Route The (Optional) External Warning Control Line; Install The Instrument In The Panel; Connect The Circular Connector To The Instrument; Connect The Manifold Pressure Line - Electronics International M-1 Operating And Installation Instructions

Manifold pressure (primary replacement instrument)

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Route the (Optional) External Warning Control Line:

The white/yellow wire can be connected to an external light (AL-1), buzzer (ATG-1), voice annunciator (AV-

17), a relay, etc. This wire grounds when the red warning light is on. The current in this line must be limited to 2/

10 of an amp maximum. Exceeding this limit will damage the unit. If this feature is not used, leave this line

open. Tie wrap this wire so it does not obstruct the freedom of travel of any controls.

Tie wrap this wire so it does not obstruct the freedom of travel of any controls.

Install the instrument from behind the instrument panel using 6 x 32 screws. These screws should not be any

longer than 1/2".

1) Push the two mating connectors together and twist them until they snap into position.

2) Turn the locking ring on the instrument connector clockwise (1 1/2 turns) until it locks into position.

Connect the aircraft manifold pressure line to the pressure port on the back of the instrument. Be sure this

line is tight. This pressure port is a 1/4" flare union and is standard for most manifold pressure gauges. Care

should be taken not to put excess pressure on the flexible line between the flare union and the pressure transducer

mounted on the back of the instrument. The Pressure Transducer Port can break. Make sure the flexible pres-

sure line does not have any kinks.

Note

Note: : : : : Some aircraft have a very small hole in the maniflold pressure line to create an airflow in the line. This

Note

small flow of air keeps fuel from working its way into the manifold pressure gauge or tranducer whitch can cause

damage over time.

Pressure Transducer.

.170 ID Flexible Line.

Back of Unit.

Pressure Port.

Make sure the flexible pres-

Aircraft Manifold Pressure

Line.

Rev. C: 9/30/97

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