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A fog machine on a bench with its manual open beside it

Fog machine troubleshooting

No fog, weak fog, or leaks: start with the manual.

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Fluid and warm-up

Check the tank has the named fluid and the machine has finished warming up.

Clogging

One maker says fog and haze machines are prone to clogging, and regular cleaning helps. Cleaning and storing a fog machine

Air in the line

The same maker says a false empty-tank reading may come from an air bubble in the fluid line, and gives steps to clear it.

Leaks and damage

One maker's manual says to stop using the product immediately if there is a serious operating problem, and not to attempt repairs. Contact the maker.

Sources: Chauvet DJ, Fog and Haze Warning Sheet; Chauvet DJ, Hurricane 1200 User Manual. Brand names belong to their owners. We are not affiliated with or endorsed by them.

FAQ

One maker says not to attempt repairs.
Some machines stop to reheat. Check the manual.

General information only. Follow your machine's manual and the label on any fluid. Fog and haze can set off smoke alarms and make it hard to see. Never disable an alarm. Check the venue's or building's rules before you use any effect. Dry ice can cause frostbite and gives off carbon dioxide, which can build up in low or enclosed spaces. Never touch it with bare hands, never seal it in a container, use it only with good ventilation, and keep it away from children and pets. Anyone with asthma or another breathing condition should ask a doctor before being around fog, haze, or dry ice effects.

Next: cleaning and storing

Cleaner, then storage.