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Instructions for Use
Error Messages
For a certain type of failure, the controller will self-diagnose the error and the
messages described in the following table are displayed.
Tab. 7
Error Messages
Message
CHECK CONNECTION
TO PUMP
PUMP WAITING
INTERLOCK
FAULT: PUMP
OVERTEMP.
FAULT: CONTROLLER
OVERTEMPERATURE
FAULT: TOO HIGH LOAD
FAULT: SHORT CIRCUIT
OVERVOLTAGE
142
Description
Wrong connection between the pump and the
controller.
The interlock signal of J1 connector is
activated by an interruption of the link
between pin 3 and 9 or between pin 4 and
15 of P1 connector, or because the external
interlock signal is open.
The pump upper bearing temperature
exceeded 60 °C.
The controller internal temperature
exceeded 65 °C.
In normal operation, the current drawn by
the pump is higher than programmed.
During normal functioning (after the start-up
phase), a short-circuit condition has been
detected in the power circuit.
A failure has occurred in the controller
power supply section, or the controller has
received a disturbance from the mains.
Agilent TwisTorr Medium-TMP Rack Controller User Manual
Repair action
Check connections between controller and
pump.
Press the START push-button twice to start
the pump.
Reset the short circuit between pin 3 - 9
and between pin 4 - 15 of J1 connector, or
close the external interlock signal.
Wait until the temperature decrease below
threshold value.
Press the START push-button twice
to start the pump.
Wait until the temperature decrease below
threshold value.
Check that the pump cable length has been
set correctly.
Press the START push-button twice to start
the pump.
Check that the pump rotor is free to rotate.
Press the START push-button twice to start
the pump.
Check connections and shortages between
pump and controller. Press the START
push-button twice to start the pump.
Press the START button twice to start the
pump again. If the message is redisplayed,
contact Agilent for maintenance.
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