JPI EGT-701 Installation Manual page 2

FAA APPROVED
INSTALLING THE EGT-701 SCANNER®
The following notes apply to a new installation. Read this section before proceeding.
a) The JPI warranty found in the back of the pilots guide clearly states that JPI will replace defective parts
under warranty, but does NOT cover labor to remove or install any parts.
b) To prevent damage to the display it is essential that the four mounting screws not penetrate the
instrument more than 0.12 inches. Damage caused by screw penetration is not covered under
warranty.
c) You must be an FAA certified aircraft mechanic to install this instrument.
d) Check that any necessary FAA approvals (STC's, etc) are available for the aircraft before beginning the
installation.
e) The most common cause of probe problems is poor terminal crimps. Crimp ring terminals with AMP part
45518 crimp tool or equivalent. Fold back the wire double before crimping terminals.
Thermocouple wire harness
f) This installation will require some parts unique to your aircraft that are not supplied with the kit,
(including but not limited to tie-wraps, hoses and fittings). Acquire all the necessary parts prior to
beginning the installation.
g) Do NOT use aluminum fittings with the FXT-201 or FXT-231 fuel flow transducer.
h) Write down the K-factor engraved on the side of the fuel flow transducer here _______. Once the
transducer is installed and covered with the fire sleeve, you will not be able to access this K factor.
i) Determine the locations of all holes before drilling to ensure that nothing interferes with the probe,
clamp, clamp screw or wire.
j) Provide service loops at the instrument.
k) Thermocouple wire length is not critical. Trim to required length, allowing for service loops at the engine
so that probes can be swapped with probes on adjacent cylinders for troubleshooting purposes.
l) Dress all wires away from high temperature components such as exhaust stacks.
m) Never splice thermocouple wire using copper wire. Use only K-type thermocouple wire. Solder using
zinc chloride flux such as Nokorode brand – rosin flux alone won't work.
n) Observe correct polarity on all probe wires. Connect like colors together (red to red, yellow to yellow).
o) This instrument must be grounded at the engine, not at the avionics ground.
p) If a spark plug gasket probe is used, expect the CHT reading on that cylinder to be somewhat higher
than on the cylinders with bayonet probes. At additional cost an adapter probe (bayonet or screw-in) is
available that permits the factory CHT probe and the JPI probe to be placed in the same bayonet
location.
INSTALLATION MANUAL FOR THE EGT-701 Report 103
READ THIS FIRST
1/20/09
2 1/4"
yellow
red
1/4" 1 1/2"
Rev-E Page 2 of 30
Fold back wire
double before
crimping terminals