Veris Technologies MSP3 - Operating Instructions - Manual (Page 106)

Pub. #OM17-MSP3
6-32
Procedure #13: Troubleshooting Sampler Cylinder Hydraulics
The Veris pH module uses electro-hydraulics to perform the cycling functions. If the sampling shoe
hydraulic cylinder is not functioning properly, the cause of the problem must be traced to either the
electronic or the hydraulic side. This Procedure will guide you through the steps necessary to
identify the problem when the sampler cylinder in manual mode is not moving or only moves in one
direction. An overview of this procedure is shown in Figure13.1.
Figure 13.1 Flowchart for trouble-shooting sampler hydraulics.
1. If cylinder doesn’t move at all in manual mode, check hydraulic flow. Does main lift
cylinder function? If not, check tractor hydraulic lever position. If necessary, check flow with
pressure gauge.
2. Inspect LED’s on External Controller circuit board. Remove metal plate covering external
controller and inspect the solenoid LED lights, as shown in Figure 13.2. Do not remove clear lid
at this time. The L
ED’s on the UP circuit should light when the sampler up-down switch is
raised and the LED’s on the down circuit should light when the manual up-down switch is
lowered. If the four LED’s on the solenoid circuit do not light in that sequence, see Procedure
#1 to test power inside External Controller.