Document No.ZL-OM01001
- 17 -
Maintenance and Inspection
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Implement the maintenance and check shown below in order to use the ejector and the
vacuum system safely and in an appropriate way for a long period of time.
1. Maintenance should be performed according to the procedure indicated in the Operation
Manual. Improper handling can cause damage and malfunction of equipment and machinery.
2. Maintenance work
Compressed air can be dangerous when handled incorrectly. Therefore, in addition to observing
the product specifications, replacement of elements and other maintenance activities should be
performed by personnel with sufficient knowledge and experience pertaining to pneumatic
equipment.
3. Draining
Remove condensate from air filters and mist separators regularly. If the collected drainage is
drained to the downstream side, it can stick inside of the product, causing operation failure and
failure to reach the specified vacuum pressure.
4. Replace the filter element built into the ejector and the vacuum pump system and the silencer
regularly. (Refer to the replacement procedure below.)
It is recommended to replace the filter element and the silencer when the pressure drop reaches
5kPa as a guideline. The replacement cycle varies depending on the operating conditions,
operating environment and supply air quality.
However, if there is a vacuum pressure drop and/or delay in the vacuum (adsorption) response
time which causes problem with the settings during operation, stop the operation of the product
and replace the element regardless of the above mentioned replacement guideline.
5. Operation in an environment where there is a lot of dust in the air
The processing capacity of the filter element built into the product may be insufficient. It is
recommended to use SMC's air suction filter (ZFA, ZFB, ZFC series) in order to avoid problems
beforehand.
6. Check before and after the maintenance work
When the product is to be removed, turn off the power supply, and be sure to cut off the supply
pressure and exhaust the compressed air. Confirm that the air is released to atmosphere.
When mounting the product after the maintenance work, supply compressed air, connect to the
power, check if it functions properly and have a leakage inspection. Especially for the latching
type supply valve, be sure to check that the supply valve is OFF in the initial condition because
it is possible that it is ON due to vibration.
7. Do not disassemble or modify the product, other than the replacement parts specified in this
manual.
8. Do not use solvents such as benzene and thinner for cleaning. These can damage the surface
and erase the marking on the pressure switch. Use a soft cloth to remove stains. For heavy
stains, use a damp cloth that has been soaked with diluted neutral detergent and fully
squeezed, then wipe up the stains again with a dry cloth.
