ITT
Engineered Valves, LLC
Page 5 of 22
Technical Manual No. IOT1000P Effective 8/31/2018
REV LEVEL B
II. OPERATION
Refer to Purchase Order Specification or solenoid valve assembly nameplate to determine
proper line voltage. Operation is in accordance with reference drawings.
Check specific order options and wiring diagrams (60-008 for AC voltage or 60-009 for
DC voltage) for electrical terminals supplied inside the junction box.
A.
Closed: Oil Flow Off, Purge and Atomizing Media Flow Off
In this position the atomizing valve plug is held against the atomizing seat by the
actuator return spring, blocking flow of the atomizing media. The oil valve plug is
held in the oil seat by the oil valve return spring, blocking oil flow. The oil valve
proof of closure (POC) switch is made. The valve closed limit switch is actuated
and the valve open limit switch is deactuated.
Model T1005: Energizing both the fire and purge exhaust solenoids coils moves
the system to the closed position.
Model T1006 & T1007:
De-energizing both the fire and purge solenoids
moves the system to the closed position.
Model T1008: Energizing the fire exhaust solenoid coil, and de-energizing the
purge solenoid moves the system to the closed position.
B.
Fire: Atomizing Media and Oil Flowing, Purge Off
Pressurizing the Actuator’s Fire cylinder causes the atomizing stem to move
downward towards the oil stem. As the atomizing stem contacts the oil stem, it
forces the oil plug out of its seat ring initiating oil flow while simultaneously
seating in the purge seat. Prior to any oil flowing, the oil valve POC switch
changes contact states. The valve open and close limit switches change states
from the valve closed position (Valve open actuated & valve closed deactuated).
Model T1005, T1008: Energizing the fire solenoid coil moves the system to the
Fire position.
Model T1006, T1007: Energizing the fire solenoid causes the valve to go to the
Fire position.
