Philips Efficia DFM100 - Repair Philosophy; Calling for Service; Key Components

3: Troubleshooting Components Troubleshooting
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5 Squeeze the manometer pump and apply a pressure of 150mmHg.
6 Observe the pressure displayed on the screen and record this result as X1. The value should be
150mmHg
± 3mmHg.
7 Squeeze the manometer pump and apply a pressure of 250mmHg.
8 Observe the pressure displayed on the screen and record this result as X2. The value should be
250mmHg
± 3mmHg.
9 Press Stop Testing to stop the test.
10 If the difference between the manometer and the displayed value is greater than 3 mmHg, replace
the NBP module.
11 If the results is as described, the device passes accuracy test. Return to the Service Mode Main menu
by pressing the Main Service soft key.
NBP Safety Features
The NBP module is equipped with the Overpressure safety features that prevent injury to the patient and
damage to the device.
NBP Overpressure
The NBP module overpressure occurs when the cuff pressure reaches 295 mmHg. Do not raise the
pressure in the cuff to more than 280 mmHg during the test.
The safety features cause the valve to open and the pressure to drop.
Leakage Test
Regardless of your configuration settings, millimeters of mercury are the unit of measure for pressure in
the Efficia DFM100 calibration.
 To test the NBP module for leaks:
1 Squeeze the manometer pump and apply a pressure of
250mmHg/33.3Kpa/333mb/4.83psi/0.329atm/9.84inHg.
2 Wait for 30 seconds to allow the pressure in the unit to equalize.
3 Watch the displayed pressure for 60 seconds.
4 Record the pressure drop at the end of 60 seconds.
5 If the pressure decreases by more than 6 mmHg, there is a leak. Replace the tubing and chamber
assembly and try the leakage test again. If the pressure still decreases by more than 6 mmHg, begin
troubleshooting and repairing the device as needed.
Release the pressure in the chamber before proceeding to the next test.
Table 22 NBP Monitoring Problems
Symptom Possible Causes Suggested Solution
message • Excessive patient movement
• Hose or cuff kinked or leak
Ensure the user applies correct procedure
• Air tube inside the device failure
• Defective NBP hardware
• Defective I/O PCA
• Reconnect the air tube
• Replace NBP module
• Replace I/O PCA
message External pressure on the cuff
during the measurement
Do not touch the cuff during the
measurement