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3
R-VAN Adjustable Rotary Nozzle Installation Guide
Troubleshooting
The following table lists common problems and solutions
associated with nozzle operation.
Problem Cause Solution
Nozzle is not rotating
or watering.
Filter screen may be
clogged with debris.
Clean screen.
Water head pressure
may be too low.
Effective pressure range
for R-VAN nozzles is 20
to 55 psi. Recommended
operating pressure is 45
psi. Check system.
A small amount of fine
grit may be inside the
nozzle.
Water path in the
rotary deflector may be
clogged with debris.
Visually inspect water paths
in the rotary deflector and
clean out any debris.
Nozzle operating
in a very sandy
environment.
Wait 2 to 4 minutes to see if
sand flushes out and nozzle
begins to rotate.
Gaps or distorted
streams in the water
spray pattern.
Nozzle operating
in a very sandy
environment.
Clean screen.
Range of water spray
from nozzles is less
than expected.
Water head pressure
may be low.
Ensure Radius Adjustment
Dial is fully open. Turn
clockwise until clicking
sound is heard. Check
system to ensure proper
pressure.
Nozzle Maintenance
debris causes degradation of performance.
1. Unscrew the rotary nozzle from the riser.
2. Remove the clogged screen.
3. Clean and replace the screen.
4. Screw the nozzle back onto
the riser.
NOTE: Rotary Nozzles may
be damaged by mowers or
other equipment. Check
the nozzles regularly to
ensure proper operation
and for safety.
Nozzle Spacing Options
This section describes the two most common sprinkler
layout designs for an irrigation zone, square spacing
and triangular spacing. Single row applications are not
recommended. Since the application rate of R-VAN
Adjustable Rotary Nozzles is much lower than standard
spray nozzles, mixing rotary and spray nozzles in the same
zone is not recommended.
NOTE: Square and triangular spacing is typically
based on 50%
.
Square Spacing
Square spacing is a sprinkler layout where nozzles are
placed in a square pattern, with the same distance between
all nozzles. This is the best pattern for areas with 90° corners
areas that overlap, causing some over watering.
Triangular Spacing
Triangular spacing is a sprinkler layout where nozzles are
placed in a triangular grid, with the same distance between
all nozzles. This works best for irregularly shaped areas. More
surface area is watered with less overlap.
FILTER
SCREEN
D40911
Cycle the system a few
times to flush. Pull up on
nozzle to flush.
!
!