Hach LXV526.98.1011A Wartung Und Fehlerbehebung Seite 21

Problem
The KCl electrolyte
consumption is too
2
slow .
A relay indicator on the
measurement screen
is flashing.
4.1 Reset the overfeed timer for relays
The overfeed timer setting for the relays prevents a condition that keeps the measurement value
higher than the setpoint or deadband setting (e.g., damaged electrode or a process upset) from
keeping a relay switched on continuously. The overfeed timer limits how long the relays and their
connected control element stay on independent of the conditions.
When the select time interval for the overfeed timer expires, the relay status flashes on the top-right
corner of the measurement screen until the overfeed timer is reset. Push diag, then select
OVERFEED RESET to reset the overfeed timer.
2
The KCl electrolyte consumption is too slow if the level of the reservoir decreases less than
1 mm in two days
Possible cause
The collar on the glass
part of the reference
electrode was not turned
to break the seal.
The overfeed timer has
expired.
Remove the reference electrode.
Carefully turn the collar to break the seal. When the collar
turns easily, the seal is broken. Refer to the illustrated
steps in Install the reference electrode in the installation
manual.
Push the collar down and turn the collar less than 1/4 of a
turn to lock the collar. When the collar is locked, the collar
does not turn. If the collar is not locked, the KCl electrolyte
will flow too fast from the reference electrode into the
measurement cell.
Reset the overfeed timer. Refer to
timer for relays on page 21.
Note: The overfeed timer setting is only enabled when the relay SET
FUNCTION setting is set to FEEDER CONTROL.
Solution
Reset the overfeed
English 21