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RiverRatt
#1 Posted : Monday, August 10, 2009 1:52:10 AM(UTC)
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I am looking at adding fume detectors?

Are they worth the $$$?

I use my nose before startup, but I can't stick my nose in there all the time when cruising.

What about the option of fire & fume detector (Set off by heat 190 deg) ?

"The is no dumb-ass vaccine" - Jimmy Buffet
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fastjeff
#2 Posted : Monday, August 10, 2009 3:49:30 AM(UTC)
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..."Are they worth the $$$? "

YES!!! Here's the evidence to prove it, and a warning to all:

The detector heads don't last more than a few years in the harsh environment of the bilge. Mine wasn't, so I bought a new head (80 bucks). We left the marine and went 500 yards when the silly thing went off. "Nuisance trip," I decided and idled down to pull the hatch and take a look. Guess what? The bilge was reeked of gas! My month old fuel pump had a poorly welded fitting crack, spraying gas every freakin' where!

Remember: this was 500 yards from the slip, and the first run after replacing the detector head! From then on, I won't leave the slip without one.

So, you may be thinking, does Olde Jeff check his fume detector now and then, since the heads need replacement every few years. Doh! I finally checked it last month and the sucker was deader than my Daddy, but it's on my Spring Commissioning List from now on.

Jeff

"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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JimH963
#4 Posted : Monday, August 10, 2009 9:54:13 AM(UTC)
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Jeff,

Looking to upgrade mine (had a similar experience). What brand did you go with?
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fastjeff
#5 Posted : Monday, August 10, 2009 10:31:09 AM(UTC)
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Fireboy/ Xintech. If you buy one, be sure it's the new design with the connector near the detector head. That way you won't have to reroute the entire cable to change heads.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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SORRYDOG2
#6 Posted : Monday, August 10, 2009 2:39:37 PM(UTC)
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We have it happen at least 3-4 times ayear here in Fl. We have so many boats. Last week end downtown after a big party here a yachtbroker I know had been having trouble with his Carbon Monoxide Detecter, even called a boat captain buddy over to look at it. They both decided the head was defective and unplugged it, next morning found broker dead on boat, from fumes!!! I know that both fume and cm detecters are a pain, but when they go off PAY ATTENTION!!! I just disconnected one recentley myself for being a pain, had to pull it of the wall and cut the friggin wiring to get it to quite sqealling. On the cm Detectors be espeially careful when they go off, get plenty of air in the cabin. ONE BREATH OF CARBON M. WILL CAUSE YOU TO PASS OUT!!!!! I hold my breath when I have to go in and this is after I ventilate!! Sure wish we had spell check on the site!! You get the message!!! Sorrydog
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fastjeff
#7 Posted : Monday, August 10, 2009 10:28:00 PM(UTC)
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We have a CO detector that's located above the galley near the light (and using its 12 volt power source). I decided that was the best place for it since air flow past it dilutes the CO concentration and you don't get an alarm.

Late last year while running slow it went off. We had the windshield closed since it was a cold day and were running from below--no FB. The rear doors (32 Sedan) were open, and "station wagon effect" had sucked in exhaust fumes (which are their worse when the motor are cold).

Needless to say I opened the windshield wide open!

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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jhemp3
#8 Posted : Wednesday, August 12, 2009 11:55:04 AM(UTC)
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My CO detector goes off every time I cruise slowly with the salon doors open and windows closed. My fume detector is almost useless as it goes off almost constantly. I'll probably blow up tomorrow but for 10 years, I've had to trust my nose and bilge blowers.
Jim
Jim Hemphill
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'87 32' FBS, USCG Certification #1057921
Berthed MM 207 Tennessee River, Picwick State Park Marina
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fishnatic
#9 Posted : Wednesday, June 09, 2010 4:26:15 PM(UTC)
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also had fuel pump inlet connection crack,gas leaking caught it during one of my routine inspects
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DiverDennis
#3 Posted : Wednesday, June 09, 2010 6:06:52 PM(UTC)
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Fastjeff wrote:
...it's on my Spring Commissioning List from now on.
Ditto. A small dab of gas on a paper towell does the trick.
Surface Interval
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Aquaholic
#10 Posted : Wednesday, June 09, 2010 10:16:10 PM(UTC)
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I just bought a new Xintex MB-2 from Overtons for about $95.00. I found it in the sale section (I think that's where it was) anyway they had about 10 left about a week ago. It uses the current plug in sensor. Here is the link: $74.29 it's the M2-A for $74.29

http://www.overtons.com/...etector&merchID=4005
1979 Double cabin with 440's
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yooper
#11 Posted : Thursday, June 10, 2010 3:28:23 AM(UTC)
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Mine went off and I couldn't find any gas leak. I thought my unit was defective until I found a six inch slit in my exhaust hose. Don't leave the dock without one.
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fastjeff
#12 Posted : Saturday, June 12, 2010 5:39:11 AM(UTC)
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There you go! A few years ago, when I tanked up for winter storage (the only time I top 'em off) the fume detector went off. A bit of investigation and I found that the fuel tank level gage gasket bolts were slightly loose and leaking.

I won't leave the slip without one!

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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jimski2
#13 Posted : Saturday, June 12, 2010 10:48:46 PM(UTC)
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One cup of gasoline equals one stick of dynamite in explosive power. I have seen two boats explode at a fuel dock. Blower fans and explosimeter systems are cheap.
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vitalidle
#14 Posted : Tuesday, June 15, 2010 8:29:46 AM(UTC)
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After I read this thread I decided to have a look at my fume detector. I have a xintex mirage ll. It wasn't working so I decided to do some investigating and found the ground disconnected. Well I think I know why as the alarm went off. I think the sensor may be bad. I did find some paperwork for the detector and it tells you how to troubleshoot the sensor itself with a volt meter. Anyway my question is does anyone have this model and can you still get a new sensor for it as well?
Sean Cornish
83 28ft Sportsman twin 318's
Homeport: Munising, MI.
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fastjeff
#15 Posted : Tuesday, June 15, 2010 10:28:30 AM(UTC)
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Not sure on that model but, in general, the sensors only last a few years in that harsh environment.

Jeff
"...reality is not nearly as lovely as the world of Liberal Land. No wonder so many people want to go there." - Tom Sowell
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tundrarules
#16 Posted : Saturday, July 24, 2010 4:14:25 AM(UTC)
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After my carb fuel vapor problem (carter afb's flooding) I can tell you that my vapor system is not working. I have the Sentry 415 system and from what I'm reading on the net, I can't buy sensors anymore....so here we go again...getting out the wallet.. again d'oh! ...($136.00) I will be buying the fireboy system with quick disconnect sensors.

Reading a previous thread.. you guys were discussing fueling procedures..Do you leave your blowers on during fueling? I currently leave mine running during refueling..This only make sense to me..why would you wait to start your blowers after refueling? First, you are venting the fumes so they don't build up..Second, starting a blower motor while the fumes are at the highest level is crazy. You cause a larger spark when starting a dc motor!!! Besides, blower motors are spark proof correct? Think

1985 Marinette 29 Sedan bridge
Twin 318s, 660 hours
New Edelbrock 1409 carbs (working like a charm)
Original Electronic Ignition, Blaster 2 coils, 90 deg plug wire universal kit cut to fit
Raw water system
Freshwater always
Located Pickwick Lake, TN,MS,AL

RETRO BOATS ARE COOL

If the guys on this forum take their time to help you, have the courtesy to update your thread with the resolution.
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dougrose
#17 Posted : Saturday, July 24, 2010 4:21:36 AM(UTC)
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I removed a Danforth vapalarm IG2 head (meter) from my boat. It has a needle showing SAFE - WARNING - DANGER and a colorful display. Serial number is K12053 and I think the manufacture date is '77. It looks like it was expensive.

If anyone needs it for a spare or knows how to put a sensor on it, let me know: it's yours. I don't need it since I'm Diesel Doug, but I hate to just throw it out....



1975 32' Flybridge Sedan, twin Perkins 6-354 diesels, 1:1.53 velvetdrives, 16 X 19 props. Merritt Island, Florida
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GB49
#18 Posted : Saturday, July 24, 2010 7:24:34 AM(UTC)
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I always figured it best to leave the blowers off while fueling. The blowers "take out" but must also "put in" at the same time. The inputs on the Marinette are generally the scoops behind the cabin windows. The exception is on the Marquis models.
I'd be afraid of sucking any rogue fuel fumes into the engine room.
I don't run blower anywhere near the gas dock. I fill up, pay the bill, take a sniff and go.

The Scentry sniffer sensor is unavailable but I have managed to rebuild both head unit and sensor. The head unit on the bridge experiences failed power from corroded/dirty molex plugs plus ruptured capacitors on circuit board. Ruptured caps is most likely do to age and or over voltage.
The sensor is not replaceable from any boat store but the actual sniffing component inside the sensor is made by Figaro Engineering. The actual part number is still available from the company if your inclined to remove and solder the new sniffer in place.
http://www.figarosensor.com/

-Karl
1986, 32' Sedan, twin 360ci, 275hp Chrysler's w/ K&N flame arrestors
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tundrarules
#19 Posted : Saturday, July 24, 2010 8:13:29 AM(UTC)
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Wow! Good research...That info is worth gold. Just wish I hadn't pushed the buy it now button a few hours ago on a new system d'oh! . Hopefully this helps someone else out on the forum.

Thanks
1985 Marinette 29 Sedan bridge
Twin 318s, 660 hours
New Edelbrock 1409 carbs (working like a charm)
Original Electronic Ignition, Blaster 2 coils, 90 deg plug wire universal kit cut to fit
Raw water system
Freshwater always
Located Pickwick Lake, TN,MS,AL

RETRO BOATS ARE COOL

If the guys on this forum take their time to help you, have the courtesy to update your thread with the resolution.
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GB49
#20 Posted : Saturday, July 24, 2010 8:53:18 AM(UTC)
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In the long run, a new unit is probably the best / safest choice. New technology, new parts & warranty.

-K
1986, 32' Sedan, twin 360ci, 275hp Chrysler's w/ K&N flame arrestors
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