Agilent Technologies TwisTorr 305-IC Mode D'emploi page 292

8 Technical Information
Error messages
MESSAGE DESCRIPTION
VDC Over Voltage The supply input voltage value is too
high (>26.4V).
Thermalpad Thermal connection between control
Overtemp unit and heatsink has failed
VDC Under The supply input voltage value is too
Voltage low (<21.6V).
Controller Over The temperature of the electronic
Temp control unit has exceeded the
maximum allowed value (68°C)
This overtemperature condition is
detected by the control unit
microprocessor
Pump Over Temp The temperature of the pump has
exceeded the maximum allowed
value.
This overtemperature condition is
deteted by the control unit
microprocessor
The value depends on the Gas Load
selection, as shown below:
(Ar) --> 50°C
(N ) --> 55°C
2
(He) --> 60°C
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ACTION
Check for the supply voltage
value, it has to comply with the
specified range
Check for the electrical
connection between the power
supply and the electronic
controller
Restart the pump
Contact Agilent to get
appropriate directions
Check for the supply voltage
value, it has to comply with the
specified range
Check for the electrical
connection between the power
supply and the electronic
controller
Restart the pump
Check for the pump cooling
system functionality (forced air
or liquid)
Wait for the controller
temperature to return below the
related threshold.
Restart the pump.
Check for the pump cooling
system functionality (forced air
or liquid)
Check for the Gas Load settings;
it has to be in compliance with
the gas type used by the
application
Wait for the pump temperature
to return below the related
threshold.
Restart the pump.
TwisTorr 305-IC User Manual / 87-901-058-01
LED STATUS (for ref)
Red Yellow Green
ON, Solid OFF ON, Inv
Flash
ON, Solid OFF ON, Inv
Flash
ON, Solid OFF ON, Inv
Flash
ON, Solid OFF ON, Inv
Flash
ON, Solid OFF ON, Inv
Flash