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Topic: Genset Blower Motor Question (Read 556 times) previous topic - next topic

Genset Blower Motor Question

We have a Powertech/Kubota genset on our 1995 U295.  The remote blower motor kicks on and off in a mode that seems to be time dependent rather than temperature dependent, which results in engine overheat shutdown.  The blower isn't even running when the engine shuts down.  The blower effectively cools the radiator when it is running.

Have any of you bypassed - or wired around - a sensor so that the blower runs constantly whenever the genset is operating?

Larry

Re: Genset Blower Motor Question

Reply #1 –
Check the start Capasitor on top of the
electric Motor, disassemble and replace with a new one. Motor should start when
the Genset starts up
1996 U320 Build 4922 original owner

Re: Genset Blower Motor Question

Reply #2 –
Also check the breaker for the blower may have a bad connection
previous 1984 35 ft ORED 250 HP 3208 Cat       
previous 1998 40 ft U295 CAI 325 hp Cummins
previous 2003 40 Ft u320 build #6140 450 Cummins M11.                                                         
1999 Mazda Miata
Ron, Nancy, Tipper the cat, Max The dog
1997 U 270 36 ft build number 5174 8.3 Cummins

Re: Genset Blower Motor Question

Reply #3 –
Ours had a loose connection to the fan breaker inside the control box.
Paul & Kathleen
1995 U320c SE 40'
Build 4681 --Cummins M11 /17511
"That Irish Girl"
Red MINI " 40"

Re: Genset Blower Motor Question

Reply #4 –
Quote from: U295 Owner –

The blower isn't even running when the engine shuts down.

Have any of you bypassed - or wired around - a sensor so that the blower runs constantly whenever the genset is operating?

Larry
The engine shuts down because the blower motor isn't running and it is over heating.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Genset Blower Motor Question

Reply #5 –
None of my coaches had a sensor, when generator was running, blower was running. Water temp was controlled by thermostat.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Genset Blower Motor Question

Reply #6 –
Motor may have a thermal overload switch, that when the windings get too hot it shuts off, check for bad bearings or clogged cooling vents on the motor
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Genset Blower Motor Question

Reply #7 –
My blower runs as long as the genny is running.
The selected media item is not currently available. Dave Head & Megan Westbrook
Titusville, FL - The Great Outdoors
'98 270 buying this month
Toad is a 2018 F150 XLT

Re: Genset Blower Motor Question

Reply #8 –
I had a problem with low coolant, it caused a no blower event. Once coolant leak was repaired, and topped up blower functioned properly ...
2001 U320 40ft
Build #5867
2003 Tracker
VE7DOD

Re: Genset Blower Motor Question

Reply #9 –
Check the little switch on the front of the control box, maybe by pass it. Hit mine to the off position once, it stopped running do to overheating.
Chris and Tammy White  CDA Idaho
Previous owners 1997 U295 36' 3126 Cat 300 HP Build # 4998
Former Foretravel tech & RVIA certified tech
Former owner Custom Satellite home/RV satellites 
Former owner Vans LTD  van conversions
Unemployed, panhandler, drag racer NHRA #6348

Re: Genset Blower Motor Question

Reply #10 –
The capacitor isn't on the motor-it's mounted to the back of the blower housing.  See my post on motor replacement.  If it starts sometimes, I'd concentrate on the fan breaker first.  They've been known to get weaker with time.  Replace in kind or with a slow blow fuse.
Regards,
Brett

'99 42' Foretravel Xtreme
'14 Brown Motorsports Stacker
'05 Chevy SSR
'02 BMW R1150R

Re: Genset Blower Motor Question

Reply #11 –
When mine went bad, after replacing everything else I ended up replacing the blower motor with a new cage. 

Mine also runs 100% of the time the generator is running.
2014 ih45  (4th Foretravel owned)
 1997 36' U295 Sold in 2020, owned for 19 years
  U240 36' Sold to insurance company after melting in garage fire
    33' Foretravel on Dodge Chassis  Sold very long time ago

Re: Genset Blower Motor Question

Reply #12 –
Thanks to all who gave suggestions.  The problem turned out to be that the shop who installed our new blower motor wired it incorrectly.  I talked to James, at FT, and he said that the blower motor should NEVER run intermittently.  He sent me an electronic copy of the wiring diagram for the motor and capacitor.  It effects all models.  If anyone should happen to need a copy of, PM me and I'll send it.  Keep in mind that we don't have email while traveling, but we will be home for a few weeks yet.
 

Re: Genset Blower Motor Question

Reply #13 –
Quote from: U295 Owner –
He sent me an electronic copy of the wiring diagram for the motor and capacitor.  It effects all models.  If anyone should happen to need a copy of, PM me and I'll send it. 

Please consider uploading it to the Media section here on the forum - that way anyone who needs a copy can download it when they need it.

The best album is this one 

http://www.foreforums.com/index.php?action=media;sa=album;in=194

or this one

http://www.foreforums.com/index.php?action=media;sa=album;in=204
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320