Floscan TwinScan GPH/LPH Meter - Manual (Page 10)

2/15/2007 7000-036-00M
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
Mechanical Installation
Series 5400(0)/ 5500(0)/ 56100/ 7000(0)/8000(0)/ 9000(0), Single Sensor EFI 8A00(0)/9A00(0) and TwinScan
®
GPH Instruments for Gasoline Inboard/ I/O/ and Outboard Engines
FLOW SENSOR INSTALLATION
Flow Sensors must be placed in a horizontal section of fuel line at a low point in the fuel system. Fuel should travel, “Up-hill” when
exiting the sensor. Its outlet should be at least 1 or 2 inches lower than the fuel pump inlet, priming bulb or pulsation damper, (if
used). Pulsation Dampers and Priming Bulbs must also be mounted horizontally. Installing sensor(s) 12” upstream of the fuel pump,
priming bulb or pulsation damper improves system accuracy. Install sensors in a protected location, away from water spray.
Model 20A, 20B, 231, & 233C gasoline sensors must be installed downstream of a fuel filter or water separator. On vessels not
equipped with off engine filters, we suggest installing a Flow Ezy model ILA-02 filter with 238 micron screen directly to the 20A,
20B or 231 Low-Flow Sensors’ inlet. Use model 4ILA-04 with 595 micron screens with High Flow 233C Sensors’.
Flow Ezy can be reached at (800) 237-1165.
Caution: NEVER install sensor(s) downstream of an engine mounted fuel filter. NEVER use Teflon Tape when installing
sensors. Teflon Tape can jam a sensor’s rotor. Instead, always use a fuel proof pipe thread sealant.
For proper system operation, Carburetor Inboard & I/O Engines having diaphragm fuel pumps require Gasoline Pulsation
Dampers. FloScan Systems are not shipped with Pulsation Dampers’ as carburetor Inboard and I/O engines are no longer in
production. If you have a Carburetor Inboard or I/O engine, Pulsation Dampers can be purchased factory direct. Standard
Flow Dampers’ are $30.00 each. The standard Flow Damper can be ordered under Part Number 150-004-00 online at
www.floscan.com in the Accessories section.
E-mail: [email protected], or [email protected].
The following engine types DO NOT require Pulsation Dampers:
• Outboard Gasoline Engines Including Ficht, Optimax, 2 & 4-Cycle.
• Most Closed Loop EFI Gasoline Inboard, and I/O Engines.
• Sensors are marked with orientation and fuel flow arrows. They must be installed with these arrows pointing in the right direction.
Standard-Flow Pulsation Damper
ARROW UP
20A/ 20B/ 231 SENSOR
Outlet
Fuel Flow Direction
Inlet
ARROW UP