Biegler BW 685 Operating instructions

BW 685 Service Instructions July 2007
Service Instructions
Blood and Infusion
Warmer
BW 685 / BW 685 S
Print version BW 685 V 7
Software V 1.5

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Page 2 BW 685 Service Instructions July 2007
Table of contents
1. Technical Data.................................................................................................. 3
2. Symbols Used .................................................................................................. 4
3. Safety Instructions............................................................................................ 5
4. Warranty........................................................................................................... 7
5. Safety Shutdown .............................................................................................. 8
6. Setting the temperature .................................................................................. 10
7. Service Interface............................................................................................. 11
8. Maintenance / Testing Instructions................................................................. 14

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Page 3 BW 685 Service Instructions July 2007
1. Technical Data
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Technical data for BW 685 / BW 685 S:
Device: Blood and Infusion Warmer
Type designation: BW 685 / BW 685 S
Voltage: 230 V / 50 Hz
Power consumption: 1.5 A
Protection class: I
Degree of protection: B
Humidity protection: IPX4
Fuses: primary 2 x 1.6 AT secondary 500 mAT
Control temperature: 37°C - 41°C adjustable in 0.5°C steps
Overtemperature shutdown: 42°C / 42.5°C / 45°C±3°C
Max. system pressure: 300 mm Hg
Classification: IIb according to Rule 9
Operational mode: Continuous operation
Dimensions BW 685: WxHxD 228 x 228 x 132 mm
Weight BW 685: 1.9 kg
Dimensions BW 685 S: WxHxD 228 x 278 x 132 mm
Weight BW 685 S: 2.0 kg
Tube warmer Tubeflow
for BW 685 S: Length 1340 mm

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Page 4 BW 685 Service Instructions July 2007
2. Symbols Used
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0123 Certifies compliance with the Directive 93/42/EEC
Observe the instructions for use
Do not dispose of this product as unsorted municipal waste
Control for increasing the temperature setting
Control for decreasing the temperature setting
IPX 4 Humidity Classes
Degree of protection B
Control for switching On / Standby
- for optional tube warmer Tubeflow
I Operation Malfunction
Do not cover Do not wrap up
Do not expose to direct
sunlight Do not cut

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Page 5 BW 685 Service Instructions July 2007
3. Safety Instructions
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The manufacturer, assembler, installer or importer is considered responsible for the device's
effect on safety, reliability and performance only if:
•the device is used in compliance with the instructions for use
•the electrical installations in the affected rooms comply with the existing special
technical regulations
•modifications, repairs or new adjustments have been or are only performed by
Biegler or authorized personnel
•only original replacement parts from Biegler are used for repairs
(applies also for the mains power cord).
After the buzzing tone sounds or the red alarm light lights up, the infusion or
transfusion tube must be removed immediately from the warming cylinder!
The infusion or transfusion solution may no longer be used on the patient!
•In the event of any suspected malfunction while in operation, the device should be
immediately removed from service and not used for infusions or transfusions until
appropriate investigations have demonstrated that there has been no impairment.
•If the high temperature alarm is triggered the supply of liquid to the patient must be
immediately stopped by disconnecting the connection tube to the patient. The
medium being used in the device must no longer be administered to the patient.
•The device may only be fastened to infusion stands, tripods or equipment rails
which are suitable due to their stability and load capacity.
•Only sterile consumables prescribed by BIEGLER may be used in conjunction with
the BW 685 / BW 685 S.
•The device must only be used in areas in which the electrical installations are in
accordance with the standards and regulations in force.
•Safe disconnection from the mains power supply can only be achieved by
unplugging the mains plug.
•The device may not be used in rooms subject to explosion hazard.
•Repairs and modifications to the device may only be carried out by persons or
service centres authorised by BIEGLER.

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Page 6 BW 685 Service Instructions July 2007
•The device must not be immersed in liquids or sterilised with steam or by
thermochemical methods.
•All extraneous influences, such as electromagnetic waves or high temperatures
are to be kept to a minimum.
•The system may malfunction due to the effect of strong electromagnetic fields
(e.g. by HF therapy or surgical devices). The warmer works perfectly within the
limit values of the Standard EN 60601-1-2. The system can be affected by limit
values that do not comply with the Standard EN 60601-1-2.
•Avoid exerting force on the device or its accessories.
•If the device is dropped, damaged by force or if it shows a function deviating from
the instructions for use, stop using the device immediately and return it to the
service centre.
•The periodic technical safety inspections must be carried out (see the section
"Periodic inspections")
Supplementary safety instructions for the accessory tube warmer Biegler Tubeflow BW
685 S:
•The Biegler Tubeflow may only be clamped to the Biegler blood warmer BW 685 S
with the fixing clamp according to the diagram in the chapter of the instructions for
use "Initial operation".
•Do not kink, cover, warm or cool the Biegler Tubeflow. Do not cover the Tubeflow
with cloths or dressing material. Do not lead under blankets, warm air blankets,
etc. Do not expose to direct sunlight or heat radiation. Lead the Tubeflow through
the air unencumbered. Do not lead into or through incubators. Overwarming of the
warmed liquid or burns to the patient cannot to be excluded in the case of non-
compliance.
•Do not shorten or damage the Biegler Tubeflow.
The BW 685 / BW 685 S may not be used if:
•the housing is damaged or one of the front film layers becomes detached.

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Page 7 BW 685 Service Instructions July 2007
•the device has been exposed to a hard physical shock (e.g. dropped, hit or
shaken)
•the device has been immersed in water
•the device has triggered a high temperature alarm that was not caused by
external factors.
•the mains power cord or plug is damaged
•the device has given somebody an electric shock
the fixing clamps are damaged and no longer assure safe clamping to the infusion stand.
Should a malfunction be evident, suitable warning signs should be attached to the device
to ensure that it cannot be used before necessary service and repair work has been
carried out.
4. Warranty
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Biegler Medizinelektronik provides a warranty for this device for a period of two years
from the purchase date.
This warranty applies for defects in materials and workmanship and includes both
replacement parts and labour.
The activated warranty requires that an invoice or proper receipt be presented and that
the warranty claim be made within the warranty period.
The warranty expires if the device has been damaged, not used or maintained
properly according to the instructions for use or unauthorized repairs or alterations
have been made.

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Page 8 BW 685 Service Instructions July 2007
5. Safety Shutdown
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42 °C (software alarm):
•Switch device on
•Preheat the BW to 41°C and wait for the temperature to stabilise
•Disconnect the mains plug
•Hold down the control ↑and reconnect the mains power cable.
•Press the control Operation/Standby (the device now slowly heats up to a target
temperature of 42.5 °C)
•Observe the temperature display carefully. The high temperature alarm should
be triggered at 42°C. (for reasons of safety, short beeping sounds are given at
intervals of a second in this operational mode – the LEDs of the STANDBY
indicator also flash, alternating with each other)
42.5 °C (hardware alarm):
Important: Testing of the hardware alarm can only be conducted with the service cable
LZ10B0685!
•Connect the blood warmer to the computer and start a terminal programme
•Switch the blood warmer on and preselect 41°C on the device
•Allow the BW to warm up (about 1 minute)
•Press the "e" key on the computer
The blood warmer is now in set-mode. This is signalled by the blinking of the
STANDBY indicator and a beep.
•With the software alarm deactivated, the device now heats up to a temperature
of 45°C. The hardware temperature shutdown must be active at 42.5°C +/-
0.5°C
45 °C (overtemperature cut-out):
•If, for any reason, the first and second electronic safety shutdowns do not
activate, then the heat exchanger will be shut off by an automatic, resetable
thermal cut-off at a temperature of 45°C.
•After the heat exchanger cools, the electronic shutdown must be tested. If this
test is positive, the device can be put back into operation after cooling.
•This type of shutdown may also activate if the device is stored in the vicinity of
strong heat sources or exposed to direct sunlight.

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Page 9 BW 685 Service Instructions July 2007
5 . Safety Shutdown
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37 °C (low temperature alarm):
This alarm cannot active until 60 seconds after switching on the device. If the
temperature of the heat exchanger is less than 36.5°C, the user will be notified by the
low temperature alarm both optically and acoustically. The alarm is signalled by the
blinking of the STANDBY display and an intermittent beep. This alarm resets
automatically (if the temperature rises again to 37 °C, the alarm stops).
If a type of shutdown is activated, the device must be tested immediately and
repaired, if necessary.

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Page 10 BW 685 Service Instructions July 2007
6. Setting the temperature
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•Start the terminal software
•Connect the BW 685 with the computer or terminal (RS 232) using the connecting
power cable LZ 10B0685 (Biegler ID)
•The monitor must now display data output as described in section 7, Service
Interface
•Attach a suitable temperature probe ( Ø 0.5 mm) in the middle of the heating ring
on the upper side with a piece of infusion tubing in such a way that the temperature
can be measured on the groove bed
•Send the command “ * “ to the BW685 to set the correction factors of both sensors
to 0
•Start the warmer's heater and wait until the temperature has stabilised. This
measurement must only be conducted in draft-free rooms to avoid false
measurements.
•Conduct the temperature control.
The measured temperature should be the same ( +/- 0.1 °C) as the temperatures
displayed on the monitor ( actual-f and actual-r)
Deviations up to +/- 0.5 °C can be compensated for with the commands “ !“, “ „“, “
?“ and “ =“.

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Page 11 BW 685 Service Instructions July 2007
7. Service Interface
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The BW 685 is equipped with a service interface. This serial interface provides
different measured values that can be very useful during calibration and trouble-
shooting. The BW 685 can be connected directly to a PC or terminal with an
appropriate connecting power cable. The data can be displayed using an available
terminal programme (hyperterminal).
Data format:
19 200, n, 8, 1
Control codes:
code description usage
r run service/remote
s stop service/remote
0 set temp. 37°C service/remote
1 set temp. 37.5°C service/remote
2 set temp. 38°C service/remote
3 set temp. 38.5°C service/remote
4 set temp. 39°C service/remote
5 set temp. 39.5°C service/remote
6 set temp. 40°C service/remote
7 set temp. 40.5°C service/remote
8 set temp. 41°C service/remote
9 set temp 41.5°C debugging
! heating correction front - 0.1 calibration
" heating correction front + 0.1 calibration
? heating correction rear + 0.1 calibration
= heating correction rear - 0.1 calibration
* all heating corrections 0 calibration
$ reset hour meter service/info
b display hour meter service/info
: set temp. 42°C debugging
< dec set temp (step 0.1°C) debugging
> inc set temp (step 0.1°C) debugging
c low temperature test service
h overtemperature test service
l LED-test service
t testmode 2 (no alarms) service
e testmode 1 (heater 42.5°C) service
n
back to normal operation (after
testmodes) service
( TubeFlow on service/remote
) TubeFlow off service/remote
o relais test service

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Page 12 BW 685 Service Instructions July 2007
Output:
headline description usage
target setting temperature service
ist_v meas. temp front service
ist_h meas. temp rear service
reg temp. value used for regulation debugging
mean mean temperature used for display service
S>I diff setting/meas temp debugging
I>S diff meas/setting temp debugging
P% heat output debugging
s temp. slew rate debugging
err error counter debugging
t low temp. Inhibit alarm timer debugging
kor_v correction value front service
kor_h correction value rear service

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Page 13 BW 685 Service Instructions July 2007
example of BW685 ASCII output
[38.5 38.5 38.6 38.6 38.5 00.0 00.1 008 000 000 085 +0.0 +0.0 ]
[38.5 38.6 38.7 38.7 38.5 00.0 00.2 006 001 000 084 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.5 00.0 00.3 004 001 000 083 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.6 00.0 00.3 004 000 000 082 +0.0 +0.0 ]
soll ist_v ist_h reg mean S>I I>S P% s err t kor_v kor_h
[38.5 38.6 38.8 38.8 38.6 00.0 00.3 004 000 000 081 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.6 00.0 00.3 004 000 000 080 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.6 00.0 00.3 004 000 000 079 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.7 00.0 00.3 004 000 000 078 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.7 00.0 00.3 004 000 000 077 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.7 00.0 00.3 004 000 000 076 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.7 00.0 00.3 004 000 000 075 +0.0 +0.0 ]
Standby
[38.5 38.6 38.7 38.7 38.7 00.0 00.3 000 000 000 074 +0.0 +0.0 ]
[38.5 38.6 38.8 38.8 38.7 00.0 00.3 000 001 000 073 +0.0 +0.0 ]
[38.5 38.6 38.7 38.7 38.7 00.0 00.3 000 000 000 072 +0.0 +0.0 ]
[38.5 38.6 38.7 38.7 38.7 00.0 00.3 000 000 000 071 +0.0 +0.0 ]
[38.5 38.6 38.7 38.7 38.7 00.0 00.3 000 000 000 070 +0.0 +0.0 ]
[38.5 38.5 38.6 38.6 38.7 00.0 00.3 000 000 000 069 +0.0 +0.0 ]
[38.5 38.5 38.6 38.6 38.7 00.0 00.3 000 000 000 068 +0.0 +0.0 ]
[38.5 38.5 38.6 38.6 38.7 00.0 00.3 000 000 000 067 +0.0 +0.0 ]
Operation Heating starts with 010
soll ist_v ist_h reg mean S>I I>S P% s err t kor_v kor_h
[38.5 38.5 38.6 38.6 38.6 00.0 00.1 010 000 000 090 +0.0 +0.0 ]
[38.5 38.5 38.6 38.6 38.6 00.0 00.1 010 000 000 089 +0.0 +0.0 ]
[38.5 38.4 38.6 38.6 38.6 00.0 00.1 010 000 000 088 +0.0 +0.0 ]
[38.5 38.4 38.6 38.6 38.6 00.0 00.1 010 000 000 087 +0.0 +0.0 ]
[38.5 38.4 38.6 38.6 38.6 00.0 00.1 010 000 000 086 +0.0 +0.0 ]
[38.5 38.4 38.6 38.6 38.6 00.0 00.1 010 000 000 085 +0.0 +0.0 ]
[38.5 38.4 38.5 38.5 38.5 00.0 00.0 010* 000 000 084 +0.0 +0.0 ]
soll ist_v ist_h reg mean S>I I>S P% s err t kor_v kor_h
[38.5 38.4 38.5 38.5 38.5 00.0 00.0 010* 000 000 083 +0.0 +0.0 ]
[38.5 38.4 38.5 38.5 38.5 00.0 00.0 010* 000 000 082 +0.0 +0.0 ]
[38.5 38.4 38.6 38.6 38.5 00.0 00.1 008 001 000 081 +0.0 +0.0 ]
[38.5 38.4 38.6 38.6 38.5 00.0 00.1 008 000 000 080 +0.0 +0.0 ]
Description:
[ Data start
] Data Stop
* Heater on (used with P%)
“Betrieb” Message: BW685 is in operation mode
“Standby” Message: BW685 is in standby mode
“Heizung start mit 010”
Message:
H
eater starts with 10% power
(for debugging)

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Page 14 BW 685 Service Instructions July 2007
8. Maintenance / Testing Instructions
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These instructions serve as a reference.
Any changes that occur will be issued by BIEGLER in the form of
supplementary sheets and must be added immediately.
A maintenance test must be conducted after a repair of the BW 685. This is identical to
the PERIODIC INSPECTION.
PERIODIC INSPECTION
The periodic technical safety inspections (according to the local standards in force -
e.g. in Austria ÖVE/ÖNORM E 8751-1) must be carried out on the BW 685 / BW 685 S
at least every 12 months by persons able to carry out such technical safety inspections
based on their training, knowledge and experience gained by practical activities.
The results of the periodic inspection are to be documented, together with the date
and the inspecting agency, in the inspection protocol provided.
Important: Should a malfunction be evident during the periodic inspection, suitable
warning signs should be attached to the device to ensure that it cannot be used before
necessary service and repair work has been carried out.
CHECKING THE WARM-UP PERIOD
This is the time taken by the BW 685 / BW 685 S to heat up to 38.5°C from room
temperature. The device is malfunctioning if it takes much longer than one minute.
CHECKING THE CONTROL TEMPERATURE
The control temperature is checked on the groove bed of the heat exchanger. The
sensor of a suitable contact thermometer (tolerance +/- 0.15°C) is fixed to this position,
e.g. by using a piece of infusion tubing. The examination is performed at a
temperature setting of 38.5°C. The measured value is read after it has stabilized. The
difference must not exceed +/- 0.5°C. There is a malfunction if a difference from the
control temperature of greater than +/- 0.5°C is obtained.

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Page 15 BW 685 Service Instructions July 2007
8. Maintenance / Testing Instructions
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LONG-TERM TEST:
•Start-up at 38.5 °C
•Measure the temperature on the heat exchanger after about 15 min.
•Measure the temperature again after 24 hours
The initial value (after 15 minutes) and the end value (after 24 hours) must not lie
outside of tolerance range; the measurements must always be made under the
same environmental conditions.
The end value may deviate from the initial value by ± 0.5°C.
Fig.1 - Measurement Set-up
•Attach a suitable temperature probe ( Ø 0.5 mm) in the middle of the heating ring
on the upper side with a piece of infusion tubing in such a way that the temperature
can be measured on the groove bed
Measuring device used: TESTO Contact Thermometer 935
Precision: ± 1 digit
Type K ±0.7 °C ±0.5 % from the measured value
Contact thermometer

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Page 16 BW 685 Service Instructions July 2007
INSPECTION OF THE OVERTEMPERATURE ALARM (Software)
Preheat the device to 41°C and wait for the temperature to stabilise, then disconnect
the mains plug. Hold down the control and reconnect the mains power plug. After
the beep has ceased, release the control . Press the switch . The device now
slowly heats up to a target temperature of 42.5°C. Observe the temperature display
carefully. The high temperature alarm should be triggered at a temperature of 42°C.
For reasons of safety, short beeping sounds are given at intervals of a second in this
operational mode and the STANDBY indicator (Diag.1/4) flashes. There is a
malfunction if the high temperature alarm is not triggered.
To reset the alarm, either disconnect the mains plug and allow the device to cool and
then start up again, or reset the alarm using the service interface.
VISUAL CHECK OF GENERAL CONDITION
The device should be checked for mechanical damage (general mechanical condition)
and for the completeness of the front film layer, sticker information, particularly the
device label on the reverse. There is a malfunction if mechanical damage to the device
is evident which could be harmful or impair the functional operation of the device. Also,
the device must not have any dirt on it that might impair safety.
ELECTRICAL SAFETY
All relevant electrical safety data should be checked, particularly the earth conductor
resistance (Target: < 0.3 Ohm) and leakage current (Target: < 0.75 mA). There is a
malfunction if there is a measured value outside the tolerances.
These tests must be conducted at the operating temperature.

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Page 17 BW 685 Service Instructions July 2007
8. Maintenance / Testing Instructions
( IMPORTANT: Voltage ! )
They are performed using the safety tester GERB - GM- 100 and the test
programme BLUTW. 1. The protocol is stored in the PC.
INSPECTION OF THE FUSES IN PLACE
Necessary only after repair carried out.
The fuse inserts must be especially tested during maintenance work. For this
device, either of the following may be used.
primary: BW685 230V 1.6 AT
secondary all BW 685: 500 m AT
.

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Page 18 BW 685 Service Instructions July 2007
MAINTENANCE AND INSPECTION PROTOCOL FOR
BW 685
Device no.: ............................. Date: .....................
230V Print number:.............................
These tests require a precise knowledge of the associated maintenance / testing
instructions!
EVALUATION
TEST TARGET / FUNCTION
OK /
Value
not OK
1. Long-term test Initial value:.......................°C
End value:..............................°C
2. Operational
readiness
(at room temp.)
Warm-up period:........................s
3. Overtemperature
cut-off Target: <42.5 °C
4. Low temperature
Cut-off Target: <36.5 °C Internal to BIEGLER only
5. High voltage Target: 1.5 kV / 1 minute Internal to BIEGLER
only
6. Electrical fuse
6.1. Earth conductor
resistance < 0.3 Ω
6.2. Replacement
device leakage
current
< 0.75 mA
6.3 Replacement
device leakage
current
first measured value
7. Fuse insert Only after repair carried out.
8. Mechanical
condition
9. Dirt
10. Verification of
labels
Signature of the
inspecting personnel:

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Page 19 BW 685 Service Instructions July 2007
The function controls indicated in the operating instructions must be
conducted.
The replacement leakage current cannot be greater than 1.5 times the first
measured value and, at the same time, not greater than the threshold
indicated above.
If the devices are not functionally and/or operationally safe, they must be
repaired or the operator must be informed of the hazard from the device.
The proper conducting of the tasks listed above and the correctness of the
information must be confirmed.
Comments:
Technician Operator
__________________ ________________
(Date, Signature) (Date, Signature)

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Page 20 BW 685 Service Instructions July 2007
---------------------------------------------------------------------------
GERB Elektronik GmbH
Page 1 BLUTW1 Test Procedure Electrical Safety
---------------------------------------------------------------------------
Test point Description
---------------------------------------------------------------------------
GERB024 Power measurement
The effective power use of the device being tested is measured
The measurement is limited by time. Any time exceeded is indicated.
Maximum power use 3.5 kVA.
Care must be taken that the blood warmer is in the warming up phase when this
measurement is taken.
Measurement unit: Watt Target: 0.00 Threshold: 0.00Interval tol.: 0.00 Rel. tol. 0.00
Measurement unit: Watt Target: 0.00 Threshold: 0.00 Interval tol.: 0.00 Rel. tol. 0.00
GERB003 Insulation resistance network protective earth conductor
Test voltage 500V= over 5 Mohm applied to both phases of the device to be tested.
The resistance between the phases and the earth conductor is measured.
Mains switch ON!
Measurement unit: MOhm Target: 0.00 Threshold: > 2.00 Interval tol. 0.00 Rel. tol. 0.00
Measurement unit: MOhm Target: 0.00 Threshold: > 2.00 Interval tol. 0.00 Rel. tol. 0.00
GERB005 Earth conductor resistance
Test voltage 6V max. 25A at the connection of the testing tip.
The testing tip must be held on the warming ring.
The test is limited by time.
If the time is exceeded, this will be displayed on the monitor.
Measurement unit: MOhm Target: 0.00 Threshold: < 0.30 Interval tol.: 0.00 Rel. tol. 0.00
Measurement unit: Ohm Target: 0.00 Threshold: < 0.30 Interval tol.: 0.00 Rel. tol. 0.00
GERB005 Earth conductor resistance
Test voltage 6V max. 25A at the connection test peak.
The testing tip must be held on the fastening clamp.
The test is limited by time.
If the time is exceeded, this will be displayed on the monitor.
Measurement unit: Ohm Target: 0.00 Threshold: < 0.30 Interval tol.: 0.00 Rel. tol. 0.00
Measurement unit: Ohm Target: 0.00 Threshold: < 0.30 Interval tol.: 0.00 Rel. tol. 0.00
GERB006 Earth leakage current N.C.
The earth leakage current is measured under operating conditions.
No additional grounding connection is allowed to be established between the safety testing device
GM 100
and the device to be tested.
No testing tip is necessary.
Mains switch ON
Measurement unit: µA Target: 0.00 Threshold: < 500 Interval tol.: 0.00 Rel. tol. 0.00
Measurement unit: µA Target: 0.00 Threshold: < 500 Interval tol.: 0.00 Rel. tol. 0.00
GERB009 Housing leakage current S.F.C-PE open
The testing tip is held on conductive housing parts of the device to be tested.
Do not create any additional bond to the device to be tested
No testing tip is necessary.
Mains switch ON
Measurement unit: µA Target: 0.00 Threshold: < 500 Interval tol.: 0.00 Rel. tol. 0.00
Measurement unit: µA Target: 0.00 Threshold: < 500 Interval tol.: 0.00 Rel. tol. 0.00