Floscan Series 9700/97000 Standard Flow GPS Interface System (twin engine model) - Manual (Page 19)

Fuel Flow Schematic - Standard Flow Diesel Systems (BOS, 201, 231 & 235-2K)
Cooler
Return Fuel
Engine
Tank
Fuel Flow Direction
Filter
Forward Sensor
And Pulsation
Damper Assembly
Return Sensor
And Pulsation
Damper Assembly
FloScan
FloScan
Primary
THE RETURN FLOW SENSOR MUST
REMAIN FLOODED AT ALL TIMES.
PLEASE REFER TO STEPS 9-12 BELOW.
FloScan Sensor & Pulsation Damper Plumbing Guidelines:
*Caution: Diesel System Components are not designed for use on Gasoline Fuel Systems.
1. Before installing the assembled Flow Sensor & Pulsation Damper assembly’s into the fuel system, verify that their orientation
arrows are pointing UP Ï.
2. The Forward Flow Sensor / Pulsation Damper assembly must be protected by and installed downstream of a 10 to 30 Micron
Primary Filter. The forward assembly can be installed at any convenient location from the bottom of the bilge to the top of the
overhead.
3. NOTE: Always use the primary filter micron rating Specified by the Engine Manufacturer, (usually 10, 20 or 30). Do not
follow advice given by local experts, mechanics, or magazines. There are several reasons for avoiding 2 and 5 micron filters.
4. Filtered fuel must enter into the Forward Sensor through its Hex Flow Straightener on the port marked IN. Fuel must exit through
the Pulsation Damper port with an outward pointing arrow, (Î).
5. Return fuel from the engine, must enter into the Return Pulsation Damper’s inlet port. This is the port marked with an inward
pointing arrow, (Í) and exit through the port marked OUT on the Return Sensor.
6. Install the Forward & Return Sensor – Pulsation Damper assemblies as far from the engine as practical. Maximizing fuel line
length, between the engine and Sensor – Pulsation Damper assembly, improves instrument accuracy.
7. Use the smallest approved fuel line diameter for your engine, especially on the return line. Higher fuel flow velocities increase
overall system accuracy. Refer to the engine owners or shop manual for more information.
8. IMPORTANT NOTE: THE RETURN FLOW SENSOR MUST REMAIN FLOODED AT ALL TIMES.
9. If possible, install the Return Sensor – Pulsation Damper assembly at a low point in the fuel system.
(Continued on next page)
07/24/08 4001-443-00
FloScan Instrument Company, Inc. Tel: (206) 52
3016 NE Blakeley Street, Seattle, WA 98105 Email :
4-6625 Fax: (206) 523-4961
[email protected] Http://www.floscan.com
Return Sensor
And Pulsation
Damper Assembly
FloScan
45-Degree
Elbow Fitting
Return Sensor
And Pulsation
Damper Assembly
FloScan
3/8" JIC
Tube Assembly
(PART #231-058-00)
Return Sensor
And Pulsation
Damper Assembly
FloScan
Straight
Fitting