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Open Roads Forum  >  Class A Motorhomes

 > Froze black/grey tanks....

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dufferdj

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Posted: 10/28/20 07:45pm Link  |  Quote  |  Print  |  Notify Moderator

Hopefully someone here can help me out. We were evacuated last Wednesday as a result of the East Troublesome Fire. We were given about 15 minutes fo get out of our home as the roar of the fire could be heard coming northeast toward us and the the town of Grand Lake and the west side of Rocky Man. Nat'l Park. The RV was loaded and ready to go...almost. We headed south to Granby where we spent the first night on a side street. The next 4 nights were spent in a local rodeo parking lot. Those 5 nights were w/o electricity. Temps dropped to -8 on the coldest night and stayed below freezing most of the time. Now comes my problem. I had the foresight to pour 1/2 gal. of RV anti-freeze down into each the 2 tanks, but it looks like that was not enough. I have not tried to drain the tanks, yet. The temps are finally getting above freezing during the afternoons, but I need to do something to thaw out those tanks. If I pour more RV antifreeze into the tanks, will that cause the "ice" to melt? Someone suggested to pour "ice melt" into the tanks but will that cause a problems with the sensors or the valves? Thanks in advance and so far it looks like our home was spared any damage, but we have not been given the okay to re-enter --- hopefully tomorrow.

jdc1

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Posted: 10/28/20 07:59pm Link  |  Quote  |  Print  |  Notify Moderator

Anything you pour down there will freeze. If you can find any stick-on electric heat pads, that is your best bet.

Old-Biscuit

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Posted: 10/28/20 08:24pm Link  |  Quote  |  Print  |  Notify Moderator

I would hookup and try draining before resorting to any other methods


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Lantley

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Posted: 10/28/20 09:05pm Link  |  Quote  |  Print  |  Notify Moderator

if the ambient temperature is above freezing pour boiling hot water into the tanks. Start with the black tank simply because it is a clearer shot into the tanks.


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time2roll

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Posted: 10/28/20 10:18pm Link  |  Quote  |  Print  |  Notify Moderator

Keep driving south.

Find an RV park and use the facilities there.


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pianotuna

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Posted: 10/28/20 11:21pm Link  |  Quote  |  Print  |  Notify Moderator

I would try a radiant heater--one of the type that glows cherry red.

I've used one to thaw a frozen compartment door.

You will need to be patient. It takes a LOT of energy for water to change from frozen to liquid.


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cavie

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Posted: 10/29/20 04:53am Link  |  Quote  |  Print  |  Notify Moderator

If you have Antifreeze in the tanks you will be fine. Antifreeze jells but does not freeze hard and expand. I think that if you find some fresh running water it will be warm enough to let you dump the tanks.


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valhalla360

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Posted: 10/29/20 07:15am Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

Keep driving south.

Find an RV park and use the facilities there.


You can mess around dumping stuff down the tanks or taking a blow dryer to the pipes but moving south will be the most effective and if you are going to be stuck in the RV for a while before heading home will allow you to use the onboard facilities.


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Matt_Colie

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Posted: 10/29/20 07:52am Link  |  Quote  |  Print  |  Notify Moderator

Everybody seems to have discounted the fact that a good part of what goes into the black tank is the same thing used to de-ice runways.

Ego the black tank is always less of an issue, but the gray sure can be. You can put almost any ice-mellter you want in there unless it is going into a septic system, then you have to be careful.

Matt


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shum02

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Posted: 10/29/20 07:59am Link  |  Quote  |  Print  |  Notify Moderator

How do you know they are frozen if you haven't drained them?

Is the belly of the rig covered or open?

If open a small electric forced air heater will do the trick blowing on the tank, if it is closed and insulated with a "heated" underbelly turn on the furnace and crank it up. It'll take a while but it will eventually warm it up.

I've had worse, don't panic.


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