physa EIU1-1 Original instructions

1
Part Number 18159,A, 03/20/2020
Gasoline Fume Monitoring Unit
EIU1-1
Owner’s Manual
&
Installation Instructions
Read and comply with all instructions, warnings and limitations before
installing, servicing or removing this device.

2
Part Number 18159,A, 03/20/2020
Additional copies of this manual are available at no charge by contacting the manufacturer,
distributor or dealer. Physa Marine reserves the right to change features without notice.
General Information
3
Specifications
3
Operation of Physa Marine EIU1-1(s)
4
Installation
6
Installing the EIU1-1 Unit
6
Installing Gasoline Fume Sensor(s) (FS-T01)
7
Routing Sensor Lead(s)
7
Electrical Connections
7
Testing the System Operation
8
Testing the Gasoline Fume Sensors
8
Maintenance
8
In the Event of an Alarm
8
Repairing Physa Marine EIU1-1 Components
9
Returning Physa Marine EIU1-1 Components
9
1 Year Limited Warranty
10

3
Part Number 18159,A, 03/20/2020
General Information
WARNING
GASOLINE FUME DETECTORS ARE MEANT TO SERVE AS A SUPPLEMENTAL WARNING SYSTEM. IT
IS NOT MEANT TO REPLACE STANDARD SAFETY PRACTICES WHICH SHOULD BE CARRIED OUT
AROUND EXPLOSIVE FUMES.
The Gasoline Fume Monitoring Unit is an effective means to monitor gasoline fumes in an engine
compartment or bilge and inhibit the engine’s starter in the event gasoline fumes reach the lower
explosive limits (LEL). The system uses a sensor, located in a place of interest and a central display
unit that notifies the operator and inhibits the engine starter, minimizing the possibility of igniting
the gasoline fumes.
Specification
System Specifications
Operating Voltage: 9-18 VDC
Nominal Current Draw: 113mA @ 9 VDC
Maximum Current Draw: 133mA @ 9 VDC
Operating Temperature: -40°F (-40°C) to 158°F (70°C)
Alarm Horn: ≈ 68dB
Output: 5A Max

4
Part Number 18159,A, 03/20/2020
Operation of Physa Marine EIU1-1(s)
There are 5 LEDs located on the Unit indicating the status of the system. The Green “Enabled”
LED indicates that the ignition circuit to the engine starter is CLOSED. The Red “Disabled” LED
indicates that the ignition circuit to the engine starter is OPEN.
The Green “Monitoring” LED indicates the system is operational. The Amber “Sensor Trouble”
LED indicates that there is trouble with the sensor. This is to notify the user to check the
connections and wire runs of the sensors. There may be a break in the wiring or a disconnected
sensor. The Red “Fumes Detected” LED indicates a fume buildup of at least 20% of the LEL (Lower
Explosive Limit) which is considered an alarm. The alarm horn will sound, and the engine starter
will be inhibited when this LED is illuminated.
The alarm status will continue as long as fume levels remains at an elevated level. The alarm horn
may be silenced by pressing the “Silence” button. The problem should never be considered
corrected as long as the Red LED is illuminated.

5
Part Number 18159,A, 03/20/2020
EIU1-1
FS-T01
RED –Power (+)
BLACK –Power (-)
20.0 Amp Fuse
YELLOW –Engine Start
YELLOW –Engine Start

6
Part Number 18159,A, 03/20/2020
Installation
Installing the EIU1-1 Unit
Use the appropriate #10 mounting hardware to mount the EIU1-1 in the desired location using
the four (4) provided mounting holes.
Installing the EIU1-1 Unit with Optional Mounting Bracket
Use the provided mounting hardware to mount the EIU1-1 to the Mounting Bracket using the four
(4) provided mounting holes.
The Unit should be located near the engine that it will be inhibiting. Remove the Flange Clip form
the Mounting Bracket and install it on a stationary plate or bracket on the engine with a thickness
of 1/8” (3mm) to 1/4” (6mm) with the threads facing out. Tighten the Set Screw in the Flange Clip
until it is tight to the plate/bracket. Install the Unit so that the Flange Clip threads and Set Screw
are centered in the slot of the Mounting Bracket. Secure the Unit to the Flange Clip by threading
Flange Nuts on both the Set Screw and Flange Clip threads. Tighten the Flange Nuts in place.

7
Part Number 18159,A, 03/20/2020
Installing Gasoline Fume Sensor(s) (FS-T01-S)
The Gasoline Fume Sensor should be located in the Bilge, just above the “Slosh Line”. A good rule
of thumb is to install no lower than the height of the starter solenoid. Avoid locating sensors near
manifold or exhaust systems, as high heat may damage the sensor.
Use the appropriate #8 mounting hardware to mount the Gasoline Fume Sensor in the desired
location. The rubber gasket should be installed between the sensor and the mounting surface.
Connect to the Sensor Lead using the attached quick-disconnect connectors.
Routing Sensor Lead(s)
A 9’(3M) Sensor Lead is provided for each Gasoline Fume Sensor. The Sensor Cables should be
routed starting at the Unit, then to the pre-determined location of the Gasoline Fume Sensor.
Take care not to pinch, break, or cut the Sensor Cable or put too much stress on the connectors
while routing the cable. Secure the Sensor Cable with the appropriate hardware for the
application.
NOTE
DO NOT CUT EXTENSION CABLE FOR ANY PURPOSE. DOING SO VOIDS THE PRODUCT’S
WARRANTY. EXTENSION CABLES ARE AVAILABLE FROM 20’(6.1M) TO 100’(30.5M).
Electrical Connections
The Unit operates on 9-18 VDC. A Red and a Black 14 GA wire with ring terminals are provided for
connecting to the power source. Connect the Red wire to Power (+). Connect the Black wire to
Ground (-).
Cut the ignition wire at the solenoid leaving approximately 8” (200mm) at the connection lug.
Connect one of the ignition wires to one of the yellow wires with the preinstalled butt splice using
an insulated Crimp tool. Repeat process for the other ignition wire.
NOTE
IMPROPER CONNECTIONS WILL DAMAGE THE UNIT AND WILL VOID WARRANTY.

8
Part Number 18159,A, 03/20/2020
Testing the System Operation
The Unit can be tested by pressing the “Test”button on the face of the Unit. The Unit will cycle
through the LEDs .
Unplug the Gasoline Fume Sensor. The Amber “Sensor Trouble” LED will illuminate. If the Amber
LED does not illuminate, remove Unit and return direct to manufacturer following the instructions
at the back of this manual.
Testing the Gasoline Fume Sensors
WARNING
DO NOT USE A GASOLINE SOAKED RAG OR A PARTIALLY FULL CONTAINER OF GASOLINE TO TEST A
SENSOR. THE RAW GASOLINE COULD IGNITE, RESULTING IN SERIOUS INJURY.
Test the Sensors by holding an unlit Butane lighter to the sensor. Within a few seconds, the Red
“Fumes Detected” LED will illuminate, the alarm horn will sound, and the engine starter output
will turn OFF. Remove the lighter from the Sensor and press the “Silence” button to mute the
alarm horn. Test that the engine is not able to start. Lift the safety cover and activate the “Bypass
Switch”. Test that the engine is able to start. After approximately one minute, the Red LED will
turn off and the Unit will return to its normal state of operation.
Maintenance
The system should be tested periodically in the fashion described in the previous sections. Due to
the harsh environmental conditions in marine applications, it is recommended to replace the
Gasoline Fume Sensors every 3-4 years.
In the Event of an Alarm
Immediately have all passengers and crew exit the passenger compartment and vessel if possible.
Ventilate the space being monitored.
Carefully check all fuel lines and other potential sources of gasoline fume leaks. If leaks are
identified, shut off fuel supply and make any necessary repairs.
WARNING
DO NOT BYPASS THE ENGINE START INHIBITOR UNLESS THE REQUIRED REPAIRS HAVE BEEN
MADE. THE GASOLINE FUMES COULD IGNITE, RESULTING IN SERIOUS INJURY.

9
Part Number 18159,A, 03/20/2020
Repairing Physa Marine EIU1-1 Components
Physa Marine EIU1-1 Components are not field serviceable. Components must be returned to the
factory for any repairs.
Returning Physa Marine EIU1-1 Components
No product may be returned for credit or repair without a written “Returned Material
Authorization” (RMA) form. Purchaser must email Physa Marine at PhysaMarine.com for an RMA.
If due to extenuating circumstances a product is to be returned after approval, it must be received
in 100% new/resalable condition. Products stored by the buyer for more than 26 weeks may not
be returned for any reason. Maintaining fresh and current inventory is the responsibility of the
buyer.

10
Part Number 18159,A, 03/20/2020
1 Year Limited Warranty
This Warranty is in lieu of all other expressed or implied Warranties
Seller warrants title, materials and workmanship on equipment, except components
manufactured by others for which the Seller assigns, as permitted, the original manufacturer’s
warranty. Seller’s warranty shall be for a period of (1) one year from the date of sale to the
ORIGINAL CONSUMER PURCHASER, during which non-conforming equipment returned to the
Seller at Buyer’s expense and risk may be repaired or replaced at the Seller’s option. Physa Marine
will repair or replace products found to be defective in materials or workmanship within the
period set forth above, provided that: (a) the product has not been subjected to abuse,
contamination, neglect, accident, incorrect wiring not our own, improper installation or servicing,
or used in violation of instructions furnished by Physa Marine and (b) as to any prior defects in
materials or workmanship covered by this warranty, the product has not been repaired or altered
by anyone except Physa Marine and (c) the serial number has not been removed, defaced or
otherwise changed, and (d) examination discloses, in the judgment of Physa Marine, does not
assume the costs of removal and/or installation of the product or any other incidental costs of
removal and/or installation of the product or any other incidental costs which may arise as a
result of any defect in material or workmanship, and (e) upon discovery of defect, Buyer shall
immediately cease use of and notify Physa Marine.
Any warranty implied by law, including warranties of merchantability or fitness, is in effect only
for the duration of the expressed warranties set forth above, no person is authorized to give any
other warranty, or to assume for Physa Marine any other liability in connection with the sale of its
products; Physa Marine shall not be liable for the loss of use, revenue, or profit or for any injury,
or for any other consequential or incidental damages, buyer is not relying on seller’s judgment
regarding his or her particular requirements and has had an opportunity to inspect the product to
his or her satisfaction.
This warranty gives you specific legal rights and you may also have other rights, which vary, from
state to state.
www.PhysaMarine.com
Telesafe ,LLC dba Physa Marine
Cadiz, KY 42211
616-259-5355
[e-mail]