Air Quality - CKD MN4KB2 Series Instruction Manual

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OPERATION

5.3 Air Quality

 
WARNING  : 
 
CAUTION  : 
5.3.1 Lubrication
The MN4KB2 Series solenoid valve systems use pre-lubricated valves that
usually do not require lubrication from the outside. If you have to lubricate
a valve, use Type 1 turbine oil (ISO-VG32) without additives.
Excessive lubrication and extremely low pressure may cause a longer re-
sponse time. The response time in the catalogue assumes no lubrication
from the outside and the air supply pressure of 0.5 MPa.
5.3.2 Ultra-dry compressed air
The use of ultra-dry compressed air will cause splashing of the lubrication oil
and result in a shorter service life.
5.3.3 Drain
(1) The drain is produced by a drop of temperature in pneumatic piping and de-
vices.
(2) The drain may enter and instantaneously block a passage inside a pneumatic
device and cause a malfunction.
(3) The drain accelerates the production of rust, which may cause the failure of
pneumatic devices.
(4) The drain may wash away the lubrication oil, causing a malfunction from the
lack of lubrication.
[SM-213928-A/2]
a)  Do not supply anything other than compressed air. 
b)  Supply  clean  compressed  air  without  any  mixture  of 
corrosive gas. 
a)  Compressed  air  usually  contains  a  large  amount  of
drain,  oxidized  oil,  tar,  foreign  matter,  and  rust  from 
the  piping.    Filter  out  those  elements  in  the  supplied 
air  because  they  may  cause  a  malfunction  and  de-
crease    service  life.    In  addition,  clean  the  exhaust 
before it is released to the air to minimize pollution. 
b)  Once  you  have  lubricated  a  pre-lubricated  valve,  the 
valve is no longer capable of running without being lu-
bricated  from  the  outside.    Do  not  leave  the  valve 
without lubrication but keep it lubricated. 
c)  Do  not  use  spindle  oil  or  machine  oil.    They  may  in-
duce expansion of the rubber parts, which may cause 
a malfunction.
―27―

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