7
Disassembly / Reassembly Instructions
HG-8 COLD CLIMATE FLUSHING SYSTEM
TOOLS NEEDED:
Philips screwdriver, flat-head screwdriver, HG-20087 T-handle wrench
HG-8 DISASSEMBLY AND REASSEMBLY INSTRUCTIONS
4.
To prevent the loss of the
solenoid plunger and spring,
place an object or have a finger
over the plunger of the solenoid.
Allow the plunger enough space
to kick out of the solenoid body
into the object or finger hovering
over it.
5.
If test is successful, return the
flush / meter assembly to its
operating position below grade.
6.
Return insulation pad and cast
iron meter lid to their
proper positions.
If everything checks out,
the electrical system is in
working order.
Valve Disassembly and Check
1.
Remove six (6) bolts from
top cover.
2.
Slowly pull cover off the valve.
3.
Remove rubber diaphragm and
inspect for holes or worn areas.
4.
Be certain to avoid contacting
the EPDM rubber diaphragm
with pipe putty. Pipe putty can
cause the rubber to thin out and
leak.
5.
Remove the valve screen plug on
the lower half of the valve body.
Be careful not to exert too much
force when pulling plug out.
6.
Check for debris in the valve
screen on the inlet side with the
lower half of the valve body by
removing the valve screen plug.
7.
Return valve plug to its
proper location when debris
screen is cleared.
8.
Replace the top cover back onto
the diaphragm – make sure to
line up the openings in both.
9.
Match up the top cover of the valve
with the bottom portion. The arrows
have to align on both portions.
10.
Replace the bolts and
tighten down.
Although the Hydro-Guard HG-8
Cold Climate 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.
Disassembly
1.
Shut off water supply to the
unit and remove the green
housing cover.
2.
Remove the composite or
cast iron lid of HG-8 protective
ground sleeve.
3.
Remove foam insulation pad.
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.
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.
Electrical System Check
1.
Pull internals of HG-8 to top of
PVC in-ground protective housing
and lock into place.
2.
Unscrew solenoid from valve – be
careful to not drop the
solenoid plunger and spring into
in-ground housing.
3.
Using the TBOS-II handheld,
connect the infrared connector of
the handheld to the antenna on
the controller interface mounted
inside of the device. Using
the programming keys of the
handheld run a 2 minute manual
flush sequence.
NOTE: Plunger inside solenoid
should be down when running and
up when off.
WARNING: Avoid overuse of
pipe sealant and never allow
sealant to come into contact
with EPDM rubber diaphram.
Reassembly
1.
If any disassembly has been
conducted of the control valve
and/or double check valve,
verify that all bolts are properly
tightened. Check assemblies
for leakage prior to lowering
flushing / metering assembly back
into position below grade.
2.
Using lifting holes and/or
lifting strap on steel plate, lower
flushing / metering assembly
below grade by slowly lowering the
steel mounting plate to the lower
part of the in-ground protective
housing (DO NOT apply excessive
force to assembly).
3.
Turn water supply to the unit
on. Using the TBOS-II handheld
controller, run a two minute
manual flushing procedure to
confirm all components are
operational.
4.
Return insulation pad and cast
iron lid to their proper location.
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