Weathermatic N-100 Installation page 13

NITRO VALVE TROUBLESHOOTING
Problem
Valve will not open
manually
Valve will not open
electrically
Valve will not close
Slow leak through
sprinklers
Solution
Check water supply and any possible master or
gate valves to insure they are open.
Check that valve is installed with the arrow
pointing in the downstream direction.
Check that the flow control is fully open
(counterclockwise).
Turn off the water supply. Remove the solenoid
and check for debris blocking the exhaust port.
Turn off the water supply. Remove the cover.
Inspect the diaphragm for damage and replace
if necessary.
Check voltage at controller for 24 VAC to station.
Check voltage across the solenoid lead wires for
minimum 21 VAC.
If the valve still does not operate electrically
replace the solenoid with a Weathermatic model
M24E solenoid.
Insure the manual bleed lever is in the closed
position.
Check for leaks around flow control, solenoid or
between valve cover and body.
Turn off the water supply. Remove the solenoid
and check for debris or damage to the exhaust
port.
Turn off the water supply. Remove valve cover
and inspect for debris under diaphragm or debris
in diaphragm ports
Check for dirt or gravel embedded in diaphragm
seat.
Check actuator and exhaust fitting for proper
seating.
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