Aqua OC-105B, User Manual, Page: 16 / 17

SG-B SERIES STEAM GENERATOR
16 E005-28-10-12
Temp. window
display
“ LC ”
Something is wrong with the
Temperature Sensor
connection Check connection or change Temperature
Sensor
1. Check Temperature Sensor connection Temp. window
display
“ HC ”
Temperature Sensor is short
circuit
2. check controller if it is short circuit inside
Turn off steam
generator,water flow
out from steam
nozzle Something is wrong with
water inlet valve Check water inlet valve .clean it or change it
Something wrong with:
1.water inlet valve cut off power
supply , water flow
out from steam
nozzle
2.circuit board
Change circuit board or water inlet valve
Something wrong with:
1. circuit board
2. controller
3. relays on accessorial
circuit board Turn off steam
generator .it still
working
4. water level probe
Cut power supply at once .contact dealer at
once
Chapter six: Maintenance
The single biggest problem with steam generation is the build up of scale resulting from dissolved solids
within the water. Scaling can cause the elements to fail, the water level sensors not to function, premature
failure of the O rings resulting in leaks from around the elements. The extent of the problem will vary
according to the degree of hardness in the local water supply.
For all commercial operators we recommend the use of a water softener.
All users commercial and domestic must ensure a regular maintenance routine for descaling the generator.
The frequency of this will vary according to the degree of hardness in the local water supply and the
amount of time the generator is used. Check the water for hardness and arrange the descaling routine
accordingly.
High levels of hardness descale once every 50 to 100 hours of operation
Medium levels of hardness descale once every 100 to 250 hours operation
Low levels of hardness descale once every 250 to 1000 hours of operation.
To descale the generator use a solution of weak acid crystals (such as citric acid) mixed with water. The
citric acid crystals are available in sachets for descaling kettles from most hardware stores, commercial
operators in hard water areas may wish to purchase large quantities from specialist outlets. Follow the
instruction supplied with the crystals and allow sufficient time for the solution to dissolve the scale before
flushing out the generator.
Faults arising from a failure to descale the generator are not covered by warranty.
Because heating and cooling cause expansion and contraction it is important to inspect all the water and
steam inlets and outlets as well as their pipes and connectors on a regular basis to ensure there are no leaks.
Clean the filter net in the magnetic valve according to the water quality in the location.