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IW4/IW7 WB/WBV Operations
D1 0412BA1-GB04 25
3.6 Imbalance Display (Optional)
! Imbalance display
The imbalance display will show the
difference between the right-hand and left-
hand brake force in percentage (%). The
imbalance display will be activated when a
pre-set total brake force is reached.
The brake force difference should not
exceed the legal permissable value.
! Testing in the large measuring range
If a vehicle is tested using the large measurement range (measurement range switch-over on
the remote control or on the test stand) it can happen that the necessary trigger value to
activate the imbalance display is not reached because the attained brake forces were not
high enough. In this case, there will be no imbalance display.
3.7 Special Features on Test Stands with MB Mode
Selection of the operating mode
Test stands with MB-Mode are equipped with an operational selector switch making it possible
to switch between:
• "Automatic" :
the rollers will start up automatically after the switch-on time delay.and
• "Manual" :
the rollers are started one after the other manually by using the remote
control. Observe the green lamp which indicates in which operational mode the test stand is.
The green lamp will extinguish if the pit safety system is triggered.
Switching on the unoccupied test stand
The "Automatic" operational mode is started by turning on the main switch while the test stand is
unoccupied. Use the selector switch to switch to "Manual" operation.
Switching on the occupied test stand
The "Manual" operational mode is started by turning on the main switch while the test stand is
occupied. The test stand can only be switched to "Automatic" operational mode when it is
unoccupied.
Acknowledging malfunctions
Test stands with MB-Mode are also equipped with a malfunction button. If problems occur during
operation, the malfunction lamp will light up. Certain problems can be acknowledged by pressing
the malfunction button. (see defect codes).
If the trouble occurs while the test stand is occupied, it immediately switches to "Manual"
operation.