Cla-Val 100-43 - Manual (Page 3)

TROUBLESHOOTING
If trouble is experienced with the operation of the valve, it usually
falls into one of the following categories:
SYMPTOM PROBABLE CAUSE CORRECTIVE
ACTION
Valve leaks, will 1) Trash caught Remove valve,
not close drip tight. between tube clean.
& barrier.
2) Tube diaphragm Remove valve,
failure. (very unlikely replace tube
possibility) diaphragm.
Valve will not 1) Strainer plugged Remove strainer
open, close or screen and
operates clean.
sluggishly.
2) Dirt in control Remove,
system or valve clean trim and
trim orifice. orifice.
3) Dirt in pilot Remove pilot,
valve inspect and
clean. See
specific pilot
instructions.
4) Dirt in solenoid Remove SOV,
valve or incorrect inspect and
voltage clean. Verify
correct voltage
to coil.
Pipes move, bang 1) Water hammer and/ May require
or rattle or hydraulic surge system hydraulic
analysis.
2) Valve operating Change closing
too fast speed orifice
in control
tubing, or
install opening
speed orifice
in pilot
exhaust.