Edwards iXM Series, Instruction Manual

Page: 65 / 104

6.1.5 Restart the pump after a controlled stop or automatic shut down
Note:
If the system has automatically shut down because of high pump power, check that the
pump is free to rotate before restarting the system. Contact your supplier.
If the controlled stop button on the front panel has been used to shut down the system,
reset the controlled stop button before restarting the system. Turn the controlled stop
button to reset it, then restart the system as described in Start-up on page 59 .
If the system has been automatically shut down because of an alarm condition, the
alarm condition must be corrected before restarting the system. Restart the system as
described in Start-up on page 59.
6.2 Shut down
WARNING: SYSTEM CONTROL MODULE
Risk of injury or damage to equipment. If the system is shut down and is not isolated
from the electrical supply, do not disconnect the Pump Display Terminal. Do not
release control from the Pump Display Terminal or front panel. This can result in the
system being started by another module.
WARNING: ROTATING PARTS
Risk of injury. Do not remove the inlet connections until the pump stops and the
power and N
2
supply has been isolated. The pump can take up to three minutes to
completely stop.
CAUTION: CONDENSIBLE BYPRODUCTS
Risk of damage to equipment. If the pump is stopped without the nitrogen purge
cycle (for example by using the EMS button) on processes that have condensible or
solid byproducts the pump will possibly not restart.
The pump can only be stopped through the module in control of the pump. The pump
can be shut down by one of:
▪ The MicroTIM
▪ The PDT
▪ The front panel controls
Note:
The EMS button will always stop the pump. It does not matter which item has
control. Refer to Controlled stop on page 63
If the pump is not required for some time, switch off the electrical supply and the
cooling water supply.
10/2020 - ©Edwards Limited Page 62 M56635880_D
M56635880_D - Operation