Eis Engine Run-Up Checks - Garmin GI 275 Installation Manual

6.5.3.7 Shunt and Voltage Sensor Checks
1. In Normal mode, verify all intended gauges are available.
2. Verify that the gauge(s) show the correct aircraft voltage and amperage with the engine off.
NOTE
An alternator load meter may indicate a small current if the alternator field is on.
6.5.3.8 OAT (EIS) Check
This check only applies to standalone GI 275 EIS units with an interfaced OAT sensor.
NOTE
If the GI 275 EIS is interfaced to a PFD, the OAT sensor must be interfaced to that PFD
and not to a GEA.
1. In Normal mode, navigate to the AUX EIS page and touch a configurable field button.
2. Select OAT(EIS) and verify that the field displays the correct outside air temperature.
6.5.4

EIS Engine Run-up Checks

An Engine Run-up Check must be performed to ensure proper installation and configuration of the EIS
sensors and gauges. Always follow engine start-up procedures as provided in the aircraft POH.
CAUTION
If the engine indications are not within operating specifications shortly after starting,
IMMEDIATELY shut down the engine and troubleshoot the problem. Failure to do so may
cause engine damage.
1. Obtain an optical tachometer to monitor propeller RPM.
2. Place the aircraft in an open and clear area appropriate for an extended engine run-up.
3. Follow the engine start-up procedure as outlined in the aircraft POH. Adhere to the required
observations immediately following the start, such as oil pressure within 30 seconds.
4. For twin-engine aircraft, verify the appropriate engine gauges respond corresponding to the correct
side (left/right or front/rear).
5. Verify the EIS RPM gauge(s) match the optical tachometer reading ±50 RPM.
6. Allow the engine to warm-up and oil temperature to increase to at least 100°F.
7. Verify the engine oil pressure gauge is reading within the green arc.
8. Verify the EIS RPM gauge matches the optical tachometer reading ±50 RPM during all phases of
the engine run-up.
9. Verify the alternator load meter (if installed) and battery charge/discharge ammeter (if installed)
indicate a positive load.
10. Perform individual magneto checks as specified by the aircraft POH. If the RPM does not drop as
expected when switching from both magnetos to one, the P-lead, ignition switch wiring, or
magneto timing is incorrect. Discontinue the test immediately and repair the ignition system.
11. Perform the engine pre-takeoff run-up checklist in accordance with the aircraft POH.
12. Verify all EIS readings are consistent with normal operation performance.
13. Verify all installed sensors and fittings are free of leaks.
190-02246-14
Rev. 11
GI 275 STC EIS & MFD Installation Manual
Page 6-16