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MAINTENANCE
Before servicing the Rosco V-Hazer, read and observe all the precautions listed in the Important Safeguards
section on pages 2-4 of this manual. Note: Any service that is NOT described in the section below must be
carried out by a Rosco service technician. Contact Rosco or your local Rosco dealer for more information on your
repair and service needs.
Exterior Cleaning
Excessive dust, fluid residue, and dirt build-up will degrade the performance of the machine and may
cause overheating to occur. To maintain adequate air flow and cooling, the outer casing and air vents
of the machine must be cleaned periodically. Damage caused by lack of cleaning is not covered by the
product warranty.
• Unplug the machine from power and allow the unit to cool completely before cleaning. Note: The
output nozzle may remain hot for up to 10 hours after use.
• Remove dust from the air vents with a soft brush, cotton swab, vacuum or compressed air.
• Clean any fluid residues from the haze output area of the machine using a damp cloth.
• Clean the outer casing with a damp cloth only.
Maintaining the Heat Exchanger
The heat exchanger is the core element in a fog or haze machine that transforms fluid into an
aerosolized fog/haze. This component operates under extreme temperatures and pressures and
should be cleaned periodically to ensure optimal performance. The Air-Input Connection was
designed to provide a fast and efficient method of cleaning the heat exchanger by purging it of
residual fluid and build up using compressed air. For lasting performance, Rosco recommends purging
the heat exchanger once a week while in production, and before storing the machine for extended
periods of time. Rosco does not recommend the use of any purified waters, chemicals or fog machine
cleaners. Use of these materials will void the warranty.
Using the Air-Input Connection
You must have a source of compressed air from an air compressor or external air tank available.
Compressed air must be clean and dry.
Allow the machine to heat until the green Ready Indicator light has illuminated. Using the push-to-con-
nect fitting, connect a ¼” OD tube from your air source by inserting the tube into the Air-Input Connec-
tion located on the rear panel of the machine. Alternately, you can use a blow gun attachment, or similar
device with a stepped nozzle, that is held against the orifice of the Air-Input Connection.
Set the air pressure to a maximum of 60 psi. Higher air pressure may damage the internal plumping
components. Blow air into the Air-Input Connection for 30 seconds, or until no additional haze or fluid
exits the nozzle.
CAUTION: Keep people and objects at least 3ft (1mv) away from the nozzle of the machine
during air purging.
To release the tubing from the push-to-connect fitting, push back on the fitting collar and pull to release
the air line.
