Maintenance; General - Homa MX F Serie Originalbetriebsanleitung

At full load, the motor protection should be set to the rat-
ed current. In partial load operation, it is recommended to
set the motor protection 5% above the measured current
at the operating point. The starting time must be max. 5s.
The starting voltage is to be set at 40% of the rated volt-
age according to the rating plate.
Operation with frequency inverters
The machine can be operated with frequency inverters.
Note section 5.9 of this manual.
Start up with plugs/switching devices
Plug the connector into the socket provided and press the
on/off switch on the switching device.
5.10.1. After turning on
The nominal current is briefly exceeded on start-up. Af-
ter completion of this operation, the operating current
should not exceed the nominal current. If the motor does
not start immediately after switching on, it must be shut
down immediately. The switch breaks specified in the
technical data must be adhered to before turning on again.
If there is a new fault, the machine must again be shut
down immediately. The machine may only be started up
again after troubleshooting.
The following items should be checked:
• Operating voltage (permissible deviation +/- 5% of
the rated voltage)
• Frequency (permissible deviation -2% of the rated fre-
quency)
• Current consumption (permissible deviation between
phases max. 5%)
• Voltage difference between the individual phases
(max. 1%)
• Switching frequency and pauses (see Technical Data)
• Air entry at the inlet - if necessary, a baffle plate must
be attached
• Minimum water coverage, level control, dry run pro-
tection
• Smooth running
• Check for leaks: if necessary, take the necessary
steps according to the chapter „Maintenance"

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 dis-
posed of (in accordance with the 75/439/EEC direc-
tive and with §§5a, 5b AbfG). Appropriate protective
clothing is to be worn for cleaning and maintenance
jobs. This is to be disposed of in accordance with
waste code TA 524 02 and EC Directive 91/689/EEC.
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