Casella CEL Vortex personal sampling pumps - Manual (Page 12)

5. FAULT FINDING
Typical problems are shown on the following table.
Symptom Possible Cause Service Hint
Pump does not switch
ON or run (Green LED
not lit).
Battery fully discharged or
unserviceable.
Recharge for 14 hours.
Wiring loom disconnected
at some point / Fault on
joint.
Locate & resolder.
Circuit / Keypad failure. Return for repair.
Pump does not run
(Green LED lit).
Pump or motor seizure. Replace pump / motor.
Broken wire or worn
brushes.
Repair connection.
Pump runs but no air
drawn.
Diaphragm rubber split. Replace.
Tubes between pump
and outlet split or
disconnected.
Replace.
Pump runs but cannot
achieve desired flow
rate.
Leak on pump assembly. Locate & Correct.
Dirty or damaged valves.
Clean / Replace.
Inlet filter clogged. Remove & Clean.
Excessive pressure drop. Check sample filter.
Red error LED lit or
flashing plus audible
alarm.
Battery voltage too low. Recharge battery.
Excessive pressure drop
or high pump current.
Remove pressure load
/ Repair pump.
Flow rate not main-
tained through full
working shift.
Incomplete charge. Re-charge.
Battery below capacity. Fully charge & check
voltagewhich should
be more than 4.8 V. If
below this level, check
the output from the
charger.
Replace battery.
High current consumption
due to mechanical defect
in pump.
Locate & correct.
Filter disc clogged. Replace.
Fault Finding
Page 12 of 16
VORTEX Standard 2 & VORTEX Timer 2
PERSONAL SAMPLING PUMPS Handbook