Section 10
Troubleshooting
20413005
8-2012/Rev 05
10-7
Table 10-1
SL-V Series Troubleshooting Guide
Malfunction Indication Comments
17.
Red light on operator’s
console is flashing
An alarm condition has
occurred
Check the display panel for fault
messages.
Refer to Section 4, Operation,
for additional information
regarding warning and alarm
conditions and recovery
procedures.
18.
Abnormal fluctuations in
high pressure water signal
Large, worn or damaged
orifice
Make sure the orifice does not
exceed the capacity of the pump.
Make sure the orifice is in good
working condition. Verify that
the jewel is installed in the
orifice mount.
Check valve leakage Inspect the discharge check
valves in the sealing heads.
Inspect the inlet check valves in
the sealing heads.
Seal leakage Inspect the high pressure seal on
the plunger.
Inspect the sealing head-to-
cylinder sealing surfaces.
Hydraulic control
malfunction
Check the operation of the
hydraulic relief valve.
Verify that the directional
control valve is shifting
properly.
Check the operation of the
proximity switches.
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