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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‑temperature alarms on our dry pumping systems are dry pumping system
protection trips and should be considered as an abnormal running condition. If a dry
pumping system has tripped due to any high‑temperature alarm it should be
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.
6.5 Emergency stop
Note:
The emergency stop switch is not an electrical isolator.
The emergency stop controls 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
Connect to the emergency stop circuit
When an emergency stop is selected:
▪
The dry pump is switched off.
6.6 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 has been used to shut down the dry pumping system, the
emergency stop switch must be reset before the dry pumping system can be restarted. If
the run and stop switches are not fitted, power off the pump for at least 1 minute then
restart the dry pumping system as described in
switches are fitted, push the run switch to restart the pump.
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
restarted. If the run and stop switches are not fitted, power off the pump for at least
1 minute then restart the dry pumping system as described in
run and stop switches are fitted, push the run switch to restart the pump. If the alarm
was caused by high pump temperatures, refer to
page 52. Make sure that there is no issue with the cooling system and restart the dry
pumping system as described in
6.7 Dry pump clean
The high flow purge and the solvent flush kit is available to clean the pump mechanism
on applications where large quantities of dust and sticky deposits are encountered. The
cleaning process is carried out without the need to remove the pump enclosure.
A41870880_A
A41870880_A - Operation
on page 44.
Start up
on page 50.
Page 53
Start up
on page 50. If the run and stop
Start up
Unplanned shut down and alarms
07/2021 - ©Edwards Limited
on page 50. If the
on
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