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16
Checking for leaks in the high-pressure
section
The screw joints of the high‑pressure hoses at the gas cyl
inder valve and on the DuoControl CS must be checked for
leaks using suitable means such as a leak‑finder spray in
accordance with EN 14291.
The operator is responsible for this.
Checking for leaks in the low pressure
section
(maximum test pressure 150 mbar)
The test must be conducted by a technician!
Turn off all consumers.
Open stop valves and, if present, the gas remote switch.
Remove the threaded cap from the test connection (e) and
connect the test pump with test hose to the test connection.
Remove the protection cap from the test valve (f) and turn
the valve 90° clockwise with an open‑ended spanner (span‑
ner width 6 mm).
f
e
Figure 2
When changing the hose, ensure that the seal provided
with the hose (hose outlet – regulator inlet) is correctly
installed and not damaged.
We recommend that the seal (part no. 50020‑76300) be
replaced every time the hose is changed.
Screw the country‑specific high‑pressure hose to the
DuoControl CS inlet and to the cylinder (or the slip‑on
adapter).
Open the gas cylinder valve.
Firmly press the hose rupture protection (d – green button)
and, if necessary, the green reset button (c) for about 5 sec‑
onds in each case.
Check the hose connection on the cylinder valve and on the
DuoControl CS inlet for leaks after every intervention (see
“Checking for leaks in the high‑pressure section”).
Using only one gas cylinder
You can also use DuoControl CS with only one gas cylinder.
Non‑return valves integrated into the inlet connection prevent
gas from escaping through the unused connection.
The free inlet must be sealed off using the provided cover
(brass) if only one cylinder is being used.
Turn the control knob (a) towards the operating cylinder.
16


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