Technical Description
AK 95 / AK 95 S Service Manual
HCEN 9134 Rev. 10.2005
2:14
Component Description
Heater relay board
The heater relay board comprises the following:
•
Opto relay
•
Heater safety relay
•
Heater sensor (“energized”)
Pressure regulator, PR 2
The pressure regulator is adjusted to give cor-
rect pressure (approx.. +130 mmHg).
Conductivity measuring unit
The unit includes the following components:
•
Measuring cell.
•
Conductivity board, which is mounted
directly on the measuring cell. The con-
ductivity board interfaces to the CPU
board, via a board connector and a flat
cable.
•
Temperature transducer.
Degassing chamber
The AK 95 S contains one degassing chamber
used to separate air from the dialysis fluid.
The degassing chamber comprises a mechanical
float valve.
Mixing chambers
The AK 95 S contains two mixing chambers used
to mix the concentrate with the water and
separate air from the dialysis fluid before enter-
ing the conductivity cell.
Deairating chamber
The deairating chamber comprises a level
detector and the dialysis fluid pressure trans-
ducer. The level detector interfaces to the FM I/
O board, via a cable. The pressure transducer is
connected to a pressure transducer board, via a
twisted cable. The pressure transducer board
interfaces directly to the FM I/O board.
Flow pump unit
The flow pump unit consists of the following:
•
Gearwheel pump driven by a DC-
motor.
•
Pressure transducer with board. The
pressure transducer is connected to the
transducer board, via a twisted cable. The
transducer board interfaces directly to the
FM I/O board, via a board connector.
Dialyzer connections
The input tube nipple is fitted with a particle
filter.
Safety coupling unit
The safety coupling unit comprises two tube
connections, which are used when the machine
is to be disinfected, and a pressostate
SAGS
,
which detects when the tubes are disconnected
from the safety coupling.
The AK 95 S is also equipped with a pair of
mechanical switches that sense if the dia connec-
tors are attached to the bypass block.
UF measuring unit
The UF measuring unit consists of the following
components:
•
Measuring cell.
•
UF amplifier board.
•
UF driver board.
The boards are mounted on each side of the
measuring cell. The UF measuring unit inter-
faces to the Control Driver, via the UF amplifier
board, a board connector and a flat cable.
FM I/O board
The FM I/O board contains of 6 connectors to
pressure transducers and temp. transducers. It
also contains the running time meter.
Heater unit
The heater is connected to the relay board, via a
cable. It comprises a temperaturetransducer
T
Reg
. The transducer is connected to a transducer
board, via a twisted cable. The transducer board
interfaces directly to the
FM I/O board, via a board connector.
NOTE!
If the heater cartridge has been over-
heated, this must be exchanged and the leakage
current to earth measured before restart.
Flow Switch
A mechanical flow switch is mounted before the
heater. The flow switch will turn off the heater
in a no-flow situation.
Summary of Contents for AK 95 S
Page 1: ...AK 95 AK 95 S Service Manual A better way to better care...
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Page 6: ...Installation Guide AK 95 AK 95 S January 2004...
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Page 102: ...Maintenance Manual AK 95 AK 95 S October 2006 GAMBRO...
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Page 152: ...Spare Parts List AK 95 AK 95 S October 2005...
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Page 159: ...HCEN9094Rev 10 2005 7 3 Operator s panel 9 1 3 4 5 6 5 7 5 2 8 6 6 8...
Page 161: ...HCEN9094Rev 10 2005 7 4 Blood pump 10 2 8 3 5 9 4 7 1 6 11 12...
Page 163: ...HCEN9094Rev 10 2005 7 5 Blood pump Motor unit 8 7 6 9 2 10 3 4 5 1 11...
Page 165: ...HCEN9094Rev 10 2005 7 6 Heparin pump 1 2 3 4 5 6 8 7...
Page 169: ...HCEN9094Rev 10 2005 7 8 Magnetic Clamp unit 1 2 3 7 8 12 16 4 5 6 9 10 11 17 18 14 13 19 15...
Page 181: ...HCEN9094Rev 10 2005 7 13 Heater Flow guard 3 9 1 2 10 4 8 7 11 12 13 5 6 3...
Page 189: ...HCEN9094Rev 10 2005 Protective Protective 7 17 Boards 7 1 2 9 6 5 4 3 8...
Page 191: ...HCEN9094Rev 10 2005 1 7 18 Rear box 6 3 7 5 4 2...
Page 195: ...HCEN9094Rev 10 2005 T12AH 250AC BACH BACO HALT 7 20 AC DC 2 4 5 1 6 7 8 9 3...
Page 205: ...HCEN9094Rev 10 2005 7 25 MM I O board 3 2 9 4 6 7 8 5 1 10...
Page 215: ...HCEN9094Rev 10 2005 7 30 UFD Option 4 5 7 17 12 9 6 18 1 6 11 16 8 10 6 13 14 3 2 6 19 15...
Page 219: ...HCEN9094Rev 10 2005 7 32 Boards and Cablings EN1107 10 Step driver board...
Page 221: ...HCEN9094Rev 10 2005 7 32 Boards and Cablings EN1107 10 Step driver board...
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Page 225: ...9 1 HCEN9160 Revision10 2005 Service Manual Symbols Chapter9 SymbolDescription...
Page 228: ...9 4 HCEN9160Revision10 2005 Service Manual Symbols Thispageisleftintentionallyblank...
Page 234: ...Replacements 10 6 AK 95 AK95SHCEN12078Rev 10 2005 This page is intentionally left blank...
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