Winterization

How To Maintain Our Trailers

Winterization For Your Trailer

If you are using your trailer in below freezing temperatures it is important that the heat and tank heaters are kept running to keep your water lines or waste tank from freezing. 

If you are storing your restroom trailer in below freezing temperatures you will need to winterize the unit using RV antifreeze. Below are steps to winterize your restroom trailer.
 

1.       Winterization of your restroom trailer: If you are storing your restroom trailer in below freezing temperatures, you will need to winterize the unit using RV antifreeze.  There are many ways to properly winterize your trailer.  Any method that removes all water from the trailer’s waterlines, pumps, traps, tanks, and features is acceptable. Below please find 3 common methods:

a.        If your trailer is equipped with a fresh water system

                                                              i.      Drain all water from fresh water holding tank

                                                             ii.      Run each toilet and each sink until water no longer comes out

                                                           iii.      Turn off Water Pump Switch

                                                           iv.      Open all valves to drain water from all water lines (1,2,3,4,6)

                                                             v.      A winterization port has been installed on your pump inlet for convenience. (Valve #5)

1.       Close Valves 1,2,3,4,6

2.       Place Winterization Hose into 1 gallon Jug of RV Antifreeze

3.       Open Valve #5

4.       Turn on Water Pump Switch

5.       Open Valve #3 Until you see antifreeze getting into fresh water tank

6.       Open Valve #4 for 10 seconds to purge all water from spray bar clean out port

7.       Run each toilet and each sink until antifreeze is coming out

8.       Dump ¼ Gallon of RV Antifreeze into each urinal trap

9.       Dump ¼ Gallon of RV Antifreeze into each sink to fill “s” Traps

10.   If your trailer is equipped with Exterior Hand Wash Stations: Make sure to pump antifreeze through sinks, water lines, and drains. Make sure to dump a minimum of ¾ gallon of RV antifreeze down sink to fill entire bilge pump with antifreeze!

a.       A drain valve has also been installed under the trailer to drain the water from the water lines if desired

                                                           vi.      Review trailer features/functions to verify all water has been purged from trailer.

                                                          vii.      Drain Waste holding tank

                                                        viii.      Leave Dump Valve open when not in use to avoid potential freezing in valve.

                                                            ix.      Raise tongue jack high so any water remaining in waste tank doesn’t get into dump valve which could crack if frozen.

b.      If your trailer is not equipped with a fresh water system:

                                                              i.      (2 person job)- Connect RV Antifreeze hand pump to city water fill inlet on exterior or trailer. 

                                                             ii.      Hold down on each toilet flush valve while partner pumps antifreeze into trailer water line. Flush each toilet and run each sink until only antifreeze is coming out.

                                                           iii.      Open Valve #4 “spray bar clean out” if applicable to assure all water gets pushed out of spray bar in waste tank

                                                           iv.      Dump ¼ gallon antifreeze into each urinal trap, and into each sink to fill “s” Traps.

                                                             v.      Raise the front of the trailer higher than the back. This will keep any water that is left over in the Waste Holding Tank or enters the Waste Holding Tank through the vent stack in the rear of the tank and away from the Waste Dump Valve, where it could freeze and rupture if temperatures were to drop below freezing causing costly repairs.

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Lang Specialty Trailers goal is to create innovative restroom trailers that are not only eye appealing, but are durable, easy to install, easy to clean, and functional for the professional restroom trailer operator.

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