Bertram33 User Forum

I know I have the alarm on my boat. It goes off once per year when I first start the engines in the travel lift pit. Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA [img]http://www.bertram33.com/photogallery/p ... sabeth.jpg[/img]

I've got stock raw water flow sensors/alarms too. One of mine sticks so I have to goose the throttle to get the alarm to shut up when I start up, and occasionally I have to jump in the bilge and tap on it with a screwdriver to free it up. A minor annoyance when they stick, but they will let you know when you run your raw water intake over a plastic bag, which they have warned me about twice now. Also, if I ever had to run with raw-water crash pumps open, they would tell me when I emptied the bilge. I'm glad to have them. Sean Burlingham "Island Time" 1987 Bertram 33 SF Melbourne, FL SBurlingham@cfl.rr.com

What is the recommended replacement cycle (engine hours/years) for these coolers, given a typical operating environment (e.g., mid Atlantic region)? Thanks.

quote:Originally posted by dougl33 I know I have the alarm on my boat. It goes off once per year when I first start the engines in the travel lift pit. Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA [img]http://www.bertram33.com/photogallery/p ... sabeth.jpg[/img] Doug, at what point do they go off?

David, Right when I start the engines for about 5-10 seconds. Don, I have never heard of replacement years/hours for the coolers like there is for elbows/risers (i.e. 5 years for fwc elbows, 3 years for rwc elbows, etc...). I just keep an eye on mine and when they look a little green on the ends I replace them. Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA [img]http://www.bertram33.com/photogallery/p ... sabeth.jpg[/img]

Doug, I meant when do they stop sounding the alarm?

Dave, When I first start the boat, they start ringing right away for about 5-10 seconds and then they shut down. They never ring again until I'm winterizing the boat with a hose in the yard in the fall. Regards, Doug L. 1986 33 Bertram FBC Queen Elizabeth Marblehead, MA [img]http://www.bertram33.com/photogallery/p ... sabeth.jpg[/img]

OK, thanks.

These are the ones I have (200 Series). I highly recommend them. Nice safety device and easier than changing an impeller to install. http://www.aqualarm.net/store/detectors.asp They sell some other cool safety and monitoring gadgets that I will install in the future, when major projects are complete Sean Burlingham "Island Time" 1987 Bertram 33 SF Melbourne, FL SBurlingham@cfl.rr.com

thanks sean

i just emailed crusader and they said they dont put them on the 8.1 engines only the 6.0

Doug, Thanks for the helpful tip. I'll check both coolers for any signs of corrosion. I never knew there was a separate cooler for the transmission. My previous boat was a B28 with 1400 hrs on 350 blocks but I was fortunate in that I never had any issues with those coolers. My current 454s are low hour engines (thanks to the previous owner). Regards, Don

I had the same thing happen to a Trans cooler that developed a pinhole on my 36' Delta about 7 years ago. It melted and twisted the shaft off the twin disc will underway after sucking all the Trans fluid out of it. [xx(] 1979 Bertram 33' FBC ALEXANDRA Port Richey, Florida HAVE YOU SIGNED UP FOR BERTRAM PRIDE '06 yet? DO IT NOW... SPACE IS LIMITED!

quote:Originally posted by franklyprice David, I don't think there is a reset switch. The sender for the water flow alarm is on the right side of the engine, just under the heat exchanger, in line with the water hose. It has two black wires attached to it. I suppose it's possible that it has an air bubble in the hose at the sender and will work its way out as the flow is increased. I still would guess an air bubble is your culprit at this point. Frank Price 1987 SF "Jeanne Claire" Rowley Ma [img]http://www.bertram33.com/photogallery/p ... Claire.jpg[/img] Recently my STBD engine overheated at the dock. I started them up & went back to the car to get something. Ended up speaking with a dock mate for about 15 minutes. Walking back I hear the bell ringing. There's steam coming out the mail slot, the coolant overflow hose has blown off & is steaming away. Up on the Bridge the temp gauge is pinned. Shut her down. After cool down I replaced the bad raw water impeller, top off coolant & think I'm good to go. Start her up everything looks good.. good flow out the exhaust, good temperature BUT the damn bell wont go off. Thinking I've got air in the cooling system, I try several things to purge the air to no avail. I know everything is good, so finally I unbolt the heat sensor from the forward end of the starboard head of the starboard engine. It is significantly hotter than the head that is was sensing. ( I could hold my hand on the head yet I could not hold the sensor). This is the sensor for the engine overheat, not the water flow sensor that Frank mentioned. It is an aluminum disk with 2 wires attached to each side. I believe that once it was overheated & tripped that it will remain in that state until it is de-energised. I believe that it grounds to the engine via contact with the head (+ the 2 attaching bolts) & once tripped, will continue to signal an overheat condition until the circuit is broken which then resets it. The bell went off as soon as I removed the two attaching bolts and moved it away from the head. Within a minute I reattached it and the bell remained off.

Interesting Gerard - good find and I hope that it stays that way ! The bearings in both of my Raw Water pumps went this year. 17 Year Old pumps, guess I shouldn't complain.... Rick Ticket 85 SF Merc 454 MPI's Falmouth, MA