English
lead to leakage and uncontrolled release of gas.!
5.5 Own gas purging
notiCe! Units with a built in purging mechanism make it possible to dry the fittings or remove ambient
air which have entered the unit before starting operation or when exchanging the cylinder.
1. Close purge outlet valve (9) as well as process gas inlet valve (11) and process gas outlet valve (6) if
applicable (valve handle is at a right angle to the tube).
2. Close regulator (3) by turning the handwheel anti-clockwise.
3. Slowly open the cylinder valve (1).
4. Let process gas flow into the pigtail/hose (2) and leave it there for several seconds. Then close the
cylinder valve LINDEin (1).
5. Briefly open the purge outlet valve (9) and let the gas in the pigtail/hose slowly escape. Then close the
purge outlet valve (9) immediately.
6. Repeat steps 3 – 5 seven to ten times.
Own gas purging a 208
Close all valves. Slowly open/close the cylinder valve on the right. Open/close the purge valve on the
right. Repeat this purging cycle 7 – 10 times. Open/close the cylinder valve on the left. Open/close the
purge valve on the left. Repeat this purging cycle 7 – 10 times. When first starting operation of the
whole unit, purge via process gas outlet !!!
5.6 separate gas purging a 209
notiCe! Units with a built in purging mechanism with a separate inlet for inert gas make it possible
to dry gas areas or remove ambient air which have entered the unit before starting operation or when
exchanging the cylinder and make it possible to clean gas areas of toxic, corrosive or self-igniting gases
before exchanging the cylinder or before shutting down.
notiCe! Dry, clean purge gas N
1. Check that the purge gas inlet (12), the purge gas outlet (10), the process gas outlet (7) and the
connecting pigtail/hose (2) have been properly connected.
2. Process gas outlet valve (6), process gas inlet valve (11) as well as purge gas inlet valve (14) and purge
gas outlet valve (9) must be closed ( arrow on lever of the valves is at a right angle to the tube).
3. Close the regulator (3) by turning the hand-wheel anti-clockwise.
4. Open the purge gas inlet valve (14).
5. Open the process gas inlet valve (11).
6. Partially open the regulator (3) by turning the hand-wheel approx. two full circles clockwise.
7. Close the purge gas inlet valve (14). Leave the purge gas which has now flowed into the unit in there
for several seconds.
8. Briefly open the purge gas outlet valve (9) and let the purge out gas escape via the purge gas outlet
(10). Immediately close the purge gas outlet valve (9) again.
9. Repeat steps 4, 7 and 8 seven to ten times.
10. Close all valves on the panel. Completely close the regulator (3) by turning the hand-wheel anti-
clockwise.
5.7 starting Operation
Danger! When using toxic, corrosive or self-igniting gases only designate panels with a separate gas
purging mechanism.
Danger! Before starting operation, use the nameplate to check whether the equipment to be used is
suitable for the planned application purpose (type of gas, pressure, material, etc.)
Warning! Before turning on the pressure devices ensure that no-one will be endangered by starting
operation of the pressure devices.
Before starting operation and pressurizing the gas supply system, if necessary carry out own gas purging
(see appropriate section) or separate gas purging (see appropriate section) with subsequent additional
own gas purging (see appropriate sections).
1. Check that purging and vent gas lines and the pigtail/hose are connected correctly and securely.
2. Close all valves on the panel (arrow on lever at right angles to the tube).
3. Turning the hand-wheel of the regulator (3) anti-clockwise until the end stop. – the gas flow is thus
stopped.
4. Slowly open the cylinder valve (1).
5. Open the process gas inlet valve (11) (if applicable).
6. Set the desired outlet pressure by turning the hand-wheel on the pressure regulator (3) clockwise.
6
5.0 or Ar 5.0 is a prerequisite for successful purging.
2