5
Handling Endless Looping problems
As explained above, endless looping problem will be declared when the number of consecutive
flushing cycles triggered by the DP sensor exceeds the “Looping limit” defined during configuration.
The fact that endless looping problem was detected will be indicated on the display and will cause the
activation of the Alarm output, additionally, the DP indication will no longer be considered as a trigger
for flushing. The following flushing cycles will be triggered by the interval count down only.
The problem will be considered as solved when the constant indication of the DP sensor will be
removed.
Handling Low pressure
When a closed contact indication is received at the low pressure input of the controller, the symbol
will start to appear blinking at the display. All activities will stop including the countdown to the next
flushing cycle. If the low pressure happened while a flushing sequence was in progress, when the low
pressure condition terminates the flushing sequence will start from the beginning rather than continue
from the stop point.
Connecting the DP sensor to the filter system
The DP sensor is connected to the filter system by 2 command tubes, the
one which comes from the filter inlet (High pressure) will be connected to
the red point, and the one that comes from the outlet (Lower pressure) will
go to the black point. It is important to put a small filter of 120 mesh (not
supplied) between the red point and the high pressure connection point.
Low battery
The unit has two levels of low battery indication. At the first level when the battery voltage drops to the
first level, the sign
will start to appear at the screen. When the battery voltage drops further and
reaches the second level, all outputs will shut down, the screen will be cleared leaving only the low
battery icon.
Manual activation
A flushing sequence can be manually activated by the “MANUAL” key. When manually activated the
icon
will appear on the display. The same key will be used for manually terminating a sequence
in progress.
The small filter to be added between the high
pressure inlet and the red point. It is the user’s
responsibility to add this filter.
