GOK NDR 0515 Montage- Und Bedienungsanleitung Seite 22

Fault cause
No gas flow
OPSO cannot be unlocked
Restarting the safety overpressure shut-off valve OPSO with visual indicator
If the safety overpressure shut-off valve OPSO has responded, which is shown in RED on
the visual indicator - take the following steps.
1. Close the gas withdrawal valve.
2. Vent the pressure regulator  loosen the screw connection on the outlet side
3. Ventilate the inlet pressure  Loosen the connection on the inlet side
4. Tighten all connections again.
5. After elimination of defects, open the gas cylinder valve or the shut-off fittings.
6. Unscrew the protective cap
7. Turn the protective cap
until the spindle
8. Screw the protective cap
9. OPSO is ready to operate  and the display is GREEN.
10. Check for leaks.
10 / 12
Low pressure regulator Type NDR 0515 and Type NDR 0516
Action
Gas feed is closed:
 open the gas cylinder valve or the shut-off fittings
Safety overpressure shut-off valve (OPSO / UPSO) is closed:
 carry out the steps described in "Restarting the safety
overpressure shut-off valve (OPSO / UPSO)"
Filter sieve in the input connection is dirty:
 send the pressure regulator to the manufacturer to be
checked
The thermal cut-out device has responded.
 Replace the pressure regulator.
Regulator membrane is damaged:
 Pressure regulator is defective, replace.
by hand.
around and pull out the spindle
clicks into place and remains open.
on again by hand.
.
with the release device
.