SIAM SUDOS-mini 2, Руководство по эксплуатации

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8.2.5. Pressure testing
Level gauge is pressurized with oil at 100 atm pressure for 10
minutes on hydraulic test bench SGI-1 IZM 4.137.002. Oil leakage from
the tool is not allowed.
8.2.6. Replacement of the manual valve sealing ring
The sealing ring of the outlet valve (a rubber ring on the valve body)
and sealing rings of the thread jointing coupling (one rubber ring and two
guard split fluoroplastic rings) are subject to replacement.
To replace the manual valve sealing ring, the latter must be removed
from the transmitter, remove the ring from the groove with a sharp
instrument, clean the groove of dirt (petrol, rags) and put a new ring in
place of the old one. Lubricate the ring with CYATIM lubricant GOST
6267-80 before assembly. Then put the valve back in its place.
After the level gauge has been assembled completely, it is obligatory
to test its body for leak-proofness and strength. To do this, assemble the
level gauge on a level gauge tests bench SKU-1 IZM 4.137.003 and test it
for leak-proofness with soap solution (suds) at the pressure of 5…..8 atm.
Slight leak of the valve with formation of small air bubbles around the
outlet hole is permissible. Leak around the movable
coupling- body is not
permissible. Perform a pressure test of the tool according to Section 8.2.5.
of this Instruction. If requirements of leak-proofness have been met, the
tool is allowed for service, otherwise, it is not allowed for service and
should be sent back to ”SIAM Company” in order to avoid trouble.