10 Problems and their removal
Operation manual mzr-2961, mzr-4661
Last update: April 2018
Technical data subject to change without prior notice!
37
Disturbance
Cause
Solution
the manufacturer for cleansing.
Noise of beveling
The operation of the pump should
immediately be stopped! Return the pump to
the manufacturer for cleansing and repair.
The motor surface or the motor interior are
too hot.
High temperature indicator in the drive is on.
The motor has been shut down by the
thermistor. Return the pump to the
manufacturer.
18 The pump is noisy.
Wear out of the pump or defective
components.
Do not continue to operate the pump, return
it to the manufacturer for maintenance.
19 Overcurrent
Particles in the delivered liquid
Rinse the pump.
The pump operates with difficulty.
Dosing needle is damaged. Needle should be
cleansed, flushed or exchanged.
Tubing on the delivery side, dosing needle or
the non-return valve is blocked. Cleanse,
flush or exchange the components.
Deposits inside the pump.
Flush the pump. If necessary return the pump
to the manufacturer.
20 Undervoltage
Voltage supply < 12 VDC
Check the power supply 24 VDC
21 Overvoltage
Voltage supply > 28 VDC
Check the power supply 24 VDC. The drive
control unit may be damaged. Return the
pump to the manufacturer.
table 12
Problem shooting
!
If a disturbance that has not been mentioned in the above list, or that makes
the use of the micro annular gear pump unsafe appears, please stop the
operation of the pump without delay and contact HNP Mikrosysteme (see
chapter 11). If needed return the pump to the manufacturer for checkup.
