Reply
 
Thread Tools Display Modes
Old 02-08-2013, 01:17 PM   #1
Junior Member
 
Join Date: Feb 2013
Posts: 12
Tips On Removing A/C Roof Cover

My Rockwood trailer has a Dometic roof A/C unit, non-ducted. The unit is vibrating badly when running -- worse on med and high. I believe dirt daubers may have built a nest on the blower wheel, causing the fan wheel to be out of balance. Does anyone have any tips or things to watch out for when removing the A/C shroud so that I can access and clean the wheel ? Is it fairly easy to get to the screws and remove ? I plan to put plywood on the roof to get to the unit -- don't want to risk damaging the roof from walking on it.

Any other things that could be causing the bad vibration ? Are there any other holddown screws or bolts that should be tightened while I'm up there (or inside for that matter) ?

I do remember turning the A/C on in the past, and pieces of dirt and bugs have blown out. That's why I think the dirt daubers are the culprit. I also had to dig two big nests out of the hot water heat flue, so I know they are around the storage location.
__________________

__________________
mecsim is offline   Reply With Quote
Old 02-08-2013, 01:32 PM   #2
Senior Member
 
Join Date: Jul 2010
Location: Waynesville
Posts: 12,019
Cover pan hd bolts come out and then the cover lifts off,easy part. Clean fan blades and cover inside &out. Go to Dom.Site above and it tells you how to check & tighten the unit,WATCH to NOT overtighten the GASKET! Youroo!!
__________________

__________________
youroo is offline   Reply With Quote
Old 02-08-2013, 01:59 PM   #3
Senior Member
 
rattleNsmoke's Avatar
 
Join Date: Oct 2012
Location: Western Connecticut
Posts: 1,571
There should be two Phillips pan head screws on the rear sides and two up front sorta underneath. Really easy to get to. Bring up a pail of water or garden hose and fill the drain pan to make sure all drains are free of debris\leaves\bugs etc.
Check your fan blades really well. Wiggle the impeller housing to see if it's unusually loose (just a thought), like you mentioned if there's anything stuck to them and retighten the unit with the long pass-thru bolts as per Dometics instructions. There's not much else that can go wrong up there. Let us know how you make out.
__________________
2010 Cedar Creek 5th Wheel 34SATS "The Beast"
2006 Ford F350 Lariat 6.0L Diesel
2003 Harley Heritage Softail "Hogzilla"
1986 Marriage to "Wifey" (patience of a saint)
rattleNsmoke is offline   Reply With Quote
Old 02-13-2013, 12:40 PM   #4
Junior Member
 
Join Date: Feb 2013
Posts: 12
Does anyone know if you can get to both fans from the roof ? I looked at the exploded diagram and see that the condenser fan with the large blades should be exposed and easy to get to. It wasn't so obvious for the evaporator fan (the one that blows the air into the trailer). Do you have to remove a metal cover or housing to gain access to the blower wheel ? Or will the blower wheel be visible by just removing the large plastic housing ?
__________________
mecsim is offline   Reply With Quote
Old 02-13-2013, 11:22 PM   #5
Senior Member
 
VinceU's Avatar
 
Join Date: Dec 2011
Posts: 3,502
Quote:
Originally Posted by mecsim
Does anyone know if you can get to both fans from the roof ? I looked at the exploded diagram and see that the condenser fan with the large blades should be exposed and easy to get to. It wasn't so obvious for the evaporator fan (the one that blows the air into the trailer). Do you have to remove a metal cover or housing to gain access to the blower wheel ? Or will the blower wheel be visible by just removing the large plastic housing ?
The open impellor under the roof cover is the condenser fan. The cage evap fan is inside and should not need cleaning if filter is in place.
__________________
VinceU is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:22 AM.