Generator shutting down.

[Carsons_11]

New Cutwater 28. NextGen 3.5 generator shutting down. 95 degrees F. Ambient air temperature. Changed impeller, oil, fuel filters. Anyone else in warmer climates having any issues?
Thanks,
Bob

 

[trailertrawlerkismet]

I had a similar problem on our R29S with our NexGen. I called NexGen and they advised changing the breaker fuse from 30 amp to 40 amp. At the time they provided the part to me, our boat was less then a year old. The fuse I’m referring to is attached to the right front side of the generator. Take the front housing shield off and you’ll see the red 30 amp breaker. This worked for me for 2 years now.

Jim F

 

[BB marine]

There was a discussion about this on Cutwater Owners Facebook. One of the C28 owners installed an exhaust blower to pull air through the Generator sound box. He registered 140 F air temperature being exhausted. The engine compartment does not have a ventilation system installed. It only gets air from around the cockpit liner. It has no way of exhausting the warm air out when there is equipment running engine or Generator. Some generator installs do have a exhaust blower installed but minimally sized. This system works ok in cooler environments but is not designed for warmer climates. I give Fluid Motion a D rating with proper engine compartment ventilation. Adding fresh air to the compartment and a large enough exhaust fan would resolve the issue. I installed a engine compartment ventilation system to lower main engine air intake temperature. With the system blowers running I am able to keep the compartment air in the warmest section at the the ABYC maximum allowable 120F. This summer has been warmer, I did register 132F this summer with two exhaust blowers exhausting while running at Higher cruise speed. The exhaust temperature causing an increase in Turbo temperature and the heat from that radiating in the compartment. Without this system I was 40F+ above the recommended Maximum.

 

[Jfrano]

I had a similar problem on our R29S with our NexGen. I called NexGen and they advised changing the breaker fuse from 30 amp to 40 amp. At the time they provided the part to me, our boat was less then a year old. The fuse I’m referring to is attached to the right front side of the generator. Take the front housing shield off and you’ll see the red 30 amp breaker. This worked for me for 2 years now.

Jim F

Was it blowing the 30 amp breaker?

 

[Matty]

My understanding is the generator is made up of a motor and a electrical generating piece. I may be wrong but original post seems to be indicating an issue with the generator motor as opposed to the electrical generator piece of the equipment. I am currently having an issue with the motor of the generator not able to produce enough rpms to kick on the generator. At first it would run properly a few minutes, cycle down, then recover. Now it just runs rough and slow. Not enough for generator to kick on. I think i have a fuel starvation issue. Will explore this week.
The 30 vs 40 amp fuse appears to deal with the generator side of the equipment.

 

[trailertrawlerkismet]

The 30 amp breaker only kept tripping, forcing the genset to stop running. I’d reset it and it would repeat. We were in Florida at the time. Once 40 amp was installed the problem went away.

Jim F