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9. Troubleshooting
9.1 Sprinkler malfunctions
Malfunction Cause Remedy
Sprinkler not rotating or only
very slowly.
Sprinkler not rotating at all.
Sealing disc worn out Change sealing disc
Driving nozzle clogged Unscrew driving nozzle and clean
Minimum pressure of 43.5 psi not
reached
Increase pressure
Sprinkler has poor jet Nozzle is blocked Unscrew nozzle, remove and clean.
Sector angle gets bigger during
operation.
Spring stop is loose.
Spring force has slackened.
Spring stop has been
overextended.
Fit new spring stop.
Valve opens/closes only with
manual opening, but not on any
electric signal
Screw for <Manual opening> is set
to OFF
Turn screw to the left as far as it will
go, to Auto.
Core is jammed in the coil Remove coil and clean core
No / inadequate power supply Establish 24V AC power supply
Defective coil Check coil resistance (should be ap-
prox. 35 ohms). Replace if necessary.
Relief channel for coil blocked Clean channel
Control pipe to the solenoid
clogged or bent
Replace control pipe
Valve fails to open even with
manual opening
Control water hole or relief hole
blocked
Clean control water / relief hole
Supply line under no / insucient
pressure
Establish pressure supply
Valve fails to close
Coil seat dirty Clean coil seat
Bits of dirt between valve seat and
sealing plate
Clean valve seat and sealing plate
Defective membrane Remove valve and replace membrane
Control water lter dirty or
Control water lter of the valve
lter dirty
Clean control water lter
Control pipe defect Change control pipe
Output pressure at sprinkler
nozzle too low or casting range
too short
Stones and bits of dirt are hinder-
ing an unimpeded passage of water
Clean valve and ush sprinkler
Valve insert is blocked Clean valve insert see point 8.3
We reserve the right to make changes in line with technological advances, including without prior notication.
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