12
➁
➂
➃
➀
4.6 Soundness test of valve train
❏
The valve train soundness test must be carried out with
the ball valve and solenoid valves closed.
Test pressure in valve train: _____________ min. 100 mbar
Waiting time for pressure equalisation: _______ 5 minutes
Test time: ________________________________ 5 minutes
Max. permissible pressure drop: _______________ 1 mbar
(gas train design pressure _____________ max. 500 mbar)
First test phase:
Ball valve up to first valve seat
1. Connect test assembly to test point
➊
.
2. Open test point
➋
.
Second test phase:
Between the valves and second valve seat
1. Connect test assembly to test point
➋
.
2. Open test point
➌
.
Third test phase:
Valve train connection parts and gas butterfly valve
1. Fit blanking plate
➀
.
(see notes Ch. 7.3)
2. Fit measuring device to test point
➌
.
3. Remove blanking plate
➀
once soundness test is
complete.
4. Tighten Torx screws on mixing head.
Note:
To carry out an external soundness test, brush
connection points with foam forming agents or
similar, non-corrosive material, or use an
electronic gas detector.
Soundness test
1
st
Test
phase
2
nd
Test
phase
3
rd
Test
phase
➀
Blanking plate
➁
Measuring device (U tube or manometer)
➂
Manual pump
➃
Hose clamp
Test points on W-MF 507
P
➊
➌
➋
➌
➋
➊
Test point
➊
: Pressure into filter (inlet)
Test point
➋
: Pressure between V1 and V2
Test point
➌
: Gas pressure setting
Test points on multifunction assembly
For the soundness test, the test points must be opened by
loosening the screw in the test nipple.
☞
Close all test points once the soundness test is
completed!
Documentation
☞
The results of the soundness test must be documented
in the service report.
Summary of Contents for WG10 1-C Series
Page 32: ...32 7 13 Replacing internal fuse W FM10 T6 3H250V ...
Page 38: ...38 Notes ...
Page 39: ...39 Notes ...