21
6. Once a stable vacuum level is reached (4.5–7" Hg on the vacuum gauge in-line with the vacuum
pump), record the level. Use the table to the right to determine the required wait time. The
containment vacuum level should remain stable throughout the entire wait time; the vacuum pump
may be shut off at this point.
If the vacuum level drops more than 1" Hg during the required wait time, then the containment failed
the test. All leaks must be identified and repaired first, then the Containment Tightness Test should
be repeated until it successfully completes.
Containment Volume (Gal)
Wait Time
0.25–5
15 min
5–50
30 min
50–100
60 min
100–250
2 hr
250–500
4 hr
7. If a vacuum gauge has been installed at the end of the system, compare the gauge reading with the
console. If the measurements are not within ±2" Hg, a blockage may exist within the containment
and/or between the TS-SCM and vacuum gauge. All blockages must be identified and corrected.
Once the blockage is corrected, restart the Containment Tightness Test.
8. Uninstall the vacuum pump, regulator, isolation / shut-off valve and vacuum gauges at this time.
Continue on to the STP Vacuum Test in the next section. Do not replace the Leak Generator Port
Plug.
STP SIPHON FLOW RATE TEST
WARNING
: Failure to open the leak generator (TS-SCMCAL) during this test can apply an excessive
vacuum level to the containment, causing irreversible damage. Ensure that the leak generator is installed
properly and that the toggle switch is in the Open position prior to energizing the STP.
NOTE
: If during this procedure the containment reaches 9" Hg, which will cause the console to display
a High Vacuum alarm and disable the containment. High Vacuum will shut down the STP even if Pump
Shutdown on Alarm is not chosen in the options. A disabled containment will not allow the STP to be
activated. Navigate to the TS-SCM Control screen, press Reset Alarm to continue.
1. Install a vacuum gauge and the vacuum leak generating device (TS-SCMCAL) into the leak
generator (LG) port on the TS-SCM using necessary fittings. Switch the toggle valve to the
DOWN
(open) position.
2. At the console, navigate to the TS-SCM Control Menu. Press the Solenoid button activate (open)
the solenoid.
3. Activate the STP by lifting the appropriate dispenser handle.
4. With the STP on and toggle valve open, the vacuum level must be able to reach at least 6.5" Hg.
Verify vacuum levels at the gauge connected to the containment area.
Large Containments (>50 gal.) may take several minutes. For large containments, close the leak
generator until the vacuum level reaches approximately 6" Hg. Open the leak generator. Allow the
vacuum to build. The vacuum level must be able to reach at least 6.5" Hg, but, if the vacuum is not
able to reach at least 6.5" Hg, then the STP siphon assembly must be repaired or replaced.
5. Once the vacuum level is verified above 6.5" Hg, return the hook signal to turn off the STP.
6. At the console (LCD or TSA), navigate to the TS-SCM Control Menu. Press the Solenoid button to
deactivate (close) the solenoid.
7. Allow the vacuum to decay to 0" Hg.
NOTE
: If you are going to do to the Learn Process next, you can leave the TS-SCMCAL installed.
Содержание TS-SCM
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