Grundfos Selcoperm SES 125-2000, Installation And Operating Instructions Manual

Page: 23 / 32

English (GB)
23
8. Fault finding
For locating the components, see figures 2 and 3 .
Fault Display text Possible cause Possible remedy
High voltage
HIGH VOLTS
Lack of brine in electrolyser cell (1) Check settings of brine pump (3).
Check SG. See section
6.5.2 Checking the salinity
of the electrolyte .
Scale on electrodes Check softener operation. See section
6.5.1 Checking the water hardness .
Regenerate softener if necessary. See section
6.2.1 Manual regeneration .
Acid clean if necessary. See section 7.8 Acid
cleaning .
Water flow too high Adjust to correct value using water flow adjustment
valve (8). See section
3.4 Typical unit set points .
Lack of salt in brine tank (A) Check and refill if necessary.
High resistance on DC cable connection Clean and tighten connection. Use electrical
contact grease.
Input voltage low Check incoming voltage/check fuses.
Leakage in casing of electrolyser cell (1) Replace gasket/O-ring if necessary.
Electrolyte sample valve (G) open Close valve.
Low voltage
LOW VOLTS
Too much brine in electrolyte. Check settings of brine pump (3).
Check SG. See section
6.5.2 Checking the salinity
of the electrolyte .
Water flow too low Check and adjust inlet water pressure.
Adjust water flow.
Temperature failure
control panel
PANEL TEMP
Low water flow or failure of water flow switch Check water flow and flow switch settings.
High ambient temperature
Ambient temperature must not exceed 40 °C.
Cooling fan failure Check and replace if necessary.
Cover of electrolysis chamber not
fitted/broken Check and refit or replace.
Faulty temperature sensor Replace temperature sensor.
Temperature of
electrolyser cell (1)
to high
CELL TEMP
Mains water temperature to high Check and rectify.
High ambient temperature Ambient temperature must not exceed 40 °C.
Faulty temperature sensor Replace temperature sensor.
Ventilation failure
AIR FLOW
Degassing column (2) not full of liquid Check for ventilation blockage.
Faulty degassing column level sensor (9) Check and adjust. Replace if necessary.
Vent pipe blocked Check for blockage and remove blockage.
Power failure at fan (19) Check fuses.
Motor failure at fan (19) Replace fan.
Failure of air flow sensor (13) Check and replace if necessary.
Control lamp of
mains supply (23) is
off Lamp failure Check and replace.
No incoming voltage Check incoming voltage/check fuses.
Product tank filling
level to high
TANK LEVEL
HIGH
Failure of product tank level sensor (25) Check and adjust if necessary.
Solenoid valve (5) failure/passing liquid Check and clean valve seat. Replace if fault
persists.
Product tank filling
level to low
TANK LEVEL
LOW
Unit not switched on Check and rectify.
Product demand too high Reduce demand.
Failure of product tank level sensor (25) Check and adjust or replace if necessary.
Product tank (M) leaking Check and repair.
Remote stop enabled Check and rectify.
Water flow failure
WATER
FLOW
Low water inlet pressure Contact local authorities.
Failure of flowmeter switch (20) Check and replace.
Filter in pressure reducing valve (10)
blocked Check and clean.
Water flow adjustment valve (8) closed Check and adjust to correct value.
Collecting tray flood
switches:
Product tank,
Electrolysis
chamber, Hydraulic
chamber
LEAKAGE
Solenoid valve (5) failure/passing liquid Check and clean valve seat.
Replace if fault persists.
Leakage in pipe fitting Check and repair.
Leakage in product tank or from product
dosing pumps Check and repair.