3-Valve Manifold Assembly Procedure; Electrical Installation - Setra Systems 230 Installation Manual

Valve C should be open and Valves A and B closed whenever the system is first
being wetted or pressurized. Valves A and B should then be opened slowly to
avoid hammering. Valve C can then be closed and the system is operating.
When the differential pressure sensor is to be removed, Valve C must be opened
first, then Valves A and B can be closed.
2.8 Optional 3-Valve Manifold Procedure
V3
V1
The 3-Valve Manifold Assembly is normally shipped with valves V1 and V2
closed and V3 open.
To place the DPT230 into service:
1. Confirm valves V1 and V2 are closed and valve V3 is open.
2. Mount the manifold and install process connections.
3. Slowly open V2, then V1.
4. Slowly open bleed screws on the Model DPT230
(see "Bleeding the Pressure Ports" section above) to bleed the lines of air.
5. Close the bleed screws on the Model DPT230.
6. Close V3.
To place the DPT230 out of service:
1. Open V3 to equalize the pressure at the Model DPT230.
2. Close the V1 and V2.
3. Open the bleed screws on the Model DPT230.
3.0 ELECTRICAL CONNECTIONS
To access electrical connections remove cover on top of Model 230.
Diagram 1
3
Manifold Block
Valves (3)
Valve type
V2
Process Connections
For voltage output, use COM, OUT and
EXC terminals.
For current (4-20 mA) output, use +
and - terminals.
3-Valve Manifold Description
Brass
V1 for connection to +port
V2 for connection to -port
V3 for equalizing pressure
90 Degree On/Off
1/4" -18 NPT Internal Thread