GE S5 Owners Manual

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Document no. M1215098-002
3.3 Disassembly and reassembly
3.3.1 Before disassembly
WARNINGWear a grounded, antistatic wristband when handling PC boards. 
Electrostatic discharge may damage components on the board. 
Handle all PC boards by their edges.
3.3.2 Tools needed
CAUTION When reassembling the module, make  sure to reconnect all cables properly.
3.3.3 To disassemble the module
- torx screwdrivers; T6, T8
- flat blade screwdriver
-pincers
- antistatic wristband
1. Remove the four screws (T8) holding the module cover to the  frame from the bottom of the module. 
2. Hold the cover from the back corners, lift it about 45° to  unlock the snaps from the front unit and pull the cover out 
backwards. 
NOTE: Be careful not to damage the seal. When reassembling 
the seal may stick to the cover. 
						

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3. To remove the NIBP board:NOTE: You may remove the NIBP filter cover and the filter before 
disconnecting the flex cable.
- Disconnect the module bus co nnector, pump connector and 
NIBP flex connector. 
- Disconnect the hoses (2 pcs) coming from the manifold.
NOTE: Note the positions of the hoses; mark them if necessary 
to ensure they are replaced correctly.
- Remove the NIBP board.
4. Disconnect the air intake hose from the NIBP manifold. 
NOTE: The lips of the insulator  plates secure the module bus 
connectors. While reassembling the insulator plates, ensure 
that the connector secure lips support the connectors correctly. 
						

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5. Lift the NIBP-STP insulator plate carefully up. 
6. To remove the STP board
- Carefully open the connector lock and then disconnect the  STP input flex cable from the STP board.
NOTE: When reassembling, ensure that the flex cable is aligned 
properly and the connector is locked.
- Lift the STP board a little to disconnect the module bus  connector. Remove the STP board.
7. Remove the STP-ECG insulator plate. Be careful not to  damage the NIBP hoses.
8. Hold down the ECG board. Carefully open the connector lock  and then disconnect the ECG input flex cable from the ECG 
board.
NOTE: When reassembling, ensure that the flex cable is aligned 
properly and the connector is locked. 
						

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Reassemble the module in reverse order.
Always perform the  “Service check” after reassembling the module.
9. To remove the ECG board
- While holding the ECG input unit out of the way, lift the ECG 
board a little and disconnect the module bus connector.
- Remove the ECG board.
10. Remove the NIBP filter cover and the filter. (If not removed  already.)
11. Remove the four screws (T6)  with washers holding the NIBP 
pump to the frame.
12.  Flip the module over and remo ve the two (T6) screws holding 
the lock unit to the frame. While pulling the tab push the 
lockers with a screwdriver  to remove the lock unit.
13. Carefully lift up the front uni t together with the NIBP pump. 
						

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To remove the pump unit
14. Disconnect the hoses from the manifold. The hoses follow the pump.
3.3.4 To remove the manifold unit
15. Disconnect the two (T6) screws holding the manifold to the front cover unit.
16.  Open the connector lock from the NIBP flex  board and disconnect the membrane 
keyboard flex.  
						

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17. Lift the manifold carefully aside. Be careful 
not to damage the NIBP flex board. 
Disconnect the NIBP flex board connector 
from the STP input board.
NOTE: When reassembling, make sure that the 
NIBP flex board connecto r is connected properly 
(all pins connected) to the STP input board.
Reassemble the module  in reverse order.
Always perform the  “Service check” after reassembling the module.
  
						

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Document no. M1215098-002
Reassemble the module in reverse order. 
Always perform the  “Service check” after reassembling the module.
3.3.5 To remove the module bus connector
18. Use a flat blade screwdriver to unlock the 
module bus connecto r insulator cover. 
Put the screwdriver in the hole and move the 
blade backwards (away from the flex cable) 
until the insulato r cover unlocks.
19. Pull the module bus connector carefully  through the hole in the frame. 
						

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3.3.6 To replace the NIBP filter
Reassemble the module in reverse order.
Always perform the  “Service check” after reassembling the module.1. Follow the disassemble instruction steps 1 
and 2.
2. Remove the NIBP filter cover and replace the  filter. 
						

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3.4 Adjustments and calibrations
NOTE: Use only properly maintained, calibrated and traceable measurement equipment for the 
specified calibrations and adjustments to ensure accuracy.
3.4.1 NIBP calibrations
The electronics of the NIBP pressure measurement is calibrated at the factory. The processor 
automatically maintains the zeroing pressure. If the zero point of the pressure transducer drifts 
more than specified, an error message is given and the NIBP board should be recalibrated or 
replaced.
Recalibrate the NIBP measurement once a year. The checking and recalibration can be done in 
the NIBP service menu.
The calibration of the primary pressure channel can also be checked from the NIBP setup 
menu ( NIBP - NIBP Setup - Calibration Check). In this case, the auto zeroing is performed at 
start - remove the hose before entering to ensure atmospheric pressure to the pressure 
transducers - the primary pressure is displayed. The zero-offset value should then be zero.
Check the intake air filter as part of the calibration  check. Change the filter if it is visibly dirty.
Calibration check
1. Enter Calibration  menu:
Monitor Setup - Install/Service  (password 16-4-34) - Service (26-23-8) -  Parameters - 
NIBP - Calibrations
2. Select  Calibration Check and push the ComWheel.
3. Connect an external precision manometer to the module.
4. Pump the following pressures to manometer and check the difference between the  manometer and monitor pr essure display (The zeroing offset is automatically subtracted 
from the pressure readings).
PRESTN_calib_menu.vsdPRESTN_calib_menu.vsd 
						

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Table 3 NIBP calibration check pressures
If the error of pressure channel B1 is larger than specified above, the module should be 
recalibrated. The error of B2 is allowed to be even twice as large because it has no effect on 
blood pressure measurement accuracy. Howeve r, we recommend recalibrating the module 
when the error of B2 is larger than spec ified above to ensure best possible operation.
Calibration
1. Enter Calibration  menu.
2. Remove the hoses from the front pane l connector to enable proper zeroing.
3. Select  Calibration. If it is not available, perform the steps a, b, and c.
NOTE: Do not pull out the hemodynamic module  from the monitor frame. The module must be 
in the frame during the whole procedure.
a. Press the hemodynamic module buttons 
Auto ON/OFF  and Start Cancel 
simultaneously for 3 seconds to enable the calibration. This enables menu selection 
Protection . The message ‘Calibration switch ON!’ is displayed.
b. Select  Protection OFF  in the Calibration  menu and push the ComWheel.
c. Press the buttons again for 3 seconds. Menu selection  Calibration is now enabled, and 
Protection  is disabled. When the calibration is enabled, a message ‘Calibration not 
protected’ is displayed.
•Start calibration by pushing the ComWheel . Messages ‘Zeroing’ and ‘Zeroed’ will be 
displayed in the NIBP message field. After this , a pressure bar and text ‘Calibrating’ will be 
displayed.
•Connect an external mercury manometer with  a pump to the module through the both 
tubes of the hose - both transducers B1 and B2 must be calibrated simultaneously. Pump 
up to a pressure of about 200 mmHg according to the manometer. Calibration is possible 
in the range of 150 to 250 mmHg.
•Verify that both pressure values in the prom pt field match the manometer reading. If not, 
adjust by turning the ComWheel. When the values of the pressure bar and the 
manometer are equal, push the ComWheel to confirm the calibration. The message 
‘Calibrated’ will be displayed on the NIBP digit field after a few seconds, which means that 
the calibration succeeded, and the new calibration data is saved in EEPROM.
NOTE: When calibrating NIBP, always change th e displayed pressure value slightly with the 
ComWheel, even in cases where the value woul d be correct. For example, change the value 
one step higher and then back one step lower. ‘Calibrated’ text should appear in the display. 
This ensures that the calibration procedure is correctly registered and stored by the module.
•To set the protection on:
Press NIBP module buttons 
Auto ON/OFF  and Start Cancel simultaneously for 3 
seconds. Select  Protection ON and push the ComWheel. Then press the buttons again for 
three seconds.
Pressure Max. error Example
0 mmHg ±5 mmHg (=zero offset) -1
100 mmHg 100 ±2 mmHg 100 ±2
200 mmHg 200 ±3 mmHg 200 ±3
260 mmHg 260 +/-3 mmHg  200 ±3