De Nora Capital Controls 71V3B Series Instruction Manual
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Contents
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- 31 - 115.6031.0Although the Vaporizer may be operated at any temperature up to 205°F. It is recommended that the Vaporizer bedisassembled, cleaned and inspected when the heater Duty Cycle reaches 90%, even if the operating temperature isless than 205°F.The Duty Cycle may be timed using a stopwatch or equivalent and is determined as follows:On Time + Off Time = Total TimeDuty Cycle = On TimeTotal Time3.9 Shutdown in the Event of a Leak1) Turn on the room exhaust fan, if applicable, and take all additional safety measures deemed necessary as relatedto the extent and location of the leak.WARNINGSystem leaks and the procedures required to find leaks may cause exposure tohazardous chemicals at levels that exceed human occupancy limits. It is theemployer’s responsibility to insure that proper equipment and procedures areused to limit the employee’s exposure to the safe levels listed by theapplicable regulating agency (ACGIH, AIHA, NIOSH, OSHA, etc.)2) Close the first valve on the upstream side of the leak.3) Turn on and/or continue to operate the Gas Dispenser(s) until the gas pressure gauge on the Vaporizer orGas Dispenser(s) (whichever is applicable) falls to zero, indicating that the piping and assemblies on thedownstream side of the leak have been evacuated.If the leak is on the upstream side of the Vaporizer and is of such a nature that the corrective action will requirethe removal of a section of pipe, shut off the container supply valve and evacuate the entire system.WARNINGUnder no circumstance should the gas outlet valve and an upstream liquidvalve be closed trapping liquid chemical in the Vaporizer chamber. Doing sowill cause the rupture disc and pressure relief valve to open, venting gas.4) Correct the leak. Then before starting up the Vaporizer System, refer to the initial start-up procedure and performall steps necessary in relationship to the extent of repair. |
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