Mueller HYDRO GUARD HG-8 Standard, User'S Operation Manual

Page: 17 / 28

Page 17 of 28
Technical Section
Disassembly of the Hydro-Guard® HG-8 InGround Sub-Surface Discharge Unit
Although the Hydro-Guard® HG-8 InGround Sub-Surface Unit was delivered
completely assembled, it may be necessary and/or desirable to disassemble portions
of the Unit, or the Unit in its entirety, in order to allow for required service and
maintenance. If disassembly is necessary, please follow the directions below. Always
close the curb stop before working on the unit.
HG-8 Machine Disassembly
Step 1
Shut off water supply to the unit and remove the green housing cover.
Step 2
Remove the cast iron lid of HG-8 protective ground sleeve.
Step 3
Remove foam insulation pad.
Step 4
Using the lifting holes and/or lifting strap in the steel platform, raise the flushing
system meter assembly to top of meter box and lock into place.
Step 5
Modular design of valve and double check valve allow for service to be completed
without removal of the devices’ bodies from the piping assembly.
Disassembly complete.