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LIU-030 August 24, 2020 Rev10
5.1 USING FOAM
It is recommended that the Class A foam used meets USDA Forest Service 5100-307A “Specification for Fire Suppressant Foam foe
Wildland Firefighting (Class A Foam)”, or NFPA 1150 “Foam Chemicals for Fires in Class A Fuels”.
5.2 AGENT COMPATIBILITY
WARNING
Improper use of foam or using the wrong type of foam can result in illness, injury, or damage to the
environment. Follow foam manufacturer’s instructions and fire service training as directed by the
AHJ.
WARNING
For Class B fires, lack of foam or interruption in the foam stream can cause a break in the foam
blanket and greatly increase the risk of injury or death. Follow procedures established by the AHJ
for the specific fuel and conditions.
DANGER
Mixing different types of agent concentrates or agents of the same type from different
manufacturers can cause the contents of the agent reservoir to gel and produce unpredictable
results, increasing risk of serious injury or death. To reduce the risk:
• Clean tank and agent passages thoroughly when changing agent types.
• Check agent manufacturer’s documentation for recommendations.
• Always identify the contents of the reservoir per the agent manufacturer’s Technical data Sheet.
NOTICE
Components of the PRO/pak may be subject to degradation, including corrosion, by harsh
chemicals such as sodium hypochlorite (Bleach), D-limonene, and other strong solvents. To reduce
the risk of equipment damage:
• Avoid long-term storage of agents that may damage the tank, lid, or other components.
• Empty and rinse the reservoir between use.
It is the responsibility of the end user to determine the chemical compatibility between the PRO/pak
and any solutions to be stored in it. Effects of corrosion by bleach and other disinfecting
concentrates are not covered under warranty.
NOTICE
Actual mix ratio may differ from label setting. Disinfecting concentrates have significantly lower
viscosity than firefighting foams resulting in stronger solutions. Mix ratio INCREASES at pressures
below 100 PSI (7bar), and DECREASES as pressure is increased above 100 PSI (7 bar). Verify
concentration is appropriate for the intended use.
