Campbell PVS5120 Series, Instruction Manual

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PVS5120-Series Portable Samplers
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not move on the cover. Ensure the top nut is securely tightened, by using
correct wrenches.
5. If system is still not performing at its peak, inspect pump and all pump
tubing.
9.1.5 VSC100 Maintenance
The only maintenance for the controller is to replace its battery (see Appendix
E , Lithium Battery Replacement
(p. E-1)
).
9.2 Troubleshooting
9.2.1 Common Troubleshooting Scenarios
Symptom #1: Sampler does not pull a sample or purge while running:
•
Check all connections and intake line for loose fittings or plugged intake
hose. Tighten loose fittings and replace plugged intake hoses.
•
Verify that wing nuts and brass gland nuts on the meter chamber cover are
tightened and the cover is on correctly.
•
Spray dish soap/water mixture on metering chamber cover, blue intake
hose connection, 1/4 inch air tubing and then check for bubbles during the
purge cycle. Fix leaks by replacing hoses, tightening connections, and
replacing chamber cover.
• Remove blue intake hose to metering chamber and place your thumb on
stainless steel intake tube; is there pressure or suction on it at any time
during the sampling process?
•
Check the pump and vacuum pressure. The maximum pump pressure
should be above 28 psi (on new pumps); vacuum pressure typically is
around 12 to 22 psi (on new pumps). The sampler only tries twice before
shutting down if a successful sample is not taken. Pump may need to be
rebuilt or replaced. This requires the following parts:
o pn # 28333 Sampler Replacement 12 Vdc Vacuum Pump
o pn # 28620 Service Repair Kit for sampler vacuum pump
o
pn
#
26895 brush and lead wire repair kit for sampler vacuum pump
Symptom #2: Sampler does not switch from vacuum to purge when contact is
made with the conductivity rod:
• Clean volume control tube and conductivity rod.
•
Push and release the Manual Control button twice to induce a Manual
Sample. Short across the volume control tube and liquid
sensing/conductivity rod with screwdriver to switch sampler from vacuum
to purge simulating a successful sample. If it does not switch,