Hawle HAWIDO 1400, Руководство пользователя

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Check:
When the outlet gate valve is opened slightly the valve should close and remain shut. Then close the gate
valve again.
If the valve does not close, the commissioning procedure must be repeated from the preceding chapter
onwards. Special care must be taken here to ensure that the upper valve chamber and control lines are
properly vented.
4. Adjustments Sustainable Pressure
The valve is prepared according to the preceding chapter. The valve is open on the inlet side and closed on
the outlet side.
Proceed as follows:
•
Slowly open ball valve (2C). The valve then opens and fills the pipe work on the outlet side until a
pressure of 0.4 bar is reached. The valve then closes again.
•
Gradually and slowly open the gate valve on the outlet side.
•
Slowly turn the hand wheel of the control valve (6) counter-clockwise until the valve opens (audible
sound of water flow).
•
Check the inlet pressure on the pressure gauge.
•
Step by step tighten the hand wheel of the control valve (6) (½ turn) according the table below.
Note:
Pause between each half turn of the hand wheel until the hydraulic system has stabilised. Check the
pressure on the pressure gauge on the inlet side.
If the required relief or sustaining pressure has been set, tighten the screw on the hand wheel of the control
valve.
Spring Mark
Regulating
pressure
Pressure
change at 1
turn [bar]
Number of
spindel turns
for

p = 1bar
Standard None 2
– 16bar
0.6 1.6
Strong
Yellow
1118 000 000
14 - 22bar 0.8 1.2
Light
Blue
1118 000 001
0.8
– 4bar
0.2 5.6
5. Setting the reaction speed
If the HAWIDO does not operate quietly, or pressure surges occur in the supply network, this can be
corrected by adjustment one-way flow restrictor (5).
Procedure:
Loosen the locknut. Screw in the setting screw clockwise with a screwdriver until the valve operates quietly,
and then retighten the lock nut.
Attention:
The setting screw must always remain open by at least 3 - 5 turns; otherwise the valve will not reopen
sufficiently quickly after the closing sequence. A special setting may be required for very high inlet pressures.
6. Checking for leakages
HAWIDOs are tested for both leakage and functionality during manufacture. When checking for leakage
under operational conditions, particular attention must therefore be given to the seals of the flange
connections, the control lines and the central screw plug on the valve cover, and these must be further
tightened if necessary.