Operating instructions
PAGE 15  www.rosco.com  MAINTENANCE 
MAINTENANCE 
1. The main fuse of the ROSCO DELTA 6000 Fog Machine is located on the circuit card 
inside the machine. NOTE: Be sure to check the specifications when replacing any fuses. 
WARNING: DISCONNECT THE ROSCO DELTA 6000 FROM POWER BEFORE 
CHECKING OR REPLACING THE FUSE. FAILURE TO DO SO COULD BE 
HAZARDOUS AND RESULT IN AN ELECTRICAL SHOCK. 
2. After every operation, the siphon hoses should be removed from the external reservoirs. 
The machine should be turned on and fog produced. When there is no more fog coming out of 
the machine, the machine should be immediately turned off. 
3. Cleaning using air: The best way of keeping the heat exchanger clear of deposits that may 
build up is to use compressed air. Blow compressed air through the port at the rear of the 
machine marked “Air Input”. The pressure of the compressed air should not exceed 35 psi. 
CAUTION: Do not use compressed air until the heat exchanger is free of fluid (see step 
#2). 
4. After every operation, only after the machine has cooled, it should be wiped with a clean 
damp cloth or paper towel. This practice prevents the build up of dirt and dust which may 
enter the machine and damage sensitive internal components. Do not use solvents for 
cleaning. Soap and water are effective. 
5. Before and after the machine is stored for an extended period, the machine should be 
properly cleaned. The best method for cleaning is using distilled or de-ionized water. To flush 
the machine, turn it on and, when ready to use, put the fluid pick-up tube into a container of 
distilled or de-ionized water. Run the water through the machine and flush for three minutes. 
The tube should be removed from the water and the machine run until nothing comes out of 
the nozzle. The machine should be immediately turned off. 
6. During use, operation of all switches and indicator lights should be monitored. Lights that 
blink or flicker when they should be on or off, for example, are an indication of problems in 
the machine's circuitry. 
FOG DISTRIBUTION 
The fog distribution in an enclosed area depends on air flow and temperature. Natural air 
movement, air conditioning and other ventilation systems will affect movement of fog. Test 
under realistic conditions before using. If a space must be filled very quickly, move the 
machine up and down and side to side. To conduct fog to particular areas, use a hose adaptor 
and ducting hose (see OPTIONAL ACCESSORIES). Make sure that there is an air space of 
3-4 in. (5-7.5 cm) between the nozzle and any ducting hose. Do not use ducting hose smaller 
than 6 in. (15.25 cm) diameter. The ROSCO DELTA 6000 works properly only in a 
horizontal position. Do not tilt the machine during operation. 










