English (GB)
48
"timeout NaClO2 pump"
During NaClO
2
supply, the level in the reaction tank
has increased too slowly between the levels K2 and
K3. Level K3 was not reached in time.
Check the hose from the pump to the
reaction tank for assembly faults.
Check the NaClO
2
pump in the "relays"
menu, see section 9.4.3 Relays.
Insufficient performance of the NaClO
2
pump
• Air in suction hose and/or dosing head.
• Pump is not dosing.
• Discharge hose is leaking, clogged, porous or
bent.
Check the discharge hose. Replace, if
necessary.
NaClO
2
pump is not sucking in
• Suction hose is leaking, clogged, porous or bent.
• Deposits are at the foot valve.
• Valve is not installed correctly or clogged.
Crystalline deposits are in the valves.
• Diaphragm is broken (leaking).
• Diaphragm tappet is torn out.
•NaClO
2
container is empty.
• Check the suction hose and suction
lance.
• Clean or replace the foot valve.
• Clean the valves.
• Replace the diaphragm.
• Check the fill level of the NaClO
2
container.
• If "empty NaClO2" is signalled, replace
the NaClO
2
container.
• Pump is not running at all. Check the pump. Replace the pump, if
necessary.
• Cable breakage between NaClO
2
pump and
control unit.
Check the cable from pump to control unit.
Replace the cable.
• Faulty control unit. Check the control unit. Replace the control
unit, if necessary.
• Level indicator in the reaction tank is damaged. Replace the level indicator in the reaction
tank.
"timeout 2nd dilution water"
During the second dilution water supply, the level in
the reaction tank has increased too slowly between
the levels K3 and K4. Level K4 was not reached in
time.
• See alarm message "timeout 1st dilution water". Check the solenoid valve and dilution water
supply in "relays", see section 9.4.3 Relays.
Check the water supply. See also alarm
message "timeout 1st dilution water".
"timeout production"
After overflow, the level in the reaction tank has
dropped back down to K1 too slowly.
• Insufficient dilution water supply. See alarm message "timeout 1st dilution
water".
• If the screw connection of the ClO
2
drain at the
reaction tank or the screw connection to the
internal batch tank is loose, or an O-ring is
missing in one of the screw connections, the
ClO
2
solution can not drain.
Fasten the screw connections or fit in a new
O-ring.
"timeout HCl pump"
During the third dilution water supply, no overflow
from the reaction tank into the internal batch tank
was determined.
• Dilution water supply and solenoid valve. Check the solenoid valve and water supply
in the "relays" menu, see section
9.4.3 Relays.
"timeout flushing"
• For example temporary power failure. Confirm the alarm message with [Esc] and
restart the ClO
2
production process.
"temperature error"
The temperature at the measuring cell has
exceeded the set measuring range.
• Faulty temperature sensor. Check the temperature sensor.
Replace, if necessary.
• Faulty cable of temperature sensor. Check the cable of the temperature sensor.
Replace, if necessary.
• Water temperature higher or lower than
measuring range.
Check the water temperature.
• Temperature measuring range set incorrectly. Correct the measuring range.
"slope error"
Fault during pH or ClO
2
calibration. Invalid
calibration result detected by plausibility check.
Repeat the calibration, clean the cell, or
replace the electrodes.
"fault of electrode/buffer"
Fault during pH calibration. Auto reading of buffer
data.
"error asym. pot."
Fault during pH calibration. Invalid asymmetry
potential detected by plausibility check.
Error message Cause Remedy
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