Seca 750, 761, 760, 762 Manual

DESCRIPTION OF DEVICE

Intended use

The mechanical flat scale supports physicians in decision-making regarding diagnosis or therapy, based on the patient's weight or weight changes.

User qualification

The device may only be used by persons with sufficient expertise.

Patient target group

The scale is intended for persons of any age who can stand independently on the scale and who do not exceed the maximum weight capacity of the scale.

Contraindications

No contraindications are known.

Clinical benefit

The mechanical flat scale supports physicians in decision-making regarding diagnosis or therapy, based on the measured weight.
By that, the mechanical flat scale only provides an indirect clinical benefit.
The physician must perform additional examinations for an accurate diagnosis.

Functional description

With a mechanical dial scale weight is calculated via a load lever system.
Before weighing takes place, the zero point can be manually reset each time with the adjusting wheel.
Verified scales are supplied with a kg scale.
Non-verified scales are supplied with a kg, lbs, kg/lbs, or a kg/sts scale depending on the model.

OVERVIEW

Controls

Item	Control	Function
1	Adjusting wheel	For adjusting the display
2	Protecting ring	Protects the pointer and dial Can be removed for cleaning (seca 760/761/762)
3	Transport lock	Prevents movement between the weighing platform and the lower part of the housing during transport Can be used as a wall spacer

Labels

Markings on the device and on the type plate
Text/symbol	Meaning
	Name and address of manufacturer, date of manufacture
UDI	Unique Device Identification (product identification number as per Directive (EU) 2017/745)
	Article number
	Serial number
ProdID	seca product identification number
Approval Type	Type designation of design approval
	Follow instructions for use
e	Value in units of mass (verified models) Used to classify and verify a scale
d	Value in units of mass (non-verified models) States the difference between two consecutive display values
	Class IIII scale in accordance with Directive 2014/31/EU (verified models)
	Unit used for scale (here: kg) Part of scale below the minimum capacity: For technical reasons no meaningful measuring results are possible in this range.
	Medical device in accordance with Regulation (EU) 2017/745
Markings on the packaging
Symbol	Meaning
	Protect from moisture
	Arrows indicate top of product Transport and store in an upright position
	Fragile, do not throw or drop
	Permitted min. and max. temperature for transport and storage
	Permitted min. and max. humidity for transport and storage
	Permitted min. and max. air pressure for transport and storage
	Open packaging here

STARTING UP DEVICE

Removing locking pin

1. Move the locking pin on the underside of the housing through a quarter turn counter-clockwise.
   
2. Pull the locking pin out.
   

NOTE

• Put the locking pin in a safe place for subsequent transport of the scale.

Removing transport lock

• Remove the transport lock from the lower part of the housing.
  

NOTE

• Put the transport lock in a safe place for subsequent transport of the scale.
• You can use the transport lock as a wall spacer (→ Fitting wall spacer).

Fitting wall spacer

If you wish to position the scale close to a wall, seca recommends using the transport lock (see section "Removing transport lock") as a wall spacer. This stops the weighing platform from touching the wall and the measuring result from being incorrect.

1. Position the transport lock as shown in the adjacent drawing.
   
2. Attach the transport lock to the lower part of the housing.
   

Setting up device

Faulty measurement as a result of devices being set up incorrectly
Soft floors, such as wooden boards, give under the patient's weight and falsify the measuring result. Incorrect ambient conditions or lack of alignment lead to measurement errors.

• Select a setup location with a level, stable floor in order to achieve precise measuring results.
• Use the device only in the intended ambient conditions outlined in the section entitled "Technical data".
• Ensure the device is aligned before using it and every time it changes location.

• Place the device on a firm, level surface.

WEIGHING

Personal injury/faulty measurement

• Before using the device each time, perform a function check as described in the corresponding section of these instructions for use.

Adjusting display

To obtain meaningful measured values, you must check before every use that the pointer of the scale reads "0".

1. Ensure that there is no load on the scale.
2. Check the current position of the pointer.
3. Move the adjusting wheel so that the pointer reads "0".
   
   • Turn clockwise: Pointer moves counter-clockwise
   • Turn counter-clockwise: Pointer moves clockwise

Weighing a patient

Patients can be injured if they fall
People with restricted mobility can fall when they try to step on or off the scale.

• Support people with limited mobility when they step on and off the scale.
• Only use this scale for patients who are able to stand on their own when being weighed.

1. Make sure that the pointer of the scale reads "0".
2. Ask the patient to step onto the scale and keep still.
3. Read off the measuring result.
   NOTE
   If your scale displays measured values in "lbs" only, you can use the conversion tool to convert measured values to values in kg (→ Conversion tool).
4. Ask the patient to step off the scale.

HYGIENE TREATMENT

Risk of infection

• Subject the device to a hygiene treatment at regular intervals as described in this section.

NOTICE!
Damage to device
Unsuitable cleaning agents and disinfectants may damage the sensitive surfaces of the device and lead to transparent components becoming clouded.

• Do not use aggressive or abrasive cleaning agents.
• Do not use organic solvents (e.g. white spirit or petroleum spirit).

Cleaning

Cleaning housing

• If required, moisten a soft cloth with a mild soapy solution and wipe the device over with it.

Cleaning protecting ring and scale (seca 760/761/762)
You can take the protecting ring off the weighing platform to clean the inside of the protecting ring and the scale.

1. Turn the protecting ring counter-clockwise.
   
2. Take the protecting ring off.
   

NOTICE!
Damage to device
When the protecting ring has been taken off, the pointer and scale of the device are freely accessible. If these parts are damaged, meaningful measuring results will not be possible.

• Check that the pointer and scale have not been damaged during cleaning.

3. Clean these parts with a soft cloth moistened with a mild soapy solution:
   • Scale
   • Inside of protecting ring
4. Put the protecting ring back on the housing.
   
5. Turn the protecting ring clockwise to re-secure.
   

Disinfecting

1. Disinfect the device at regular intervals with a disinfectant suitable for sensitive surfaces and acrylic glass (e.g. 70% ethanol).
2. Follow the instructions for use for the disinfectant.
3. Disinfect the device as follows:
   • Moisten a soft cloth with disinfectant and wipe down the device with it.
   • Comply with the intervals, see table:

Interval	Component
Before every measurement with direct skin contact	Weighing platform
After every measurement with direct skin contact	Weighing platform
As required	Protecting ring and viewing window

Sterilizing

The device must not be sterilized.

FUNCTION CHECK

• Perform a function check before each use.

A complete function check includes:

• A visual inspection for mechanical damage
• A test of the alignment of the device
• A visual and function check of the display elements
• A function check of all the controls shown in the section entitled "Overview"
• A function check of the optional accessories

If you find faults or deviations during the function check, first try to remedy the fault with the aid of the "Troubleshooting" section in this document.

Personal injury
If you find faults or deviations during the function check which you are unable to remedy with the aid of the "Troubleshooting" section in this document, you must not use the device.

• Have the device repaired by seca Service or an authorized service partner.
• Follow the section entitled "Servicing" in this document.

TROUBLESHOOTING

If faults occur when operating the device, first attempt to remedy them yourself using the following table. If the fault persists, contact seca Service or an authorized service partner.

Fault	Cause	Remedy
Scale shows no weight although there was a load on it	The device is not ready for use	Remove transport lock
The unit does not show a plausible weight value	Before weighing pointer does not read 0	Adjust display
	Force shunt: scale is e.g. touching a wall, or patient is supporting his/her weight against the wall	Move scale away from wall Use transport lock as wall spacer Ask patient to stand on the scale unaided

SERVICING

Non-verified scales

The product needs to be set up carefully and serviced regularly. Depending on how frequently the product is used, seca recommends servicing at intervals of 3 to 5 years.

Faulty measurements as a result of poor servicing

• Have servicing and repairs carried out exclusively by seca Service or an authorized service partner.
• You can find your local service partner at www.seca.com.

Verified scales

Faulty measurements as a result of verification being performed poorly or not at all

• Have verification performed only by authorized persons.
• Always have verification performed if one or more quality seals are damaged.

seca recommends having your device serviced prior to verification.

Faulty measurements as a result of poor servicing

• Have servicing and repairs carried out exclusively by seca Service or an authorized service partner.
• You can find your local service partner at www.seca.com.

TECHNICAL DATA

General technical data

Dimensions seca 750
Depth	477 mm
Width	317 mm
Height	117 mm
Dimensions seca 760/761/762
Depth	470 mm
Width	303 mm
Height	118 mm
Net weight	approx. 3.5 kg
Temperature range
Operation	+10°C to +40°C (50°F to 104°F)
Storage	-10°C to +65°C (14°F to 149°F)
Transport	-10°C to +65°C (14°F to 149°F)
Air pressure
Operation	700 – 1060 hPa
Storage	700 – 1060 hPa
Transport	700 – 1060 hPa
Humidity
Operation	30% – 80%, no condensation
Storage	0% – 95%, no condensation
Transport	0% – 95%, no condensation
Medical device in accordance with Regulation (EU) 2017/745	Class I with measuring function

Weight measurement

seca 761
Verification in line with Directive 2014/31/EU		Class IIII
Maximum capacity		150 kg
Minimum capacity		10 kg
Graduation		1 kg
Zero adjustment range		20 kg
Accuracy on initial verification:	10 kg to 50 kg	± 0.5 kg
	50 kg to 150 kg	± 1 kg
seca 750/760/762
Maximum capacity		150 kg / 320 lbs / 23 sts
Minimum capacity		10 kg / 20 lbs / 1 sts
Graduation seca 750/760		1 kg / 1 lbs / 1 lbs
Graduation seca 762		0.5 kg / 1 lbs / 1 lbs
Zero adjustment range		20 kg / 45 lbs / 3 sts
Accuracy:	10 kg to 80 kg	± 1 kg
	80 kg to 150 kg	± 1.25%
	20 lbs to 180 lbs	± 2.2 lbs
	180 lbs to 320 lbs	± 1.25%
	1 sts to 12 sts	± 0.2 sts
	12 sts to 23 sts	± 1.25%

Conversion tool

On some models measured values are shown only in "lbs". With these models you can use the following conversion tool to convert measured values to values in kg.

SAFETY INFORMATION

Safety information in these instructions for use

Used to identify an extremely hazardous situation. If you fail to take note of this information, serious irreversible or fatal injuries will occur.

Used to identify an extremely hazardous situation. If you fail to take note of this information, serious irreversible or fatal injuries may result.

Used to identify a hazardous situation. If you fail to take note of this information, minor to moderate injuries may result.

NOTICE!
Used to identify possible incorrect usage of the device. If you fail to take note of this information, you may damage the device, or the measuring results may be incorrect.

NOTE
Includes additional information about use of the device.

Basic safety information

Handling device

• Please take note of the information in these instructions for use.
• Keep the instructions for use in a safe place. The instructions for use are a component of the device and must be available at all times.
• In the interest of patient safety, you and your patients are obliged to report serious events that occur in connection with this product to the manufacturer and to the authority responsible in your country.

Patient hazard, damage to device

• Have servicing carried out regularly as described in the relevant section of this document.
• Technical modifications may not be made to the device. The device does not contain any user-serviceable parts. Only have servicing and repairs performed by an authorized seca service partner. You can find your local service partner at www.seca.com.
• Use only seca original accessories and spare parts, otherwise seca will not grant any warranty.

Avoiding infections

Risk of infection

• Before and after every measurement, wash your hands to reduce the risk of cross-contamination and nosocomial infections.
• Should the patient have contagious diseases, subject the device to a hygiene treatment as described in the relevant section of these instructions for use immediately afterwards.
• Ensure that the patient does not have any open wounds or infectious skin alterations which may come into contact with the device.
• Subject the device to a hygiene treatment at regular intervals.

Avoiding injuries

Injury from falling

• Ensure that the device is steady and level.
• Support people with limited mobility when they step on and off the scale.
• Only use this scale for patients who are able to stand on their own when being weighed.
• Ensure that the patient does not step directly onto or off the edges of the weighing platform.
• Ensure that the patient steps onto and off the weighing platform slowly and safely.

Danger of slipping

• Ensure that the weighing platform is dry before the patient steps onto it.
• Ensure that the patient has dry feet before stepping onto the weighing platform.
• Ensure that the patient steps onto and off the weighing platform slowly and safely.

Preventing damage to device

NOTICE!
Damage to device

• Do not drop the device.
• Do not subject the device to shocks or vibrations.
• Perform a function check before each use as described in the corresponding section in this document. Do not operate the device if it is not working properly or is damaged.
• Use only cleaning agents and disinfectants that match the details in the section entitled "Hygiene treatment".
• For scales: Ensure that maximum capacity is not exceeded.

Handling measuring results

Patient hazard
To prevent misinterpretations, measuring results for medical purposes must only be displayed and used in SI units (kilograms/grams, meters/ centimeters). Some devices have the option of displaying measuring results in different units. This is purely an additional function.

• Only use measuring results in SI units.
• The user takes sole responsibility for the use of measuring results in non-SI units.
• If your scale is unable to display non-SI units, you can use the conversion tool in this document.

NOTICE!
Inconsistent measuring results

• Before you save and continue using measured values determined using this device (e.g. in seca software or in an EMR system), ensure that the measured values are plausible.
• If measured values have been sent to seca software or to an EMR system, ensure before continuing to use them that the measured values are plausible and assigned to the correct patient.

Handling packaging material

Risk of suffocation
Packaging materials made of plastic film (bags) present a risk of suffocation.

• Store packaging material out of the reach of children.
• If the original packaging material is no longer available, only use plastic bags with safety holes to reduce the risk of suffocation. Use recyclable materials if possible.

NOTE
Store the original packaging material for future use (e.g. returning for servicing).

seca.com

Documents / Resources

References

• Medical measurement systems and scales · seca
• Medical measurement systems and scales · seca

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