III. Dropmaster Operating Procedures
Before beginning, check the oil level in the reservoir, check for loose fittings, connections, and
bolts, make sure barrel drain plug is in place, and check that the basket strainer is clean and free
of debris and build up.
1. Follow normal procedure for shutting down and draining sprinkler system before connecting
the Dropmaster.
2. Connect the Dropmaster to proper electrical source (120 v 20 amp) and turn unit on.
3. Check the Fire Department Connection to make certain tight-fitting caps are in place if
above the alarm valve.
4. Close all outlets from the sprinkler system other than the one the Dropmaster will be
connected to.
5. Connect the suction side of the Dropmaster with suction valve closed, to your choice of
outlet and connect the discharge hose to a suitable drain.
6. Turn
unit on and open suction valve, allow the Dropmaster to pull a vacuum on the system.
Check vacuum gauge for proper reading of 10Hg. (Please note that the vacuum reading can be
slightly affected by temperature and elevation)
7. Open an outlet (Inspector test drain, auxiliary drain or sprinkler outlet) on far side of system
from where work is to occur. Allow the Dropmaster to remove any trapped water from the
mains.
8. When water has been removed close the outlet that was opened in step 7.
9. Begin working. Always start at the farthest point and work back toward the unit.
10. If at any point the Dropmaster gets flooded see Trouble Shooting step #5.
11. Drain barrel daily.
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