I don't have access to the shot feeder, the building is managed by 2 management companies I only have access to the 1st floor, I used to treat the system, but the management company I work for sold the 2nd thru the 5th floor, the boilers are in the penthouse, the only time anyone goes in there...
The risere are plugged in the closed loop they are sch80 I used to use compressed air but they are so brittle they burst when I use compressed air now I was thinking using a shop vac to try to suck the debris out any suggestions?