Goetze 9000 Manual De Instrucciones página 14

4
Maintenance
According to DIN EN 806-5, inspection and maintenance must be carried out at
least once per year to rectify any malfunctions that can be caused by contamination,
corrosion, calcification and natural wear. This interval may be shorter, depending on
the conditions of use.
During this maintenance/inspection procedure, the screen must be cleaned, the
valve insert checked for fault-free condition and must be replaced if required. Then
check the back pressure is correct at zero flow and peak flow.
The function of the valve must be checked following prolonged shutdowns.
Attention!!!
During assembly work on the pressure reducer, the corresponding system part
must be depressurised and drained, depending on the medium.
5
Remove the valve insert
1. Shut off the water supply and relieve the valve of pressure.
2. Loosen the fixing screw , by 1/4 screw turn, on the adjustment knob (do not
remove!) by turning anticlockwise.
3. Turn the adjustment knob anticlockwise until the spring is completely relieved.
Failure to observe this instruction can cause injury!
4. Loosen the hood using a spanner and remove the assembly (Fig. b).
5. Remove the spring set, slip ring, valve insert.
6. Clean/replace the valve insert as required.
7. For assembly, proceed in the reverse sequence.
8. Set the desired setpoint as described in Chapter 3.
6
Remove the screen
1. Shut off the water supply and relieve the valve of pressure.
2. Loosen the filter screen cup by hand/with a spanner by turning anticlockwise,
and remove (Fig. c). Make sure that the filter screen cup is not damaged. If it is
damaged, be sure to replace it with a new part.
3. Remove the screen.
4. Clean/replace the screen and grooved ring as required.
5. Assemble in the reverse sequence.
6. Make sure that the grooved ring and and the O-ring are in the correct position.
7. Tighten the filter screen cup flush by hand (max. 5 Nm).
Assembly and maintenance instructions - 9000 / 9040 www.goetze-armaturen.de