Instruction Manual
Voith Turbo
I/H Converter DSG-BXX112
I/H Converter DSG-BXX102
09 / 03 cet - Ochs/ZAN1
Voith Turbo GmbH & Co, KG
Page: 17 / 21
3.626 - 018877 en
D – 74564 Crailsheim
7.3
Trouble shooting and remedial action
Prior to all works, make sure that the I/H converter was commissioned
according to chapters 5 and 6.
Malfunction: Pressure
variations
The output signal pressure P
A
may vary now and then or
periodically with low or high frequency and amplitude.
Cause: 1. air inclusions in the hydraulic component
2. low or considerably varying input pressure.
3. dirt particles in the hydraulic component
4. pressure on return line
Remedy: 1. On first commissioning or after longer periods of
stand still air inclusions in the hydraulic component may
cause pressure variations. Positive opening operation
grants sufficient hydraulic damping due to the damping
piston within seconds.
2. Under load and in particular in case of higher output
signal pressure, a lower input pressure may lead to
pressure variations.
Increase and / or stabilize the input pressure by taking
appropriate measures (e.g. accumulator). See also chapter
1.
3. Contaminated pressure fluid results in increased friction at
the control piston, thus causing hysteresis and pressure
variations.
Open hydraulic component and clean the inner elements. In
case of damaged surfaces and guiding edges replace the
I/H converter.
4. The dimensions of the return line have to be sufficient.
In case of additional consumers of the output pressure
connected to this line, make sure they do not create any
pressure in the return line. See also chapter 5.2.
