5. If the shut-off valve is closed and the pressure has reached its
peak, read the pressure on the test pressure gauge and switch
the machine off.
⇒
The pressure decreases.
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.
6. If the required test pressure if not reached, increase the tension
on the clamping sheath.
Retensioning the clamping sheath
Figure 40: Different models available
Item Designation
1 Clamping sheath
2 Clamping bolt
1. By tightening the clamping bolts evenly, you increase the preten‐
sioning.
⇒
The pressure increases.
Maintenance
8 — 23
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