Hold-open arrester arrangement having a hold-open function to hold a door open

A hold-open arrester arrangement for a door closer with an arm and slide rail the arrangement comprising a sliding block and an arrester unit, the sliding block being connectable with the slide rail in a sliding manner and also pivotable connectable to the arm, the arrester unit being connectable to the slide rail and having a body, the electric release arrangement, and said hold-open function with the sliding block,

• the sliding block comprising a push surface, and a hook, and the arrester unit having a front end being arranged to receive the hook, and a slide element being spring-biased towards an arresting position of the slide element at the front end 6D of the arresting unit 6, the arresting unit further comprising a circled detent, the slide element at the arresting position being arranged to keep the circled detent at a holding location,
• the arrester unit having also a lever being pivotable attached to the slide element, the lever having an arm with a free end and a projection, the lever being spring-biased so that the free end is arranged to contact the push surface when arrester unit is receiving the hook, and when receiving the hook the slide element is arranged to move towards a rear end of the arrester unit by a pushing force from the sliding block via the lever until the projection is turned due to a stop surface of the body, said moving of the slide element towards the rear end releasing the circled detent from the holding location allowing the hook move further towards the rear end,
• when said lever turning due to the stop surface the arm is arranged to turn out of the way of the push surface, whereby the hook can further move towards the rear end of the arrester unit, and the slide element moves to the arresting position guiding the circled detent to the holding location, whereby the sliding block is kept in connection with the arrester unit providing said hold-open function,
• the electric release arrangement being arranged to move the slide element towards the rear end in case of fire alarm whereby releasing said the circled detent from the holding location allowing the sliding block to move away from the arrester unit,
• the front end of the arrester unit further comprising a pivotable part having a basic position being kept by a holding spring via a connection arm, the pivotable part at the basic position being arranged to keep the circled detent at the holding location, and the holding spring, the connection arm and the pivotable part being arranged to release the circled detent from the holding location thereby allowing the movement of the sliding block away from the arrester unit in case a pulling force from the sliding block is greater than a threshold force value, which is depending on the holding spring.