9 Troubleshooting
RP-D58 Series
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9
Troubleshooting
The Troubleshooting does not explain the causes of all the malfunctions which occur on the pump unit.
This simply helps to find the causes of malfunctions which frequently occur. If the pump unit shows a
symptom which is not explained in this manual, or still has malfunctions even though remedial actions are
taken, please contact RIKEN KEIKI.
<Abnormalities on Unit>
Symptom/Display FAULT
Causes
Actions
The power cannot
be turned on.
―
The wiring is not correct.
Connect the wiring properly.
The terminal plate is
removed.
Connect the terminal plate properly.
Abnormalities/momentary
blackout of power supply
system
Provide the rated voltage.
Take measures such as checking or adding the UPS,
power supply line filter and insulation transformer.
Cable abnormalities
(open circuit/not
connected/short circuit)
Check the wiring of pump unit and related devices
around it.
Abnormal
operations
―
Disturbances by sudden
surge noise,
etc.
Turn off and restart the pump unit.
If such a symptom is observed frequently, take
appropriate measures to eliminate the noise.
Low flow rate
abnormality
E-5
The flow rate is low.
The possible causes are deterioration or clogging of the
pump or clogging of the tube. Check the flow rate.
Faults of the flow sensor
Replace the sensor with a new one.
System
abnormalities
E-9
Abnormalities of ROM,
RAM, or EEPROM inside
of the pump unit
Please contact RIKEN KEIKI.
