Emergency Stop; Restart The Pump After An Emergency Stop Or Automatic Shut Down - Edwards GXS Series Instruction Manual

Refer to
shutdown conditions.
If the dry pumping system has an unplanned shut down, ensure that the cause of the
shutdown is identified and rectified before restarting. If in doubt, contact us.
Note:
The high
protection trips and should be considered as an abnormal running condition. If a dry
pumping system has tripped due to any high
investigated and the reason for the alarm established. Once the fault has been remedied,
the dry pumping system should be left for a minimum of 30 minutes before attempting to
restart.

4.8 Emergency stop

Note:
The emergency stop switch is not an electrical isolator.
To shutdown the dry pumping system in an emergency, press the emergency stop switch
(refer to
can be operated in the user's control system if the emergency stop circuit has been
connected to the dry pumping system as described in
circuit on page 46.
When emergency stop is selected:
▪ The dry pump and the booster pump are switched off.
▪ The solenoid valve(s) in the gas module close, to switch off the supply of purge gas
to the pump.
▪ The solenoid valve(s) in the temperature control manifold(s) de‑energise with loss
of temperature control.
▪ The PDT will display 'ALARM 1.01/STOP ACTIVATED' (if connected) or it may display
'ALARM 186.01/ DP INV 0040 0000 / EMS'.
▪ The running LED will go off.
▪ The alarm LED illuminates.

4.9 Restart the pump after an emergency stop or automatic shut down

Note:
If the dry pumping system has automatically shut down because of the high pump
power, check that the pump is free to rotate before restarting the dry pumping system.
Contact us.
If the emergency stop switch on the front panel has been used to shutdown the dry
pumping system, the emergency stop switch must be reset before the dry pumping
system can be restarted. Turn the emergency stop switch to reset it, then restart the dry
pumping system as described in
If the dry pumping system has been automatically shut down because of an alarm
condition, the alarm condition must be rectified before the dry pumping system can be
M58800880_H - Operation
Automatic shut down on page 61 for information about alarms and automatic
‑ temperature alarms on our dry pumping systems are dry pumping system
Figure: Front panel controls, item 1). Alternatively, the emergency stop controls
‑ temperature alarm it should be
Connect to the emergency stop
Start up on page 54.
Page 62