Method for clearing gas lines

A method for clearing a gas line comprising the steps of:

• providing a motor vehicle including a cargo compartment containing an independently operable vacuum producing unit and a drum top separator connected to the vacuum producing unit and to an inlet valve for producing vacuum at the inlet valve when the vacuum producing unit is in operation;
• releasably securing at least one waste disposal drum in fixed position relative to the vehicle and within the cargo compartment;
• positioning the drum top separator on an open upper end of the at least one waste disposal drum;
• parking the motor vehicle at a location which allows access to the gas line to be cleared;
• chocking at least one wheel on the motor vehicle to prevent vehicle movement;
• electrically grounding the motor vehicle;
• opening all closures for the cargo compartment;
• connecting one end of an elongated flexible service hose to the inlet valve;
• connecting the free end of the service hose to the gas line to be cleaned;
• and
• operating the vacuum producing unit, thereby drawing any debris present in the gas service line through the flexible service hose and into the cargo compartment.

A method for clearing a gas service line comprising the steps of:

• providing a motor vehicle having a cargo compartment;
• supporting in the cargo compartment an independently operable vacuum producing unit having a first gas inlet and a first gas outlet;
• connecting an absolute filter to said first gas outlet;
• mounting in said cargo compartment a tubular bag separator having a second gas inlet and a second gas outlet;
• connecting said second gas outlet to said first gas inlet;
• releasably securing in fixed position in said cargo compartment at least one waste disposal drum having an open upper end;
• providing a drum top separator including a third gas inlet and third gas outlet;
• positioning said drum top separator on the open upper end of the waste disposal drum;
• connecting the third gas outlet to the second gas inlet;
• parking the motor vehicle at a location allowing access to the gas service line to be cleared;
• connecting one end of an elongated flexible service hose to the third gas inlet on the drum top separator;
• positioning a free end of the service hose near the gas service line to be cleared;
• operating the vacuum producing unit to produce vacuum at the free end of the service hose;
• removing a plug from the gas service line to be cleared;
• replacing the plug with a service hose adapter;
• and
• connecting the free end of the service hose to the service hose adapter to place the service hose in communication with the gas service line to be cleared, thereby drawing any debris present in the gas service line though the service hose and into said cargo compartment.