Aqua SG B Series User manual

SG-B SERIES STEAM GENERATOR
2 E005-28-10-12
FOREWORD
Thank you for choosing our Aqua SG-B Series steam generator, please take the time to read these
instructions before you begin as they contain important information about the installation operation and
maintenance requirements.
SG-B Series steam generators are available in specifications from 3kw to 18kw and are equipped with our
OC-B intelligent controller. With this you can control not only the temperature and time duration of your
steam bath but also the light and fan of the steam room if installed, the automatic drain valve, automatic
descaling, change the temperature display between Centigrade and Fahrenheit; alter the working mode, as
well as displaying the steam generator's status by the 8 LEDs on the panel. Please note also that one
“OC-B”controller can control multiple SG-B Series steam generators.
Every SG-B Series steam generator is thoroughly tested before leaving the factory so there may be the
remains of water inside the boiler.
IMPORTANT
★read the manual before installation and operation
★This appliance must be connected to an all pole isolator
★This equipment must be installed by a competent person
★Disconnect the power supply before exposing electrical connections.
★Confirm the right voltage to your steam generator 1 or 3 phase.
SAFETY PRECAUTIONS for steam bathing
★Elderly persons, pregnant women, or those who is suffering heart disease, high blood pressure,
diabetes or not in good health are advised to seek medical opinion before using a steam room.
★Do not smoke in the steam room
★Avoid using the steam room immediately after strenuous exercise
★Do not use the steam room when under the influence of alcohol
★Leave the steam room at once if you feel sleepy, sick or uncomfortable.
★Ensure good ventilation through the steam room –10cubic meters per bather per hour recommended.
★We do not recommend this product is used by children under 16.
★Commercial operators should post a notice of these precautions in a prominent position
Chapter one: Specification
Please note that may not all models be available from your dealer.(chart 1)
Code Model Power
(KW)
Voltage
(V)
Phase
(N~)
Current
(A)
Dimensions(mm)
(L×W×H)
SG- 30B OC- 3 0 B 3. 0 230/ 400 1/ 3 13/ 4. 3 530×180×330
SG- 40B OC- 4 0 B 4. 0 230/ 400 1/ 3 17/ 5. 8 530×180×330
SG- 45B OC- 4 5 B 4. 5 230/ 400 1/ 3 19. 5/ 6. 5 530×180×330
SG- 60B OC- 6 0 B 6. 0 230/ 400 1/ 3 26. 4/ 8. 7 530×180×330
SG- 80B OC- 8 0 B 8. 0 230/ 400 1/ 3 34. 8/ 13 530×210×370

SG-B SERIES STEAM GENERATOR
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SG- 90B OC- 9 0 B 9. 0 230/ 400 1/ 3 39/ 13 530×210×370
SG- 105B OC- 1 0 5 B 10. 5 230/ 400 1/ 3 45. 6/ 15 530×210×370
SG- 120B OC- 1 2 0 B 12. 0 230/ 400 1/ 3 52. 0/ 17 530×210×370
SG- 135B OC- 1 3 5 B 13. 5 230/ 400 1/ 3 56. 0/ 19. 5 530×230×460
SG- 150B OC- 1 5 0 B 15. 0 230/ 400 1/ 3 65/ 21. 7 530×230×460
SG- 180B OC- 1 8 0 B 18. 0 230/ 400 1/ 3 78. 0/ 26. 1 530×230×460
Remarks if greater power is required one OC-B controller may be used to control two or more steam
generators, e.g. if you need a 30KW steam generator you can use one OC-B controller to control two 15kw
steam generator or three 10 kw steam generators .
OC -B C o n tro ller
To N e xt S la ve
Mast er
S la ve1
S la ve2
Te mperatu re se n sor
(Fig-1)
J3
From Master
J4
To Slave
To N ext Slave
Master
Slave1
Slave2
Tempe rature
sensor
OC-B C ontro ller
(Fig-2)

SG-B SERIES STEAM GENERATOR
4 E005-28-10-12
filter
(Fig-3)
1. parameter and dimensions of OC-B controller (chart 2)
model
working time
(minutes) Temperature
Dimensi
on
(L×W×Hmm)
remarks
OC-B 10-240 30-60℃
86-140℉150×92×22
When the time widow displays “Long”
the generator will operate continuously
until it is switched off.
OC-S 30 60×60
Steam on demand switch, press once it
will work 30 minutes , press again ,it
stop works , special for commercial user
Chapter two: the frame and functions of the SG-B series steam generator
Parts description of the steam generator
(1) the frame of steam generator (Fig-4)
1
2
15
8
9
6
12
14
11
7
5
3
4
10
13
16
(Fig-4)

SG-B SERIES STEAM GENERATOR
E005-28-10-12 5
(2) parts instruction (chart 3 )
No. Part description
1 Water inlet valve Automatically controls the water flow (maximum pressure 2bar)
2 Drain valve Controlled by controller .turn on or turn off to drain water
3 Power entry The route of power wire
4 Control cable entry The route of control cable
5 Stainless steel tankboiler
6 Insulation material Reduce the loss of the boiler heat
7 Water lever probe Detect the water level
8 Steam outlet Steam outlet
9 Pressure relief valve Operates if the pressure in the boiler exceeds 0.12MPa
10 Overheat switch Boil dry protector operates at 110 ℃
11 Main circuit board Control center
12 Accessorial circuit board Connect and control the heat element
13 terminal Connection for power supply
14 Earth wire plug Connection for earth wire
15 Descaling liquid inlet Descaling liquid inlet (1/2 inch)
16 Heat element Heat element
Parts description of OC-B controller.
(1)、OC-B controller(Fig-5）
2
1
35
6
4
7
16
17
9
8
15
10
14
11
13
12
(Fig-5)
(2)、Part description(Chart 4)
No. Part description
1 Push to operate
2 Push to operate
3 Dual function button push to select steam on demand mode or to drain
the generator manually when not steaming.
4 Dual function button used when steaming to set the time/temperature
and when not steaming to begin the automatic descaling

SG-B SERIES STEAM GENERATOR
6 E005-28-10-12
5 Increase button
6 Decrease button
7 Dual function button switches a fan on and off also used to confirm
changes in temperature settings.
8 Time display
window
Display the resting and operating time of the steam generator
9 Temp display
window
Display the detected temperature of steam room
10 Light LED Indicator LED for the lamp of steam room .it is on/off with the on/off of
the lamp in steam room
11 Water LED Indicator LED for water level .red means water is filling. green means
water level arrived control point.note:if the LED always in red (exceed 5
minutes).check water supply and if water level valve is block .otherwise
the water level inlet valve will be broken .
12 Drain LED Indicator LED for draining –shows red for manual draining and green for
automatic draining at the end of the cycle.
13 Mode LED Shows red is for steam on demand mode and green for conventional
timing.
14 Heating LED Green indicates heating is on, red indicates the required temperature
has been reached andthe heating has stopped
15 Overheat LED Indicator LED for over heat ,red means the steam generator was cut off
as the heat element is too hot (lack of water ,the heat elements may
worked in air)
16 Fan LED Indicator LED for Fan the lamp of steam room .it is on/off with the on/off
of the lamp in steam room
17 Clean LED Indicator LED shows descaling in operation.
Remarks : Please note for the generator to operate in steam on demand mode the steam on demand
button must be connected.
(3)、OC-S Steam on demand switch
The steam on demand switch can be located inside or outside of the steam room then connected to the
controller.
When the switch is operated the LED indicator inside the switch shows red and steam will be generated for
30 minutes. At the end of 30 minutes or if the switch is operated again, the light will go out and the steam
will stop.
(4)、commercial mode instruction(OC-B+OC-S )
If OC-B is under domestic model, only OC-B control the steam generator .OC-S doesn’t work. When
OC-B enter commercial model, The steam generator is under waiting status (the time window shows
“Long”and on circuit board the LED is flashing) , press OC-S it will operate steam generator , every press
will make the steam generator keep on working for 30 minutes , the temperature control will rely on the
OC-B controller’s setting before enter commercial model

SG-B SERIES STEAM GENERATOR
E005-28-10-12 7
Chapter three: installation
★Isolate the power supply before installation
★Confirm the model you have selected is suitable for your steam room, please refer to chart 5
★Mount the steam inlet nozzle approximately 300mm up from the floor and it should be at least 200mm
from person's body.
★If the steam generator is installed in an inaccessible place ensure that both the electrical power and
water supply can be isolated in an emergency.
★The minimum water inlet pressure is 0.025MPa and the maximum is 0.8MPa, advise the water
pressure not exceed 0.5MPa
★The steam pipe from steam generator to steam room should be kept to a minimum, pipes longer than 5
meters should be insulated to prevent heat loss. Steam pipes will be hot during use and must be protected
against accidental contact.
★Keep the number of right angle bends to a minimum and ensure that the track of the pipe does not
create a trap into which condensate would gather and cause a blockage. I.e. the pipe must not go down and
then up.
★There must be no valve or other blockage in the steam pipe
★The steam pipe should be metal of other material which can endure 150°C temperature, copper pipe
is recommended.
★It is not recommended to install the Steam generator outdoors or where it might be affected by frost.
Allow for a minimum space of 0.5 cubic meters to install the generator.
★Steam generator should be level side to side and front to back and should be installed so that the
arrows on the case point up.
★Do not install the steam generator in close proximity to hazardous substances.
Chart 5
Model Po
wer
Steam room volume
(m3) Model Power
Steam room volume
(m3)
SG-30B
3.0
KW
1.5-3 SG -100B10.0K
W 6 - 11
SG -40B
4.0
KW
1.8 - 4 SG -105B10.5K
W 7 - 11
SG -45B
4.5
KW
1.8–5 SG -110B11.0K
W 7 - 12
SG -50B
5.0
KW
2.5 –5 SG -120B12.0K
W 8-12
SG -60B
6.0
KW
4 -6 SG -135B13.5K
W 11-1 6
SG -70B
7.0
KW
5 -7 SG -150B15.0K
W 11-1 6
SG 80B8.0
KW
5-9 SG -180B18.0K
W 13-19
SG -90B
9.0
KW
6 - 10

SG-B SERIES STEAM GENERATOR
8 E005-28-10-12
The following table should be referred to for guidance only. Please note that the size of heater required to
heat a particular size of steam room will vary according to a number of factors including the type of
material used for construction, the height of the steam room and the ambient temperature.
For lightweight materials such as plastics and laminates 1 KW will heat up to 1 cubic meter of air for dense
materials such as stones and ceramics which will conduct the heat away more rapidly allow for up to 2KW
per cubic meter of air. Hot air rises so restricting the height to around 2 meters will ensure the user is sitting
in the steam for higher ceilings you may need to increase the power requirement.
The following table is given as a guide, ambient air temperatures and frequency of use (number of door
openings) can also affect the power requirements.
Installation
The steam generator should be installed in dry well ventilated place in close proximity to the steam room. It
can be placed on the floor or hung on wall. In order for installing and maintenance, please refer the Fig-7 to
prepare enough space .
To hang the generator on a wall drill 3 holes 8mm in diameter in accordance with the table below and use
the wall plugs and screws provided. Fix the top 2 screws in place first then hang the generator by the 2
keyhole shaped holes in the back plate. Then with the front cover removed fix the 3rd screw to secure the
unit in place.
OC-B
(
)
controller
can be ei ther in or
out of s team room
OC-B steamgenerator
insulation
closet
steam nozzle
under was hing basin
basem ent
Fig-6
Min500 Min300
Min400
Min500
Unit ：( mm )

SG-B SERIES STEAM GENERATOR
E005-28-10-12 9
Fig-7
char t - 6
Mo d e l A B C
OC- 3 0 B~ 0 C- 6 0 B 215 215 275
OC- 7 0 B~ OC- 1 2 0 B 215 215 315
OC- 1 3 5 B~ OC- 1 8 0 B 215 215 405
Water and steam connection
a. The water supply pipe and steam pipe should comply with local standards
b. Connect the water inlet valve of the generator to the 15mm mains water supply using a flexible hose
with 1/2 inch fittings.
c. Steam outlet (1/2 inch or 3/4 inch) use the same dimension copper pipe to connect it, if the steam pipe
is longer than 5 meter it should be insulated. During use the steam pipe will be very hot and must be
protected against accidental contact. Note that according to the location it may be necessary to attach an
additional length of pipe to the pressure relief valve in order to divert the steam flow to a safe direction
should the valve operate.
valve
wa te r l e ve l p r obe
S TEAM G E NE RATOR
the s team nozzle
shoul d be mm high
away form the ground in
order to let the bather more
comfortabl e the steam nozzle
shoul d be install ed in the place
whic h is far from the s eat
300
,
o ve rh ea t swit ch
(Fig-8)
d. Connect the drain outlet to a suitable drain via a copper pipe with the appropriate fittings.
e. Make a secure connection between steam nozzle & steam pipe.
f. Use non corrosive hose with ½inch unions to connect between the descaling liquid container and the
inlet valve; note the descaling liquid container must be mounted at least 500 mm above the steam
generator.
Installation for controller and temperature probe.
OC-B controller is water proof and can be installed inside or outside the steam room according to customer
preference.
(1) Ideally the control panel should be installed at a height of approximately 1200mm for ease of use.
(2) Installation method: drill a Φ40mm hole on wall. open the front cover of steam generator .pin the
control cable (6 cores) and temperature sensor cable (2 cores) to the relevant ports . put the protuberant
back of controller in the hole the bottom of controller press close to the wall .then fix it and cover the cover.
(3) Control panel installation: pin one end to circuit board ports in steam generator connect the other end
to the controller's cable.

SG-B SERIES STEAM GENERATOR
10 E005-28-10-12
118 mm
(Fig-9)
(4) Temperature probe installation: the temperature probe is installed inside the steam room at
approximately 1.2 to 1.5 meters high and away from the door. Use a Φ4mm screw fix it in place and
then connect to the wire from the controller.
temperature
sensor Φ4 screw
(Fig-10)
Installation for power supply and control cable
Confirm the correct voltage of power supply and wires.
Remove the knock out for the power cable entry and use a rubber grommet to protect the cable, connect to
the conductors to the correct terminals for single phase power supply use the copper bridge connectors,
for 3 phase supply remove them.

SG-B SERIES STEAM GENERATOR
E005-28-10-12 11
3
Sensor
OC-B
Co ntroller
Water Inlet
Valve
Drain
Valve
Descale Liquid
Inlet Valve
OC-S
Controller
JP1
2 2
4
SwitchC/ F
( V = DC5V )
Tank
H1
4
2
3-6Kw Steam Generator Circuit D iagram
L1 L2 L3N
LN
230V 1N~ 50/60Hz
400V 3N~ 50/60Hz
Hi-Temp Cut Off
(Manual Reset)
Transfo rmer
Temp2
2
4
Light (Max 100W=
V=230AC)
Fan
(V=230AC)
WHITE
BLUE
WHITE
RED
RED
RED
RED
RED
RED
BLACK
YELLOW/GREEN
Power OnREDD9
Wor ki ng OnGRE . D8
HeatOnYEL . D7
Water Fil l OffORA . D6
Dr ain OnREDD5
L iqu id I nlet OnREDD4
R eserve 1ONREDD3
L igh t OnREDD2
D1 RED Fan On
LED COLOR KEY
(Fig-11)
Tank
H2
H1
( V = DC5V )
Swit chC/ F
4
42
7-12Kw Steam Generator Circuit Diagram
2
JP1
OC-S
Co ntroller
De scale Liquid
Inlet Valve
Dra in
Valve
Water Inlet
Valve
OC-B
Con troller
Sensor 3
2 2
42
Temp2
Transformer
Fan
(V=230AC)
Light(Max=100W
V=230AC)
Hi-Temp Cut Off
(Manual Reset)
NL3L2L1
WHI TE
BLUE
WHI TE
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED
BLACK
BLACK
YELLOW/GREEN
N L Po wer OnREDD9
Worki ng OnGRE . D8
Heat OnYEL . D7
Water Fill OffORA . D6
Dr ai n OnREDD5
Liqu id Inl et OnREDD4
Reser ve 1 ONREDD3
Ligh t OnREDD2
D1 RED Fan On
LED C OL OR KEY
230V 1N~ 50/60Hz
400V 3N~ 50/60Hz
(Fig-12)

SG-B SERIES STEAM GENERATOR
12 E005-28-10-12
3
Sensor
OC-B Controller
Water I nlet
Valve
Hi-Temp Cut Off
(Manual Reset)
Light
(Max 100W=
V=230 AC)
Fan
(V=230 AC)
Transformer
Dra in
Valve
De scale Liquid
Inlet Valve
OC-S
Controller
JP1
2
13.5-18Kw Steam Generator Circuit Diagram
Temp2
2
4
2
4
4
SwitchC/ F
( V = DC5V )
H3
H1
H2
Tank
L1 L2 L3N
WHITE
BLUE
WHITE
YELLOW/GREEN
BLACK
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED
RED RED
RED
RED
RED RED
Power OnREDD9
Wor king OnGRE . D8
Hea t OnYEL . D7
Water Fill OffORA . D6
Drai n OnREDD5
Liqu id Inl et On
REDD4
Rese rve1 ONREDD3
Ligh t OnREDD2
D1 RED FanOn
L ED COLOR KEY
400V 3N~ 50/60Hz
(Fig-13)
Remove the knock out for the control cable entry and use a rubber grommet to protect the cable, connect
the cable to the relevant port on circuit board.
Ensure the power supply wire and control cable remain separated to prevent magnetic field of power supply
wire from disturbing control cable signal.
Steam on Demand Function
Commercial operators may wish to take advantage of the steam on demand function which will allow
customers to press the steam on demand button located inside the steam room after which the generator will
operate for 30 minutes then stop until activated again.
To operate the steam on demand function install the controller inside the plant
room alongside the generator then fit the push button supplied in a convenient
location inside the steam room and connect to the controller with the cable
provided.
ON OFF
/
OC-S

SG-B SERIES STEAM GENERATOR
E005-28-10-12 13
Chapter Four: Testing and operation
(1) Once the installation has been completed and checked turn on power and water supplies carry out the
following test.
(2) On the control panel press the “ ” key, (the key has a time-lapse function, press it for 1 second),
the time and temp windows display the data.
(3) The water inlet valve turns on & water enters the boiler, the indicator LED is red. When the water
level rises to the low water sensor level the elements switch on and the heating indicator LED is on, several
seconds later when the high water sensor is reached the water inlet indicator LED changes to green and the
water inlet valve will turn off.
(4) After a few minutes of operation it will begin steaming, for small steam generator 2-3 minutes, for
larger generators 3-5 minutes.
(5) Press the “ ” key again the controller turns off, there will be no data on display and the generator
will stop - no more steam.
(6) Press the “ ” key once more (temp and time display again) after a few seconds the generator will
begin steaming again, let the generator operate for a short while - the water level will fall to the low water
level, check that the water inlet valve opens automatically (the water inlet indicator LED becomes red)
During the cold water enters boiler , the steam generator still produce steam once the high water level is
reached again the water inlet valve will close the and the LED will go back to green .
(7) The time display counts down to show the remaining time, when it reaches 0 the steam generator will
stop heating.
(8) Once the steam generator has operated for 10 minutes or more when it is turned off (manually or
automatically) it will enter the automatic drain down cycle; this means once the temperature of the water in
the boiler falls below 80 ℃it will and drain and then flush before it can start steaming again.
Note when the steam generator is off you can drain it manually (flush boiler and drain) by pressing the
“drain”button –drain LED starts flashing - note that the water will only start draining once the temperature
has fallen below 80 ℃.
(9) “ ” This button has 2 functions if the generator is off this button can be used to drain the generator
manually. If the generator is switched on it is used to select the steam on demand operating mode.
(10)When the preset temperature for the steam room is reached 2 of the 3 element banks will switch off
allowing just the 1 bank to continue heating to maintain the temperature. Elements will cycle on and off to
maintain the temperature to within approximately 2.5 degrees above or below the preset requirement.
(11) Boil dry protection –if the water supply fails the water level indicator LED will change to red and
the steam generator will stop.
(12)The “ ” can output AC230V to power the transformer for a 12V for steam room lamp.
(13) “ ” this button has 2 functions it can be used to power a fan if fitted and is also used during the
temperature or time setting procedure to confirm the settings (see further details below)
(14) “ ” this button has 2 functions it is used to set the time and temperature settings and to start the

SG-B SERIES STEAM GENERATOR
14 E005-28-10-12
descaling operation (see further details below).
(15) To change the display temperature from Celsius (default) to Fahrenheit alter the settings of the JP1
pins on the circuit board, please refer last chapter circuit diagram.
Setting time and temperature
When the steam generator leaves the factory the default settings are 40℃and 1 hour of operation these can
be adjusted as follows;
(1) Time setting: press “ ” key the time display window will flash - press “”or “”
to adjust the time, every press the time will increase or reduce 5 minutes, once the desired setting is reached
press “ ” the window will stop flashing. You can adjust from the time from 10 to 240 minutes ,exceed
240 minutes it display “Long”means no time limited.. Note the controller has a memory function, if the
power supply is not cut off the next time you turn on steam generator last time you selected will be the
default time.
(2) Temperature setting: if you press“ ” once after you finish setting the time or otherwise twice the
temperature window will flash, enter the required temperature by pressing “”or “”to
adjust - every press will increase or reduce 1 ℃.you can adjust from 30℃-60℃(85-140℉,under
Fahr enhei tdisplay)once the required temperature has been set press “ ” key the window will stop
flashing.
(3) Auto-descaling can only operate when the steam generator is in the OFF mode i.e. the boiler has
finished steaming, the water has drained and flushed, the drain LED is off.
Before auto-descaling can commence a supply of dilute citric acid liquid must be connected from a storage
vessel positioned at least 500mm above the steam generator. For the dilution ratio please refer to the
information supplied with the citric acid.
IMPORTANT do not use strong acids or high concentrations as these may attack and destroy the element or
other metal parts of the boiler.
To start the process press the “ ” key for 5 seconds, “Clean”LED is on, time window displays last
setting time (default setting is 8 hours), press “”or “”5 seconds, the time window just
display hours, increase or decrease to set the required time, each button press will increase or decrease 1
hour, maximum is 24 hours, minimum is 1 hour. Once the setting has finished the flashing will stop and the
process will begin automatically by opening the inlet valve for the boiler to fill with the descaling solution,
the inlet valve will then close and the solution will remain inside the boiler for the preset time. At the end of
the sequence the drain valve will open and the boiler will drain and then flush with clean water; when the
cycle is complete the drain LED will go off.
Important notes
1. Ensure there is sufficient descaling solution in the container to completely fill the boiler - when liquid
level reached request point , the D4 LED on circuit board will be on
2. If during the descaling the power supply is interrupted do not operate the steam generator until either

SG-B SERIES STEAM GENERATOR
E005-28-10-12 15
the descaling process has been reset or the acid solution has been drained and the boiler flushed with
clean water –minimum 3 flushes.
Under commercial model , steam generator will produce steam very fast.
Chapter Five: Troubleshoot guide
Please note that we recommend all repairs are carried out by a suitably qualified person.
Trouble description cause solution
Something is wrong with: 1. check power supply voltage.
1. power supply 2. indicator LED of power supply on circuit
board isn’t on in red .then check
transformer.
2. transformer
3. main circuit board
3. if the LED is red .remove controller, use
circuit board turn on steam
generator .steam generator doesn’t
work .then circuit board is wrong. change
circuit board
4. controller
When the generator
is turned on there is
no display on control
panel.
5. control cable or port
4. if use circuit board ,the steam generator
can work normally. check the control
cable .port and controller.
Something wrong with: 1. indicator LED for water level is red.
check water supply ,water inlet valve
1. water supply valve isn’t
turned on.
2. check the connection of water level
probe.
2. water inlet magnetic
valve
3. check earth wire connection of circuit
board and boiler.
3. water level probe 4. indicator LED for water level is green.
check circuit board
4. main board 5. check if overheat switch is disconnect
5. earth wire of boiler and
circuit board
6. check heat elements
6. circuit board
Turn on steam
generator, press
“on/off”. The
controller is on .
indicator LED of
heating isn’t on. but
there is no steam
spout out
7. heat element
Something wrong with: 1. change main circuit board
1. main circuit board 2. change relay circuit board
2. relay circuit board
Steam generator is
turned on .control
panel is normal.
indicator LED for
heating is on .but
there is no steam
spout out3. heat elements
3. change heat elements

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.

SG-B SERIES STEAM GENERATOR
E005-28-10-12 17
The condition of the wiring and electrical integrity of the generator should be checked regularly - for
commercial operators this should be at least once a year.
Guarantee
All generators are guaranteed for 12 months from the date of purchase. This guarantee excludes
consumable items such as the electrical elements and failures resulting from misuse or abuse such as a
failure to descale as above.
AQUA
S.p.A.
Via Tonino Crotti 1
I –42018 San Martino in Rio (RE) ITALIA
Tel. [phone] r.a.
Fax [phone] Servizio Commerciale
Fax [phone]
Amministrazione
e-mail [e-mail] –web www.aqua.it