![background image](http://html1.mh-extra.com/html/smc-networks/zq-a-series/zq-a-series_operation-manual_1299196020.webp)
Doc. No. ZQ-OM01301-A
- 19 -
6
.
Vacuum release flow adjusting needle
6.1 Vacuum release flow adjusting method
Vacuum release air is output by turning the release valve ON. The flow rate of vacuum release
air can be adjusted by altering the vacuum release flow adjustment needle.
Loosen the lock nut and adjust the vacuum release flow adjusting needle located at the end of
the lock nut using a flat blade screwdriver, etc. Rotating the vacuum release flow adjusting
needle clockwise decreases the vacuum release flow while counterclockwise rotation
increases it.
Tighten the lock nut after finishing the adjustment of the vacuum release flow adjusting needle
to fix the adjusted position.
6.2
Precaution
1) Leakage cannot be completely eliminated when the needle is fully closed. A certain amount
of leakage is allowed for in the product specifications. Tightening the needle to achieve zero
leakage may result in equipment damage.
2) The vacuum release flow adjusting needle has a retaining mechanism, so it will not turn
further when it reaches the rotation stop position. The needle may break if it is rotated more
than 12 revolutions.
3) When tightening the lock nut, tighten it by approximately 15 to 30 degrees. Pay attention
not to cause breakage due to over tightening.