- Check the sealing air on the synchronizing device
Orientation
To protect the housing of the synchronizing device against ingress of liquids or dirt,
compressed air (0.6 bar) is pressed into the housing. This so-called sealing air must
regularly be checked for its function. If sealing air is applied to the synchronizing
device housing, a low hiss is noticeable.
Missing or defective sealing air supply lines can cause damage to the
synchronizing device or to the machine.
Screws on the pneumatic system, the connected components, and
the supply lines must be tightened to the manufacturer's specified
torques.
Requirement
Checking the sealing air requires that the sealing air supply unit was checked
beforehand. Similar to the pneumatic supply unit, the sealing air supply unit
comprises a pressure regulating valve with high-precision pressure gauge, a micro
filter (0.01 µm), and a pressure regulating valve with pressure sensor
Procedure
1. Check all fluid lines of the sealing air supply for damage. A reliable method is
the use of a suitable pressure gauge. The pressure gauge is attached to the
line that is screwed off to monitor the existing pressure. The pressure should be
in the range of the preset pressure of the sealing air supply. If this is not the
case, the cause must be determined and the fault must be fixed.
Alternatively, the following procedure can be used!
Disconnect the fluid line in the area of the components and cover the opening
of the fluid line with your finger. A slight counter pressure should be felt. Then
connect the fluid line again.
Maintenance Summary - 4.000 Operating hours
77
Maintenance Instructions
ABC.2
DIE244EN - 15.08.2022
