SharpShooter
®
with Rate Sync
®
- Turf Sprayer Edition
©2003, 2011, 2015 Capstan Ag Systems, Inc., All Rights Reserved | Version:
P-3.0
| 6/9/2016
9.0 - Troubleshooting
65
9.5.4 - Plunger Seal Inspection
[Figure 55]
- After extended use the soft plunger seal
will wear a groove where the seal impacts the hard
orifice seat. Replace plunger if worn or damaged.
As the groove deepens the pressure capacity of the
valve will decrease, until the pressure capacity
interferes with the operating pressure of the
SharpShooter system. The result is erratic pulsing,
often described as “flickering”.
The SharpShooter system will operate normally at
lower pressures until replacement parts can be
acquired. High operating pressures and abrasive
chemicals will accelerate the wear of the plunger seal
material.
9.5.5 - Coil Failure Test
Coil failures are often the result of two factors:
1.
Extended valve use with a plugged nozzle.
2.
Extended use in corrosive environments.
Disconnect the nozzle valve from the nozzle harness
pigtail (connector) by unplugging the 2-pin Packard
connector which is located on the spray boom.
[Figure 56]
- Use a voltmeter to measure the ohms of
resistance across pins A and B on the nozzle valve
connector.
•
7 watt valve resistance of 21-23.5 ohms.
If proper resistance is not found:
•
Clean the connector terminals.
•
Replace the coil.
Figure 55: Plunger Seal Inspection
Figure 56: Voltmeter Coil Check
Capstan recommends cleaning any
plugged nozzle valves immediately.
Capstan also recommends rinsing the
inside of the Turf system with
clean water and washing the outside
of the coils with clean water as often
as practical.
WORN OUT
NEW
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