Waters 1500-Series, Руководство оператора

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Troubleshooting pump problems 6-3
Low pressure Pump flow rate set too
low
Set to the correct flow rate.
Low pressure limit set
too high
Set low pressure limit to
correct value.
Eluent reservoir empty Fill the reservoir.
Air in eluent lines
Prime the pump (see
Chapter 4 ).
Incorrect eluent used Change to the correct eluent.
Visible leaks Carefully tighten any loose
fittings.
Ambient temperature
has changed
Stabilize the operating
temperature.
Pump does not
run
Pump not connected to
power source
Ensure power cable is properly
connected to power source and
pump.
No power at outlet Confirm the outlet is
serviceable by connecting to
another electrical unit known
to be working. If that unit does
not work, relocate the pump to
a functioning electrical outlet.
Blown fuse Replace the fuses.
Pump not
delivering eluent
Draw-off valve open or
leaking
Close the draw-off valve. If
eluent still leaks, replace the
valve (see page 5-22 ).
Pump low-pressure
limit set higher than
operating pressure
Set to the correct low-pressure
limit.
Flow rate set to zero Set the desired pump flow rate.
Pressure transducer
out of adjustment or
defective
Contact Waters Technical
Service.
Determining pump malfunctions (Continued)
Symptom Possible cause Corrective action