Download PPC4 Operations and Maintenance Manaul

4. OPERATION
4.7.12.5 TEST (-) Vent
 PURPOSE
For models PPC4EX 100K and PPC4E 15K, causes the BGxxx RPT TEST (-) Vent
valve to stay open or closed rather than open and close automatically (see Section
3.2.25.6).
Note
This menu selection is available only when the active RPT is a
BG15K RPT (PPC4E 15K or PPC4EX 200K Lo RPT).
 OPERATION
[Settings], <More >>>, <Internal>, TEST (-) Vent accesses the TEST (-) Vent
screen. Selections are Operation and Status.
Operation:
Auto or Manual
Status:
Open or Closed
Automatic Operation is the default. Manual Operation allows the selection of always
Open or always Closed. Status entry is only available if Manual operation is
selected.
[Settings], <More >>>, <Internal> to view the settings of the TEST (-) Vent Valve
[OK] to accept and return to the Main Run Screen, [Back] to return to <Internal>
without making changes, [Esc] or  to exit to the Main Run Screen without
making changes.
 Caution
If the PPC4E detects a condition in which it determines there could
be a risk of overpressure to the RPT by opening the TEST (-) Vent
valve when a Manual Open is requested, a message indicating a
DP overpressure risk is displayed. If this message is displayed,
return to normal operation, vent the PPC4E and try again.
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