Double door system and method with service check mode

A method for operating a double door system, the double door system comprising

• an understriking door leaf, an overstriking door leaf, a first door operator adapted to move the understriking door leaf between an open and a closed position, a second door operator adapted to move the overstriking door leaf between an open and a closed position, a mechanical brake arrangement and an electric coordination system,
• wherein the understriking door leaf is closed before the overstriking door leaf to close the double door,
• a second controlling member
• wherein the mechanical brake arrangement comprises
• a braking member arranged to brake the movement of the overstriking door leaf,
• a first controlling member which is mechanically operated, wherein the first controlling member is arranged to control the braking of the braking member in relation to the position of the understriking door leaf, and which is mechanically operated,
• wherein the second controlling member is arranged to control the braking of the braking member in relation to the position of the overstriking door leaf, wherein the second controlling member is arranged to put the braking member in a non-braking state when the overstriking door leaf is in a first opened state, which first opened state corresponds to a position of the overstriking door leaf having an angle (α) in relation to a closed position of the overstriking door leaf that is larger than the first predetermined angle (αm),
• wherein the second door operator comprises a second motor arranged to drive the overstriking door leaf between the opened and closed position of the overstriking door leaf,
• wherein the electric coordination system comprises an electric coordination controller operatively connected to the second motor, the electric coordination system being electrically operated,
• wherein the electric coordination controller is operatively connected to a first sensing element for monitoring an understriking door angle in relation to the closed position of the understriking door leaf and a second sensing element for monitoring an overstriking door angle in relation to the closed position of the overstriking door leaf,
• wherein the first door operator comprises a first motor arranged to drive the understriking door leaf between the opened and closed position of the understriking door leaf,
• wherein the electric coordination controller is operatively connected to the first motor to control the operation of said first motor
• the method comprising:
• controlling the second motor to brake the movement of the overstriking door leaf based on the position of the understriking door leaf;
• putting the braking member in a mechanical braking state by the first controlling member and the second controlling member when the understriking door leaf is in an opened condition and the overstriking door leaf is in a second opened state, which second opened state corresponds to a position of the overstriking door leaf having an angle (α) in relation to a closed position of the overstriking door leaf that is equal to or smaller than a first predetermined angle (αm)
• putting the braking member in a non-braking state by the first controlling member when the understriking door leaf is in a closed condition,
• switching to a service check mode of the electric coordination system and to in said service check mode:
• instructing the first motor and the second motor to drive the understriking door leaf to its opened condition and the overstriking door leaf to its first opened state, said first opened state corresponding to a position wherein the overstriking door leaf has an angle (α) in relation to a closed position of the overstriking door leaf that is larger than the first predetermined angle (αm), and
• in response to the understriking door leaf and the overstriking door leaf being in the opened condition and the first opened state, respectively, instructing the second motor to drive the second door operator to move the overstriking door leaf in a closing direction.