Honeywell HON 5020 Assembly page 23

Test configuration
Checking the system for
leaks
HON 5020 gas pressure regulator
The test setup is as follows (schematic diagram, using the imperial system HON 640a as an
example):
The numbers have the following meaning:
No. Meaning
Inlet area
1
Outlet area
2
Inlet stop valve armature
3
Gas pressure regulator
4
Outlet stop valve armature
5
Proceed as follows:
Step Description
1 Slowly close the outlet stop valve armature.
2 Apply the test medium to all detachable pipe joints.
3 Observe the test medium on all detachable pipe joints for several minutes.
If ...
no foam or bubbles are formed
foam or bubbles are formed
Step Description
4 Slowly close the inlet stop valve armature.
5 Depressurize the inlet area and the outlet area.
6 Seal the leaking pipe joints.
7 Repeat the leak test starting with step 1.
Transport and installation
then ...
 the system is leak-proof.
 the system may be put into operation.
 the affected pipe joint is leaking.
 the system may not be put into operation.
 Proceed with step 4.
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