Seca 664 Instruction Manual

seca 664
Instruction manual and guarantee
D
GB
F
I
E

14
1. Congratulations!
In the seca 664 electronic wheelchair
scale, you have purchased a high-preci-
sion yet sturdy piece of equipment.
seca has been putting its experience at
the service of health for over 150 years
now, and as market leader in many coun-
tries of the world, is always setting new
standards with its innovative develop-
ments for weighing and measuring.
In accordance with national regulations, the
seca 664 electronic wheelchair scale is
used primarily in hospitals, doctors’ surger-
ies and in-patient nursing facilities.
The weight display can be switched be-
tween kilogrammes (kg), pounds (lbs) and
stones (sts). Weight is determined within a
few seconds.
The pre-Tare function allows you to store
the weights of three types of wheelchair.
This weight is automatically deducted in
the weighing operation.
The two fold-away ramps allow the wheel-
chair-user to get on and off in comfort.
The fold-away column allows the scale to
be stored upright to save space.
The scale is of a very sturdy construction
and will give you long and loyal service. It
is easy to operate and the large display is
easy to read.
The seca 664 can be moved on castors
and its low power consumption combined
with its rechargeable batteries mean it will
provide long, mobile service.
2. Safety
Before using the new scale, please take a little time to read the following safety instruc-
tions.
• Follow the instructions in the instruc-
tions for use.
•Keep the operating instructions and the
declaration of conformity in a safe
place.
• Do not drop the scale or subject it to
violent shocks.
•Lay the scale carefully in its position for
use.
•Secure the scale so that it does not fall
over when stored in the upright posi-
tion.
• When moving the scale in the upright
position, ensure that it does not fall
over.
•Be sure to use only the seca mains unit
supplied. Before plugging the mains
unit into a socket, check that the mains
voltage indicated on the mains unit
matches local mains voltage.
•When using the scale with a mains unit,
ensure that the supply cable is routed in
such a way as to exclude any type of
tripping hazard.
•Have repairs carried out only by author-
ised persons.

Model 664 15
GB
3. Before you start…
Unpacking
–Remove the packaging and place the
scale on a firm, level surface.
The scope of supply includes:
• Weighing platform
• Column with display head
• 2 mounting screws
• 2 serrated lock washers
• 1 Allen key
• 1 screwdriver
• 1 seca mains unit
• 1 set of operating instructions
Fitting the column
The column and display head are fitted to the weighing platform.
–Guide the connecting cable through
the opening.
–Place the column at the intended point
at the end of the rail and tighten up the
screws.
– Now connect the battery pack.
Connecting battery pack
–Carefully get the scale upright so that
the base of the scale is accessible.
–Connect the connecting cable from the
column to the electronics box.
–Undo the screws of the battery com-
partment and take off the cover.
–Connect the plug contacts to the bat-
tery pack inside.
–Close the cover and then turn the scale
back up the right way.

16
Power supply
The scale is powered by a mains unit and by a rechargeable batterie. The scale works
independently of the mains, which is very handy for mobile use.
The LC display and the evaluation electronics have a low power consumption – 2,000
weighing operations can be performed with a fully charged battery. Once battery voltage
is no longer adequate, the battery symbol first appears in the display to indicate
that battery power is dropping. If the batterie is not charged, battery voltage will ultimately
not be adequate for error-free measuring. In this case, bAtt appears in the display and
weighing is no longer possible.
The rechargeable batterie is charged by
the mains unit supplied. For this purpose,
the mains unit needs to be connected to
the mains for at least 24 hours.
4. Setting up and aligning the scale
– Place the scale on a level surface.
–Fold the column upwards. Secure the
column by tightening up the knurled
screw.
–Undo the locknuts using the four foot
screws.
–Align the scale by undoing the foot
screws. The air bubble in the spirit level
must be right in the centre of the circle.
– Then re-tighten the locknuts.
– Fold down the ramps required.
–Ensure that only the feet of the scale
are in contact with the floor. The scale
may not be in contact at any other
point.
Important!
The alignment of the base of the scale must be checked and corrected if neces-
sary every time the location of the scale is changed.
1.
2.
3.
Libelle
spirit level

Model 664 17
GB
5. Operation
Controls and displays
The controls and the display are on the display head on the column..
Switch scale on and off
press briefly sswitch between kg and lbs
hold down sswitch between kg and sts
in function menu sincrease value, scroll
press briefly sactivate hold function
hold down sset display to zero, activate/deactivate tare function
in function menu sdecrease value, scroll
Activating the pre-Tare function and Enter key for input data

18
Correct weighing
– Press the Start key.
se(a, 8.8.8.8.8. and 0.00 appear consecu-
tively in the display. The scale is then auto-
matically set to zero and ready to use
–If necessary, switch the weight display
(see page 18).
–Move your chair onto the scale and
keep still.
–Read the weighing result off the digital
display.
–If a load greater than 300 kg or 660 lbs
is placed on the scale, St0P appears in
the display.
–To switch off the scale, press the Start
key again.
Switching the weight display
The weight display can be switched between kilogrammes (kg) and pounds (lbs) or be-
tween kilogrammes (kg) and stones (sts).
–Switch on the scale using the green
Start key. Weight is initially displayed in
the last setting selected.
–To switch the weight display between
kilogrammes and pounds, press the
kg/lbs/sts key.
The kg or lbs display lights up.
–To switch weight display between
pounds and stones, hold down the
kg/lbs/sts key for approx. 2 seconds.
– The lbs or sts display lights up.
Automatic switch-off/economy mode
The scale automatically detects whether it is being operated on rechargeable batteries
alone or whether it is connected to the mains.
– With rechargeable battery operation: automatic shut-down after 5 minutes.
– With mains operation: shut-down only via keypad.

Model 664 19
GB
Taring weight display (TARE)
The Tare function is very useful if an additional weight, e.g. that of a wheelchair, is to be
ignored for weighing purposes.
Proceed as follows:
– Press the green Start key.
–First place the additional weight (e.g.
the wheelchair) on the scale and acti-
vate the Tare function by pressing and
holding the HOLD/TARE key.
The display is reset to zero. 0.0 appears in
the display. The note “NET” appears.
–Now move the patient and the wheel-
chair previously weighed onto the
scale.
The scale determines the patient’s weight.
You can now perform as many weighing
operations as you like.
–Hold the key down again to deactivate
the Tare function; the scale is then back
in normal weighing mode and the tare
value has been erased.
–The tare value is likewise erased by the
scale being switched off.
Store weight value (HOLD)
You can also continue displaying the weight determined once the load has been removed.
This makes it possible to look after a patient first, before having to note the weight.
–Press the HOLD/TARE key whilst the
load is on the scale.
“HOLD” appears in the digital display. The
value is stored until the scale switches off
automatically.
–The HOLD function can be switched off
by pressing the HOLD key again.
0.0 appears in the display if the scale has
no load on it, otherwise the current weight.
The “HOLD“ display vanishes.
Note:
The HOLD and TARE functions can also be used simultaneously.

20
Weighing with pre-Tare
If the pre-Tare function is activated, a stored weight value is deducted from the currently
measured weight. This function is useful, for example, if the weight of a wheelchair is not
to be displayed.
Three different tare weights (wheelchair weights) can be stored.
– Press the Start key.
se(a, 8.8.8.8.8. and 0.00. appear
consecutively in the display. After that,
the scale is automatically set to zero
and ready for operation.
– Press the FUNC key.
The last function used appears in the
display.
An arrow on the left-hand side of the
display indicates which memory is set.
–Use the arrow keys to select the de-
sired memory for storing the additional
weight or where a weight may already
be stored.
–Then press FUNC. In the display you
will see the tare value from the memory.
–You can use the arrow keys to adjust
the value in increments according to
the graduations displayed.
–Once the correct value is set, press the
FUNC key again.
The pre-Tare function is now activated.
–Move onto the scale in the wheelchair
associated with that memory. Read the
weighing result off the digital display.
–Press an arrow key if you would like to
see the current weight value briefly.
–To return to normal weighing mode,
press the FUNC key.
–To switch off the scale, press the Start
key again.
Tip: note weight and the memory in
which the weight is stored on your
wheelchairs.

Model 664 21
GB
Setting damping
Damping is useful for reducing weight determination malfunctions (due to patient move-
ments, for example). The stronger the damping, the more slowly the weight display re-
acts. You can set damping to suit requirements.
–Press the FUNC key and keep it de-
pressed for 2 seconds.
FIL and the current setting appear in
the display:
0 = slight damping
➞fast determination of weight
1 = average damping
➞normal determination of weight
2 = strong damping
➞slow determination of weight
–Press an arrow key if you want to chan-
ge the set value.
–Press the FUNC key again to store the
displayed value. The scale is then back
in normal weighing mode.
The settings are retained even once
the scale is switched off.
6. Storing the scale
The scale can be stored upright to save space.
–Undo the knurled nut on the hinge of
the column.
–Pull out the knurled screw and fold over
the column.
– Re-engage the knurled screw.
–You can now prop the scale up on the
column.
– The scale can now be moved.
The scale can be placed on the bottom rail
for short-term storage. Secure the scale
so that it does not fall over when stored in
the upright position.
7. Cleaning
Clean the rubber surface and the housing as required using a domestic cleaning agent or
commercially-available disinfectant. Follow the manufacturer’s instructions.
Under no circumstances use abrasive or acid cleaners, white spirit, benzene or the like for
cleaning. Such substances can damage the high-quality surfaces.

22
8. What do I do if…
… no weight display comes on?
– Is the scale switched on?
– Check the mains connection and the connection of the battery pack
– Is the plug contact on the scale correctly connected?
– Is the plug contact for connecting the display to the scale correctly connected?
… 0.0 does not appear before the weighing operation?
–Press the Start key again – there must not be any load on the scale – and only its feet
should be in contact with the floor.
… one segment is illuminated constantly or not at all?
– The relevant segment has a fault. Inform Servicing.
… the display shows ?
– Battery voltage is dropping. Charge the rechargeable batteries in the next few days.
… batt appears in the display?
–The rechargeable battery is so severely discharged that weighing is no longer possible.
Recharge the battery.
… St0p appears in the display?
– Maximum load has been exceeded.
… the display flashes?
–If you have just activated the Hold or Tare function, please wait until the scale has de-
tected a steady weight value. The display will then stop flashing.
–If there has been no activation of a function beforehand, remove the load from the scale
and wait until 0.0 is displayed, then weigh again.
… the display appears?
–The ambient temperature of the scale is too high or too low. Place the scale in an
ambient temperature between +10 °C and +40 °C. Wait about 15 minutes for the sca-
le to adapt to the ambient temperature and then weigh again.
… the display Eand a number appear?
–Switch off the scale with the Start key and start the scale again. The scale will then
work normally again.
If this is not the case, interrupt the power supply by briefly removing the rechargeable
battery. If this measure is equally unsuccessful, inform the Service department.

Model 664 23
GB
9. Maintenance
Your seca scale leaves the factory with an accuracy greater than ±0.15 %. To ensure that
this degree of accuracy is maintained, the product must be carefully set up and regularly
serviced. Depending on frequency of use, we recommend servicing at intervals of 3 to 5
years. Please note that a qualified servicing agent should be used for this. If you are in doubt,
seca Customer Service will give you more information.
10.Technical data
Dimensions: (width, length, height)
Scale in position for use, ramps folded out: 1102 x 1150 x 911 mm
Scale in position for use, ramps folded away: 1102 x 985 x 911 mm
Scale in upright position: 193 x 986 x 1102 mm
Weight approx. 30,3 kg
Temperature range +10 °C to +40 °C
Accuracy greater than ±0,15 %
seca 664, no. 1321 009 / -109
Weighing range 0 to 300 kg / 0 to 660 lbs /
0 to 47 sts
Graduations 100 g / 0.2 lbs
seca 664, no. 1321 139 (USA)
Weighing range 0 to 660 lbs / 0 to 300 kg
Graduations 0.1 lbs / 100 g
Colour silver grey/black
Power supply: mains unit and built-in rechargeable
battery pack
11.Spare parts and accessorie
Power supply
Model-dependent mains unit:
Description: plug-in mains unit
230 V~/50 Hz/12 V=/130 mA
seca spare part no. 68-32-10-252
Designation: USA mains unit
120 V~/60 Hz/12 V=/150 mA
seca spare part no.: 68-32-10-259
Designation: convertible desk-top mains
unit
115 V~/230 V~/50 Hz/9 V=/350 mA
seca spare part no.: 68-32-10-243
Rechargeable batteries:
Description: pack of 6 rechargeable bat-
teries, NiMH
seca spare part no.: 68-22-12-721

24
12.Disposal
Rechargeable batteries
Do not throw old rechargeable batteries
into the domestic refuse! Ensure that re-
chargeable batteries are properly dis-
posed of at local collection points.
Disposing of the scale
If the scale can no longer be used, the re-
sponsible waste disposal association will
be glad to advise you on the measures
necessary to dispose of it properly.
13.Warranty
A two-year warranty from date of delivery
applies to defects attributable to poor ma-
terials or workmanship. All moveable parts
- batteries, cables, mains units, recharge-
able batteries etc. - are excluded. Defects
which come under warranty will be made
good for the customer at no charge on
production of the receipt. No further
claims can be entertained. The costs of
transport in both directions will be borne
by the customer should the equipment be
located anywhere other than the custom-
er’s premises. In the event of transport
damage, claims under warranty can be
honoured only if the complete original
packaging was used for any transport and
the scale secured and attached in that
packaging just as it was when originally
packed. All the packaging should there-
fore be retained.
A claim under warranty will not be hon-
oured if the equipment is opened by per-
sons not expressly authorised by seca to
do so.
We would ask our customers abroad to
contact their local sales agent in the event
of a warranty matter.