Truma DuoControl vertical Bedienungsanleitung

EN Operating instructions To be kept in the vehicle Page 02

DuoControl

DuoControl vertikal DuoControl horizontal

2EN

DuoControl

Table of Contents

Symbols used .................................................................................... 3

Intended use ................................................................................... 3

Safety instructions ........................................................................ 4

Operating instructions

Reset button ................................................................................... 7

Start-up ............................................................................................ 8

Changeover ..................................................................................... 8

Removal status ............................................................................... 9

Changing the gas cylinder ........................................................... 9

Hose change ................................................................................. 10

Using only one gas cylinder ...................................................... 11

Checking for leaks in the high-pressure section ................... 11

Checking for leaks in the low-pressure section .................... 11

Maintenance ................................................................................. 13

Accessories ................................................................................... 14

Technical data .............................................................................. 15

Manufacturer’s Warranty

(European Union) ......................................................................... 16

3EN

Symbols used

Symbol indicates possible hazards.

Note containing information and tips.

Intended use

– The DuoControl is a safety gas pressure regulator with automatic

changeover for connecting to two gas cylinders for caravans and mo-

tor homes. The gas pressure regulator ensures a uniform output pres-

sure of 30 mbar with a permissible inlet pressure range of 0.7 – 16bar.

The DuoControl gas pressure regulator is a single-stage gas pressure

regulator. If the gas pressure regulator is not working properly, for

example due to dirt or other foreign material on the valve, the safety

valve opens and blows off to a pressure of 110mbar.

Using the DuoControl in closed rooms (e.g. at home), on boats or in

EXZone 0 (e.g. tankers) is prohibited.

The national regulations must be observed if there is a possibility of it being

used in mobile homes. Its use in mobile homes is prohibited in Germany.

An automatic PRV* safety device integrated in the DuoControl with

limited flow protects the connected consumers against impermissibly

high pressure. As soon as an impermissibly high pressure arises on

the output side, the PRV opens and blows out the overpressure into

the air. The PRV closes automatically after the pressure is reduced

* = Pressure Relief Valve

4EN

DuoControl must not be used for commercial purposes.

Safety instructions

– The unit may only be installed and repaired by an expert. Experts

are persons who, based on their specialist instruction and train-

ing, their knowledge and experience with Truma products and the

relevant standards, can carry out the necessary work properly and

identify potential hazards.

– Do not connect any electrical appliances or other potential ignition

sources if you can smell gas or if there is a leak in the gas sys-

tem. Close the cylinder valves, have the gas system repaired by

an expert immediately and do not open the cylinder valves in the

meantime.

– The use of upright gas cylinders from which gas is extracted in the

gas phase is mandatory when operating the DuoControl gas pres-

sure regulator. 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.

– A gas filter must be installed upstream of the gas pressure regula-

tor inlet to provide reliable protection against dirt / oiling. A set of

operating and installation instructions is supplied with the gas filter.

– High-pressure hoses are mandatory for connecting the gas cyl-

inders to the gas pressure regulator or gas filter. For this, Truma

provides the necessary high-pressure hoses with the most com-

monly used connection variants for European gas cylinders (see

www.truma.com).

5EN

– In normal conditions of use, in order to ensure correct operation of

the installation it is recommended that this device is changed with-

in 10 years of the date of manufacture. National regulations must

be observed. The operator is responsible for this.

– Gas cylinders that are not connected to the gas installation must

be closed at all times and provided with protection caps. Connect-

ed gas cylinders are considered to be operating materials and not

hazardous materials (ADR exemption in accordance with sections

1.1.3.1 and 1.1.3.2 e).

The gas system must not be used while driving.

6EN

Operating instructions

Figure 1a: DuoControl vertical

Figure 1b: DuoControl horizontal

Figure 1c

7EN

1 = Cylinder valve

2 = Gas cylinder

3 = High-pressure hose

4 = Gas filter

5 = DuoControl

6 = Reset button

7 = Steel / copper tube

8 = Screw cap (test connection)

9 = Screw aid a/f 23 / KF

10 = Torx T20 (on the screw aid)

11 = Control knob for operating cylinder/reserve cylinder

12 = Status display – operating cylinder / reserve cylinder (green / red)

Reset button

DuoControl has a reset button, the position of which indicates its

status: “ready for operation” position (Figure2a) or “not ready for op-

eration” position (Figure2b).

Figure 2a Figure 2b

To reset, press the reset button (6) firmly and turn it anticlockwise as

far as it can go. Ensure that the reset button (6) remains in the posi-

tion “ready for operation” (Figure2a).

The Torx T20(10) from the screw aid(9) or a torx screwdriver

can be used to assist the turning movement.

8EN

Start-up

– Open the gas remote switch if present.

– Connect the gas cylinders (2) and make sure all hose connections

are in good condition.

– Open the valves on both gas cylinders (1).

– The status display (12) changes to green.

– If the reset button(6) is not pressed (“not ready for operation” posi-

tion), press the button (6).

Changeover

If the pressure in the operating cylinder drops to below 0.4bar,

DuoControl automatically switches over to take gas from the second

gas cylinder. The status display is red.

In extreme cold or when a large amount of gas is consumed

from the cylinder over a long period of time, the gas pressure

may fall below 0.4 bar even though there is still some gas left in the

operating cylinder. This may result in gas being taken from both gas

cylinders simultaneously.

If necessary, use the control knob (11) to manually select which gas

cylinder will be operating and which will be held in reserve.

Always turn the control knob (11) as far to the left or right as it will go

(an intermediate position will cause gas to be removed from both gas

9EN

cylinders simultaneously). We recommend that you do not operate

the cylinder if the control knob is in the intermediate position.

Removal status

In the normal position (operating cylinder on the left, reserve cylinder

on the right), the following display will be seen:

– Status display (12) is green = gas taken from the left cylinder (oper-

ating cylinder).

– Status display (12) is red = gas is taken from the right cylinder

(reserve cylinder); check the connection and fill level of the left

cylinder.

Changing the gas cylinder

Use the included screw aid (9) to attach and remove the high-pres-

sure hoses (3). It will help you generate the necessary tightening

torque and will prevent damage to the union that may otherwise re-

sult from using an improper tool.

Residual gas: No smoking, no naked flames!

– Close the valve (1) of the empty gas cylinder (2).

– Remove the high-pressure hose (3) from the gas cylinder (2) and

remove the clip-on adapter, if present.

– Attach the high-pressure hose (3) to the full gas cylinder and fit the

clip-on adapter, if present. Change the filter pad of the gas filter.

10 EN

– Open the full gas cylinder’s valve (1).

After any intervention, check the hose connection to the cylin-

der valve for leaks (see “Checking for leaks in the high-pressure

section”).

Hose change

Use the included screw aid (9) to attach and remove the high-pres-

sure hoses (3). It will help you generate the necessary tightening

torque and will prevent damage to the union that may otherwise re-

sult from using an improper tool.

Residual gas: No smoking, no naked flames!

– Close the gas cylinder valve (1).

– Unscrew the high-pressure hose (3) from the gas cylinder (2 / or the

clip-on adapter) and from the gas filter / DuoControl inlet.

When changing the hose, ensure that the seal provided with

the hose (hose outlet – gas filter / gas pressure regulator inlet)

is correctly installed and is not damaged.

We recommend that you replace the flat gasket G 13 (part no.

50020-76300) every time the hose is changed.

– Screw the country-specific high-pressure hose (3) to the gas filter(4) /

DuoControl inlet and to the cylinder (2 / or the clip-on adapter).

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