6
STA-CK-305
Operating Instructions available online
Only use “gas approved" test hose
For use with nitrogen (N
2
) 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 (Topping up the Pre-charge Pressure)
Charging Valve Connected Directly to Regulator
Typical Installation
Remove the accumulator gas valve protection cap and gas valve screw cap fitted to the gas side of the accumulator.
Refer to page 4 for connection flow chart
▪
Ensure regulator used is fitted with STAUFF SKK-20 fitting
▪
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) fitted to the regulator
▪
Connect gauge + adaptor (4) to charging valve (A)
▪
Ensure that the bleed valve (D) on the charging Valve (1) is fully closed.
▪
Connect one end of the gas hose to the SKK test coupling (E) and 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 fitted to the accumulator, slowly turn the tee handle on the charging chuck adaptor (2) clockwise until pressure
is read on the gauge (4).
▪
Slowly open the valve on the nitrogen gas source and allow pressure to increase to the desired pre-charge setting. Wait until the
temperature and pressure are stable, and if needed increase the pressure again to the required setting.
▪
When the pre-charge pressure (P0) is reach and has stabilised, close the valve of the nitrogen gas source.
▪
Close the gas valve fitted 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 fitted to the accumulator as this may result in a damaged gas valve.
Important:
Do not over tighten the charging chuck adaptor (2) when fitting to the accumulator gas valve
Important:
Do not attempt to remove the hose assembly from the fittings (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)
