Floscan Series 9700/97000 Standard Flow GPS Interface System (twin engine model) - Manual (Page 36)

8/30/2004 7000-074-00D
FloScan Instrument Company, Inc. Tel: (206) 524-6625 Fax: (206) 523-4961
3016 NE Blakeley Street, Seattle, WA 98105 Email: [email protected] Http://www.floscan.com
2. With engine(s) running and the Instrument in diagnostic mode, the GPH window shows raw, (un-calibrated) fuel flow through the
Forward Sensor. The GALLONS window shows raw fuel flow through the Return Sensor. Calibration adjustments do not affect
diagnostic mode readings.
Example:
3. Using the chart below, record GPH and Gallon readings at IDLE, 1000 RPM, 1500 RPM and 1800 RPM. Circle S or F to indicate
steady or fluctuating readings.
GPH GALLONS
S F IDLE S F
S F 1000 S F
S F 1500 S F
S F 1800 S F
4. With engine(s) idling, record Engine Hour Window readings at these upper BLACK switch positions.
Upper BLACK switch position: 0 ______________ Differential flow 2 ______________ Feed K-Factor
1 _______ _______ Temperature (C °) 3 ______________ Return K-Factor
(Temp Comp units only)
5. Measure fuel-line length between system components and draw a system sketch.
Turn Instrument power OFF, then ON to return system to normal operation. Do not touch the reset switch with all 8s showing.
II. SUPPLY VOLTAGE and GROUND TEST
1. Measure voltage between the RED power wire on pin 9, and the BLACK Instrument ground wire on pin 5. It
should read approximately 12 to 14 VDC, but not lower than 10 VDC. __________VDC
2. If 12 VDC is not present, measure between the RED power wire on pin 9 and a known good ground in the
instrument panel. If 12 to 14 VDC is present between the Red wire and ground, there may be a loose
instrument ground connection or other wiring problem.
__________VDC
NOTE: Some applications use both pins 1 and 9 for Instrument power.
3. If 12 to 14 VDC is not present in steps 1 or 2, check wiring, switches, fuse, and the 12 VDC power source.
III. LED BACK-LIGHTING WIRING TEST
1. Measure voltage between the ORANGE, wire on pin 4 and the BLACK wire on pin 5, for 75/7600(0) and
85/8600(0) series Instruments. On 95/9600(0) series Instruments, measure between pin 4, and the
BLACK/ORANGE wire on Pin 12.
__________VDC
2. If 12 VDC is not present, measure between the ORANGE wire on pin 4 and a known good ground in the
instrument panel. If you measure 12-14 VDC, there is a power supply problem to pin 4, or a ground
connection problem to pins 5 or 12.
__________VDC
IV. SENSOR(S) TEST
1. With engine(s) idling, measure and record voltage between the RED power and BLACK ground wires on the
Forward Sensor. Voltage should be 12 to 14 VDC. ___________VDC
2. Move the voltmeters’ negative lead to the WHITE signal wire. With engine idling, measure and record the
voltage. Readings between 4 and 10 VDC usually indicate a good sensor. ___________VDC
3. Stop the engine while observing your voltmeter. Readings should fluctuate between a high of 9 to 12 VDC,
and a low of 0 to 4 VDC as the sensors’ turbine slows to a stop. ___________VDC
G P H
- 5 9 .3 6 0 .7
G A L L O N S