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6. Maintenance
6.1. General
The entire system must be inspected and maintained at
regular intervals.
The following points must be noted:
•
The operating instructions must be available to the
maintenance personnel and must be followed. Only
maintenance work and measures listed here must be
carried out.
•
All maintenance work, inspection work and cleaning
work on the machinery and the system must be car-
ried out with due diligence, at a safe working place
and by trained qualified personnel. The required pro-
tective gear must be worn. The machinery must be
disconnected from the power supply for all work.
Unintentional start must be prevented. Furthermore
the respective protective measures according to the
Employers' Liability Association regulations, BGV/the
Statutory Accident insurance, GUV must be complied
with when working in basins and/or containers.
•
Electric works on the machinery and the system
must be carried out by a specialist. For ex-approved
machines, you must also observe the „Ex protec-
tion" section in the annex!
•
Ensure that the required tools and materials are read-
ily available. Tidiness and cleanness ensure safe and
proper work on the machinery. Remove used clean-
ing materials and tools from the machinery after the
work has been carried out. Keep all materials and
tools in a dedicated place.
•
Service media (such as for example oils, lubricants,
etc.) must be captured in a suitable container and
must be disposed of according to the regulation
75/439/EEC and writ §§5a, 5b abfG, Waste Avoid-
ance and Management Act). Respective protective
clothing must be worn when carrying out cleaning
work and maintenance work. This must be disposed
of according to waste catalogue TA 524 02 and EC
directive 91/689/EEC. Only lubricants recommended
by the manufacturer must be used. Oils and lubri-
cants must not be mixed. Only use manufacturers
original parts.
A test run or function test of the machinery must only
be carried out according to the general operating con-
ditions!
6.2. Maintenance schedule
Monthly:
•
Check of the power input and voltage
•
Check of the used switchgears for resistance, sealed
space control etc.
Every six months:
•
Visual inspection of the power supply leads
•
Visual inspection of the cable holders and the wiring
•
Visual inspection of accessories, such as for example
suspension device, lifting devices, etc.
3,000 operating hours:
•
Visual check for pumps with oil barrier chamber
8,000 operating hours or after 2 years at the latest:
•
Testing of insulation resistance
•
Operating fluid change in seal chamber
•
Inspection and repair, if necessary, of the coating.
•
Functional test of all safety and monitoring systems.
6.3. Maintenance work
check of the power input and voltage
The power input and voltage for all three phases must be
checked regularly. In normal operation mode this remains
constant. Slight fluctuations depend on the properties of
the pumped medium. Based on the power input damages
and/or malfunctions of the impeller/propeller, bearing and/
or motor can be detected and repaired early. Major sec-
ondary damages can be prevented with this and the risk
of a total failure can be reduced.
check of the used switchgears for resistance, sealed
space control etc.
Check the used switchgears for correct function. Defec-
tive devices must be replaced immediately, since the do
not ensure protection of the machinery. Instructions for
the test procedure must be followed (operating instruc-
tions for the respective switchgears).
Visual inspection of the power supply leads
The power inlet leads must be inspected for bubbles,
cracks, scratches, scour marks and/or crushing zones.
If damages are detected, the damaged power inlet lead
must be replaced immediately.
The leads may only be replaced by the manufacturer
or an authorised/certified service workshop. The ma-
chinery must only be started after appropriate repair
of the damage!
Visual inspection of the cable holders (biners) and the
wiring (traction cable)
If the machine is used in basins/shafts the hoisting wires/
cable holders (biners) and the wiring are subject to con-
stant wear and tear. Regular inspections are required to
prevent a complete wear and tear of the hoisting wires/
cable holders (biners) and/or wiring and a complete dam-
age to the power cable.
The hoisting wires/cable holders (biners) and the wir-
ing must be replaced immediately if there are slight
signs of tear and wear!
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