Inlet Valve Removal - Disengaging The Safety Interlock Feature - Hunter G835 Owner's Manual

inleT VAlVe ReMoVAl – diSengAging THe SAfeTy inTeRloCk feATuRe
Caution! Electric valve-in-head rotors are connected to pressurized main-line or sub-main piping. This
pressurized piping must be depressurized before servicing the inlet valve. Serious bodily injury can occur if valve
is removed when the piping is pressurized. Keep head and body parts away from the rotor's exposed internal
openings at all times. Wear proper eye protection and use the designated tools when servicing these rotors.
With the main-line or sub-main depressurized and the riser assembly removed, proceed with disengaging the g800
inlet valve's safety interlock feature as follows:
remove the water inside the rotor's body using manual hand pump. look into the body cavity and take note of the
white lower snap-ring and just below, the black top of the inlet valve (fig 76). the white snap ring may be stained from
the water making it gray or brown colored (fig 77). to help prevent removal of the inlet valve with the main-line or
sub-main pressurized, a safety interlock feature has been added to the white lower snap-ring. before the white lower
snap-ring and inlet valve can be removed, this safety interlock feature must be disengaged.
to disengage the safety interlock feature, place the tip of the 16" needle-nose pliers tool on top of the inlet valve.
next, press downward on the inlet valve. the inlet valve should move down slightly. If no movement is observed or
felt, stop and confirm that the main-line or sub-main has been depressurized.
If main-line or sub-main has been shut off, it is possible that resident pressure is still within the line and this pressure
is preventing the inlet valve from moving downward. to relieve this pressure, activate a near-by quick coupler or, turn
the rotor's selector cap to the manual on position. Warning – rotor may activate for a brief period of time. use the
16" needle-nose pliers tool to press downward on the inlet valve again. the white lower snap-ring and inlet valve are
now ready for removal.
FIg 76 FIg 77
Fig 76 Fig 77
Fig 76 Fig 77
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