7-5
SECTION 7 -
PLUMBING
DISINFECTING YOUR FRESH
WATER SYSTEM
(As required by NFPA
®
1192 Standard on
Recreational Vehicles)
To ensure complete disinfection of the potable
water system, it is recommended that the
following procedure be followed on a new
system, one that has not been used for a period of
time, or one that could have become
contaminated.
This procedure is also recommended before
long periods of storage, such as over winter.
Disinfecting with Gravity Fill
–If Equipped
1. Prepare a chlorine solution using 1 gallon of
water and 1/4 cup of household chlorine
bleach (sodium hypochlorite solution). With
tank empty, pour chlorine solution into the
tank through the gravity fill port.
Use 1 gallon solution for each 15 gallons of
tank capacity. This procedure will result in a
residual chlorine concentration of 50 ppm in
the water system.
NOTE: If a 100 ppm concentration is desired,
use 1/2 cup of household bleach with 1
gallon of water to prepare the chlorine
solution. One gallon of this solution
should be used for each 15 gallons of
tank capacity.
2. Complete filling of tank with fresh water.
3. Open each faucet in the motorhome and run
the water until a distinct odor of chlorine can
be detected in the water discharged. Do not
forget the hot water faucets.
4. Let the system stand at least 4 hours when
disinfecting with 50 ppm residual chlorine.
(If
a shorter time period is desired, then a 100
ppm chlorine concentration should be
allowed to stand in the system for at least 1
hour).
5. Drain the water tank and refill with fresh
water.
6. Open each faucet again and run fresh water to
flush chlorinated water from the lines. Run the
water until there is no odor of chlorine
detected in the water discharged. Do not
forget the hot water faucets.
(
You may need to leave a hot water faucet
open for some time to flush the water heater
with clean water. You may also want to turn
the water heater off until this is done to avoid
wasting energy trying to heat “unused”
water
).
7. Water system is now disinfected.
Disinfecting with City Water Fill
When disinfecting through the city water fill,
an external cartridge-type water filter assembly
must be connected in-line between the city water
Water Pump
(Located in passenger side
compartment behind rear axle)
WARNING
Chlorine is poisonous. Do not misuse.
Recap bottle and clean all utensils after
use.
