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6. Maintenance
6.1. General
The machine and the entire system must be inspected
and maintained at regular intervals. The time limit for
maintenance is set by the manufacturer and applies to
the general conditions of use. The manufacturer should
be consulted if the system is to be used with corrosive
and/or abrasive pumped liquids, as the time limit between
inspections may need to be reduced.
Note the following information:
•
The operating and maintenance manual must be
available to the maintenance personnel and its in-
structions followed. Only the repair and maintenance
measures listed here may be performed.
•
All maintenance, inspection and cleaning work on the
machine and the system may only be carried out by
trained specialists exercising extreme care in a safe
workplace. Proper protective clothing is to be worn.
The machine must be disconnected from the electric-
ity supply before any work is carried out. There must
be no way that it can be inadvertently switched on.
Additionally, the appropriate protective measures as
defined by the BGV/GNV should be enforced when
working in basins and/or containers.
•
Above a weight of 50kg, only hoisting gear which has
been officially approved and which is in a technical-
ly perfect condition should be used for lowering and
raising the machine.
Make sure that all fastening devices, ropes and safety
devices of the hand winch are in a technically perfect
condition. Work may only commence if the auxiliary
hoisting gear has been checked and found to be in
perfect working order. If it is not inspected, danger to
personnel may result!
•
Wiring work on the machine and system must be
carried out by an electrician. For machines approved
for work in areas subject to explosion danger, please
refer to the "Explosion protection in accordance with
the regulation" chapter.
•
When working with inflammable solvents and clean-
ing agents, fires, unshielded lighting and smoking are
prohibited.
•
Machines which circulate fluids hazardous to health,
or which come into contact with them, must be de-
contaminated. It must be ensured that no dangerous
gases can form or are present.
•
Ensure that all necessary tools and materials are
available. Tidiness and cleanliness guarantee safe and
problem-free operation of the machine. After work-
ing on the machine all cleaning materials and tools
should be removed from it. All materials and tools
should be stored in an appropriate place.
•
Operating supplies such as oil and lubricants must
be collected in appropriate vessels and properly
disposed of (in accordance with the 75/439/EEC di-
rective and with §§5a, 5b AbfG). Appropriate protec-
tive clothing is to be worn for cleaning and mainte-
nance jobs. This is to be disposed of in accordance
with waste code TA 524 02 and EC Directive 91/689/
EEC. Only lubricants expressly recommended by the
manufacturer may be used. Oils and lubricants should
not be mixed. Only use genuine parts made by the
manufacturer.
A trial run or functional test of the machine must be
performed as instructed in the general operating con-
ditions.
Before maintenance or repair disconnect the mixer
from the power supply to prevent accidental starting
of the mixer!
In accordance with the product liability law we point
out that we shall not be liable for damages caused by
our product due to unauthorized repair by persons
other than the manufacturer or an authorized work-
shop or due to the use of spare parts other than orig-
inal HOMA parts. The same product liability limita-
tions are valid for accessories.
Before maintenance or repair make sure that all ro-
tating parts stand still!
Before carrying out maintenance and service, the
mixer must be thoroughly flushed with clean water.
When loosening of the oil chamber control screw,
overpressure can escape. Release the screw only
when pressure balance is secured.
If not otherwise stated, the torque values of the be-
low tables should be used.
Values stated are for clean, lubricated screws.
Fixing torque [Nm] for screws A2/A4 (Coefficient of fric-
tion = 0,2)
A2/A4,
Hardeness class 70
DIN912/DIN933
7 Nm
M6
17 Nm
M8
33 Nm
M10
57 Nm
M12
140 Nm
M16
273 Nm
M20
6.2. Maintenance
It is imperative to keep a maintenance list to be always
informed about the submersible mixer. This list must be
presented to the trade association, the technical inspec-
tion agencies and the manufacturer of the system or of
the mixer when requested.
The full warranty requires the annual inspection of the
mixer by the manufacturer of the system or of the mix-
er.
A2/A4,
Hardeness class 80
DIN912/DIN933
11,8 Nm
28,7 Nm
58 Nm
100 Nm
245 Nm
494 Nm
ENGLISH | 33
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