Operating Instructions; Taking Into Operation; Changeover; Removal Status - Truma DuoControl Mode D'emploi

Operating instructions

The use of upright gas cylinders from which gas is taken in the
gas phase is mandatory for the operation of gas regulators,
gas equipment and gas systems. Gas cylinders from which
gas is taken in the liquid phase (e.g. for fork lifts) must not be
used, since they would result in damage to the gas system.
Use the control knob (a) to manually select which cylinder will
be operating and which will be held in reserve.
c
The mica window (b) indicates the status of the operating
cylinder:
green = Gas from the operating cylinder
red = Gas from the reserve cylinder.
Truma offers a remote indicator as an accessory (part no.
50210-01) to permit reading of the operating cylinder's
status from inside the vehicle.

Taking into operation

– Open gas remote switch if present.
– For example, turn control knob (a) to the left until it stops
(left connection is operating cylinder).
12
b
c
a
– Connect gas cylinders and make sure all hose connections
are in good condition.
– Open the valves on both gas cylinders.
– If fitted, press SBS (c) on high pressure hose.
– The display in the mica window will turn green.

Changeover

As soon as the pressure in the operating cylinder falls below
0.6 bar, the DuoControl regulator automatically switches over
and begins taking gas from the second gas cylinder. The dis-
play in the mica window turns red.
In extreme cold or when a large amount of gas is con-
sumed from the cylinder over a long period of time, the
gas pressure may fall below 0.6 bar even though there is still
some gas left in the cylinder. This may result in gas being
taken from both gas cylinders simultaneously.
If needed, you can change the position of the control knob at
any time.
Always turn control knob (a) as far to the left or right as it will
go (an intermediate position will cause gas to be removed
from both gas cylinders simultaneously).

Removal status

In the normal position (operating cylinder on the left, reserve
cylinder on the right), the following display will be seen:
– Status display (b) is green = gas taken from the left cylinder
(operating cylinder).