The indicator on the test pressure gauge decreases to a lower val‐
ue. This value indicates the back-pressure. Repeat the pressure
decrease process at least six times. The highest value reached in
this process is considered to be valid.
8.6.7.2 Inspecting the auger pump with clamping sheath
Figure 39: Different models available
Item Designation
1 Clamping sheath
2 Hexagon spanner
3 Pressure gauge
4 Pressure connection
5 Test pressure gauge
6 Shut-off valve
1. Connect a delivery line that is at least 5 m long to the pressure
connection.
2. Connect the test pressure gauge to the end of the delivery line.
3. Switch the machine on.
4. Slowly close the shut-off valve on the test pressure gauge.
⇒
The pressure increases.
Maintenance
8 — 22
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