MSR GUARDIAN GRAVITY - Disinfect Purifier; Prepare for Disinfection; Disinfect with Bleach Solution; Post-Disinfection

To eliminate the growth of bacteria or mold, which can
slow flow rates, always disinfect the purifier BEFORE
long-term storage (15+ consecutive days).
4. DISINFECT PURIFIER
5.
3.
1— 2
7.
7.
8.
6.
5.
1. Disconnect Inlet Hose from Dirty Water Reservoir.
2. Rinse reservoir with tap water to remove any debris
from Prefilter Screen.
3. Ensure Shutoff Clamp and Purge Valve are closed.
4. Fill Dirty Water Reservoir with at least 3 liters of warm
tap water and reattach Inlet Hose.
5. Open both Purge Valve and Shutoff Clamp. Filter
water through system. Close Purge Valve and
Shutoff Clamp.
6. Refill reservoir with 2 liters of clean water and add 5
mL (≈ 1 tsp) of household bleach free of dyes or
perfumes (5.25%-8% chlorine concentration).
7. Place Bottle Adapter in sink. Hold or hang reservoir
above sink.
8. Open Purge Valve and Shutoff Clamp and filter ½ of
bleach solution through system into sink.
9. Close valve and clamp. (Purifier Cartridge should now
be filled with bleach.)
10. Wait 30 minutes.
11. Run second ½ of bleach solution through cartridge,
but STOP just before Dirty Water Reservoir is emptied
(so that bleach remains in cartridge).
12. Wait another 30 minutes.
13. Drain all solution from system.
14. Air or towel dry system parts completely, leaving all
hoses attached. (NOTE: The bleach in the cartridge
will prevent the growth of harmful microorganisms and
biofilm inside.)
15. Pack and store Guardian Gravity system in storage
sack.
After long-term storage, before using the purifier, filter 2-3
liters of water through the system to rinse it.
DO NOT disassemble and dry out the Purifier Cartridge before storing
it. If the cartridge’s internal fibers dry out, they will no longer pass water; the cartridge must stay
wet inside.
WARNING
DO NOT use more bleach than recommended, as doing so can damage
the fibers.
WARNING
Disinfect the purifier thoroughly before long-term storage to prevent the
growth of mold, mildew and bacteria. Never use a dishwasher or microwave to disinfect parts because
the high heat will damage or melt them.
WARNING