INSTRUCTIONS FOR USE
04.AK.02_5GB • December 2011
...with people in mind
© ARJO Hospital Equipment AB 2009
ARJO products are patented or patent pending. Patent information is available
by contacting ARJO Hospital Equipment AB.
Our policy is one of continuous development, and we therefore reserve the
right to make technical alterations without notice. The content of this
publication may not be copied either whole or in part without the consent of
ARJO Hospital Equipment AB.
Thank you for purchasing ARJO
Your Century is part of a world-wide family of
quality products designed especially for efficient
resident hygiene and good ergonomics for the
caregiver.We are dedicated to serving your needs and
providing the best products available along with
training that will bring your staff maximum benefit
from every ARJO product.
Please contact us if you have any questions about the
operation or maintenance of your Century.
Please read this manual thoroughly!
Please read this manual in its entirety before using
your Century bath tub. Information in the manual is
crucial to the proper operation and maintenance of
the equipment, and will help protect your product
and ensure that the equipment performs to your
satisfaction. Some of the information in this booklet
is important for your safety and must be read and
understood to help prevent possible injury.
ARJO strongly advise and warn that only ARJO
designed parts, which are designed for the purpose,
should be used on equipment and other appliances
supplied by ARJO, to avoid injuries attributable to
the use of inadequate parts.
Unauthorised modifications on any ARJO equipment
may effect its safety. ARJO will not be held
responsible for any accidents, incidents or lack of
performance that occur as a result of any
unauthorised modification to its products.
Symbols definition in this manual:
Safety warning. Failure to understand and obey this
warning may result in injury to you or to others.
Failure to follow these instructions may cause
damage to all or parts of the system.
This is important information for the correct use of
this system or equipment.
The name and address of the manufacturer.
Service and Support
A service routine has to be done on your Bath
Systems every year by ARJO authorised service
personnel to ensure the safety and operating
procedures of your product.
See chapter Preventive Maintenance Schedule.
If you require further information, please contact
your local ARJO representative which can offer
comprehensive support and service program to
maximise the long-term safety, reliability and value
of the product. Contact your local ARJO
representative for replacement parts. Your service
representative stocks the parts you will need.
The telephone number appears on the last page of
The directions right or
left on this product are
shown in the
This equipment must be used in
accordance with these safety
Anyone using this equipment must
also have read and understood the
instructions in this booklet.
If modifications are made to the
equipment without the expressed
acknowledgement of ARJO, or if the
product is not checked and maintained
according to the chapter on Care and
Maintenance in this manual, the
product liability from Arjo will be
This equipment is intended for
therapeutic bathing and showering of
hospital or care facility residents under
the supervision of trained nursing staff
in accordance with the instructions
outlined in the Operating and Product
Care Instructions. All other uses must
Equipment fitted with a bath tub
disinfection device must be disinfected
according to the instructions
established in the Operating and
Product Care Instructions. All other
uses of the disinfection device must be
The equipment must only be used for
the purposes stated above, and must be
installed according to the Assembly
and Installation Instructions, which
can only be superseded by local code.
The expected lifetime of this
equipment, unless otherwise stated, is
ten (10) years, subject to required
preventative maintenance as specified
in the Operating and Product Care
Instructions, the Assembly and
Installation Instructions and the Spare
Always make sure that:
❏ the equipment is handled by trained staff.
❏ the water/shower temperature is checked with your bare
hand before the bath. Do not use a glove while checking
❏ equipment is properly disinfected after each bath.
❏ your skin and eyes are protected against concentrated
disinfectant/cleaner. Carefully follow the instructions on
the disinfectant/cleaner bottle!
❏ all lifting/transporting equipment is in good condition
and follow the instructions for all equipment.
❏ there are no parts with sharp edges coming in contact
chair seats, mattresses etc., are fastened and all screws
are tightened. Also check for cracks and tears that would
allow water to get into the mattress filling. If there is such
damage, then replace it!
❏ the castors of the lift are locked, except during transport.
❏ the resident is sitting firmly, securely and in direction to
face the panel to avoid injuries.
❏ lift is moved around with care, especially in narrow
passage and over bumps etc.
❏ the resident's hands and feet are placed on appropriate
❏ safety straps are in good condition and properly
❏ the equipment is not switched off via the safety switch.
The safety switch is for emergency situations and service
Do not allow the resident or operator to sit
on the end or side of the bath tub.
A professional assessment of the resident must be
made in order to ensure their suitability to use
Always mount the cover over the hydromassage
inlet (no 17 on page 9) to avoid that the residents
hair gets trapped in the opening.
Do not allow anyone to stand in the bath tub.
Do not use the equipment in presence of
inflammable anaesthetic gases.
Modifications made to the equipment without
expressed acknowledgement from ARJO will
invalidate the supplier’s product liability.
Do not stack or place electrical equipment near
this devise. It can interfere with the equipment’s
operation and safety.
Do not use the hydrosound equipment for more
than 15 minutes at a time with a 15 minute stop
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety instructions. . . . . . . . . . . . . . . . . . . . . . . . 4
Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Parts designations . . . . . . . . . . . . . . . . . . . . . . . . 8
Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Basic functions . . . . . . . . . . . . . . . . . . . . . . . . . 12
Shampoo and Bath Oil . . . . . . . . . . . . . . . . . 12
Autofill function . . . . . . . . . . . . . . . . . . . . . . 12
Scalding protection. . . . . . . . . . . . . . . . . . . . 12
Resident shower . . . . . . . . . . . . . . . . . . . . . . 12
Hydromassage . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Hydrosound . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Bathing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Preparations for bath . . . . . . . . . . . . . . . . . . 20
Sitting resident . . . . . . . . . . . . . . . . . . . . . . . 20
Disinfection/cleaning instructions. . . . . . . . . . . 22
Hydrosound/ Still bath . . . . . . . . . . . . . . . . . 24
Hydromassage . . . . . . . . . . . . . . . . . . . . . . . 26
Care and maintenance . . . . . . . . . . . . . . . . . . . . 28
Preventive Maintenance Schedule . . . . . . . . . . 30
Trouble shooting. . . . . . . . . . . . . . . . . . . . . . 31
Technical specifications . . . . . . . . . . . . . . . . . . 33
Electric supply . . . . . . . . . . . . . . . . . . . . . . . 33
Water supply. . . . . . . . . . . . . . . . . . . . . . . . . 33
Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Control panel (see details on page 11)
Outlet for tub filling
Resident shower handle
Surface overflow outlet and
drain manoeuvring knob
10 Dispenser for Bath oil or
if Hydrosound: ArjoSound Water Conditioner (optional)
11 Shampoo dispenser (optional)
12 Disinfectant spray handle (behind door) (optional)
13 Flow meter (optional)
14 Storage container area, left; Disinfectant cleaner
15 Storage container area, right; Shampoo and Bath Oil
16 Treatment hose with nozzle
17 Inlet screen
18 Hydromassage outlet
19 Water flow and Air mix control
20 Hydrosound Transducing Plate
Filling and shower
Shampoo & Body wash
Disinfection / Autoclean
Shampoo and Bath Oil
1 The Bath Oil and Shampoo bottles are placed
behind a door on the right side of the panel. The
bottles should be mounted, sufficiently filled and
connected to their corresponding hoses and bottle
Bath Oil and Shampoo is dispensed by pressing
corresponding push button on the control panel.
Hold your hand under the shampoo outlet when
shampoo is dispensed.
Dosage will continue as long as the button is
When your bath system is equipped with Hydrosound,
the Bath Oil is replaced with ArjoSound Water Conditioner.
The bath system is equipped with an autofill function,
which is preset to one water level. For adjustments, call
your Arjo Service Department for assistance.
3 There resident shower is on the right side of the
4 Press the resident shower button on the control
panel (the LED above the button indicates when
the resident shower is activated).The resident
shower can not be activated during tub filling.
5 Lift off the shower handle, hold it over the bath
and press the trigger on the handle.
6 Allow a few seconds for the water to reach the
desired temperature. Direct the water stream
away from the resident and check the preset temperature setting on the display. If desired, adjust
the water temperature by using the knob on the
7 Also check by placing your hand in the water
stream to make sure that the water temperature
feels correct, before the water stream is directed
on to the resident.
The Century Bath is equipped with a scalding protection to reach a maximum safety for the resident. The
function is always activated during filling, showering
The scalding protection will activate before the water
temperature gets too high. The following will happen:
First, the actual autofill function will be interrupted,
then the tub filling LED will flash for approx.10 sec.
Following steps have to be done before the
scalding protection is reset and filling can
After LED has stopped flashing
• turn the knob on the thermostatic mixer to COLD
press the filling button until the display
shows 30-35° C (86-95°F).
Now, the bath is ready to use again.
Before the hydromassage starts, the tub should be filled
with water at the desired temperature over the hydromassage outlet (A).
The hydromassage from the built-in jet starts when the
hydromassage button on the control panel is pressed.
After 15 minutes, the treatment will automatically end.
During those 15 minutes, the treatment can be stopped
by pressing the hydromassage button.
The water flow is adjusted with the knob on the upper
right side of the bath tub. Start at a low intensity by turning the knob counter clockwise. The intensity of the
water flow is increased by turning the knob clockwise.
Adjust the direction of the water-jet by turning the
hydromassage outlet (5a). Remove the adjustable hydromassage nozzle if you want the jet to cover a wider area
(Just pull it out) (5b).
When the hydromassage is finished, press the hydromassage button on the control panel.
(optional accessory for hydromassage)
If hydromassage is activated, stop it by pressing the
hydromassage button before the treatment hose is connected. Remove the hydromassage nozzle (Just pull it
Connect the treatment hose to the quick coupling in the
(The treatment hose and the built-in jet within the tub cannot be used simultaneously.)
Direct the treatment hose nozzle into the water. Make
sure the air inlet (A) is above the water surface.
Hydromassage from the treatment hose starts when the
hydromassage button on the control panel is pressed.
(After 15 minutes, the treatment automatically ends.
During these 15 minutes, the treatment can be stopped
by pressing the hydromassage button.)
To adjust the jet stream intensity, turn the outermost part
of the treatment hose nozzle.
When the two dots on the nozzle are aligned, the jet
stream is at its most intensity. When turning the nozzle
90°, the jet stream intensity decreases. When turning the
nozzle 90° more, the jet stream intensity increases and so
on (see figure).
When the local treatment is finished, press the hydromassage button on the control panel.
Remove the treatment hose from the quick coupling by
pushing the hose while pulling the hose bracket.
Using the Hydrosound system
Hydrosound should not be used by pregnant
women as the unborn child could be particularly sensitive to the sound waves.
ARJO Hydrosound is a method of cleaning patients by
means of low frequency, low intensity ultra sound.
Working together with water, it’s an effective and skin
friendly method of cleaning the skin.
The amount of time and intensity setting used for
Hydrosound cleaning is a matter of choice consistent
with the degree of patient cleanliness required and
patient comfort. The longer the time of exposure and the
greater the intensity setting, the more efficient the cleaning will be.
For patients experiencing Hydrosound for the first time,
it is recommended that the intensity is set at the lower
levels before using the higher intensity settings.
Prepare the bath according to the section “Preparations
Do not use bath oils and skin conditioners
other than ArjoSound together with the
Hydrosound as they may inhibit the ultra
sound pressure waves.
Make sure that the water level covers the top of
the Hydrosound Transducer Plate (A).
Start the hydrosound by pressing the hydrosound
button on the control panel. After 15 minutes, the
treatment automatically ends. During those 15
minutes, the treatment can be stopped by pressing
the hydrosound button.
It is possible to select different intensity levels by turning the knob on the upper right side of the bathtub. The intensity is increased by turning the knob
clockwise. The levels 20, 40, 60, 80 or 100 mW/cm2
will be chosen step by step. The diode lamp (B)
will show a steady green light and a buzzing
sound will be heard when any active level is
selected. The sound will increase with each
A flashing yellow light will be shown when in test
mode. To turn it off, press the hydrosound button.
The same flashing yellow light will also be shown
in normal mode if problem occurs during the
treatment. See figure.
Bathe the resident with hydrosound activated.
Continuous skin contact with the Hydrosound Transducer Plate (illustration 2 - A)
may cause burn injuries.
Add Arjosound Water Conditioner after activating
the filling process. Press the Arjosound dispenser
button on the control panel.
Check that the conditioner mixes into the water.
Do not place the residents head below the
water surface or in the vicinity of the Hydrosound Transducer Plate
Press the hydrosound button on the control panel
to stop the hydrosound.
Raise the resident out of the water and then rinse
the resident thoroughly with the shower to
remove loosened particles from the skin.
Preparations for bath
The bath is prepared as following:
Close the drainage plug.
For the Autofill function, press the tub filling button to fill the tub with water. (The level is preset.)
Additional filling is achieved by pressing the tub
filling button continuously. The display will show
the filling temperature.
To intercept the Autofill function, when the
desired level is reached, press the button to stop
the filling. The display will show the filling temperature.
Sitting resident may be lifted without effort from
their bed or wheelchair by using the Alenti or
Calypso lift hygiene chair.
See Alenti or Calypso Instructions before use.
10 Bathe the resident.
11 After bathing, let the water run out of the bath and
sit the resident up. Position the back rest against
the resident's back. Raise the lift hygiene chair to
a convenient working height and then start showering the resident.
12 Dry the resident, as well as the underside of the
seat, to prevent water from dripping on to the
floor prior to moving the lift hygiene chair away
from the bath. Raise the lift hygiene chair, and
pull it away from the end of the bath. Help the resident to move their legs over the edge of the bath.
13 When moving the resident straight from the bath
to the bed, put a bath towel on the bed under the
lift hygiene chair's seat to avoid making the bed
wet. Dry the resident thoroughly after they are put
To avoid risk of injury, ensure that the resident keeps their hands on the hand rest
while being raised and lowered in the lift
hygiene chair, as well as during any movement and transport.
Check the bath water temperature with your bare
hand before the resident enters the water.
Position the lift hygiene chair next to the end of
Raise the lift hygiene chair to a position where it
is clear from the edge of the bath and move the
Make sure all resident parts are clear from
the tub rim before moving over the bath
and lowering into the tub.
If desired and if the resident is capable, rotate the
back rest out of the way, this allows the resident
to recline against the back of the tub.
Position the lift hygiene chair in the middle of the
bath and lower the lift as far as possible.
Make sure the resident's legs are stretched
out in front of them and not trapped under
Arjo Clean or (Arjo Cen Kleen IV in the
US and Canada)
For optimal performance use only ArjoClean (Arjo
For any questions regarding the proper disinfection procedure or for liquid product ordering information, call
product consultants at the service office listed on the
back cover of this manual. Disinfection and cleaning
will minimize cross-contamination and removing tissue
Failure to follow proper disinfection and
cleaning between baths can potentially
lead to severe cross-contamination
Open the access door on the left side of the panel
and place a bottle of ArjoClean (Arjo Cen-Kleen
IV) and connect the bottle connection.
Grab the disinfectant spray handle, and direct it
against the bottom of the bath tub.
Press the disinfectant button on the control panel
(the LED above the button indicates when the disinfection
Check the liquid value on the flow meter when the
disinfection function is active, so it is in accordance with the setting range in the recommendations.
If necessary, adjust the screw on the bottle.
If your bath system is equipped with hydromassage
go to page 26.
The disinfection/cleaning process can only
be started when all other functions are
The spray handle is placed behind the access door on
the left side of the panel and has a trigger handle.
Make sure that the disinfection hose is
placed to the right behind the cover
when not in use.
(see picture 1)
Always use protective gloves and protective eye wear when dealing with concentrated disinfectant. Avoid getting it on
your skin or in your eyes. If contact
occurs, rinse with large amounts of water.
If skin or eyes become irritated, consult a
physician. Carefully follow the instructions on the ArjoClean (Arjo Cen-Kleen
Mixture of cleaning agent
Arjo Clean (1,6% = 60)
All purpose disinfectant cleaner (0,8% = 70)
Disinfectant cleanser 4 (0,9% = <30)
Cen-Kleen IV (1,6% = 30)
Flow meter value
Hydrosound/ Still bath
Procedure to be performed before the first bath of the day and
then after every resident.
Look at the flow meter and make sure that there
is an appropriate mixture of disinfectant liquid
to the water.
After finishing the preparations on page 22 do the following:
Scrub and rinse tub and accessories if necessary, to
remove visible tissue residue or fluids before the disinfection process.
Close the drainage plug.
Direct the disinfectant spray handle against the bottom
of the bath tub.
Press the disinfectant button.
Spray the whole bath tub and lift with the disinfectant
Spray on the surface of the overflow outlet.
Press the disinfectant button, and place the disinfectant
spray handle back behind the access door.
Scrub the tub using the disinfectant that is collected at
the bottom of the bath tub.
Let the ArjoClean (Arjo Cen-Kleen IV) take effect
according to the recommended time labelled on the bottle.
10 Open the drainage plug.
11 Press the button for resident shower on the control panel
and rinse bath tub and accessories carefully with the resident shower.
12 Examine tub and accessories to ensure that all of the disinfectant cleaner is removed. Repeat rinse as needed.
13 Press the button for resident shower on the control panel.
14 Examine tub and accessories for visible damage.
15 After the last disinfection/cleaning of the day,
dry the bath tub and lift.