J.P. Instruments Classic Scanner - Manual (Page 5)

INSTALLING THE EGT SCANNER
Page 5 of 5
Rev-D
Scanning Cylinder
(counting down)
Push to Dim switch
(Day I Night)
Adjustable scan rate
Option
Manual Mode switch
press to index
Hold in for voltage
option
(A) Automatic Mode
(B) Manual Mode
Actual size
11) Record of Installation
12) Instrument Operation
Upon firing up the engine the readings should reach 500.F 10 a matter of seconds.
(M)
MANUAL, when the toggle switch is in the (M) position the scanner will display
whichever cylinder it was on when the switch was changed. To change the
display press the STEP switch and the display will index. Normal leaning is
accomplished on the leanest cylinder in the Manual mode. The leanest cylinder
can be found by peaking each cylinder and noting its fuel consumption. The
cylinder with the largest fuel consumption at its peak is the leanest.
(A) AUTOMATIC, this switch position will scan all the cylinder probes every four to five
seconds in a countdown (descending) order. Pressing the step switch, In the automatic
mode, will index the unit 10 the next cylinder. Alarm only active in the Automatic mode.
(D)
DIMMING, is a press to change switch and has two levels Day and Night. It is
located in the upper right hand corner of the unit.
(c) A small ·c· displayed in the first digit ( c 3 7 0 ) indicates the unit is scanning
Cylinder Head Temperatures.
(.) A period in the second digit (1 . 4 5 0) with temperatures above 1000 F but less
than 1990, indicates that, that cylinder bas reverse polarity wiring ( must be corrected).
A display of ( 1.9 9 0 ) indicates that the temperature has gone beyond the normal range
of 1999 F.
(I) TWINS ONLY - A small light in the first digit ( ! 1470) before the temperature
reading indicates it is scanning the LEFT engine
(V) The voltage option will display VOLTAGE when the STEP switch is pressed in and held.
Voltage readings are in tents of volts.