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TROUBLESHOOTING GUIDE
WARNING:
The fire hydrant must be isolated before performing any maintenance. Failure to do so may cause pressure to
be released resulting in severe injury or death.
Several problems and solutions are presented below to assist you in troubleshooting the hydrant.
PROBLEM: Hydrant slams shut while closing.
Probable Cause:
Play in Stem Rod assembly due to wear in Stem Rod Couplings.
Corrective action:
Inspect Breakable Coupling and Extension Coupling ( if present ) for wear and replace if
necessary.
PROBLEM: Hydrant hard to operate.
Probable Cause:
Operating Nut/ Thrust Nut assembly too tight.
Corrective action:
Remove the Weathershield to access the Lockplate and remove the Lockplate. Tighten the
Thrust Nut completely into the Nozzle section then back off 1/8 to 1/4 turn until the Thrust
Nut aligns with the first available notch in the Lockplate. Re-install the Lockplate and
Weathershield.
Probable Cause:
Operating Nut not lubricated.
Corrective action:
Disassemble the Operating Nut/Thrust Nut assembly. Clean and re-lubricate using a food
grade
grease.
PROBLEM: Nozzle facing the wrong direction.
Corrective action:
Loosen the Nozzle Section hardware and carefully rotate the Nozzle Section to the desired
position. Tighten the mounting hardware to 80 Ft. Lbs..
PROBLEM: Hydrant opens but will not close.
Probable Cause:
The Breakable Coupling or Extension Coupling has broken or become disconnected.
Corrective action:
Remove the Nozzle Section and replace the affected Coupling.
Probable Cause:
Stem Rod assembly has been over torqued, broken, or become disconnected from Main
Valve.
Corrective Action:
Contact American AVK Sales Representative for further troubleshooting and special tool
requirements.
PROBLEM: Hydrant will not drain.
Probable Cause:
Drain holes may be plugged or blocked.
Corrective action:
Loosen the Hose Nozzle Cap and slowly open the hydrant until water escapes from the
nozzle.
DO NOT STAND IN FRONT OF THE NOZZLE! Tighten the cap and force flush the
drains. If the hydrant continues not to drain, the hydrant may have to be excavated to verify
that the drains have not been blocked buy concrete support.
Summary of Contents for 2700 SERIES
Page 7: ...page 6 Fig 2 Internal Drain Plugging F55 F51 ...
Page 27: ...page 26 ...
