amiad Filtomat MG-110P, Инструкции по установке, эксплуатации и обслуживанию

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MG110P
7.2013 Page 39 of 51
J. Annex A. – Operating filters that require a Delay Valve
In some cases there is a need to control a Delay Valve together with the filtration system, for example in installations
where a delay Valve is used for sampling the flushing water.
Amiad’s Flushing Controller contains two parameters which allow the user to control a filtration system that requires a
Delay Valve; these are the “Delay Valve Open” and the “Delay Valve Close”
parameters
( see screen number 9 ).
Please not that:
Each one of these parameters should be shorter than the “Flushing Time” Parameter.
The addition of the time set for the “Delay Valve Open” parameter with the time set for the “Delay Valve Close”
parameter should be shorter than the time set for the “Flushing time” parameter.
The following is a step by step description of the controller operation in installations that include a delay valve:
1. A single screen or gravel media filter with a Delay valve:
Starting the flushing cycle:
The same as in “A single TAF filter” above.
The flushing cycle:
Solenoid valve number 1 is switched on and the flushing of the filter starts.
The controller starts to counts down two parameters in parallel: The “Flushing Time” parameter
( see screen number
5 )
and the “Delay Valve Open” parameter
( see screen number 9 )
.
Once the “Delay Valve Open” parameter is counted down to zero the Delay solenoid is switched on.
During the flushing process when the count down of the “Flushing Time” reaches a value which is equal to the
“Delay Valve Close” parameter
( see screen number 9 )
the controller switches off the Delay Valve solenoid.
Once the “Flushing Time” parameter is counted down to zero the solenoid is switched off and the flushing cycle
ends.
1.1 A single screen or gravel media filter with both Main and Delay valves:
Starting the flushing cycle:
The same as in “A single TAF filter” above.
The flushing cycle:
The Main Valve solenoid is switched on and closes the filter’s downstream valve. The controller counts down the
“Delay Main Valve Close” parameter
( see screen number 8 ).
Once this count reaches zero the process moves to the
next stage.
Solenoid valve number 1 is switched on and the flushing of the filter starts.
The controller starts to counts down two parameters in parallel: The “Flushing Time” parameter
( see screen number
5 )
and the “Delay Valve Open” parameter
(see screen number 9)
.
Once the “Delay Valve Open” parameter is counted down to zero the Delay solenoid is switched on.
During the flushing process when the count down of the “Flushing Time” reaches a value which is equal to the
“Delay Valve Close” parameter
( see screen number 9 )
the controller switches off the Delay Valve solenoid.
Once the “Flushing Time” parameter is counted down to zero the filter solenoid is switched off and the process
moves to the next stage.
The controller counts down the “Delay Main Valve Open” parameter
( see screen number 8 ).
Once this count reaches
zero the Main Valve solenoid is switched off causing the downstream valve to reopen and the flushing cycle
ends.
2. A battery of screen or gravel media filters with a Delay Valve: