Ultratec PFI-9D manual Operation Procedure LSG MK II Low Pressure w/ 350lbs Dewar Tank

Operation Procedure

LSG MK II Low Pressure w/ 350lbs Dewar Tank

The Operation Procedures outlined in this section, refer to Figure C on Page 12.

1.Place the fog machine’s output nozzle firmly against the center of the foam ring sealing it to the input port of the

LSG MK II.

Tech Tip: Proper alignment can be observed by shining a flashlight into the 10” exit port of the LSG MK II and noting the fogger’s output nozzle is centered on the LSG MK II input port.

2.Connect the blue Twist lock connector from the LSG MK II into the controlling power source (i.e. control port on the rear panel of the Power Fog Family of Ultratec Special Effects Foggers). This port can be controlled via DMX, the Timer/ Duration Remote or the Show Control Remote.

Note: Starting the flow of CO2 before the fog allows the liquid CO2 to purge the gas CO2 from the lines. The Liquid CO2 is required for correct operation. The rule of thumb formula for calculating the purge time is 1 second for every three feet of hose. As the liquid sits in the hose unused it absorbs heat and converts to its gas state.

3. Use Molecular Fog Fluid and adjust the flow rate to desired fog output level. Excessive fog flow will not cool sufficiently allowing the fog to rise off of the floor.

4.An LSG MK II Low requires low pressure Liquid CO tanks. These are normally available in a 350lb size. These are large vacuum tanks which keep the Liquid CO2 cold. Some CO2 is consumed during storage to maintain the liquid at -56C. These tanks provide the best performance and price characteristics of the LSG systems. Check with your local gas supplier for availability as not every location may carry these tanks.

Warning: Wear eye protection and gloves to protect against cold and pressure hazards.

5.You must connect the supply hose to the liquid output of the liquid CO2 tank. This is usually clearly indicated on the Liquid CO2 Tank outputs. A sealing washer is necessary to prevent leaks and is available from your gas supplier.

6.Tighten the CO2 supply-fitting snug with the appropriate wrench.

7.The tank pressure is indicated on the pressure gauge and must read between 275 - 340 psi to operate the LSG MK II. This is achieved by opening the Pressure Builder Valve (by turning it counter clockwise) at least 1-3 hours in advance.

8.Open the valve slowly counter-clockwise until flow can be heard. Verify the lines have no leaks before opening the valve fully.

9.When the fog machine is up to operating temperature, activate the control to start the CO2 for the desired purge and pre-chill time. Purging of the CO2 gas can be noted by the change in the flow sound. It is often desirable to pre-chill the chamber and long runs of ductwork (i.e. Fog Curtain). Now add fog to create the thick, white rolling blanket that hugs the floor. On the Power Fog Family of Ultratec Special Effects Foggers, the CO2 is triggered by DMX (DMX channel + 1) or by one of the remotes. To control using the remote, the DMX address is selected as 555. This allows the Duration knob (turned up over 1/2 way) of the Timer/ Duration Remote or the second channel of the Show Control Remote to trigger the LSG MK II.

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