17
hivolt.de
GmbH & Co. KG
Oehleckerring
40
∙
D-22419
Hamburg
∙
Germany
∙
+49 40 537122-0
∙
+49 40 537122-99
∙
∙
www.hivolt.de
5.14
Troubleshooting
If the device behaves unusual or erratic, please switch off the supply voltage and check the wiring of
the load and that of the control and monitoring signals. Check the connected load and the signal
source. Check the interlock circuit.
Do not attempt to locate any faults within the device. This can be dangerous to life due to the high
voltage used in the device. In such a case, please return the device to the manufacturer after
consultation.
Symptom Possible
causes
Device will not turn on;
DVM displays will not light up
-
No supply voltage present
-
Fuses F1, F2 in the IEC inlet defective (
HAR12S
)
Output signal is distorted
-
Load capacitance too large for the desired slew rate
(see section 3.5 for load conditions)
Power supply and input signal
present but no output signal
-
Examine the level of
INHIB
input signals
5.15
Maintenance
Depending on the cleanliness of the ambient air dust may accumulate within the unit possibly blocking
the airflow. In that case the accumulated dust has to be removed by taking out the amplifier modules
and blowing out the unit and the modules cautiously.
The manufacturer specified lifetime of the
HAR12S
fans is >50000h. After about 6 years of continuous
operation the fans might be replaced.
Type: Sunon
MF60252V21000UA99
Caution:
disconnect the unit from the power supply before removing any modules or opening any
covers.
Further regular maintenance is not required.
5.16
Cleaning
If necessary, wipe the device with a slightly damp cloth. Do not use abrasive detergents or solvents.
© hivolt.de GmbH&Co. KG, Hamburg, Germany
As of 07/2020
Document History:
Version Date
Name Changes
1.0 10/2016 WM
created
1.1
2020-07-16
WM
updated layout and content
