Electronics International OPT-1 - Manual (Page 7)

6. Check that the limit information on this instrument matches the published limits in your aircraft's
P.O.H. or Flight Manual. Also, this information may be listed in the T.C. Data Sheet for your
aircraft. Any AD's and/or STC's may set forth additional limitations on the operation of your
engine. The limit information listed in the AML is for unmodified aircraft and is intended for
reference only. It is the aircraft owner's and/or installer's responsibility to determine
It is the aircraft owner's and/or installer's responsibility to determine It is the aircraft owner's and/or installer's responsibility to determine It is the aircraft owner's and/or installer's responsibility to determine It is the aircraft owner's and/or installer's responsibility to determine
proper instrument calibration and range markings for your aircraft. proper instrument calibration and range markings for your aircraft. proper instrument calibration and range markings for your aircraft. proper instrument calibration and range markings for your aircraft. proper instrument calibration and range markings for your aircraft.
On the front of this instrument you will find two red lights marked with the maximum oil pressure
and temperature information. If there are any additional red or yellow lights on this instrument, the
operating range of these lights can be found on a sticker located on the side of the instrument (see
the AML at the back of this manual to decode this information). This instrument designates any
"Caution Range" with yellow LEDs, any "Maximum and Minimum Limits" with Red LEDs and the
"Safe Operating Range" with green LEDs. The "Safe Operating Range" on this instrument is
equivalent to the green "Normal Operating Range" and any unmarked areas on a analog gauge.
Do not attempt to remove or replace the limit information on this instrument. If the oil pressure or
temperature limits for your engine do not match those which are marked on this instrument send
this unit back to Electronics International Inc. for recalibration. DO NOT install or use a primary
engine instrument that is not properly calibrated for your aircraft.
7. Before starting the installation make sure the unit will fit in the location you intend to install it
without obstructing the operation of any controls.
8. If this instrument is to replace an existing unit in the aircraft, it is the installer's responsibility to
move or replace any existing instruments or components in accordance with FAA approved meth-
ods and procedures. The following Installation Instructions do not cover moving or the removal of
any existing instruments or components.
Route The Circular Connector: Route The Circular Connector: Route The Circular Connector: Route The Circular Connector: Route The Circular Connector:
Starting from under the instrument panel, route the circular connector wire harness up to the instru-
ment mounting location. (See the wiring diagram at the back of this manual). Place the circular connector
about 8 inches back from the panel. Tie wrap the harness in place approximately 1 foot back from the
circular connector. This will allow the harness to be flexible and accommodate varying lengths in instru-
ment wires. Be sure these wires do not obstruct the freedom of travel of any controls.
Be sure these wires do not obstruct the freedom of travel of any controls. Be sure these wires do not obstruct the freedom of travel of any controls. Be sure these wires do not obstruct the freedom of travel of any controls. Be sure these wires do not obstruct the freedom of travel of any controls.
Route the Power and Ground Wires: Route the Power and Ground Wires: Route the Power and Ground Wires: Route the Power and Ground Wires: Route the Power and Ground Wires:
In the wire harness is a 6 foot red and black wire used for the pressure transducer and a 3 foot red and
black wire use for instrument power and ground. Route the 3 foot red wire in the harness to the aircraft’s
12 or 24 volt main or emergency bus as applicable via an independent circuit breaker (five amps or less).
An alternate method would be to route the red lead to the bus via a one amp in-line fuse. With this method
a spare fuse should be kept in the aircraft.
Route the 3 foot black wire in the harness to a good ground . Tie wrap these wires so they do Tie wrap these wires so they do Tie wrap these wires so they do Tie wrap these wires so they do Tie wrap these wires so they do
not obstruct the freedom of travel of any controls. not obstruct the freedom of travel of any controls. not obstruct the freedom of travel of any controls. not obstruct the freedom of travel of any controls. not obstruct the freedom of travel of any controls.
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Rev: B 6/3/94