Instruction manual

124 T-Modell - 13/14 - Ausgabe 08/13 - 2354677 - BUE-0029-14EN
Gas system
7
Only the electrical functions can be switched at the operating unit (Fig. 161).
The regulator taps on the gas bottles (Fig. 160,7) and the release buttons
(Fig. 160,6) must be opened manually.
The reversing valve provides a constant gas pressure, regardless of which gas
bottle is being drawn upon. The display in the reversing valve shows the filling
level of the primary bottle. The gas supply comes from the primary bottle when
the display is green. When the display is red the primary bottle is empty. In this
case, the reserve bottle is used for the gas supply.
Without remote display The indicator lamp on the operating unit shows the condition of the gas
system. The system is okay when the indicator lamp (Fig. 161,1) lights up
green. When the indicator lamp lights up or flashes red a fault has occurred.
The gas supply is interrupted.
With remote display The indicator lamp on the operating unit (Fig. 162,1) shows the condition of the
gas system:
Putting into operation:
 Open the regulator taps of the gas bottles (Fig. 160,7).
 Press the release buttons (Fig. 160,6) successively for 10 seconds.
 Use the knob (Fig. 160,3) on the reversing valve (Fig. 160,4) to select the
gas bottle which is to be the primary source of gas (primary bottle).
Always turn the knob as far as it will go.
 Switch on the switching facility on the operating unit.
For this, set the rocker switch (Fig. 161,2 or Fig. 162,2) to "ON". The
reversing valve is now deaerated. The indicator lamp (Fig. 161,1 or
Fig. 162,1) flashes yellow (system test) and lights up green.
Fig. 161 Operating unit Fig. 162 Operating unit with remote dis-
play
Indicator lamp Signification
Off System switched off, gas supply switched off
Green System switched on, gas supply switched on
Red Gas supply switched off, triggered by sloping position or
excessive acceleration, e.g. in the event of an accident
Yellow System switched on; gas supply switched on, primary bot-
tle empty
Flashes yellow Self-check, approx. 2 seconds long, after switching on
Flashes red once Valve not connected to control device or internal error
Flashes red twice Overvoltage determined, gas supply interrupted
Flashes red three
times
Undervoltage determined, gas supply interrupted