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9.2 Faults with error message
Service staff only
Error message Cause Remedy
"low level HCl" or "low level
NaClO2"
HCl or NaClO
2
container is almost empty.
Change the HCl or NaClO
2
container.
OCD-162-05, -10: the chemical containers
must be positioned under the system.
The floater on the suction lance has a wrong
orientation.
Turn the floater upside down.
"empty HCl " or "empty NaClO2" HCl or NaClO
2
container is empty.
Change the HCl or NaClO
2
container.
OCD-162-05, -10: the chemical containers
must be positioned under the system.
"check ClO2 batch"
Warning message, undefined contents in the
internal batch tank after power supply failure.
Drain the internal batch tank manually, and
dispose of the content.
"level int. batch tank"
Too much water is flowing into the internal batch
tank, so the ClO
2
solution is too highly diluted.
Water is in the volume compensation bag or the
activated carbon filter or the adsorption filter.
Stop the system.
• Solenoid valve is leaking.
Check the solenoid valve. Clean or replace
the strainer in the solenoid valve.
• Faulty level indicator in the reaction tank.
Too much HCl and/or too much NaClO
2
is flowing
into the internal batch tank.
Replace the level indicator in the reaction
tank.
• Dilution water pressure is too high.
Check the dilution water pressure and
adjust it according to the requirements.
"level ext. batch tank"
Faulty changeover switch in the external batch tank,
or external batch tank is overfull.
Replace the changeover switch in the
external batch tank.
"timeout 1st dilution water"
During the first dilution water supply, the level in the
reaction tank has increased too slowly. Level K1
was not reached in time.
Check the dilution water supply.
• Strainer in solenoid valve is clogged, or solenoid
valve is faulty.
Check the solenoid valve in the "relays"
menu, see section 9.4.3 Relays.
Replace the filter, or replace the solenoid
valve.
• Dilution water supply is not sufficiently open. Open the dilution water supply further.
• Level indicator in the reaction tank is damaged.
Replace the level indicator in the reaction
tank.
• Dilution water pressure is too low. Dilution water
pressure has to be at least 3 bar.
Check if the hose for dilution water is not
bent.
Check if a further consumer is connected to
the dilution water hose.
"timeout HCl pump"
During HCl supply, the level in the reaction tank has
increased too slowly between the levels K1 and K2.
Level K2 was not reached in time.
Check the hose from the pump to the
reaction tank for assembly faults.
Check the HCl pump in the "relays" menu,
see section 9.4.3 Relays.
Insufficient performance of the HCl 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.
HCl 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.
• HCl 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 HCl container.
• If "empty HCl" is signalled, replace the
HCl container.
• Pump is not running at all. Check the pump. Replace the pump, if
necessary.
• Cable breakage between HCl 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.
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