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4
Impact Sprinkler Troubleshooting Guide Continued
Problem Cause Remedy
B. Sprinkler
rotates to one
side and stops.
3. Trip spring broken or
other trip mechanism
parts damaged.
a. Metal models: Replace with trip assembly repair kit for your model.
b. Plastic models: Only trip spring is replaceable. Call our toll free hotline
for replacement springs. 1-800-RAIN-BIRD
4. Trip collar missing. a. Metal models: Replace with repair kit for your specific model.
b. Plastic models: Call our toll free hotline for replacement plastic arc ad-
justers. 1-800-RAIN-BIRD
5. Trip pin missing or not
in downward position.
a. Call our toll free hotline for replacement trip pins for most models. 1-
800-RAIN-BIRD
6. Pop-up models:
debris in case.
a. Check for debris or water in case which could restrict movement of
sprinkler head.
C. Special prob-
lems with Pop Up
sprinklers in
cases (rotors).
1. Unit will not pop up or
down.
a. Check for insufficient water pressure to fully pop up unit or seal internal
assembly.
b. Remove dirt or debris from case which may be obstructing pop up/down
action.
c. Check that internal assembly is properly screwed into case.
d. Rock or debris trapped in retract spring or spring is damaged.
e. Remove internal assembly from case using wrench available for your
model. Disassemble, inspect for damage or foreign materials, clean and
reassemble.
2. Case fills up with wa-
ter.
a. Check as in Section C-1 a and c above. If water is coming out around
seal. there may be dirt lodged between the seal and pop up shaft prevent-
ing sealing, or seal may need replacing.
b. Internal assembly may not be properly screwed into case.
c. Case installed too low without sufficient gravel drainage below sprinkler.
Try enlarging the drain holes with a screwdriver.
d. Dense, clay soil may not allow swift drainage of sprinkler even with
gravel drainage area.
D. Water contin-
ues to leak out of
sprinkler when
system is turned
off.
1. This is not a problem
with the sprinkler, but
rather with one of the two
points at right.
a. Water continues to drain out of the lowest sprinkler head on the line for
a period of time when system is shut off. The less the angle of slope and
the longer the length of pipe, the longer it takes for all the water to drain.
Consult your local Rain Bird contractor about sprinklers which contain a
built-in check valve to prevent water in the pipe from draining out of the
sprinkler head.
b. Valve controlling sprinkler line is not shutting off all the way and allow-
ing water to continue seeping through. If water continues to leak from the
sprinkler head when area has not been watered within the last day, a faulty
valve is most likely the cause.
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