time.
6. Use piping with a large conductance on the
exhaust side of the ejector.
If the exhaust piping is restrictive, there will be a decline in the
ejector’s performance.
7. Be certain that there are no crushed areas in
the piping due to damage or bending.
Vacuum Equipment
Precautions 2
Be sure to read this before handling.
Winding
direction
Pipe tape
Expose approx. 2 threads
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