Ecolab 2.237.82, Руководство по эксплуатации

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417101373_Ecodos-PCB.docx - 25 - Rev. 10-03.12
4.2.6 Fault indication
The red LED at the front side will light up and the buzzer will be activated if the pump motor
has become defective (short circuit). Buzzer can be switched off by pressing “ QUIT ” button.
The red LED at the front side will flash and the buzzer will be activated if a low level
(contact open) will be detected at input IN2. Buzzer can be switched off by pressing “ QUIT ”
button.
4.3 Conductivity mode
Inductive conductivity measurement as well as 2-wire conductivity measurement is available.
4.3.1 Controller function
Conzentration For Liquid Systems For Solid Systems
80…100%
Automatic pulse/pause controlled
(no adjustment possible)
Adjustable DC-motor speed
Automatic pulse/pause controlled
(no adjustment possible)
50…80% Adjustable DC-motor speed
Adjustable interval time
AC output ON: 1 sec (fix)
AC output OFF: 0 … 29 sec
0…50% Adjustable DC-motor speed
Adjustable interval time
AC output ON: 1 sec (fix)
AC output OFF: 0 … 14 sec
As soon as the concentration drops below the required value, the metering pump / AC-output
is activated according to upper described controller characteristics.
The desired detergent concentration will be set by DIP switch “
TIME/Titration ”
(range: 0,2 ... 12,6 mS/cm; w. factor 2: 0,4 ... 25,2 mS/cm).
Low detergent alarm delay time: In order to avoid that the low detergent alarm is activated after
a minor decrease of concentration, an alarm delay time (= t
max
) can be set on the PCB by DIP
switch “ Delay | Mode | ”.
Motor speed (for pumps) adjustable in all concentration ranges.
For solenoid valves an interval time is adjustable in concentration range 0 … 80%
NOTE
Delay time runs down only when conductivity is in range 0 … 80% and conductivity is not
rising.
Remaining delay time is stored every 30 seconds (necessary for Conveyor- or small DW with
wash cycles shorter than initial charge time).
In 2-wire conductivity mode metering cannot be performed if conductivity measuring cell is
not submerged.
Minimum water conductivity must be approx. 50 µS/cm.
Remedy: See Chapter 7 “Trouble shooting”
WARNING
Never connect both probe types (inductive, 2-wire) simultaneous at one PCB.
CAUTION
At Solid-Dosing units: Before removing of the capsule the QUIT-button has to be pushed.
So a flushing out is stopped for 30 seconds.