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STA-CK-305
7
Operating Instructions available online
Only use “gas approved" test hose
For use with nitrogen (N2) gas only
Safety goggles must be worn at all times
STAUFF pressure gauges are safety pattern type according to AS1349
Only use “gas approved" test hose
For use with nitrogen (N2) gas only
Safety goggles must be worn at all times
STAUFF pressure gauges are safety pattern type according to AS1349
Applying the Pre-charge Pressure (Accumulator has no gas)
Charging Valve Connected Directly to Regulator
Typical Installation
Remove any plastic plugs that are tted to the accumulator uid port. Remove the accumulator gas valve protection cap and gas valve screw
cap tted to the gas side of the accumulator. Prepare a container to catch any uid which may drain from the uid port during charging.
Refer to page 4 for connection ow chart
▪ Ensure regulator used is tted with STAUFF SKK-20 tting
▪Make sure main valve on nitrogen gas bottle is closed
▪ Connect SDA-20 adaptor end (C) of charging valve (1) to SKK-20 test coupling (3) tted to the regulator
▪Connect gauge + adaptor (4) to charging valve (A)
▪ Connect one end of the gas hose to the SKK test coupling (E) on the charging chuck adaptor (2)
▪Connect remaining gas hose end to the charging valve connection (B)
▪ Ensure the tee handle on the charging chuck adaptor (2) is screwed back fully (turn anti-clockwise).
▪Fit the charging chuck adaptor (2) to the gas valve on the accumulator. Be sure to not to overtighten.
▪ To open the gas valve tted to the accumulator, slowly turn the tee handle on the charging chuck adaptor (2) clockwise until a slight
resistance is felt. Further rotation of the tee handle at this point might cause damage to the gas valve.
▪ Ensure that the bleed valve (D) is open so that some of the gas from the nitrogen gas source can be vented to air initially.
▪ Slightly open the valve on the nitrogen gas source until a small amount of gas can be heard coming from the bleed valve (D)
▪ After approx. 20 seconds slowly close the bleed valve (D), allow pressure to increase
▪Slowly increase the pressure from the nitrogen gas source by opening its valve until the indicated pressure increases to the desired
setting. Wait until temperature and pressure are stable, and if needed increase the pressure again to the required setting. When the
pre-charge pressure (P0) is reached and stabilised, close the valve of the nitrogen gas source
▪ Close the gas valve tted to the accumulator by turning the tee handle on the charging chuck adaptor (2) fully anti-clockwise.
Open the bleed valve (D) to drain any residual pressure remaining in the charging chuck adaptor (2), charging valve (1) and the gas
hose (5).
Important: Do not over depress the gas valve tted to the accumulator as this may result in a damaged gas valve.
Important: Do not over tighten the charging chuck adaptor (2) when tting to the accumulator gas valve
Important: Do not attempt to remove the hose assembly from the ttings (B) or (E) whilst pressure is still monitored on the gauge (4)
Important: Do not attempt to remove the charging valve (1) by removing the test coupling (C) whilst pressure is still monitored on the
gauge (4)
Maintenance of the STA-CK Charging Valve (1)
It is recommended to check the various connections and adaptors at regular intervals for cleanliness, detection of possible defects, thread
wear and sealing parts.
Please contact your local STAUFF ofce for further information.
