YAMIT E.L.I. AF800N Series, Service Maintenance Manual

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The flush mode
The Flush Mode defines how the flushing cycles are triggered. The selectable options are as
follows:
OFF no flushing will take place
By time in this case the flushing cycle will be repeated in a selected interval or will be
triggered by
the DP signal depending on what happens first. No matter how was the flushing cycle
started the interval to the next cycle will start to be measured again after
each ending of a flushing sequence. The selectable intervals are as follows:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 minutes
2, 3, 4, 5, 6, 8, 12, 18, 24, 72, 120 hours
dp flushing will be triggered by DP only
If the “+” and “-“ keys are pressed and held down simultaneously, the “Flush Mode” filed will
show the left time until next cycle, alternately hours and minutes.
The accumulations
The unit accumulates and displays the number of flushing cycles caused by DP, by time, or
manually. At each of the accumulation fields, the “+” or “-“ keys may be used for cleaning
the accumulated value.
The configuration
In order to enter into the configuration process, press and hold down the ENTER key for at
least 3 seconds.
The unit will detect how many “plug-in” boards (each of 2 outputs) are used in each
particular case.
How will the outputs be allocated will depend on the definitions made during the
configuration process described below. The following rules apply:
1- Back flush valves will be allocated starting from output 1 and up.
2- The last back-flush valve can be canceled and then its allocated output will be left unused.
3- Alarm output, Delay-Valve and Main-Valve when defined, will be allocated in this order,
right after the last back-flush valve (whether in use or not).
Example:
Assuming there are 3 “plug-in” boards, this makes 6 outputs for use. If there are no Alarm-
output, no Delay-Valve and no Main-Valve all the 6 outputs will be allocated for back flush
valves.
If additionally a Main-Valve is defined, the first 5 outputs will be allocated for backflush
valves and output No. 6 for the Main-Valve. Output No. 5 (of the last backflush valve) can be
canceled and left unused. If additionally a Delay-Valve is defined it will be allocated to output
5 right before the Main0valve, leaving the first 4 outputs for backflush valves, and once again
output No. 4 (of the last backflush valve) can be canceled and left unused. If additionally and
Alarm-Output is defined it will be allocated before the Delay-Valve leaving only 3 of the first
outputs for backflush valves. No. 3 can again be canceled.
AF800N