LINK Systems Omni II Automatic Setups Module - Manual (Page 76)

October 16, 2008 Manual Version 1.1
C-2
Section C.3 Valve Type “B” Lockout Procedure
The type “B” valve has a manual regulator in parallel with the automatic section that prevents the
pressure it is controlling from going below a minimum. To lock this valve out:
1) Set the pressure setpoint for the air system to 0 psi. At this point the manual regulator
will try to fill the system while the automatic section tries to dump.
2) Use the LOX valve (integrated into this type of valve) to dump the system and lock
out the manual section.
Section C.4 Valve Type “C” Lockout Procedure
When power is removed from the control or if the air system is turned OFF in the configuration
menu, a type “C” valve will revert to the manual section and the pressure will be no lower than
the regulator but may be higher because of the check valve.
To lock out a type “C” valve:
1) The air setpoint for the system to be locked out should be set to 0 psi OR the system must
be turned OFF in the configuration menu.
2) Use the LOX valve (integrated into this type of valve) to dump the system even if the
pressure setpoint is set to 0 psi at the control. This is necessary because if the control is
powered down intentionally or unintentionally the valve will revert to the manual
regulator setting and may attempt to fill the air system again.
If the LOX valve is opened when the system is still turned on and the pressure setpoint is not 0
psi, the system will think it has a leak and will attempt to fill so it is important to turn the system
OFF in the configuration menu or set the pressure setpoint to 0 psi before the LOX valve is
opened.
Note! Step 1 Must be done even if a LOX valve is opened in step 2
since the control may try to pressurize to system using the
Fill/Dump valve if the power is on!
Note! Step 1 Must be done even if a LOX valve is opened in step 2 since
the control may try to pressurize to system using the Fill/Dump
valve if the power is on!