-48-
No. ZK2-OM01301
8. Maintenance
8.1. Maintenance
Implement the maintenance and check shown below in order to use the ejector and the vacuum
pump 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 valve type R, 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) Tighten to the specified tightening torque.
If the tightening torque is exceeded, the product, the mounting screws, brackets and the pressure switch
can be broken. Insufficient torque can cause displacement of the product and the pressure switch from each
proper position and loosening of the mounting screws.