8
SANDSTORM
™
SINGLE-/DOUBLE-CHAMBER USER MANUAL
INITIAL OPERATION AND ADJUSTMENT
DP ACTUAL
DP SET
FLUSH
TIME
FLUSH
MODE
BARSec Hours
MANUAL
ENTER
The actual DP value.
Available only when the built-in
electronic DP sensor is used.
The DP set-point.
Available only when the built-in
electronic DP sensor is used.
The desired
flushing time
per station.
The desired flushing mode.
Contains either the flushing
interval or, when the flushing
is triggered by DP only, the
letters “DP.”
1.
Set the BackFlush controller:
The controller is equipped with an LCD display and 4 keys, as displayed below. When the unit is left
untouched for a minute, the display switches off and a beep is heard every 20 seconds to indicate it is
working.
Holding down any of the keys for a few seconds will bring the screen back to life.
The screen consists of several fields. Some of them are editable and some of them are not.
To enter the EDIT MODE, press the key. The EDIT MODE is indicated by blinking of the currently
editable field.
Each time you press the key, the next editable field becomes active and starts blinking.
Use the and keys to change the value in the active field.
Press the key again to set the selected value for the current field and move to the next editable field.
To return to a previous field during the process of passing through the editable fields, press the key
repeatedly until you get back to the FLUSH TIME field, and there are blinking fields. You can then begin
the process again.
Configuration
Parameter Definition Action
Main valve
(sustaining valve)
The pre-dwell delay between the main valve
opening and the opening of station 1
Select:
YES
if exists
Enter:
20 sec
Dwell time
The backwashing delay between stations Enter:
10 sec
DP delay
The delay during which the DP sensor reading
is expected to remain stable before reaction
Enter:
10 sec
Looping limit
The number of consecutive flushing cycles
triggered by the DP sensor before deciding
that there is an endless looping problem
Enter:
3
Alarm
Allocates one output for alarm activation Select:
YES
Delay valve
Allocates one output for delay-valve activation Select:
YES
if exists
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