Hawle HAWIDO 1405, Руководство пользователя

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3. Venting
Proceed as follows:
Slowly open the inlet gate valve until water flows into the valve. The valve fills with water and the air escapes
via the vent holes. When the valve venting procedure has caused all the air to be expelled from the control
lines, retighten the headless screws. Check that all fittings are sealing properly and tighten if necessary.
Open the inlet valve slowly and completely.
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 adjusting lever 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 adjusting lever 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, tip over the adjusting lever for fixing.
Spring Mark
Regulating
pressure
Pressure
change at 1
turn [bar]
Number of
spindel turns
for

p = 1bar
Standard None 1.5 - 12bar 0.4 2.5
Strong
Yellow
10 - 22bar 0.9 1.1
Light
Blue
0.08
– 5bar
0.08 12.6