4
Disassembly and Reassembly Instructions
HG-4 SUB-SURFACE DISCHARGE UNIT
4.
Conduct a system test upon
completion of installation. Run a
two minute manual flush test.
NOTE: Plunger inside solenoid
should be down when running and
up when off.
5.
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.
6.
If test is successful re-assemble
unit.
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.
Although the Hydro-Guard®
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-4 Battery Replacement
1.
Remove protective external
cover and unlatch the cover of the
Internal protective sleeve.
2.
Unscrew the cap off the
watertight housing of the integrated
Bluetooth programming interface.
Pull the battery box out of the
watertight housing. Replace 9-volt
battery with a 9-volt lithium battery.
3.
Place the battery back into the
watertight integrated Bluetooth
programming interface making
certain to tighten the screw-on lid
until snug.
4.
Relatch the cover of the internal
in-ground, protective sleeve and
return the external housing to its
proper location.
Disassembly
1.
Shut off water supply to unit and
remove the green housing cover.
2.
Unlatch hasp on hinged cover of
HG-4 protective ground sleeve.
3.
Push both handles down to
release banjo coupling from the
bottom plate.
4.
Pull straight up to remove the
Internal assembly.
Electrical System Check
1.
Disassemble unit.
2.
Unscrew Solenoid and be careful
NOT TO LOSE THE O-RING.
3.
Using the a standard iOS
and Android cellular phone, and
the K-Rain App (free), begin
programmable procedure.
9.
Match up the top cover of the
valve with the bottom portion.
The arrows have to align on both
portions.
1O.
Replace the bolts and tighten
down.
Reassembly
1.
Install internal assembly into
body, handles facing down. Set unit
straight down until it rests on the
male banjo coupling. Pull handles
up to lock Into place.
2.
Return hinged cover to its correct
position and relatch the hasp lock.
Secure with a padlock if so desired.
3.
Turn on the water supply to the
unit. Using the a standard iOS or
Android phone (recommend phone
be two years old or newer), and the
K-Rain App, conducted a 2 minute
manual flush test.
4.
Install the housing cover over the
unit and lock in place.
HG-4 DISASSEMBLY AND REASSEMBLY INSTRUCTIONS
TOOLS NEEDED: HG-A2023 Security Tool, Philips screwdriver, flat-head screwdriver
Summary of Contents for Hydro-Guard HG-4
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