Pre-start check:

Charge each battery by not less than 12 hs before the start.

Do the cleaning of the turbojet's surrounding area.

Verify that the oil and fuel used are the correct ones.

Verify the oil level in the oil tank of the turbojet.

Verify the fuel level in the fuel tank.

Verify that the ties of the fixed frame (lateral and frontal) are correctly placed.

Verify the correct installation and operation of the data acquisition instruments (the thermocouple in particular).

Verify that the thrust meter works correctly.

Verify that the accelerator is installed correctly and moves smoothly throughout its stroke.

Verify that the three plugs of the power system connector fit correctly.

Use the auxiliary battery charger / car starter at the turbojet starting.

Start:

Make sure that the danger areas ahead and behind the turbojet are well cleared.

Make sure the starting switches number [1] and [2] of the command board are on the "no" position.

Verify that the accelerator is on the "minimum" end, that the JP1 tank's ventilation closing is open, that the JP1 tank's main passage valve is in the "cerrado" (closed) position and that the fuel valve located at the turbine fuel inlet is in the "abierto" (open) position.

a) Place starting switch number [1] of the command board on the "sí" (yes) position. The auxiliary electric start engine must begin to rotate and the auxiliary starting pump must send JP1 to the ignition torches.

b) After 7 seconds place starting switch number [2] of the command board on the "sí" (yes) position.

c) Observe the reading of the tachometer. At 1 200 RPMs open the JP1 tank's main passage valve. There must be a self increase of RPMs and gas jet exhaust temperature. The accelerator must not be moved.

d) At 5 000 RPMs approx. put first the switch [1] in the "no" position. Then do the same with switch [2]. Be careful to follow the auxiliary energy shut down sequence!

e) the regime becomes stabilized in "minimum" RPMs and the exhaust gas temperature reaches 500 °C approx.

"minimum" regulation @ 20 °C, 740 mm Hg pressure: 7 300 RPMs approx.

Verify during 30 seconds that the oil pressure and RPMs become stabilized; if they do not then stop the machine.

It is now possible to accelerate.

Observations:

If starting switch number [2] is on the "si" (yes) position at the moment of moving starting switch number [1] to the "sí" (yes) this surely will cause the breaking of the clutch of the auxiliary starting system!. Starting switch number [2] always must be on the "no" position at the moment of moving starting switch number [1] to the "sí" (yes) position!. Don't attempt to open the fuel valve without more than 800 RPMs. The turbojet won't reach the RPMs.' minimum working regime and will not start!

1) Keep the accelerator in "minimum" position all along the starting process.

2) Follow rigorously the RPMs starting sequence, even if the auxiliary starter engine works for more than 30 seconds.

3) The displacement of the accelerator must be done with a steady movement.

4) The minimum time of displacement between accelerator ends must be 15 seconds.

5) With accelerator at maximum end: N=22 600 (+50-100) RPMs; exhaust gas temperature=650 °C approx., oil pressure=4 (+-0.5) kgf/cm2.

Halting:

Place the accelerator on the "minimum" end.
Leave it at this speed during approx. 30 seconds.
Close quickly the main valve of the JP1 tank.
Wait until the machine halts.
Close the the fuel valve located at the turbine fuel inlet before unmounting the fuel lines.

Observations:

1) The displacement of the accelerator must be done with a steady movement.

2) With accelerator in minimum end: N=7 300 (+50-100) RPMs; exhaust gas temperature=500 °C approx; minimum oil pressure=0,5 kgf/cm2.

Ventilation:

Simply wait for a couple of minutes before retry the start to give time to the electrical starting engine to cool off.

Troubleshooting:

Oscillations in the tachometer from 1 000 to 3 000 RPMs and variations of the temperature of 20 °C to 50 °C.
Possible cause: air within the fuel circuit.

Maximum RPMs very low.

Possible cause: clogged fuel filter.

Abnormal oil pressure [must be 4 (+-0.5) kgf/cm2 for a lubricant temperature of 40 °C to 60 °C @ 22 600 RPMs].

Possible cause: air within the lubrication circuit.