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OT’ers with Generac’s

Posted on 5/14/24 at 9:24 pm
Posted by Yaboylsu63
Member since Mar 2014
1532 posts
Posted on 5/14/24 at 9:24 pm
Bought a house with a 22kW generac recently.
It’s come in handy as our power is still out from the storm.

It’s been running for roughly 24 hours straight now. Putting as little load on it as we can. Just AC and fridge.

Should I shut it off for a few hours to let it cool down or is it okay to let it keep running?

I did change the oil, spark plugs, and filter on it just last week. So it went into this outage in good shape.
Posted by ScopeCreep
In the thick
Member since Jul 2016
643 posts
Posted on 5/14/24 at 9:25 pm to
No. Let it run. You don’t need to do anything until you get to 100 hours of run time. Then you should shut it down, change the oil, and fire it back up.
Posted by Mr Roboto
Rural Mississippi
Member since Jan 2023
1302 posts
Posted on 5/14/24 at 9:26 pm to
Generac’s are shitty. We’ve got a Taylor
Posted by ruzil
Baton Rouge
Member since Feb 2012
16957 posts
Posted on 5/14/24 at 9:26 pm to
Air cooled or water cooled.

If air cooled I would google the specs for how ofter for oil changes and continuous operation perameters.
Posted by Giantkiller
the internet.
Member since Sep 2007
20470 posts
Posted on 5/14/24 at 9:26 pm to
Whole-home Generators are miracle inventions. Having said that…
quote:

It’s been running for roughly 24 hours straight now.

Enjoy that extra $400 on your entergy bill.

Eta: I was just kiddin around. It's a minimal cost and well worth it.
This post was edited on 5/15/24 at 5:58 am
Posted by SlackMaster
Baton Rouge
Member since Jan 2009
2661 posts
Posted on 5/14/24 at 9:27 pm to
Hard to say what's best. I've read that you should shut it down every 24 hours and change the oil -- especially with a Generac. However, others say you should be okay if you use a quality synthetic oil. I guess it depends on how safe you wish to play it.
Posted by rltiger
Metairie
Member since Oct 2004
874 posts
Posted on 5/14/24 at 9:28 pm to
Let it run.

Mine ran for 8 days straight one hurricane. It has a low oil shut off so you don’t need to worry about burning it up.



Posted by ScopeCreep
In the thick
Member since Jul 2016
643 posts
Posted on 5/14/24 at 9:29 pm to
Mine was about twice the cost of my regular electric bill the last time I had to use it (Ida). Worked out to about $20/day.
Posted by TDsngumbo
Alpha Silverfox
Member since Oct 2011
41748 posts
Posted on 5/14/24 at 9:29 pm to
quote:

Generac’s are shitty

I’ve always heard the Generac whole house generators are not what they’re all cracked up to be but I believe the problem is people not maintaining them properly.

I’ve got a portable Generac 10k with an interlock kit on my panel. Plug and go and for the two weeks every ten years I need it, it works just fine. I can run everything in the house except the central AC, just not all at once.
Posted by ruzil
Baton Rouge
Member since Feb 2012
16957 posts
Posted on 5/14/24 at 9:31 pm to
quote:

However, others say you should be okay if you use a quality synthetic oil. I guess it depends on how safe you wish to play it.


You can run water cooled generators a lot longer since they run at lower rpm compared to air cooled.

Air cooled generators are really not designed to run continuously and need frequent oil changes and frequent rests.

Posted by SlamNGo
Denham Springs
Member since Sep 2022
29 posts
Posted on 5/14/24 at 9:32 pm to
I have same generator. I run it 70-100 hours straight. Seems to work for me. I change filters/oil. Let her eat again.
Posted by Ben Hur
Baton Rouge, LA
Member since Feb 2013
895 posts
Posted on 5/14/24 at 9:32 pm to
Shut it down for 1 hour every 24 Hours running. Check the oil before starting back up.

Oil change every 200 hours (or every 2 years if you do not hit that).

Got through 11 days after Ida with that routine.
This post was edited on 5/14/24 at 9:39 pm
Posted by greenbean
USAF Retired
Member since Feb 2019
4679 posts
Posted on 5/14/24 at 9:35 pm to
With the frequent oil changes, I'm assuming the plug is a valve with a hose attached to it to facilitate easier/quicker/less messy changes?
Posted by GOMD78
Ox Bow Lake
Member since Oct 2017
387 posts
Posted on 5/14/24 at 9:36 pm to
If it’s been properly maintained you can let it run 36-48hrs before needing to shut it down. Check the oil level and change if needed. Like someone else said it has a low oil shutoff built in so you should be good.
Posted by scrooster
Resident Ethicist
Member since Jul 2012
37764 posts
Posted on 5/14/24 at 9:47 pm to
Yours was probably manufactured here in Trenton, SC .... not far from me.

I have a couple that I've had for over a decade that cycle on and off once a month. Neither of them have over 200 hrs total on them and I haven't had to use them for a prolonged period since I installed them.

I've got two Predator 9500s in series that I've used more than the Generacs. I've also got a large solar/battery back up system.

Gas vs Propane vs Paul Diesel (inside joke) vs Solar.

I know two guys who work(ed) at the Trenton Plant. Both have told me, multiple times, that it's all about the maintenance. Both insist that changing the oil every 80 hrs is the rule and both insist on using magnetic drain plugs.

That's all I know to contribute to this thread.

I'm looking for a big Chinese Diesel.
Posted by SG_Geaux
Beautiful St George
Member since Aug 2004
78078 posts
Posted on 5/14/24 at 9:48 pm to
Ran for about 10 days after Ida.

I shut it down late afternoon each day for about an hour and checked/topped off oil.

Changed the oil once during that time
Posted by Havoc
Member since Nov 2015
28640 posts
Posted on 5/14/24 at 9:50 pm to
In similar situations, i often shut down for a few hours, usually mid morning, but for no real reason.
Posted by scrooster
Resident Ethicist
Member since Jul 2012
37764 posts
Posted on 5/14/24 at 10:01 pm to
quote:

In similar situations, i often shut down for a few hours, usually mid morning, but for no real reason.

Yeah .... depends on time of the year.

Summertime it would run continously through the day, through the night and then shut down once the house is cooled early to mid morning. Don't open the fridges.

Winter time no need to run it more than a couple of hours a day in the South. Enough to keep the freezers frozen and for showers and well water refills.

There's really no need to run any gennie constantly this time of year.

Also, highly recommend installing Easy Starts on HVACs.
Posted by Rize
Spring Texas
Member since Sep 2011
15843 posts
Posted on 5/14/24 at 10:03 pm to
I agree with what everyone has said about it can run but I do shut it down and check the oil.

It’s also good to keep plenty of backup oil and an oil change kit on hand. I have 24kw and I ran all kinds of shite on it during Ida. My dumb arse left my pool chiller on
Posted by SG_Geaux
Beautiful St George
Member since Aug 2004
78078 posts
Posted on 5/14/24 at 11:13 pm to
quote:

I have 24kw and I ran all kinds of shite on it during Ida. My dumb arse left my pool chiller on


22kw here. Ran everything during Ida and didn't think twice.

Only thing I couldn't run was the home theater because my surge protector would cut the power on and off due to the generator running.

So I setup my other TV.
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