2 Safety instructions
Operating manual mzr-2521 and mzr-2921
Last update: June 2019
Technical data subject to change without prior notice!
9
2.4
Safety instructions for the operator
The surface temperature of the motor under full load may exceed 60°C. If
needed, this surface should be protected on site against contact in order to avoid
skin burns.
The drive should be protected against dust, water vapor condensation, humidity,
splash water, aggressive gases and liquids. Please provide for an adequate air
ventilation and thus cooling of the motor.
The micro annular gear pumps mzr-2521 and mzr-2921 must not be used in
areas exposed to explosion risks or in proximity of inflammable gases and vapors.
Possible leaks of dangerous liquids (for example from the shaft sealing) should be
guided away in a way not to represent any danger for the personnel and the
environment. The pump should be regularly checked for possible leakage. All
legal requirements in this matter should be complied with.
Take care that all risks resulting from the electric energy are excluded. For details
please refer to the instructions provided by the authorities in charge or your
power supplier.
Warning
Please insure, that the totality of the liquid supply system such as tubes, hoses,
filters etc. are free from dust or dirt particles. Impurities such as metal swarf,
plastic or glass splinters may impair or damage the pump leading to its failure.
Warning
Please, operate the pump with a filter featuring 10 µm or smaller pores. It will
protect the pump.
2.5
Safety instructions for maintenance, check and assembly of the pump
As a rule all maintenance work on the device should be performed when it is at a
standstill. The turning-off procedure described in this manual must be followed.
Pumps delivering liquids hazardous to health must be decontaminated.
Immediately after the work had been completed all safety equipment and
protection measures should be applied.
Before starting the operation, please take notice of the instructions listed in the
chapter 7.
Warning
Should a malfunction of the mzr-pump occur, do not dismantle the pump on
your own but contact one of HNP Mikrosysteme service staff for professional
assistance.
2.6
Unauthorized pump conversions and spare part manufacture
Conversions or modification to the device are only permitted with prior consent
of the manufacturer. Original spare parts and accessories authorized by the
manufacturer ensure safety. The use of other parts will annul the liability of the
pump manufacturer for any resulting consequences.