Low Point Drains; Sanitizing The Fresh Water System - Damon Astoria Pacific Edition Owner's Manual

Chapter 6 - Plumbing Systems

LOW POINT DRAINS

SANITIZING THE
SYSTEM
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Low point drains are located either in the holding tank compartment or in a rear storage
compartment on the driver's side of the coach. These drains are used when the system
is to be completely cleared of water.
You should sanitize and disinfect the fresh water system upon delivery of the unit and
at least once per year or whenever the motorhome is unused for prolonged periods of
time. This will help keep your water system fresh and discourage the growth of viral and
bacterial contamination, which may be contained in your water supply. Use a chlorine
and fresh water rinse as follows:
1. Drain the fresh water tank by opening the drain valve. All of the faucets should be
in the closed or off position.
2. Prepare a solution of 1/4 cup household liquid chlorine bleach (5% sodium
hypochlorite) to one gallon of water for every 15 gallons of tank capacity. Do not
pour bleach straight into tank. Bleach must be diluted in water prior to filling.
Example: Add four 2/3 gallons solution to a 70 gallon tank.
Add five 1/3 gallons solution to a 80 gallon tank.
Add six 1 gallon solution to a 90 gallon tank.
Add six 2/3 gallons solution to a 100 gallon tank.
This mixture puts a 50 PPM (parts per million) residual chlorine concentration
in the motorhome's water tank. This will act as quick-kill dosage for some
harmful bacteria, viruses, and slime-forming organisms. Concentrations higher
than 50 PPM may damage water lines and/or tank.
3. Close all faucets and drains, and fill the fresh water tank with the rinse solution
through the potable water fill.
4. Turn on the pump switch and circulate the rinse solution throughout the entire
system.
5. Once the rinse solution has been circulated through the entire system, fill the fresh
water tank until it is full.
6. Close all faucets and drains and let the system sit for approximately three (3)
hours.
7. Drain the entire system.
8. Flush the complete system with fresh water until chlorine odor disappears.
9. Finally, close all drains and fill the fresh water tank as you normally would. Make
sure the water heater has water in it prior to igniting.
Chlorine is poisonous. Recap bottle and clean any appliances used
with soap and water.