Krober O2 Manual

Technical Information
Kröber O2
D.SPEC.02.B.00 Kröber O2 - Informations techniques_General_EN
v. 28/06/2019

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© Kröber Medizintechnik GmbH
Salzheck 4
D-56332 Dieblich
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kroeber.de
Rev.: 1
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Table of contents
1 Preliminary remarks............................................................................................................5
1.1 General information........................................................................................................ 5
1.2 Warranty......................................................................................................................... 5
2 Service..................................................................................................................................7
2.1 Kröber O2....................................................................................................................... 7
2.1.1 Opening the Kröber O2............................................................................................ 7
2.1.2 Closing the Kröber O2.............................................................................................. 9
2.2 The functional unit........................................................................................................ 10
2.2.1 De-installing the functional unit.............................................................................. 11
2.2.2 Installing the functional unit.................................................................................... 13
2.3 The fan......................................................................................................................... 17
2.3.1 Disassembling the fan............................................................................................ 17
2.3.2 Installing the fan..................................................................................................... 19
2.4 Control PCB .................................................................................................................21
2.4.1 Uninstalling the control PCB .................................................................................. 21
2.4.2 Installing the control PCB....................................................................................... 26
2.5 The compressor ........................................................................................................... 30
2.5.1 Removing the compressor..................................................................................... 30
2.5.2 Installing the compressor....................................................................................... 33
3 Maintenance procedures ..................................................................................................35
3.1 Safety inspection, annually........................................................................................... 35
3.2 Exchanging the filters................................................................................................... 35
3.2.1 Coarse dust filter.................................................................................................... 35
3.2.2 Device inlet filter..................................................................................................... 36
3.2.3 Device outlet filter................................................................................................... 36
4 Recommendations for re-processoing............................................................................38
4.1 without change of the patient ....................................................................................... 38
4.2 with change of the patient ............................................................................................ 38
5 Description of functions ...................................................................................................39
5.1 General information...................................................................................................... 39
5.2 Control PCB .................................................................................................................40
5.3 flow schematics............................................................................................................ 41
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5.4 Alarms...........................................................................................................................42
5.4.1 Alarm priorities .......................................................................................................42
5.4.2 Alarm categories ....................................................................................................43
5.5 Symbols........................................................................................................................47
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1 Preliminary remarks
1.1 General information
This technical information describes the oxygen concentrator Kröber O2.
It is only valid in connection with the instructions for use Kröber O2.
The Kröber O2 is normally equipped with a humidifier directly attached to the KröberO2.
Additionally there is a humidifier for patient-side humidification available.
The minimum performance specifications for the Kröber O2 oxygen concentrator are as
follows:
up to 4 lpm flow: 95 % O2 +/- 3 %
up to 5 lpm flow: 85 % O2 +/- 3 %
up to 6 lpm flow: 75 % O2 +/- 3 %
These specifications must be determined and documented during the routine maintenance
procedure.
Necessary equipment: oxygen meter
flow meter 0-6 lpm
All settings mentioned in this Technical Information are benchmarks and provide a basis for
optimizing the performance data.
Data retrieved from the microcontroller are helpful for further analysis and error investigation
by the trained service technicians.
1.2 Warranty
Differing from our General Terms of Business we grant an extended warranty of 30.000
operating hours for all functional parts (e.g. compressor, control board, valve technology,
etc.) used in our oxygen concentrator Kröber O2 . This extended warranty is valid for
maximum 5 years from the date of purchase.
This warranty does not cover filters and zeolites, damage caused by improper handling and
mechanical damage of parts (e.g. transport damage).
Our warranty is limited to the free-of-charge replacement delivery for defective parts. The
defective components must be returned to us for inspection. Locally arising costs for travel
and labour time will not be refunded. If units are returned to us free of charge for warranty
repair we will also cover the labour costs for probable warranty repairs.
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Preliminary remarks
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2 Service
2.1 Kröber O2
2.1.1 Opening the Kröber O2
WARNING! Danger of electric current!
Before opening, the unit must be switched off and disconnected from the mains
supply.
NOTE!
For easy access to the unit, place the unit on a clean support. Empty and remove the
installed humidifier first.
1. Unscrew S1 to S5.
2. Carefully remove grey housing.
3. Carefully remove the blue service flap and store it separately.
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4. In the opened unit there are the subassemblies:
a. control PCB
b. functional unit
c. compressor
d. fan
and the components
e. capacitor
f. power cord
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2.1.2 Closing the Kröber O2
NOTE!
Closure of the Kröber O2 can be easily done with a device placed on the side.
1. Carefully re-install the grey
housing cover and pay attention
for a correct fit.
2. Insert all housing screws; screws
down S4 und S5, then all other
screws
3. Carefully feed the blue service
flap with both lateral noses into
the corresponding support in the
main housing body. Gently
stretch the housing.
4. Screw all five housing screws
hand-tight.
5. Install the coarse dust filter cover
in the back of the Kröber O2.
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2.2 The functional unit
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2.2.1 De-installing the functional unit
1. Remove the red connector of the
solenoid wire from the control
PCB.
2. Dismantle the EMC-core using an
edge cutter.
3. Press the rim of quick connect at
the air inlet of the functional unit
smoothly down and pull out the
tubing.
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4. Push the rim of the quick connect
hose at the gas outlet of the
functional unit smoothly and pull
out the tubing.
5. Lift half-way the functional unit.
6. Push the rim of the quick connect
hose at the pressure outlet of the
functional unit smoothly and pull
out the tubing.
7. Take out the functional unit
completely.
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2.2.2 Installing the functional unit
1. Remove the three protection caps
from the inlets and outlets of the
functional unit.
2. Guide the quick connect of the
pressure sensor into the
corresponding port of the
functional unit.
3. Insert the functional unit carefully
into the slot.
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4. While inserting, pay attention to
properly insert the exhaust muffler
into the corresponding slot.
5. The exhaust muffler is in the
correct end position if it is facing
the compressor.
6. In the correct end position, the
head of the functional unit is held
by a stop (s. circle).
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7. Attach the hose of the product gas
outlet as far as it will go.
8. Install the quick connect hose as
far as it will go into the air inlet of
the functional unit.
9. Fixate the EMC filter with a cable
tie at the outlet hose of the air-
cooler coil.
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10. Attach the red connector of the
solenoid driver cable with the
corresponding connector on the
control PCB. Check polarity. The
pin should be pointing towards the
black box header.
11. Install the connector as far as it
goes.
12. Check piping and wiring for proper
laying without kinking or pinching.
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2.3 The fan
2.3.1 Disassembling the fan
1. Unfasten both wires of the fan at
the terminal block on the control
PCB.
2. Cut the cable tie of the cable
harness with an edge cutter.
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3. Pull out the complete assembly
(fan and air-cooler) half-way.
If necessary unfasten the EMC-
filter from the air-cooler.
Note!
Eventually re-adjust compressor
wire and thereby release any
tension!
4. Unfasten the 4 mounting screws
of the fan.
5. Do not unscrew the screws
completely, leave them in the
thread.
6. Remove the fan out of the unit.
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2.3.2 Installing the fan
1. When installing the fan, pay
attention that the imprinted arrow
(indicating the air flow) points
towards the steel plate.
2. Screw the four mounting screws
hand-tight.
3. Push the fan support evenly back
into the slots.
NOTE!
Pay attention that the silicone
profiles also slide into the slots.
4. If necessary, re-adjust the
position of the compressor wires.
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5. If necessary re-fasten the EMC-
filter with a cable tie at the
silicone hose of the air-cooler
outlet.
6. Re-install the leads (no. 5 and 6)
of the fan in the terminal block
pos. 5 and 6.
7. Bind together the cable harness
and the hose with a cable tie.
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