Evoqua V10K - Page 22

5. Operation V10k automatic
22
EN
5.6.2 Fault at the positioner and the control
Injector does not meet
requirements.
Change injector parts.
Gas filter in vacuum control
valve clogged.
Replace the filter.
4 Flowmeter float
moves erratically.
Deposits on flowmeter parts. Clean flowmeter.
5 Odour of chlorine in
chlorinator room or
vicinity.
Pressure relief valve blows. Clean resp. replace vacuum
control valve. Replace the filling
of the activated carbon filter.
6 Water in flowmeter Defective check valve in
injector.
Dry the system, check injector.
7 Gas feed rate cannot
be adjusted properly
V-notch stem worn. Replace V-notch stem.
V-notch orifice worn. Replace orifice.
Vacuum control valve defec-
tive.
Replace regulator.
8 Feed rate too high Membrane in differential
control valve broken.
replace W3T165515 (specialist).
No. Symptoms Probable cause Remedy
No. Symptoms Probable cause Remedy
1 Rack does not move,
although the positio-
ner receives signal
from the control.
Positioner is in manual ope-
ration (knob is pulled).
Switch to automatic operation
(push the knob).
External separation switch
(optional) is set to OFF or
manual.
Switch to AUTO.
No mains Check the mains from control
unit, mains supply, switches,
fuses.
Rack is blocked Check load (max. 135 N).
Limit switch in the positio-
ner has switched
Check the limits, adjust if neces-
sary.
Motor defective Check the wire resistance.
Gear defective (chattering
noise)
Replace Motor and gear.
Board defective (switches,
capacitor)
Replace board
230 V: part no. W3T173185,
115 V: part no. W3T173203
2 Rack does not move,
although knob turns.
Rack defective (wear) Replace rack.