Setra System Model 230 - Manual (Page 5)

5
2.8 optional 3-Valve manifold Procedure
the 3-Valve manifold assembly is normally shipped with valves V1 and V2 closed and V3 open.
To place the Model 230 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 230
(See “Bleeding the Pressure Ports”, section 2.7, to bleed the lines of air.)
5. Close the bleed screws on the Model 230
6. Close V3.
To take the 230 out of service:
1. Open V3 to equalize the pressure at the Model 230.
2. Close the V1 and V2.
3. Open the bleed screws on the Model 230.
3-Valve Manifold Description
Manifold Block
Brass
Valves (3) V1 for connection to ±port
V2 for connection to -port
V3 for equalizing pressure
Valve Type
90 Degree On/Off
Process Connection 1/4 ”-18 NPT Internal
Thread
Model 230 Differential
Pressure Transducer
SHUNT VALVE
SHUT OFF
VALVE
V1
V2 V2
High Process Connection
1/4” NPT
Low Process Connection
1/4” NPT