STA-CK-SKK
5
Operating Instructions available online
General
1. Recommendation: Before proceeding to any operation concerning the initial pressurisation of an accumulator, consult the applicable
operating instructions.
2. Pressurisation limits: Ensure that the SKK Charging Kit and any associated pressure gauge fitted are rated for the intended pressure
for both pre-charging and pressure checking. Refer to the manufacturers specifications.
The nitrogen gas pressure varies as a function of the gas temperature. After each inflation and deflation of nitrogen gas, wait for
the temperature to stabilise before checking the pressure (this may take several minutes depending on the accumulator size).
Never exceed the maximum stated design pressure (PS or DP) of the accumulator as stamped on the vessel. If in doubt consult the
manufacturer or check manufacturer’s operating instructions or specification manual.
3. Taking into account the temperature influence on the pre-charge pressure: In order to observe the working pressures of the
accumulator it is advised to adjust the inflation pressure (P0) according to the operating or control temperature.
Bladder Accumulators
Refer to page 4 for connection flow chart
▪
Remove the protection cap on the SKK gas valve coupling (F) fitted to the gas side of the accumulator
▪
Select the safety pattern pressure gauge and adaptor (3) and couple directly to the SKK gas valve coupling (F) on the STAUFF
accumulator – pressure should now be indicated on the gauge
▪
To remove, uncouple the gauge from the STAUFF accumulator
Pre-charging Accumulators Instruction
General
Note:
The following information applies to pre-charging new accumulators or after a bladder change when no gas pressure is present
inside the accumulator.
Prior to pre-charging an accumulator it is important that the inside of the accumulator shell be lubricated. New STAUFF accumulators are
already lubricated internally during the manufacture / assembly process. For older units or accumulators that have been repaired and a new
bladder installed, STAUFF recommend that the accumulator be lubricated with enough system fluid to evenly coat the inside of the shell.
To ensure good lubrication lay the accumulator horizontally and rotate on its axis.
The pre-charge setting is recommended to be set to 80% - 90% of the minimum system working pressure if no specific pressure has been
calculated.
Checking the Pre-charge Pressure
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
