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B. Piston and Magnetic Gear Heads
When this occurs:
Check the following:
Possible Solution
When “Check Pump
Head” error occurs with
your piston or magnetic
gear head.
When was the last time you
had the head serviced?
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.
Are you pumping a gritty
solution, or one that can
crystallize if allowed to dry
out?
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.
When your piston pump
head seems to turn and
the motor runs, but no
fluid flows.
Either the piston is broken,
or the coupler is loose.
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.
Has the unit run dry?
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.
Is it a high viscosity fluid?
Magnetic gear heads do not
perform well with viscous fluids,
as they can de-couple. Either
reduce the viscosity, provide
head pressure, or choose a
different style of head.