Mueller HG-1, Operating Instructions Manual, Page: 2 / 11

2
HG-1 FLUSHING SYSTEM
Installation Instructions
GENERAL
INSTALLATION
Please read and retain this
manual. It will be helpful for
future reference, training,
troubleshooting, and maintenance.
Site Evaluation
Each Hydro-Guard installation is
unique and will require a minimum
of advance planning. Prior to the
installation of the device, the
drainage patterns for the intended
the dosage and contact times
recommended by the AWWA.
7. The Hydro-Guard Automatic
Flushing Device may now be
programmed and placed
into service.
Overview
The Hydro-Guard HG-1 Automatic
Flushing System, the industry’s
premium patented, programmable
flushing apparatus, is suitable for
year-round use in warm climates.
This Automatic Flushing System
has been designed, engineered,
and manufactured to provide
outstanding dependability
and performance.
Hydro-Guard HG-1 Atmospherically
Discharged Flushing Unit
1.
Remove the Hydro-Guard Unit
from its packaging and inspect for
possible damage during shipping.
2. Excavate a suitably-sized ditch
ensuring it is connected on one
side to the utility’s service line
trench. Remove any debris that
might create uneven pressure
on the Unit. Compact the bottom
of the hole in order to minimize
settling after installation. Place
#57 stone, then non-compacted
clean bedding material within the
bottom of the hole.
3. Slowly lower the Hydro-Guard
Unit into place, pressing it firmly
into the noncompacted bedding
material until it is fully seated.
4. Connect the utility’s water system
to the Hydro-Guard Unit by means
of the 2" threaded connection.
Ensure that the Unit is level before
beginning the backfilling operation
(The bottom of the ground plate
should be approximately 1" above
the final grade).
5. Backfill the hole around the Unit
with clean fill and/or #57 stone.
Backfilling should be accomplished
in 6" compacted lifts. Check that
the Unit is level.
6. Disinfect the Hydro-Guard
Flushing Device in accordance with
the utility’s policy. Do not exceed
installation location should be
reviewed. The drainage pattern must
permit discharged water to flow
away from the Hydro-Guard Unit in
the case of a backflow situation. In
cold-weather applications, multiple
nightly flushes are effective in
managing discharge volumes and
preventing the accumulation of ice.
TYPICAL INSTALLATION
Erosion
Control Plate
Sample Port Quick
Connect (HG-S116
Sample Valve Optional)
2" Control
Valve
Coupling (by others)
26"
§
UV Protected
Housing
Programmer
Dechlorination
System
Cam Lock
Release System
2" MIP Connection
(provided)
16"
Air Gap
Supply Line (by others)
2" Mueller Curb Stop (sold separately)
Mueller Valve Box
(Sold Separately)