12 MSA Cairns® 1836 US
4 Maintenance
Component Cleaning Procedure
Fire Helmet Shell
WARNING!
Do not use abrasives, solvents, paint removers, acetone, paint or lacquer thinner, or any
chlorinated organic solvents to clean the fire helmet shell.
Failure to follow this warning can result in serious personal injury or death.
1. Before cleaning the fire helmet shell, remove the Defender visor. To remove the visor,
deploy the visor to the "as worn"position, then squeeze each of the quick-connect locking
arms together and pull up.
2. Use a soft sponge or cloth dampened with a solution of warm water and mild detergent, a
mild solvent such as ethyl alcohol, or a tar or adhesive remover to wipe the shell.
3. To install the visor when cleaning is complete, slide each quick-connect locking arm into the
slot from which it was removed. The quick-connect mechanisms will click into place when
they are fully engaged.
Impact Cap 1. Remove the impact cap from the assembly by disengaging the lock arms on both sides of
the helmet:
a. Using a small, flat tool, firmly push both Slide-Loks rearward approximately 1/4 inch
(6mm) until they stop.
b. Separate the helmet shell from the impact cap.
2. To clean the inside of the impact cap (in position inside the fire helmet shell), wipe it with a
soft sponge or cloth dampened with a solution of warm water and mild detergent.
NOTE: When re-attaching the Impact Cap to the Shell ensure the Anchor Base is flush
against the shell, then use your thumb to push each Slide-Lok forward, to engage the
Anchor Base, until it is flush in the pocket. Do not use excessive force or strike.
Chin Straps 1. Remove the chinstrap. (Follow the link for instructions on how to remove the chinstrap from
the fire helmet: https://us.msasafety.com/cairnsproductinfo).
2. If available, put the components in the mesh bag from the applicable MSA Soft Good
Replacement Kit.
3. Machine-wash the components with a mild liquid detergent with a pH range of 6.0 to 10.5 at
the manufacturers recommended ratio of detergent to water, at a temperature no higher
than 105°F (40°C).
4. Allow the components to air-dry completely. Do not use a heat source such as forced air to
dry components more quickly. Do not tumble dry.
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