LINET ELEGANZA 5 User manual

D9S001GE0-0101
Version
01
Publication Date
SERVICE MANUAL
ELEGANZA 5

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Eleganza 5 –Service Manual
Positionable bed for critical care
Author: LINET, s. r. o.
Related links: www.linet.com
D9S001GE0-0101
Version: 01
Print date: 2017-03-10
Copyright © LINET, s. r. o., 2017
Translation © LINET, s. r. o., 2017
All rights reserved.
Use this Service Manual in combination with User Manual for Eleganza 5 (D9U001GE0-0101).
All trademarks and brands are the property of the appropriate owners. The manufacturer reserves the right to
changes in the contents of this manual that relate to the product´s technical regulations. It is for this reason that
the contents of this manual may indicate differences from the current manufacture of the product.

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Contents
1Introduction –General information................................................................................5
Product label and technical label –location........................................................................................51.1
1.1.1 Product and technical label description.........................................................................................5
Identification of bed sides ...................................................................................................................61.2
2Technical data and Symbols...........................................................................................7
3Theory of Operations ......................................................................................................8
Power box ...........................................................................................................................................83.1
3.1.1 Power box overheating..................................................................................................................8
3.1.2 Technical parameters....................................................................................................................9
Control unit..........................................................................................................................................93.2
3.2.1 Technical parameters..................................................................................................................10
3.2.2 Control unit modes and safety functions .....................................................................................10
3.2.3 Saved values...............................................................................................................................12
Rechargeable battery........................................................................................................................133.3
3.3.1 Charging of rechargeable battery................................................................................................13
Head side rails ..................................................................................................................................143.4
3.4.1 iBoard ..........................................................................................................................................14
Foot siderails.....................................................................................................................................163.5
3.5.1 Controllers in foot side rails .........................................................................................................16
Additional supervisor control panel (ACP)........................................................................................183.6Handset.............................................................................................................................................183.7Mobi-Lift®..........................................................................................................................................183.8Limit switches....................................................................................................................................193.9
3.9.1 Left and right side rail limit switches............................................................................................19
3.9.2 X-ray cassette limit switch ...........................................................................................................19
3.9.3 Extension limit switch...................................................................................................................19
Calf accelerometer.......................................................................................................................203.10 Weighing module.........................................................................................................................203.11 Weighing sensor (tensometer) ....................................................................................................213.12 Nurse call.....................................................................................................................................233.13 Integration module.......................................................................................................................263.14
3.14.1 Indication of device mode............................................................................................................26
Mattress platform actuators.........................................................................................................273.15
3.15.1 Backrest actuator.........................................................................................................................28
3.15.2 Thighrest actuator........................................................................................................................28
3.15.3 Calfrest actuator ..........................................................................................................................28
3.15.4 Extension actuator.......................................................................................................................29
Lift drives - Columns....................................................................................................................303.16 Undercarriage module (UcMo) ....................................................................................................313.17 Foot controller (height setting).....................................................................................................323.18 Foot controller (lateral tilt)............................................................................................................323.19 5th castor.....................................................................................................................................333.20 I-Brake.........................................................................................................................................353.21 Night illumination .........................................................................................................................363.22 iDrive - Driven 5th castor.............................................................................................................373.23
3.23.1 Technical specifications...............................................................................................................39
3.23.2 Electrical specifications ...............................................................................................................39
3.23.3 IDrive control panels....................................................................................................................39
3.23.4 Emergency button to retract the iDrive........................................................................................40
3.23.5 iDrive control unit.........................................................................................................................40

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3.23.6 Data transmission........................................................................................................................41
3.23.7 IDrive power box..........................................................................................................................41
3.23.8 Correction of voltage on iDrive ....................................................................................................42
3.23.9 iDrive rechargeable battery .........................................................................................................42
Outlet ...........................................................................................................................................453.24 Castors ........................................................................................................................................463.25 Bed wiring diagram......................................................................................................................483.26
4Bed Diagnostic ..............................................................................................................50
Errors –Failure States......................................................................................................................504.1
4.1.1 Pop ups........................................................................................................................................50
4.1.2 LED Blinking statuses..................................................................................................................51
4.1.3 Beeping - Sound signals..............................................................................................................51
iDrive signalisation ............................................................................................................................52
4.2
4.2.1 Audio signalling............................................................................................................................52
4.2.2 Light indicators.............................................................................................................................52
4.2.3 Fault signalisation (i-Drive Power)...............................................................................................52
LINIS4.3
4.3.1 Description of Linis items displayed on iBoard segment display.................................................53
4.3.2 Stop codes...................................................................................................................................54
4.3.3 Operation codes ..........................................................................................................................55
Faulty iBoard.....................................................................................................................................564.4Positioning with a single column.......................................................................................................564.5
5Bed Setup.......................................................................................................................57
Column and accelerometer calibration .............................................................................................575.1
5.1.1 Column and accelerometer calibration using the ACP................................................................57
5.1.2 Column and accelerometer calibration using the iBoard.............................................................58
Calibrating the i-Drive Power®accelerometers.................................................................................605.2Transport lock ...................................................................................................................................615.3RC circuit...........................................................................................................................................615.4
5.4.1 Function description and purpose ...............................................................................................61
Safe Stop (Anticrush)........................................................................................................................625.5
5.5.1 Disable of Safe Stop system .......................................................................................................62
Scale Calibration...............................................................................................................................625.6
5.6.1 Introduction..................................................................................................................................62
5.6.2 Diagnostic mode..........................................................................................................................62
5.6.3 Scale calibration ..........................................................................................................................63
5.6.4 Calibration mode:.........................................................................................................................64
5.6.5 Calibration constant setting .........................................................................................................66
5.6.6 Reconfiguring the sensor constants ............................................................................................67
Multizone Bed Exit Alarm Calibration................................................................................................74
5.7
5.7.1 Phase One...................................................................................................................................74
5.7.2 Phase Two...................................................................................................................................74
6Routine Maintenance, Visual Checks and Performance Test.....................................75
7Service Tools.................................................................................................................81
List of tools and equipment needed for servicing the bed ................................................................817.1
No

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1 Introduction –General information
Product label and technical label –location1.1
1.1.1 Product and technical label description

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Identification of bed sides1.2

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2 Technical data and Symbols
Follow User Manual for Eleganza 5 to find Technical Data and used Symbols.

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3 Theory of Operations
The aim of the chapter is to explain the functional principles of sets and individual components of the given LINET
product model, and their mutual relations.
Power box3.1
The power box transforms input voltage to 35V AC and sends it to the control unit (input 9). Mains power is
supplied to the power box via a three-core mains cable (in the relevant national standard). The power unit is
standard at voltage 230V –50/60 Hz, and alternatively at voltage 100, 110, 127V –50/60Hz. A filter is in the mains
connector of the power box. The power box transformer contains two current fuses. The first fuse automatically
disconnects voltage at a temperature of 100°C/212°F and reconnects the voltage after cooldown. The second fuse
disconnects the voltage permanently at a temperature of 130°C / 266°F. The 35 V AC power box has two 2A fuses
for the 230V version (2 x 4 A for low voltage –100, 110, 127 V) and is connected by a guard wire to the
undercarriage frame. It is in the head section of the undercarriage frame. The mains cable runs to the power box on
the undercarriage.
3.1.1 Power box overheating
If the transformer in the main control box reaches:
o100°C / 212°F – The main control box automatically turns off and turns on automatically
after cooling.
o130°C / 266°F – The heat fuse blows. It is necessary to replace the main control box.

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3.1.2 Technical parameters
Control unit3.2
The PB46.12 unit is used for controlling seven linear units, with outputs for controllers and a backup rechargeable
battery power source. It is controlled via low-voltage switches and allows the use of membrane keypads. The control
unit has 7 outputs for the linear units, an input for connecting a rechargeable battery, and an input for control panels
with safety functions (ACP). The PB46 unit also contains inputs for accelerometers, weight transducers, an
undercarriage module, limit switches, and an add-on matrix controller. The PB46 unit is built into the instrument case
and is equipped for dual power from the mains and from batteries. During mains operation, the rechargeable
battery is continuously powered and charged, and while the rechargeable battery is in operation, the electronics are
disconnected after approximately 3 minutes without command. The control unit has a function to stabilise speed
of the lift units (see Stabilization (calibration) of speed of lift units) of the mattress platform, and to lock the units (See
Positioning function locks and safety circuit to detect overload (See Detecting overload).
The voltage is conducted to the control unit by a cable from the power box, which is located in the undercarriage.
Parameters
Values
Dimensions:
310 x 125 x 90
Nominal supply voltage:
AC 230, 100, 110, 127V (±10%) / 50-60 Hz
Fuse protection:
2 x tube fuse 5 x 20mm
T2A for 230V; T4A for 100-127V
Cover:
IP54
Maximum performance:
internally limited
Maximum tolerance of configuration
of current limitation:
±20%
Power Supply (S6015145ND)

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3.2.1 Technical parameters
Parameters
Values
Dimensions:
310 x 125 x 90
Cover:
IP54
Number of outputs for motor units:
7
Output current for motors:
5 A
Current load of any motor output during positioning:
less than or equal to 5 A
Maximum voltage at outputs for motors idling:
42 V DC
Maximum performance:
internally limited
Maximum tolerance of configuration
of current limitation:
±20%
Number of control buttons (functional inputs)
30 - basic matrix 6 x 5
3.2.2 Control unit modes and safety functions
The architecture of the control unit is designed to exclude or significantly limit the risks arising from using a
programmable electronic system.
The default general requirement is the safety of the system when there is one fault. The basic safety features are:
3.2.2.1 Stabilization (calibration) of speed of lift units
The function to stabilise speed of lift units allows the speed of lift of all columns to be synchronized. This makes it
possible to maintain the bed in a horizontal position. Stabilisation must be performed after each change of
column, control unit, and accelerometer. The column units are calibrated using the ACP controller by pressing 4
buttons (mattress platform lift upwards, mattress platform lift downwards, Antitrendelenburg and CPR)
simultaneously for approximately 3 seconds. The signal LEDs of locks will then flash. By pressing and holding the
"CPR" button, calibration begins and the button must be held pressed until all the LEDs signalling the locks dim.
Successful calibration is signalled by an audio signal. (See chapter Calibration of Lift Units)
Mains control box (S6015123ND)

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3.2.2.2 STOP button located on the LCD panel
The main STOP button immediately stops all movements of the bed (undesirable movement) and deactivates GO if
positioning is not permitted or during failure of electrical components. A 10 kΩresistor is connected in parallel to the
STOP button inside the keypad. The electronics of the system detect the correct connection of the resistor
(connection of keypad and functionality of the STOP button). Its interruption (error in keypad, faulty resistor, cable...)
is signalled by an intermittent tone from the control unit. Without correct connection of both controllers to the
resistors (both iBoards), this function after activation with the GO button is only active for 5s. If at least one resistor
(iBoard) is connected, GO is active as standard for 3 minutes.
3.2.2.3 GO button located on the ACP panels, the handset, and side rails
All the control functions are conditional on the GO button being pressed (only the CPR and STOP button do not
require the GO button to be pressed). When GO is pressed, the control system is activated for 3 minutes (except
during fault of the STOP circuit –described above). When any function is pressed for more than 2 seconds, the
button is released for an extension of the GO period by another 3 minutes. When a function is pressed for less than
2 seconds, the original 3 minutes remains. After 3 minutes from the previously selected function, the control
electronics are deactivated and any further function is conditional on the GO button being pressed again. Pressing
the GO button is only valid if no other control button has been pressed at the same time. The use of the GO button
significantly limits the possibility of accidental movement of the bed during a fault or from unintentional pressing of
controllers.
3.2.2.4 Simultaneous pressing of any two buttons
In the event of uncontrollable movement of the bed caused by, for example, a broken button, the bed may be
stopped immediately using the STOP button or by pressing any key (it must be a button other than the button
causing the fault, however). If it is pressed for more than 1 second, the movement of the bed will be blocked and a
STOP code announced on the iBoard display (see table of STOP codes). Unblocking is automatic after all presses
have been released (including the error ones).
3.2.2.5 Double power switches
The power switches are doubled. The main switch is a relay type and controlled with a microprocessor. Switching it
on is conditional to the priority in hardware detection of commands from external controllers independent of the
microprocessor. This means that switching it on is dependent on of the functional buttons being pressed, which is
detected by a separate circuit independent of the microprocessor. This ensures safety even in a situation where the
microprocessor would activate a positioning function spontaneously as a result of an error. Switching it on is also
conditional on a fault-free connection of the STOP button and internal error diagnostics. The switching and
commutation of the electrical motor lifting units is safeguarded by relays. The second switch is a semi-conductor
type. It provides safety and speed control, as well as delayed switching and early interruption of current before the
relay contacts to protect their contacts and extend their life. The fault-free functioning of both switching elements is
monitored independently. A fault in these elements resulting in the electronics no longer being resistant to the first
error is signalled by a regular flashing of the mains LED. At this moment, only one movement of the bed is permitted,
after which this mode is signalled by a regular flashing of the mains and all locks LED. Further movement is possible
only after pressing the STOP button. After 5 individual movements the control unit is blocked permanently.
3.2.2.6 RC circuits –protection against shorting and spontaneous movement
An RC circuit is installed in all the analogue control elements connected to the ACP control unit (ACP, handset,
mobilift, foot controller). The value of the RC circuit resistor is 390 Ω. If the function is not active, the circuit
resistance is infinite as standard. When any function is pressed, the resistance of the circuit is 390 Ω, the function is
detected as valid and it begins. If a short is present in the circuit of the button, the resistance drops below 200 Ω, the
control unit detects the function as invalid and positioning does not occur. The RC circuit serves to prevent
spontaneous movements of the bed caused by a short in the wiring.

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3.2.2.7 Measuring leaks
The control unit is capable of measuring leaks in the individual controllers in a range of kΩ.
If resistance is detected in any of the controllers, it is signalled by all the lock LEDs flashing, the control unit always
permitting one movement of the bed after the STOP button is pressed. Information about the leak is recorded
simultaneously in the permanent memory of the control unit.
3.2.2.8 Positioning function locks
The positioning function locks have an electronic design and their current condition is always saved in an EEPROM
type memory. If they possess a fault, this condition is signalled by the relevant lock flashing its LED.
3.2.2.9 Detecting overload
While monitoring current drawn by the motor units, the electronics stabilise the maximum current and thus partially
limit start-up current spikes. If a constant current overload is detected, movement is halted after approximately 1
second.
3.2.2.10 Thermal protection
Built-in thermal protection signals temperature exceeded in the internal cooler and near the switching transistors
(approx. 100°C) during overload. A constant tone signals this condition. After an additional increase of
approximately 15°C, the switching power elements are disconnected (this makes positioning impossible), also
signalled by a constant tone. Information about the thermal overload is recorded simultaneously in the permanent
memory of the control unit.
3.2.2.11 Overheated main control box
If the temperature of the heat sink in the main control box reaches:
o85°C /185°F – The battery charging function disconnects.
o100°C / 212°F – The battery charging function disconnects, sound signalization occurs and
1 is added to LINIS (see LINIS chapter 7.1 –page 3)
o115°C / 239°F – The bed stops functioning and sound signalization occurs.
The bed becomes functional again after the main control box cools down.
3.2.2.12 Connectors
The inputs and outputs of the control unit have connectors of different type, meaning they may not be mixed. If
connectors of the same type (telephone ones) are used, mixing them up during assembly or servicing does not lead
to damage of the control unit.
3.2.3 Saved values
The control unit saves the following values
a) Statistical values, Overload values.Calibrated values
b) Records of previous events
c) All saved values are sent with currently measured values to the communication module interface (LAN or
Wi-Fi), from where they can be loaded to a PC via the web interface.
0 < 200 Ω- Short
≥1 kΩ - Leakage
390 Ω- OK

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Rechargeable battery3.3
Input/output voltage
24 V DC
Class
II IP65
Maximum charging time
24 hours
Lead hermetic rechargeable batteries 2x12V/1.2 Ah are connected in series in a plastic housing, protected by a 15 A
car fuse and current fuse. The plastic housing is inserted in a control unit box. The rechargeable batteries serve as
an emergency backup power source for the bed while it is disconnected from the mains electricity or during
transport. The rechargeable battery type has no memory effect and should not be run fully flat to increase their
lifespan.
3.3.1 Charging of rechargeable battery
The rechargeable batteries are charged intelligently from the control unit. The charging method used is called the
"Dual Level Float Charger" method (two charge levels, current limiting and automatic switching from charging to
maintenance mode).
Information about charging and modes of the rechargeable battery is signalled by the rechargeable battery’s LED as
follows:
Off
The rechargeable battery is charged.
(one exception may be a certain type of damage to
the rechargeable battery, which may occur due to its
age or unsuitable storage)
Flashes (on for short time, off for a longer time)
The rechargeable battery is charging.
If this type of signal occurs continuously over the long
term, it is necessary to replace the rechargeable
battery!
Flashes (on for a long time, off for a short time)
Low rechargeable battery voltage (either completely
flat or defective rechargeable battery). If this type of
signal occurs continuously over the long term, it is
necessary to replace the rechargeable battery!
Permanently on
Flashes rapidly
No rechargeable battery
(broken power lead, faulty rechargeable battery,
missing rechargeable battery faulty fuse)
The rechargeable battery is very flat, it is necessary to
replace or recharge it. Positioning of the bed is
Battery (S6011479ND)

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disconnected, except for CPR function.
Head side rails3.4
The head side rails are at the sides of the head section of the bed's mattress platform rear section. Depending on
the modifications to the bed, one part of the head side rails may include loudspeakers, signalling,
Nurse call button, or iBoards with lift controllers. The Nurse Call system is connected using an eight-core cable that
runs from the merging board inside the head side rail to a Mini DIN 8 connector on the backrest of the mattress
platform. From here it is connected to the Nurse Call module (each side rail separately). The control buttons of the
keypad are connected from the merging board by a cable inside the side rail to the iBoard. The iBoard module is
connected with the control unit (input 17 - left, input 18 right) via disconnection on the back rest (Mini DIN6)
3.4.1 i
Boar
d
The
iBoar
d
control panels constitute the main control element. They
provide for movement of the bed, configuration of bed functions, and control and display of the weighing system.
They are built into the outer side of both head section side rails, to which they are connected using six screws
covered by six adhesive blanking plugs. They are connected using 6-core cables with a miniature series connector
under a plastic cover. To replace, it is not necessary to remove the cabling from the side rail mechanism. The
connector is linked to the control unit via a Mini DIN 6 connector and cable (input 17 - left iBoard, 18 - right iBoard.
Alternatively, a cable connects the inner movement keypad of the head side rail via a merging board (if a keypad is
fitted to the bed). The iBoard panel detects these functions and passes them to the control unit digitally. The iBoard
contains a STOP button that immediately halts all movements of the bed when pressed if positioning is not permitted
or during failure of electrical components. The electronics of the system detect the correct connection of the STOP
button, whose wires are connected via cable jointly with the power and data conductors of the display. If one iBoard
is disconnected, the other is still functional. If both iBoards are disconnected, the STOP button is not functional and
the control unit activates into emergency mode (see chapter STOP button located on the LCD panel).
On the rear side of the panel is a production and technical label, and the Back accelerometer.

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The back accelerometer is a part of the both iBoards and is used to determine the tilt of the bed's backrest. When
the tilt of the backrest changes gradually due to gravity, the voltage in the accelerometer changes and the angle of
tilt is calculated. This information is sent to the control unit, which then displays it on the iBoard. The angle of tilt is
relative to the ground, which means that if the bed is not on a horizontal floor the backrest of the bed is tilted, the
angle of tilt of the floor (ground) is added to the angle of tilt of the frame.
Number
Description
1
Cable from Nurse Call
keyboard to iBoard
2
Nurse Call Cable
3
iBoard Cable

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Foot siderails3.5
3.5.1 Controllers in foot side rails
The control panels (left/right) allow the patient to set the position of the backrest and thighrest. Autocontour buttons
are also available. The keypads are backlit using integrated LEDs. Backlighting has 2 levels - lower (when GO
button is inactive) and higher (when GO button is active). Backlighting and positioning is inactive when the side rail is
dropped.
Controller commands are detected and digitally transferred via a "Y" cable to the control unit (input 23). The cables
of the side rail (from the EP module) can be disconnected at the edge of the mattress platform using Mini Din
connectors.
Siderail controls connection scheme

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Number
Description
1
iBoard Cable (Left, Right)
2
Nurse Call Cable (Left, Right)
3
Foot Siderail Control Cable
Siderail Cables (S6015159)

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Additional supervisor control panel (ACP)3.6
The additional supervisor control panel is an optional control element.
It is connected to the control unit via a 14-core cable terminated by a 13-pin DIN connector. The ACP panel is
connected to a Plug&Play adaptor on the side of the bed or directly to the control unit in position 1. If the bed is
equipped with iBoard panels, this controller does not contain a STOP button.
The supervisor control panel contains a lock to block individual functions of the control unit, indicator lights for the
mode and condition of the rechargeable battery, a selection of special functions, and settings for standard positions
of the bed.
Handset3.7
The handset is an optional controler of the bed. The handset is available in two versions, with illuminated buttons
or without (or as a variant with mattress platform lift - up/down). The handset button lighting is active if the bed is
connected to the mains. The functions of both handsets are identical. A cable with an 8-pin DIN connector is
connected to a Plug&Play adaptor, which is linked to the control unit at position 21. The controller has an RC unit to
detect short circuits.
Mobi-Lift®3.8
Mobi-Lift® handles are optional ancillary handles with a built-in height adjustment button. They serve as an aid for
improving patient safety when getting up. They allow the patient to raise and lower the mattress platform. They are
at the calf section on both sides, dropped only in one axis in the direction of the feet. There are two switches in the
head of the controller, and a cable terminated with an RJ11 connector runs from them. The wires are connected in
order from the top - brown, yellow, white. The brown wire is for positioning upwards, the yellow cable has an RC
module, and the white cable is for positioning downwards. When any button is pressed, the middle connection
(yellow, RC module) is also activated. Both controllers (left and right) have the same cable connection. Mobi-Lift®
controllers are connected directly to the control unit at positions No 24 (left) and 25 (right).
Up
Down
RC
Brown
Yellow
White
Up
Down

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Limit switches3.9
3.9.1 Left and right side rail limit switches
The limit switches serve with the control unit to detect the current position of the side rails. If the side rail is in the
up position, the limit switch is pressed via the mechanism of the side rails and a signal is sent to the control unit and
vice versa. Limit switches are separately connected –for each (head, foot) side rail. The control unit thus identifies
the positions of each side rail. The limit switches are connected to the control unit by a 6-pin RJ11 connector –Left
side rail + X-ray position 12, Right side rail limit switches in the position 13. The concept of the limit switches is to
determine that when the side rail is up, the given switch is closed (in the case of non-connection, broken wire, the
situation is detected as dangerous, i.e., side rail down)
ATTENTION: When connection of the limit switches to the control unit is reversed, the functions are also
reversed, meaning that when the side rail is down the control unit detects the side rail as being in the up position
and vice versa –in the case of lateral tilt, the bed does not behave as if the side rail were up, i.e., it does not stop at
a tilt of 7°.
3.9.2 X-ray cassette limit switch
The limit switch for the X-ray cassette allows whether the X-ray cassette is inserted into the compartment (it
eliminates the danger of collision of the back rest and frame of the mattress platform) to be detected. The limit
switch of the X-ray cassette is in the X-ray cassette compartment. A cable, also connected to the limit switches of the
left side rails, runs from the switch. In the connector, this switch has its own position –identified by the control unit.
3.9.3 Extension limit switch
The central extension limit switch allows the calf rest extension’s position to be detected. If the extension is moved
outwards, the switch is off (code 0). If the extension is moved inwards by half, the switch is closed (code 1).
Detection of the calf extension’s position is important to avoid a collision of the calf rest with the ground during
positioning.
The switch is connected via a 4-pin RJ 11 connector to the control unit at position 14.

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Calf accelerometer3.10
The calf accelerometer allows the tilt of the bed's calf rest to be determined. When the tilt of the calf rest
changes gradually due to gravity, the voltage in the accelerometer changes and the angle of tilt is calculated.
This information is sent to the control unit (input 27). Information about the tilt is displayed in the LINIS system. The
tilt angle of the calf rest is important during positioning in order to avoid collision of the mattress platform extension
with the ground.
Weighing module3.11
The weighing module allows the bed's mattress platform load to be calculated. Four weighing sensors
(tensometers) are connected to the weighing module. The tensometer constants, the gravitational constant, as well
as the overall calibration constant generated during calibration of the weighing scales are saved to the weighing
module. The weight of the load is calculated from tensometer data and calibration constants and sent digitally to the
control unit. The processed information is displayed on the iBoard. One part of the module is a speaker for the Bed
Exit Alarm (sound / space - 0.5 s/0.5 s). The weighing module is powered from the control unit by a 4-core cable with
RJ14 connector and is connected to position 15. The Nurse Call module is also powered from the weighing module.
The weighing module is inserted into a holder on the mattress platform frame of the bed at the foot section.