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6.4.8 OUTPUT sub-menu notes
OUTPUT DRIVE notes
If standard (default) is selected the valve will remain open until the conductivity drops below
the Set Point (plus the corresponding hysteresis). If 'pulsed' is selected the valve will open
for 10 seconds and close for 20 seconds. The pulsed feature is suitable for use with solenoid
or pneumatic valves only. It must not be used with motorised valves.
OUTPUT CLEAN notes
To select this feature, enter a duration time from 1 – 99 seconds or if a purge time is selected
1 – 9 seconds. A typical setting would be 20 seconds, increasing if the scaling on the probe
(and in the boiler) is causing frequent recalibration to be needed. Set the duration to zero if
the feature is not required.
Enter an interval time from 1 to 99 hours in 1 hour steps to set how often a cleaning cycle
should occur. A cleaning cycle will also occur whenever the unit is switched off and on.
During the cleaning cycle (duration) the cleaning current can be PULSED (1 second on and 1
second off) or CONSTANT. For most installations PULSED should be selected. If a new style
CP32 is being used, select CONSTANT as a pulsing circuit is already fitted. To determine
which type is fitted, look for the pulsing relay or the style of tip (see Figures 25 and 26).
Fig. 30 New style CP32
(with a pulse circuit)
Select: 'CONSTANT'
Fig. 31 Old style CP32
(pulse circuit not fitted)
Select: 'PULSED'
Constant
Pulsed
Pulsing
relay
Fig. 29
Duration Interval
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