Commissioning; Functional Diagram (1401); Preparatory Work - Hawido 1401 Instruction

B. Commissioning
1.

Functional diagram (1401)

3 9A 4
5A
7
2B
2A
p
1
2.

Preparatory work

Before commissioning the valve, check that the gate valves on the inlet and outlet sides of the valve are
closed and that the flange connections have been correctly tightened and sealed.
On the valve:
•
Open ball valves (2A and 2B) and loosen the set screw lock nut on the one-way flow restrictor (5)
•
Unscrew the adjusting screw on the one-way flow restrictor (5) by approximately 10 turns. (The line
to the control chamber is open).
•
Close the ball valve (2C)
•
Loosen the threaded pin in the central plug on the position indicator by a few turns.
•
Loosen the threaded pin in the venting elbow by a few turns.
Threaded screw in the venting elbow
Vent hole
•
Lower the adjusting lever on the pressure retention control valve (6) and turn the lever to the right
until a very high resistance is felt from the spring.
-4-
6
5B
9B
8
1
L
Components
1 Main valve 1200
2 Ball valve (A, B, C)
3 Filter
4 Orifice plate
5 One-way flow restrictor (A, B)
6 Control valve
7 Pressure gauge
2C
8 Position indicator Electrical position
indicator (optional) Valve opening
limiter (optional)
9 Check valve (A, B)
p
2