Thermo Scientific Barnstead GenPure xCAD Plus System, Operating Instructions Manual

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12
System control
Operating modes
Thermo Scientific GenPure
65
Non-stop mode
A press on the “nonstop” button switches the system to the non-stop mode.The non stop mode is the
only mode in which water can be dispensed from the system. It is also the mode in which the system
will continuously recirculate water with the system to keep the water ready for use. The circulation
pump starts to run, the (UF) rinsing solenoid valve (V4) opens for the set “Intv.rinse time”. Non-stop
operation is stopped automatically after 10 minutes. Then the system operates in the “Interval”-Mode.
The message
UV is shown in the display when the UV-lamp is switched on. The UV lamp can only be
switched on and off in this non-stop mode (see UV lamp). The TOC value is additionally shown in the
display (TOC or
UV only when applicable) whenever the UV-lamp is switched on for systems that
have the TOC option.
The display shows:
Interval operation
The system is in the Interval mode when the system is switched on with the ON/OFF button. The
Interval mode is used when the water system isn‘t needing to be in non-stop mode. This mode helps
protects the system against bacteria growth as it will periodically recirculate water. Water can not be
dispensed in this mode. The pump runs for the set interval pump time and the rinsing solenoid valve
(V4) opens for the set “Interval rinse time”. When the interval pump time has expired, the pump is
switched off until the end of the standstill time. The standstill time is given by the difference between
half an hour and the interval pump time, so that the pump and the solenoid valve are actuated in a
half-hourly rhythm. The TOC value is not shown in this operating mode.
The display shows: