-6-
•
Gradually turn the adjusting lever of the control valve (6) (½ turn) according to the table below.
•
1403.
Remove power from solenoid valve (9) (
➔
solenoid valve closes), the base valve close and
remains closed.
•
Valve 1404:
Apply power to the solenoid valve (9) (
➔
solenoid valve closes), the base valve close
and remains closed.
Note:
Wait for the hydraulic system to stabilise between each half turn of the hand wheel. If the required relief
pressure has been set, tighten the screw on the hand wheel of the control valve (6).
6. Setting the reaction speed
If the HAWIDO does not operate quietly, or if pressure shocks occur in the supply network, this can be
corrected by the corresponding adjustment of the one-way flow restrictor (5).
Procedure:
Loosen the locknut. Screw in the set screw clockwise with a screwdriver until the valve operates quietly.
Then retighten the locknut.
Caution
The setting screw must always remain at least 3 - 5 turns open, otherwise the valve can no longer close or
does not open after the closing sequence. A special setting is necessary for very high inlet pressures.
7. Checking for leakage
The HAWIDO's are tested at the factory for both leakage and function before delivery. When checking for
leakage under operational conditions, particular attention must therefore be given to the seals of the flange
connections, the control line and the central plug screw on the valve cover. Where necessary, ensure the
seal by retightening the connections.
Notes:
Spring
type
Article
number
Marking
Regulati
ng
pressur
e
Pressure
change
for 1 turn
[bar]
Number of
spindle
turns for
Δp = 1bar
Standard
1145 200 000
NONE
1.5
–
12bar
0.4
2.5
Strong
1145 200 002
yellow
1118 000 000
10
–
22bar
0.9
1.1
Weak
1145 000 001
blue
1118 000 001
0.2
–
5bar
0.08
12.6
