Edwards STP-iXA4507 Series - Other Warning

STP-iXA4507 series Turbomolecular Pump
MT-91E-001-0
Page 130
SAFETY FUNCTIONS
PAG
E
130
7
7.3.6 Other Warning
Occurrence condition
Pump operation
Countermeasures
Air-cooling fan failure
(FAN Warning)
Continuing operation.
When operating continuously,
the STP pump may overheat
and detect overheating
abnormality.
Contact our Service office.
The operation of the air-cooling
fan has exceeded the expected
life
(FAN Lifetime Over)
Continuing operation.
When operating continuously,
the air-cooling fan may break
down.
It is recommended to replace
the fan.
Contact our Service office.
An unexpected restart of the
control unit during the pump
rotation
(C/U Restart)
Each interface signal re-
outputs the current status
after initialization. At warning
detection, if the pump is in the
normal operation or
acceleration, the pump
accelerates again and
operates continuously.
An influence of external noise
may be assumed.
Check the settings of the STP
pump, and take measures to
reduce the influence of external
noise.
Disconnection/Short circuit of
rotor blade temperature warning
sensor
(RTMP Lost)
Maintain rotation
Contact our Service office.
High temperature of rotor blade
(RTMP Higher)
Maintain rotation
(Warning messages are
erased automatically as
temperature drops, but
notification history is held.)
1. Overload
Check the conditions of the
pump.
2. Excess product deposition
Plan for STP pump
overhaul.
3. Inappropriate purge gas flow
rate
Apply the flow rate
described in the STP pump
specifications.