Wanderlodge Owners Group  
BuyByeBlueBird.com
Donate

Go Back   Wanderlodge Owners Group > Mechanic's Corner > Electrical

Electrical Discussion of preventative/corrective maintenance and other technical issues regarding your coach's electrical system.

Site Search:
Reply
 
Thread Tools
  #1  
Old 3 Weeks Ago
Bruce Bruce is offline
Senior Member
 
Join Date: Dec 2007
Location: winnipeg
Posts: 971
Default Inverter heat

I finally have my Samlex Inverter installed. The bay is only 30x30x24 deep. The Default bulk charge is 40 amps but I changed it to 75. My batteries were very low. The charger portion has been running for 3.5 hours. I had closed the bay door. I just opened the door and the inverter is quite hot. I should have taken the temp but the unit was uncomfortably hot. Not good. Any suggestions on venting the bay without water entry? I still have my Intellipower 80 amp smart charger and it never got very hot. I could disable the Samlex charger and rely on the other charger. But why buy a nice inverter/charger and not use it?? Should have added: My Bird is in my shop and it is about 84 degrees inside! **** hot here.
__________________
Bruce
1988 FC 35
" La Reina Gitana" SOLD

1988 PT38 La Reina Gitana II
Reply With Quote
  #2  
Old 3 Weeks Ago
schamp schamp is offline
Senior Member
 
Join Date: Nov 2012
Location: Pine Mountain
Posts: 384
Default

On my 1990 coach I was having the same problem. Heat in that area. No vent, etc. I had Coachcraft cut some holes in the back side. Problem then became the fan pulling in lots of dust and even small pebbles on or from my gravel driveway. My fan is set to high all the time. Believe me it really works.
The fix was to put a filter over the holes. Has worked so far.
I would think the next thing would to be move the inverter to another location. They seem to just use cheap little fans to cool the inverters. It doesn't take much to stop one.
__________________
Spencer Champion
Pine Mountain, Georgia
2004 M380 Was OCBIRD (sold)
1990 PT-40 Blue Thunder
Reply With Quote
  #3  
Old 3 Weeks Ago
Shahin Shahin is offline
Senior Member
 
Join Date: Aug 2018
Location: Berkeley
Posts: 368
Default

Quote:
Originally Posted by schamp View Post
On my 1990 coach I was having the same problem. Heat in that area. No vent, etc. I had Coachcraft cut some holes in the back side. Problem then became the fan pulling in lots of dust and even small pebbles on or from my gravel driveway. My fan is set to high all the time. Believe me it really works.
The fix was to put a filter over the holes. Has worked so far.
I would think the next thing would to be move the inverter to another location. They seem to just use cheap little fans to cool the inverters. It doesn't take much to stop one.
On mine the Magnum inverter is above the batteries on the bay next to Racor/engine bay so it is vented somewhat. But I think it magnum is much smaller than the size you mentioned.
__________________
Shahin Khosravi
Berkeley, CA
1991 PT40WB
sskhosravi@gmail.com
www.coddiwomplers.org
650.653.1539
Reply With Quote
  #4  
Old 3 Weeks Ago
badandy badandy is online now
Senior Member
 
Join Date: Dec 2016
Location: delavan
Posts: 2,584
Default

You should try to put like a BBQ probe with a remote LCD readout thingy in there and run it with the door closed. It can run hot, like 150F probably. If you do vent the compartment just remember you need an intake and exhaust. One fan isn't going to do much unless the compartment isn't sealed up very well.
__________________
Reply With Quote
  #5  
Old 3 Weeks Ago
Bruce Bruce is offline
Senior Member
 
Join Date: Dec 2007
Location: winnipeg
Posts: 971
Default

That compartment is sealed very well. I think a computer fan with a filter and maybe clamshells or soffit vents in the side will work. I am going to run the charger portion with the bay door closed and then see what my temp gun says. I could put the battery heat sensor in the bay as a backup protector. The unit will go into fault mode if the transformer or heat sink get over a certain temp.
__________________
Bruce
1988 FC 35
" La Reina Gitana" SOLD

1988 PT38 La Reina Gitana II
Reply With Quote
  #6  
Old 3 Weeks Ago
K Ridley K Ridley is offline
Senior Member
 
Join Date: Mar 2010
Location: Spokane
Posts: 431
Default

Being a PT40 my Xantrex inverter\charger sits in the small bay behind the tag tire. The Xantrex would overheat and shut down when charging on hot days even with the factory open louvers in the compartment. I addressed the water intrusion issue by covering the louvers with bulk air filter foam. I sandwiched it with pieces of expanded metal and I've had no problems with water in the compartment. For the overheating issue I got 2 120 volt muffin fans, 1 pulls air into the compartment and the other pushes hot air out. I wired them through a snap disc that closes at 120 degrees and opens at 95. Since doing this the only time I've had an overheating issue is when the first snap disc failed. Even with the fans blowing through the filter foam the flow is plenty to keep it cool.
__________________
Kevin Ridley
1979 FC35 XV (Sold!)
1986 PT40 Amazing Grace (Full Timing It)
Follow our travels at:
ampersandgemandjewelry
Reply With Quote
  #7  
Old 3 Weeks Ago
Bruce Bruce is offline
Senior Member
 
Join Date: Dec 2007
Location: winnipeg
Posts: 971
Default

Shahin> Those measurements are the bay not the inverter. But the Samlex is much larger than the Magnum in our Dynasty. About triple the size. Magnum are great inverters. Easy to setup. The Dynasty has a residential fridge and I leave the inverter in the on position. It goes to sleep when under shore power and seamlessly starts up when you disconnect shore power.
__________________
Bruce
1988 FC 35
" La Reina Gitana" SOLD

1988 PT38 La Reina Gitana II
Reply With Quote
  #8  
Old 3 Weeks Ago
Orvie6574 Orvie6574 is offline
Senior Member
 
Join Date: Sep 2015
Location: Edenton
Posts: 124
Default

Or put it back on 40 amps, more amps = more heat
__________________
Orville Mason
Edenton, NC
1978 31 FC
Reply With Quote
  #9  
Old 3 Weeks Ago
Steelwheels's Avatar
Steelwheels Steelwheels is offline
Senior Member
 
Join Date: Aug 2011
Location: Albuquerque & Downers Grove
Posts: 1,303
Default

There’s lots of computer fan dust filters just google it.

https://www.ebay.com/b/Computer-Fan-...1495/bn_661882
__________________
Kiki B
Downers Grove, IL
87fc35
Reply With Quote
  #10  
Old 3 Weeks Ago
MRPutz's Avatar
MRPutz MRPutz is online now
Burnin Up in Az. :-)
 
Join Date: Apr 2008
Location: Mesa
Posts: 4,112
Default

Also check with the manual, most times the orientation of the device also affects its cooling. But yea, ventilation is a necessity.
__________________
Michael & Tami Putz
78FC35SB & 83FC35SB Wanderlodge - "Putz'n Around"
'90 GL1500 Goldwing | '67 VW Rail | '82 CJ5 Jeep
eMail=Mike.Putz@cox.net | Web=http://mikeputz.com/
Solar = https://www.solarpenny.com/SearchResults.asp?Cat=257

FMCA #236459, Good Sam #17270530, Vintage Birds #1509
Reply With Quote
Reply

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat exchanger captainbb HVAC, Air Conditioners, Aqua Hot, Primus, Webasto, Chassis Heaters, Furnaces and Water Heaters 4 11-10-2018 12:28 PM
Turning on the LPG heat Albert2 HVAC, Air Conditioners, Aqua Hot, Primus, Webasto, Chassis Heaters, Furnaces and Water Heaters 21 09-16-2018 03:21 PM
Heat Tape & Tank Heat Mats Warning - FIRE HAZARD jwasnewski Electrical 84 09-13-2014 02:51 AM
heat wtwtw SP (Single Axle Pusher Unique Issues) 4 11-09-2012 09:45 PM
No bathroom heat lonestar382 HVAC, Air Conditioners, Aqua Hot, Primus, Webasto, Chassis Heaters, Furnaces and Water Heaters 17 11-20-2009 04:10 PM

Web Search:

All times are GMT -4. The time now is 10:20 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.