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Symptom
Causes
Check point & countermeasure
Leak alarm comes
out so often.
Broken bellows
Check and change pump, if necessary.
Water included in
air supplied
Drop of water mixed in pump cylinder.
Condensation of air
piping.
Pinhole of bellows.
Electrodes are conducted by condensed drop of water. (short circuited)
Check and change pump, if necessary.
Time up alarm
comes out so often.
Solenoid valve run
down
Minimum air pressure of solenoid valve becomes higher.
Air pressure to pump
becomes lower and
fluctuates.
Confirm if air is supplied correctly to preliminary side of EV2500.
Setting value in
setting screen No. 6
is too small.
Change setting value.
Fast alarm comes
out.
Pump stroke
exceeds pump spec.
It occasionally outputs at the initial starting of pump or idling at
changing liquid medicine.
Max stroke alarm may output when pump stroke exceeds stroke rate of
spec. after 10 sec., after pump started.
Take measure for your equipment so that the alarm can not be activated.
Bubbles are
mingled suddenly
during pump
operation.
(especially foamy
liquid)
Take measure for bubble not to be mingled.
Pump stops when
some alarm outputs.
Improper sequence
at equipment side.
When alarm was recognized at equipment side, equipment side will stop
pump. Function to stop pump by output of alarm effects only for leak
alarm.
