11
Piston and Magnetic Gear Heads
When this occurs: Check the following: Possible solution
When “Check Pump Head” error oc-
curs with your piston or magnetic gear
head.
When your piston pump head seems to
turn and the motor runs, but no fluid
flows.
1.
When was the last time you had the
head serviced?
2.
Are you pumping a gritty solution,
or one that can crystallize if allowed
t o d r y o ut ?
Either the piston is broken, or the
coupler is loose.
1.
If you believe the head is stuck due to
being dried out, you can try wetting
it by placing an appropriate solvent in
the upper tubing overnight.
2.
If it still won’t turn, contact Parker
to arrange an RGA
to send your
pump in for service, or
purchasing a
service kit if you have a
magnetic
gear head.
Contact Parker for
tech support or to
arrange for service
for your pump and
RGA#.
When your magnetic pump head seems
to turn and the motor runs, but no fluid
flows.
When “Scale Error” “Hit any key”
shows on your screen.
When the pump is behaving strangely.
The aliquots are all wrong; it gets data
from the scale, but slows down way too
early; etc.
1.
Has the unit run dry?
2.
Is it a high viscosity fluid?
1.
Is your scale turned on, and are the
cables tight?
2.
Ok, the scale is on, the cables are ok,
and it still won’t work?
3.
Ok, the scale is chosen correctly, and
you still get no data?
1.
Has someone else used with
your LabTec™?
2.
Have you had electrical problems
in the building lateley?
1.
Magnetic gear head pumps do not
dry prime well after they have been
broken in. You must keep the pump
wet. Be sure you are using a check
valve as your dispensing tip so the
fluid doesn’t run back into the
container.
2.
Magnetic gear heads do not perform
well with viscous fluids, as they can
decouple. Either reduce the viscosity,
provide head pressure, or choose a
different style of head.
1.
Press any key to clear the error,
tighten the cables, turn on the scale,
and try it again.
2.
Check Section 4. Setup: Scale of this
manual, then go to Setup Mode of the
pump, select Scale, then Scale Mfr.
and confirm the selection is correct.
3.
Either refer to the same manual
section mentioned above to check
the settings on the scale itself, or
call Parker for technical support
help in correcting
them.
1.
If someone other than yourself or
your supervisor has changed the
settings without your knowledge,
you can return them to their original
settings.
2.
Power spiked and brown outs can
cause problems. Enter Setup; Pump,
and then select Factory Reset. This
step is a last resort. This will return
the unit to the factory default values.
You will need to return to Setup;
Pump; Motor RPM, and verify its
setting, as well as Setup, Pump;
Pump Head to verify it as well. You
will also need to re-enter all your
aliquots and re-calibrate them. Call
Parker domncik hunter for technical
support if needed.
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