MARINE TECHNOLOGIES SAFE-T-ALERT MGD-1 User manual

PROCEDURES TO TAKE DURING AN ALARM
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WARNING: THE ACTUATION OF THIS DETECTOR INDICATES THE
PRESENCE OF DANGEROUS LEVELS OF GASOLINE FUMES/VAPORS
THAT COULD CAUSE AN EXPLOSION OR FIRE IF NO ACTION IS TAKEN:
1) Turn off all electrical equipment, generator, extinguish all open flames (oven,
cook top, smoking materials etc.).
2) Turn off the engine(s) if safe navigation conditions exist.
3) Open the engine compartment, ports, hatches and doors and ventilate the area.
4) If you are at shore evacuate the boat. Do not return until the area is ventilated
and the detector has returned to normal standby condition.
5) Proceed with caution and locate and repair the cause of the leak. Seek a
qualified technician if necessary.
6) Do not start or use the boat until the necessary repairs were made.
TROUBLE SHOOTING GUIDE
YELLOW LED Won’t Turn ON/OFF when pressed Wire connections, missing or blown fuse, reversed wires, or
defective unit
Locked in WAIT (more than 4-5 minutes) Replace Sensor Block SA-186-SB
No Beep and WARNING (RED) Lights Blink Return for repair or replacement
When TEST/MUTE is Pressed
Alternate Blink on RED GREEN Lights No communication with sensor block, check for RED LED
light ON at Sensor block, if on return for repair or replacement.
SPECIFICATIONS
Power Supply: 12 VDC Operational Voltage: 8 to 15 VDC Power Draw: 100mA amps @ 1VDC
Operating Temp: -220F - 1600F Alarm Threshold: < 20% LEL of Gasoline Fumes / Vapor
Other Gases Detected: Alcohol, Acetone, Hydrogen and most other Hydrocarbon gases
LIMITED PRODUCTS WARRANTY
MTI INDUSTRIES, INC. Warrants to the original purchaser that this detector will be free from defects of material or
workmanship for a period of Two (2) years. If proven to have been defective in original materials or workmanship and
returned, delivery costs prepaid, MTI INDUSTRIES, INC. will repair or replace this product free of charge.
LIMITS OF WARRANTY
Repair or replacement is your exclusive remedy under this limited warranty or any other warranty (including any implied
warranty of merchantability for a particular purpose). Any and all implied warranties or merchantability or fitness for a
particular purpose shall be limited to the warranty period from the original date of purchase. MTI INDUSTRIES, INC., its
dealers and distributors shall in no case be responsible or in any way liable for any incidental or consequential damages for
any reason. Some states do not allow the limitation or exclusion of incidental or consequential damages or allow limitations
on how long an implied warranty lasts, so the above limitations may not apply to you. This warranty gives you specific
rights, and you may also have other rights which may vary from state to state.
WARRANTY RETURN POLICY
Warning- opening this product for any reason voids the warranty. There are no user serviceable parts in the cases. No
product will be accepted for repair or replacement without an authorization number (RA). RA numbers may only be issued
by MTI or authorized distributors. Include an explanation of the problem, the original dated sales receipt, and your return
address. Send, shipping prepaid, to MTI Industries, Inc. 206C Tequesta, FL 32541 E-mail s[email protected]
www.mtiindustries.com
MARINE TECHNOLOGIES, INC.
SAFE-T-ALERT™ MGD-1 and MGD-1XL
MARINE GASOLINE FUME DETECTOR
USER’S MANUAL
IMPORTANT
PLEASE READ CAREFULLY AND SAVE
This manual contains important information. Purchasers who install
this detector for use by others must leave this manual with the user.
ALL RIGHTS RESERVED REV: MGD1XL 02142019-1
!
WARNING: LIMITATIONS OF FUME DETECTORS
Gasoline Fume detectors will not work without power. Examples causing no detector power are
an open circuit breaker, blown or missing fuse, broken wire or improper wire crimp connection.
CAUTION - This detector will only indicate the presence of gasoline fumes at the sensor. The
sensor cannot monitor a compartment that is separated by a bulkhead. Gasoline fumes may be
present in other areas. MTI recommends that sensors be installed in compartments where gasoline
fumes may accumulate.
Gasoline fume detectors may not be heard. The alarm loudness is designed to meet or exceed
regulatory standards; however, the alarm may not be heard if detectors are installed in remote
locations. The alarm may not be heard by persons who are hard of hearing.
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WARNING: WHY EVERY BOAT NEEDS A FUME DETECTOR
Gasoline vapors can develop in fuel pumps, fuel tanks, fuel lines, carburetors and fuel systems.
The SAFE-T-ALERT™ MGD-1 and MGD-1XL detectors are for Marine Use. They are an early
warning monitor, designed to notify the user when 20% or less of the lower explosive limit of
gasoline fumes are present in the monitored area.
Power Supply: 12 vDC Recommended Wire Gauge: 18 Ga.
Wire Color Code: Red (+) Black (-) Fuse: In-Line 1 amp to the Red lead of the panel
WHERE TO INSTALL THE PANEL AND SENSOR
•Locate the control panel in the helm area where it can easily be seen and heard.
•Locate the sensor block on a forward bulkhead wall about starter height.
WHERE NOT TO INSTALL THE PANEL AND SENSOR
•DO NOT mount the control panel under a cowling, or glass or plastic panel where it my not
be seen or heard.
•DO NOT locate the sensor block above batteries. Hydrogen from the batteries may cause
nuisance alarms.
•DO NOT locate the sensor block behind any obstruction that will prevent air flow to the
sensor.
•DO NOT locate the sensor block on the aft bulkhead. Water in the sensor block could cause
permanent damage to the sensor block.
•DO NOT locate the sensor within 12 inches (304.8 mm) of exhaust lines. High heat may
cause false alarms.

INSTALLATION INSTRUCTIONS
CAUTION: Gasoline is heavier than air. Mount the Sensor Block below the engine starter
height.
1. After referring to the “Where to Install the Panel and Sensor” and Where NOT TO Install the
Panel and Sensor Block” select an area at the helm with at least 3” (76.2 mm) of clearance
for the housing. Drill a 2 1/8” (53.975 mm) mounting hole and install the housing using the
hardware supplied. DO NOT CONNECT POWER UNTIL THE INSTALLATION IS
COMPLETE.
2. Connect one end of the 20-foot (6096 mm) cable assembly to the control panel and run the
cable to the engine compartment location of the sensor block.
3. Mount the sensor block below starter height on the forward bulkhead wall with the cable
down toward the bilge. Do not mount the sensor block where it can get wet or submerged
in water. Do not mount with the cable entering from the top as water can run into the
sensor block and damage the sensor block. Connect the 20-foot (6096 mm) cable.
4. Use a 1 amp in-line fuse and connect the RED power lead to the 12 vDC battery positive (+).
Connect the BLACK lead to the battery ground (-).
OPERATION
The MGD-1 and MGD-1XL units have supervisory circuits to warn of various sensor block
malfunctions and a disconnected or broken cable connector.
1. Press the ON pad on the control panel. The WAIT (YELLOW) light will turn on. In about
two minutes the WAIT (YELLOW) light will turn off and the ON (GREEN) light will turn
on. The detector is now operational and monitoring for gasoline fumes/vapors. During the
two-minute warm-up time you may press the TEST/MUTE pad to check the alarm sounder
and the WARNING (RED) light, as described in the TESTING section below.
2. When the sensor detects gasoline vapor above the alarm threshold, the sounder will beep and
the WARNING (RED) light will blink. The alarm will continue until the air in the monitored
area has cleared.
3. Press the TEST/MUTE pad will mute the alarm sounder for 5 minutes. The WARNING
(RED) light will continue to blink. After about 5 minutes, if the air in the monitored area has
not cleared, the alarm sounder will resume beeping.
NEVER ENTER THE ENGINE COMPARTMENT WITH AN OPEN FLAME OR LIT
SMOKING MATERIALS. OPEN FLAMES AND SMOKING MATERIALS CAN
CAUSE AN EXPLOSION AND OR FIRE.
TESTING
!
WARNING
TEST THIS ALARM’S OPERATION AFTER THE BOAT HAS BEEN IN STORAGE,
BEFORE EACH TRIP, AND AT LEAST ONCE PER WEEK DURING USE.
1. With the unit on, press and hold the TEST/MUTE pad. Verify that the WARNING (RED)
light blinks and the alarm sounder beeps. Release the TEST/MUTE pad. A brief press of the
TEST/MUTE pad will run the test for 3 seconds. If the WARNING (RED) light does not
blink and/or the alarm sounder does not beep, the unit is defective and must be replaced. This
test step verifies a good connection between the control panel and the sensor block.
2. When the ON (GREEN) operation light is lit, the sensor block can be tested with
hydrocarbon vapor.
!
WARNING
USE ONLY A BUTANE LIGHTER TO PERFORM THIS TEST.
NEVER USE GASOLINE SOAKED MATERIAL.
3. SENSOR BLOCK TEST: Direct the butane lighter towards the sensor block and depress the
lever to release butane (only) into the sensor block. The alarm should sound and the
WARNING (RED) light on the control panel should blink. It will take 8 to 10 seconds for the
unit to respond. DO NOT hold the lever on the butane lighter for more than 15 seconds.
4. SUPERVISORY CIRCUIT TEST: Disconnect one end of the 20-foot (6096 mm) connector
cable. The alarm should beep every 30 seconds and the WARNING (RED) and ON
(GREEN) lights on the control panel will blink alternately to indicate a malfunction.
IF THE UNIT DID NOT TEST PROPERLY REFER TO THE
TROUBLE SHOOTING GUIDE
MAINTENANCE
1. Keep the sensor block free of dust and debris.
2. Remove or cover the sensor block whenever the bilge compartment or engine compartment
equipment is being cleaned, painted, power washed etc. Direct contact with chemicals, WD-
40, water, oil, etc. can cause permanent damage to the sensor.