MSR GUARDIAN GRAVITY Instruction Manual

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Retain these instructions for future reference.
© 2021 Cascade Designs, Inc., USA | 4000 First Avenue South | Seattle, WA 98134 U.S.A. | 1-800-531-9531 | 1-206-505-9500
Cascade Designs, Ltd., Ireland | (+353) 21-4621400 www.msrgear.com | infor@cascadedesigns.com
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IN S T R UC T ION MA NU AL
GUARDIAN™ GRAVITY PURIFIER
Read and understand this entire manual carefully before assembling or using this water
filter. Keep this manual for future reference. If you do not understand this manual or
have any questions, please call Cascade Designs at 1-800-531-9531.
There are hazards associated with backcountry travel and international travel and the use of water filters and purifiers. Drinking untreated
water may expose you to harmful microorganisms and increase your risk of gastrointestinal illness. Using this purifier improperly increases
your risk of exposure to harmful microorganisms and increases your risk of gastrointestinal illness. Reduce your chances of becoming sick
by following the warnings and instructions in this manual and educating yourself on backcountry water safety.
YOU ARE RESPONSIBLE FOR YOUR OWN SAFETY AND THE SAFETY OF THOSE IN YOUR GROUP. PLEASE USE GOOD JUDGMENT.
Never use the Guardian Gravity to purify seawater or chemically contaminated water, such as water from mining tailing ponds or near
large agricultural operations. The Guardian Gravity does not make drinkable water from these sources and does not remove all chemicals
and radioactive materials, or particles smaller than 0.02 microns. Keep the hoses and other potentially contaminated parts away from
purified water to prevent cross contamination.
READ, UNDERSTAND, AND FOLLOW ALL instructions and warnings in this manual before using this filter. Failure to follow warnings and
instructions may result in gastrointestinal illness.
GUARDIAN™ GRAVITY

PURIFIER INSTRUCTIONS

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The Guardian Gravity Purifier uses advanced hollow fiber technology to
remove viruses, bacteria, protozoa and particulate, and employs activated
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carbon to reduce chemicals, tastes and odors, from fresh water sources.
PURIFIER PARTS:
A. Hang D-Ring G. Inlet Hose Barb
B. Closure Strap H. Purifier Cartridge
C. Hang Strap I. Outlet Hose Barb
D. Closure Buckle J. Inlet Hose (40 in / 102 cm)
E. Prefilter Screen K. Dirty Water Reservoir
F. Inlet Hose Disconnect L. Universal Bottle Adapter, Inner
IMPORTANT NOTES:
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WARNING
The Purge Valve releases concentrated dirty water. DO
NOT allow any drops to splash into your clean water. Cross-contamination
can expose you to microorganisms and increases your risk of gastrointesti-
nal illness.
• Air trapped in the cartridge may reduce water flow. Release the air by
opening the Purge Valve to flush the dirt and air until the water color
matches the source water and is free of bubbles. Holding the cartridge
horizontally or gently tapping the cartridge as water flows helps release
the air.
• 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.
• On extended trips, bring along a spare cartridge.
Tips for best performance:
• Use the cleanest, clearest water available, as silty, cloudy, muddy,
tea-colored or glacial stream water will more quickly clog the cartridge.
• If clear water is not available, let particles settle to the bottom of the
Dirty Water Reservoir before filtering. Clear the Prefilter Screen behind
the Female Quick DISCONNECT as needed.
• To maximize water flow, hang the Dirty Water Reservoir as high as pos-
sible without pulling the clean container off the ground.

IMPORTANT

WARNING
BIOLOGICAL HAZARD
M. Universal Bottle Adapter, Outer
N. Shutoff Clamp
O. Outlet Hose (30 in / 76 cm)
P. Clean Side Cover, Inner
Q.Clean Side Cover, Outer
R. Purge Valve