Sartorius mc1 Installation And Operating Instructions Manual
3
Sartorius
Research Series
Electronic Semi-Micro and
Analytical Balances
Installation and Operating Instructions
WRC 6001-e94013
2
1 Large draft shield cover
2 Small draft shield cover
3 Exterior draft shield element, semi cylindrical
(can be moved by hand)
4 Interior draft shield door, semi cylindrical (can be
moved by motor control or by hand)
5 Interior weighing chamber draft shield (depending
on the balance model)
6 Protective ring
7 Weighing pan
8 Shield disk
9 Levelling food
10 Level indicator
11 Display unit
12 AC jack
13 Menu access switch
14 Data interface port
15 Terminal for connecting an equipotential bonding
conductor
16 Lug for attaching the antitheft locking device
17 Metrological label (only *D1-Models)
18 Manufacturer's label
19 Weight and Information display
20
- function key
21
- function key
22
- draft shield function key
23
- Print key (data transfer)
24
- Tare control
25
- toggle key
26
- Info key
27
- ON/Off key
28
- key
3
Contents
Page
Warranty 4
Storage and Shipping Conditions 5
Transporting the Balance 5
Equipment Supplied 6
Installation instructions 7
Ambient Conditions 7
Getting Started 8
Adjusting the Exterior Draft 8
Adjusting the Swivel-Mounted Display Unit 8
Connecting the Balance to Line Voltage 9
Safety Precautions 10
Information on Radio-Frequency Interference 10
Connecting Electronic Devices (Peripherals) 10
Information on Weighing
Electro statically Charged Samples 11
Levelling the Balance Listing the Level Indicator 11
How to Operate the Balance 12
Turning the Display On and Off (Standby Mode) 13
Self-Test 13
Important Note for Automatic
Operation with a Robot 13
Opening and Closing the Draft Shield Door 14
Weighing 16
Taring 16
Weighing Range Structure 17
Weighing in the IQ-Mode ™ 18
(Load-Dependent Readability)
Mass Unit Conversion by Toggling 19
Page
Calibration and Linearization 20
Fully Automatic Calibratio n 21
Internal Calibration 22
External! Calibration 23
Calibration Test 24
Internal Linearization 25
For additional functions if you want to
do more than "just weigh," see
"Part III: Balance Operating Menu" and
"Part IV! Application Programs"
Data Interface 26
Interfacing Devices with the Balance 27
Below- Balance Weighing 28
How to Fasten the Antitheft
Locking Device 28
Troubleshooting Guide 29
Care and Maintenance 30
Cleaning the Balance H ousing
and the Draft Shield 30
Cleaning the Weighing Chamber 30
Safety Inspection 31
Safety Certificate 32
4
With this Sartorius Balance, you have acquired a high-quality electronic weig hing
instrument that will ease your daily workload.
Please read these Installation and operating instructions carefully before you begin to operate your new balance.
In "Part l: Installation and Operating Instructions," it is assumed that you are using the factory-set menu codes.
Warranty
Do not miss out o n the benefits of our full warranty.
Please complete the warranty registration card, indicating the date of Installation,
and return the card to your Sartorius Office or dealer.
5
Storage and Shipping Conditions
Allowable sto rage temperature: +5 °C. ..+40 °C
+41 °F...+104 °F
The packaging has been designed to ensure that the balance will not be damaged
even if it is dropped from a height of 80 cm (about 32 inches).
After unpacking the balance, please check it immediately for any visible damage
as a result of rough h and 1during shipment.
lf this is the case, proceed as directed in the section entitled "Safety inspection."
Save all parts of the packaging and the box for your balance to avoid damage
during transportation. You may ship your balance only in the complete original
Standard packaging supplied. Before you pack your balance, unplug all connected cables to prevent damage.
Do not expose the balance unnecessarily to extreme temperatures, moisture,
shocks, blows or vi brat Ions.
Transporting the Balance
To transport the balance, lift it by the housing base using both hands.
Do not lift it by the display unit or by the draft shield!
6
Equipment Supplied
The equipment supplied includes the components listed below:
—
Balance
—
Power supply
—
Weighing pan
—
Shield disk
—
Protective ring
—
Interior weighing chamber draft shield
(depending on the balance model)
—
2 draft shield covers
—
Dust cover for the draft shield and balance housing
—
Dust cover for the display unit
7
Installation Instructions
Ambient Conditions
Unfavourable ambient conditions may affect the weight readouts.
Therefore, choose a suitable place to set u p your balance. lt should not be exposed to the following:
—
Extreme heat radiation
—
Drafts
—
Extreme- vibrations
—
Aggressive chemical atmospheres
Set up your balance on a sturdy fable or on a wall console (see "Accessories" in
"Part l): Product Data Sheet").
Do not expose the balance to extreme moisture over long pe rio d s. Mo isture in the
air can condense on the surfaces of a cold balance whenever it is brought to a
substantially warmer place. lf you transfer the balance to a warmer area, make
sure to condition it for about 2 hours at room temperature, leaving it unplugged.
Afterwards, if you keep the balance connected to AC power, the continuous positive difference in temperature between the inside of the balance and the outside
will practically rule out the effects of moisture condensation.
You can adapt the balance to your specific requirements and to the ambient conditions simply by changing the code settings in the balance operating menu. For
more information, t urn to "Part III: Balance Operating Menu."
8
Getting Started
Place the components listed below inside the weighing chamber one at a time in
the Order given:
- shield disk (8)
- weighing pan (7)
- protective ring (6)
- interior weighing chamber draft shield (depending on the balance model) (5)
Place the small draft shield cover (2) on top of the semi cylindrical interior draft
shield door (4).
Adjusting the Exterior Draft Shield Element
The draft shield consists of two semi cylindrical dements, one of which functions as
a door. Turn the exterior draft shield element (3) by the riffled part on the bottom
to the position you desire, That way, you will have the opening located exactly
where it is most convenient for you. When adjusting the exterior element, be sure
to shield the weighing chamber from you r breath and the warmth of your hands
(see diagram on the left in addition).
Depending on your application, you can define the menu code so that the inferior
draft shield door (4) is opened by motor or by hand (see pp. 14).
Adjusting the Swivel-Mounted Display Unit
Move the swivel-mounted display unit (11) around the base of the draft shield to
adjust it to the position you desire (+/- 85°).
9
Connecting the Balance to Line Voltage
The balance is energized by a power supply. Make sure that the voltage rating
printed o n this unit is identical to your local line voltage .
lf the voltage specified on the label or the plug design of the power supply does
not match the rating or Standard you use, please contact your Sartorius Office or
dealer.
The power supply is suitable for installation as stationary equipment. To use a
main feeder cable from the ceiling or to mount a CEE plug, you will have to make
arrangements inside your facilities for installation of such cable equipment by a
certified electrician.
Important Note
Use only original Sartorius Power Supplies identified by the Sartorius label. Use of
power supplies from other manufacturers, even if these units have an approval
identification marking from a national testing laboratory, requires the consent of
an authorized Sartorius service technician.
To operate your balance using an external rechargeable battery, pack, see "Accessories" in "Part II: Product Data Sheet.".
Detailed information on additional options for powering the balance is available
in our Service Information bulletin, no. 15/88 (fore example, using local! extralow voltage).
Plug the cord of the power supply into the AC jack on the balance, Then insert the
plug of the power supply in a wall outlet.
10
Safety Precautions
The power supply rated to Class 2 can be plugged into a wall outlet without taking any additional safety precautions. The pole of the Output voltage is connected
to the balance housing, which ca n b e grounded for Operation.
The interface (see "Interfacing Devices" on page 28 in addition) is also electrically
connected to the balance housing (ground).
Information on Rad io-Frequency Interfere nce:
Warning!
This equipment generates, uses and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause interference to radio communications.
It has been tested and found to comply with the limits for a class A computing device pursuant to Subpart J of Part 15 of FCC rules, which are designed to provide
reasonable. protection against such interference, when operated in a commercial
environment Operation of this equipment in a residential area is likely to cause interference, in which case the user at this own expense will be required .to take
whatever measures may be required to correct the interference.
Connecting Electronic Devices (Peripherals)
Make sure to unplug the balance from the power
supply before you connect or disconnect a
peripheral device (printer or PC) to or from the
interface port. Safety Precautions
11
Information on Weighing Electro statically Charged Samples
Problems with static electricity can occur in environments with low humidity. To
avoid these problems when you use your balance in such an area, wipe down the
entire draft shield on both the inside and outside with a commercially available
antistatic agent. In addition, the glass draft shield interior has a conductive coating.
There is a terminal (15) for connecting an equipote ntial g ro unding conductor to
the frame (housing) on the rear side of the balance. This is used for additionally
grounding a peripheral device connected to the balance (for example, a vibrating
spatula). The terminal is designed for single grounding wires up to .25" Standard
gauge or 6 mm
2
- and for .18" Standard gauge or 4 mm2 stranded wires.
lf you need to use electro statically charged glass or plastic Container s with a relatively large diamet er, you should utilize our antist a t ic pan (155 mm – see "Acce s sories" in "Part II: Product Data Sheet").
Levelling the Balance Using the Level Indicator
At the point of use, level the balance using the levelling feet (9) so t hat the air
bubble is centered within the circle of the level indicator (10).
To level the balance .using the level Indicator as a guide:
Extend the levelling feet (turn clockwise) to lift the balance.
Retract the feet (turn counter clockwise) to lower the balance.
12
How to Operate the Balance
After initially connecting the balance to line power (or after a relatively
long power outage), allow for at least 2 hours' warmup.
Working with the Research Series Balance requires a smooth, uninterrupted technique.
The weight display shows the following special codes for your information:
OFF
The balance was disconnects from line power (power failure or outage; the balance was reconnected to line power).
0 (standby)
The display has been turned off by the
key (27), and the balance is now in the
ready-to-operate mode and does not require warmup.
(busy)
Once you turn on the balance, the
symbol is displayed until you press a key.
During Operation, this symbol indicates that the balance processor is still busy
processing s function and will not accept any other commands to perform functions at this time.
CAL
I
The balance has internal calibration weights and can be calibrated with the
key (for the "Quick-CAL” function, see also page 22).
, R1 or R2
The number in the R code identifies the particular weighing range you have selected.
Symbol for the application selected (in this case, the weighing mode and toggling
among the weighing ranges).
13
Important Note
lf the
symbol flashes, this means that the balance wants to self-calibrate. You
do not need to interrupt your weighing procedure, because the balance will wait
until it detects that you have stopped weighing for one complete minute.
Afterwards, the balance will perform fully automatic infernal calibration. The
symbol will flash until the balance Starts this fully automatic procedure on its own
or until you activate one of the calibration functions by pressing a key (see p p.
22).
Turning the Display On and Off (Standby Mode)
Press the
key (27) to turn the display on or off.
Self-Test
After the balance has been turned on, an automatic self-test of the balance's electronic circuitry is performed, and the draft shield closes automatically.
It ends with a readout of "0.00000 g" or "0.0000 g" ( depending on your b a lance model or the display mode selected).
Important Note for Automatic Operation with a Robot
To be on the safe side for automatic Operation of the -balance with a robot, you
should turn off the full y a utomatic draft shield functi on (see "Part III: Balance Op erating Menu"). Otherwise, if a power outage occurs and the balance is automatically restarted, the robot arm may accidentally hit the draft shield as it is closing.
14
Opening and Closing the Draft Shield Door
If you are loading small objects, open the draft shield
only as far as is absolutely necessary for your
application. This reduces the amount of draft so
your balance will stabilize faster than it normally
would when the draft shield is wide-open.
You have several options for operating the interior draft shield door (4):
– Semi-Automatic Mode (Aperture Angle s 170°) –
Press one of the keys labeled
(22) to have the draft shield door opened or
closed by motor.
The interior draft shield door moves slowly the first time it is opene d after connecting the balance to AC power.
– Semi-Automatic with an Aperture Angle of 10° to 140° –
By a "self-teaching function," the draft shield door can "learn" to open automatically to a user-define d aperture angle from 10° to 140°:
To define this angle, move the interior draft shield door (4) to the desire d Po sitio n.
15
Press the
key (22] to have the draft shield door closed by motor.
While closing, the door moves slowly. The previously adjusted aperture angle is
stored in the process.
Now if you press the
key (22) again, the draft shield door will open at a faster
speed to the Position you selected.
You can load and remove a tare container with a diameter exceeding the aperture angle, without having to change the stored aperture setting. To do
so, press the
key (22) for approx. 2 seconds.
This will cause the draft shield door to open automatically as far as it will go
(170°).
You can always change the aperture angle by manually adjusting the position of
the draft shield door.
lf you want the draft shield door (4) to open completely (170° C) after you p re s s
the
key, just open the door manually as far as it will go.
Important Note
The aperture angle remains stored even after you have turned off the display u
sing the
key.
A stored aperture setting will not be erased until you unplug the balance from AC
current.
– Manual Mode –
Of course, you can also open and dose the draft shield door (4) by hand.
16
Weighing
Place your sample on the weighing pan (7) to determine the weight, and dose the
draft shield door (for example, by pressing the
key (22). Do not read off the
weight indicated in the display (18) until the weight unit (in this case “g” or a different unit selected - see "Part III: Balance Operating Menu"} appears as the stability symbol.
Taring
lf you wish to use a Container or if the weight display does not indicate
0.00000 g or 0.0000 g (depe n d i ng on the particular bal a n ce model you are us ing, or on the display mode selected), zero the display before You weigh.
To do so, press the tare control
(24).
During taring, you can have the fully automatic draft shield function either on or
off. To shorten work procedures; and make them easier, you should have this fully
automatic function o n active Status. In this case, after you press the tare control,
the draft shield door will dose, the balance will be tared, and the draft shield door
will re-open.
For more information on turning this function on or off b y menu code, refer to
"Part III: Balance Operating Menu."
1
7
Weighing Range Structure
SuperRange - "SingleWide-Range Balance"
(identified by S in the model designation RC...S)
SuperRange models have an extraordinarily high resolution, i.e., the weighing
range has a resolution ranging u p to a few million digits. There is one level of
fine readability for the entire weighing range [for example: 0.01 mg).
DualRange
(identified by D in the model designation RC...D)
2 weighing ranges;
a fine range and a Standard range
The balance automatically)' switches from the fine range which is 10 times more
accurate (for example:
52 g capacity - readability of 0.01 mg) to the Standard range (for Instance:
210 g capacity -01 mg readability} when the balance is loaded beyond the fine
range limit (>52 g). The weight readout is displayed with the readabil ity o f the
Standard range until you tare in the fine range (loa d <52 g).
PolyRange
(identified by P in the model designation RC...P).
-Wide weighing range with multiple levels of accuracy
In the PolyRange balance, the weighing range is divided into as many as 3
ranges, each with a different readability. In the various ranges, the readability
will adjust so that the last numeral of a 'weight readout is displayed with a resolution of 1, 2 or 5 digits.
After you press the tare control (24), you will obtain the highest possible resolution, even when the balance is loaded.
18
Weighing in the IQ-Mode™
(Load-Dependent Readability)
In the IQ-Mode™ (IQ = Intelligently quick), weighing is done with a loaddependent readability of 0.01 % (for different settings, see "Part III: Bal a nce Operating Menu') throughout the entire weighing range of the balance. The display
resolution of the l a st digit changes in increments of 1, 2, 5, 10, 20, etc. in proportion 1o the weight of a sample.
Oftentimes, a display accuracy of 10 milligrams is sufficient for a load of approx.
110 g. In this case. it makes s ense to select weighing range R 1 with an accuracy
of 0.01 o/a by pressing the toggle key
(25).
While you are filling u p to a target weight. it is certainly easier to work with a
target of 110.20 g than with an absolutely accurate readout of 110.1S885 g.
By selecting the IQ-Mode™ for automatic adaption of the display accuracy, you
will obtain stable weight readouts even faster.
In daily laboratory routines, analyses must often be performed with a certain accuracy. The IQ-Mode™ meets this requirement - on a semi-microbalance, it gives
you the full accuracy of all 5 decimal places for initial sample weights below 1 g;
whereas for heavier samples (of 100 g o r more), it provides lower readability
which is sufficient:
Initial sample weight readout
Below 1 g
Above 100 g
0,98756 g
123,13 g
19
Mass Unit Conversion by Toggling
You can have the weight displayed in grams or milligrams.
To select the three weighing ranges one after the other, press the
toggle key
(25] each time.
In addition to grams and milligrams, this balance gives you a wide variety of
other menu-definable international weight unit options. For more information, refer to "Part III: Balance Operating Menu."
20
Calibration and Linearization
During calibration, the balance is adapted to changes in ambient conditions.
You should recalibrate your balance each lime you set it up in a different area or
when the ambient conditions change (fore example, temperature or barometric
pressure). When these conditions are constant, the balance should be calibrated
once a day. To meet the highest requirements for accurate weighing, we recommend that you calibrate the balance before each weighing series.
Make sure that the draft shield is closed before calibration or linearization Starts.
You can abort any calibration or linearization procedure by pressing the
key (28),
The balance offers you various calibration and linearization functions. The function you select is indicated in the display by one of the following special codes;
»CALI« The balance has built-in calibration weights and can be calibrated
with the
key (“Quick-CAL" - see page 22)
»CALI« The calibration or linearization function is activated
»C.I.« Internal calibration
»C.t.« Calibration test
»L.I.« Linearisieren intern
»C.E.« Eternal calibration
21
Fully Automatic Calibration
lf the
symbol flashes, this means that the balance wants to self--calibrate. You
do not need 1o interrupt your weighing procedure, because the balance will wait
until it detects that you have stopped weighing for one complete minute.
Afterwards, the balance will perform fully automatic internal calibration.
During this procedure, the draft shield should be closed 1o ensure that calibration
is done correctly.
The symbol will flash until the balance Starts this fully automatic procedure on its
own o r until you activate one of the calibration functions by pressing a key (sees
next page).
The balance can perform fully automatic internal calibration two hour after it has
been connected to line power or once the temperature has changed by ±1.5 degrees since the last calibration process. Independently of these factors, the balance can perform a fully automatic calibration after four hours at the latest.
To turn off the fully automatic calibration function by menu code, refer to "Part III:
Balance Operating Menu."
In the fully automatic mode, the draft shield closes after
or the tare control is
pressed.
22
INTERNAL CALIBRATION
Quick-CAL Function using the
key:
Unload the pan, close the draft shield and tare.
When the balance displays a zero readout, press the
key (20).
"C" will now be displayed. The built-in calibration weights are internal~ applied
by servomotor and removed at the end of calibration.
lf external interference affects the calibration procedure, you may obtain a brief
display of the e rror message "Err 02. "
In this case, tare and then press the
key again when a zero readout appears.
An acoustic Signal indicates the end of calibration.
Internal Calibration Using the Tare Control:
Calibrate the balance using the tare control if an application program (such as the
tare memory) is assigned to the
key by menu code in the balance operating
menu (see Parts III a nd IV).
Press the tare control (24) for at least 2 seconds until "C.l." and "CAL” are displayed (next to the
key).
Unload the pan, make sure the draft shield is closed, and tare. When the balance
displays a zero readout, press the
key (20).
“C" will now be displayed. The built-in calibration weights are internal by applied
by servomotor and removed at the end of calibration.
If external interference affects the calibration procedure, you may obtain a brief
display of the e rror message "Err 02. "
In this case, tare and then press the
key again when a zero readout appears.
An acoustic signal indicates the end of calibration.
23
EXTERNAL CALIBRATION
Use only calibration weights that have tolerances equal or better than those of accuracy class E2 (for 200 g -> ±0. 3 mg).
Press the tare control (24) for a1 least 2 seconds until "C.l." and “CAL” are displayed (next to the
key).
Important Note
lf you press the
key (20) when "C.l." is displayed, this will activate the internal
calibration function.
For "external calibration" press the
key (21) until "C.E." is displayed.
“C.E.” Stands for "external calibration."
Unload the balance, make sure the draft shield is closed, and tare.
Press the
key (20) when a zero readout is displayed. Afterwards, the calibra-
tion weight readout will be indicated.
lf external interference affects the calibration procedure, you may obtain a brief
display of the e rror message "Err 02. "
In this case, tare and then press the
key again when a zero readout appears.
Center the calibration weight on the weighing pan and dose the draft shield door.
An acoustic Signal indicates the end of calibration.
24
CALIBRATION TEST
Rather substantial changes In barometric pressure and temperature may affect t
he display response of these highly accurate Research Series balances.
To ensure that you obtain the full accuracy of these balances, even when you use
the entire weighing range, we have implemented a calibra tion lest function. It will
help you decide whether o r not you need to recalibrate your balance (for example, to maintain the same accuracy during long-term weighing series).
Press the tare control (24) for at least 2 seconds until "C.l." and "CAL" are displayed (next to the
key).
Select the calibration test by pressing the
key (21) twice until "C.t." is dis-
played.
Unload the balance, make sure the draft shield is closed and tare.
"C.t." Stands for “calibration fest.”
When the balance displays a zero readout, press the
key (20). The built-in
calibration weights are now internal by applied by servomotor.
Afterwards, the deviation of the momentary weight readout from the target weight
(displayed in grams only) is indicated.
lf external interference affects the calibration test procedure, you may obtain a
brief display of the error message " E R R 02."
In this case, tare and then press the
key again when a zero readout appears.
Important Note
The balance should be recalibrated if the deviation of the readout from zero exceeds the tolerance of the calibration weights used (accuracy class E2 ± 0.3mg).
-key (20): The balance automatically calibrated
(see also page 21).)
or
-key (21): Quits the calibration test
An acoustic Signal indicates the end of the calibration test.
25
INTERNAL LINEARIZATION
Press the tare control {24) for at least 2 seconds until "C.l." and “CAL” are displayed (next to the
key).
Select "internal linearization" by p re s s ing the
key (21} three times until "L.l."
is displayed.
Unload the balance, make sure the draft shield is closed and tare.
"L.l." Stands for "internal linearization."
When a zero readout is displayed, press the
key (20). “C” will now be indicated. The built-in weights are internally applied one after the other by the Servomotor, and the weighing range is automatically liberalized.
lf external interference affects the linearization procedure, you may obtain a brief
display of the e rror message "Err 02. "
In this case, tare and then press the
key again when a zero readout appears.
An acoustic signal indicates the end of linearization.
Important Note
The balance automatically self-calibrates after each internal linearization procedure.
26
Data Interface
lf you wish to record weight data using a Sartorius Data Printer or process them
using "Data Control," plug the printer connector into the interface port (14} of the
balance. You do not need to adjust any settings!
Remove the protective cap from the data interface port.
Caution!
Make sure to unplug the balance from the power supply before you connect or
disconnect a peripheral device (printer or PC) to or from the interface port.
To print data on hard copy or Output them on the
screen o1 an on-line Computer, press the
key (23).
For information o n s pecial data output Parameters, se-e "Utilities" under "Pa rt III:
Balance Operating Menu."
During data Output, you can have the fully automatic draft shield function either
on or off.
To shorten work procedures and make them easier, you should have this fully
automatic function on active Status. In this case, after you press
key, the draft
shield door will dose, the balance will output data, and the draft shield door will
re-open.
For more information on turning this fully automatic draft shield function on or off
by menu code, refe r t o "Part III: Balance Opera ting Menu."
2
7
Interfacing Devices with the Balance
Please note that the interface port is electrically connected lo the protective
grounding conductor of the balance housing. The interface cables supplied as
Standard equipment are shielded, and both ends of each cable are electrically
connected to the connector cases. This co nnection may result in interference
caused by ground loops o r by transient currents if you have grounded the hous ing or connected the protective grounding conductor for line power. If necessary
connect an equipotent bonding conductor to the balance
28
Below-Balance Weighing
A port for a below-balance weighing hanger is available on the bottom of the
balance.
To fasten the hanger, open the below-balan c e por t by r emov i ng t h e tw o scr ews on
the bottom of the balance and detaching the closing plate.
Now you can attach a sample using a Suspension wire, for example.
Common applications for below-balance weighing include specific gravity determination or immersing a sample in a special atmosphere (medium for reaction).
You can also use the M2 thread to attach a sample.
Important Note
When you use such below-balance weighing hangers, you must install a shield to
eliminate drafts..
How to Fasten the Antitheft Locking Device
To fasten the antitheft locking device, use the lug (16) located on the rear panel of
the balance.
At the place of installation, secure your balance with the lock.
29
Troubleshooting Guide
Problem … Causes … Solution
No segments appear in the weight
display (19)
—
No line power available
—
The power supply is not plugged in
—
Check power supply
—
Plug in the power supply
The display shows “Err 54” or ”L”
—
The weighing pan (7) is not in place
—
Position the pan
The display shows ”H”
—
The load exceeds the capacity of the
balance
—
Unload the balance
The display (19) briefly shows
”Err 02”
—
The key (20) was not pressed when the
display indicated a zero readout during
calibration
—
The balance is loaded
—
Press the tare control and re-press
the
key
—
Unload the balance
The display (19) briefly shows
”Err 03” or ”Err 04”
—
The balance is in the warmup phase
—
The weighing System is affected by drafts
or vibrations
—
After plugging the balance into line
power, allow for at least 2 hours'
warmup
—
Set up the balance in another area
The special code “C” does not go
out in the weight display
—
The balance is not ready to calibrate or is
in the warmup phase
—
The weighing system is affected by drafts or
vibrations
—
The draft shield door is not closed
—
The port for the below-balance weighing
hanger is open
—
After plugging in the balance using
the power supply, allow for at least 2
hours' warmup
—
Access the menu to select the correct
code for the weighing enviro nment
(see Part III)
—
Check draft shield function and dose
door
Fasten the closing plate to dose the port
for below balance weighing
The special code does not go
out in the weight display (19)
—
None of the keys has been pressed after the
balance was turned on
—
Press a key
The weight readout changes
constantly
—
Unstable ambient conditions
—
Too much Vibration or the balance is
exposed to a draft
—
The door of the draft shield is not
completely closed
—
A draft shield cover is not in place
—
A foreign object is caught between the pan
and the bottom of the weighing chamber
—
The port for the below-balance weighing
hanger is open
—
The sample does not have a stable weight
(absorbs moisture or evaporates)
—
Set up the balance in another area
—
Access the menu to select the correct
code for the weighing enviro nment
(see Part III)
—
Close the draft shield door
—
Position the draft shield cover
—
Remove foreign object
—
Fasten the plate to dose the port for
below-balance weighing
The weight readout is obviously
wrong
—
The balance is not calibrated
—
The balance was not tared
before weighing
—
The air bubble in the level indicator (10) is
not within the circle
—
Calibrate (see pp. 20-25)
—
Tare before weighing
—
Level the balance (see page 11)
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