VACUUBRAND PC 620 - Manual (Page 28)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999029 / 01/10/2009
page 28 of 48
Starting and stopping the process control, venting the system and the operation modes two-point control
and continuous pumping are described in section basic setup Standard.
If the coolant valve is preselected, the coolant valve opens immediately after starting process control (the
coolant valve 24 V= at the controller is operated parallel (synchronous) to the coolant valve at the VMS
Module A), the symbol is displayed.
Basic setup Management:
The vacuum pump is switched off when the process control is stopped.
Attention: If working in basic setup Management without an in-line valve, air might enter the apparatus
through the pump when it is switched off, especially if the gas ballast valve is open.
Basic setup Management Plus:
The vacuum pump continuous to run for approx. 5 min. after process control has been stopped to remove
remaining condensate if necessary, symbol pump is flashing.
Only basic setup Management:
☞ If the pump is switched too frequently the warning triangle is
flashing.
☞ Check system parameters, especially the selected value
for
Δp.
Basic setup Management or Management Plus