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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. Un-
intentional start must be prevented.
• Electric works on the machinery and the system
must be carried out by a specialist.
• If easily inflammable dissolvers and cleaning materi-
als are used, open fire, open light and smoking are
prohibited.
• 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.
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
Every six months:
• Visual inspection of the power supply leads
• Clean the collecting tank
6.3. Maintenance work
Visual inspection of the power supply cable
The power supply cable must be checked for bubbles,
cracks, scratches, scuff marks or pinch points. When de-
tecting damage, the power supply cable must be replaced
immediately.
The cable may be replaced only by the manufacturer
or an authorized or certified service center. The ma-
chine may only be put into operation once the damage
has been properly fixed!
Cleaning the collecting tank
First disconnect the tank from the power supply. Then re-
move the lid from the lifting unit by loosening all the lock-
ing clips. Now rinse the container thoroughly with clear
water. Then close the container with the lid. Depending on
the type of container, also fasten the closing clips.
7. Shutdown
7.1. Temporary shutdown
For this type of shutdown, the machine remains installed
and is not cut off from the electricity supply. For tempo-
rary shutdown, the machine must remain completely sub-
merged so that it is protected from frost and ice. Make
sure the operating room and the pumped fluid cannot be
covered by ice. This ensures that the machine is always
ready for operation. During longer shutdown periods, car-
ry out a regular (monthly to quarterly) function run for a
period of 5 minutes.
Caution!
Only carry out a function run under the proper con-
ditions of operation and use. Never run the machine
dry. This can result in irreparable damage!
7.2. Final shutdown / storage
Switch off the system, disconnect the machine from the
electricity supply and dismantle and store it. Note the fol-
lowing information concerning storage:
Beware of hot parts!
When removing the machine, be careful of the tem-
perature of the housing components. These can heat
up to well above 40°C. Let the machine cool down to
ambient temperature before you touch it.
• Clean the machine.
• Store it in a clean, dry place, protect the machine
against frost.
• Place it down vertically onto a firm foundation and se-
cure it against falling.
• Seal the intake and discharge ports of pumps with
suitable material (such as foil).
• Support the electric connecting lead on the cable
lead-in to help avoid a permanent deformation.
• Protect the ends of the electric power cable from
moisture.
• Protect the machine from direct sunshine as a pre-
ventive measure against brittleness in elastomer
parts and the propeller and casing coating.
• When storing the machine in a garage please remem-
ber: Radiation and gases which occur during electric
welding destroy the elastomers of the seals.
• During lengthy periods of storage, regularly (for ex-
ample every six months) turn the impeller or propeller
by hand. This prevents indentations in the bearings
and stops the rotor from rusting up.
7.3. Restarting after an extended period of storage
Before restarting the machine, clean it of dust and oil de-
posits. Then carry out the necessary maintenance actions
(see “Maintenance”). Check that the mechanical shaft
seal is in good order and working properly. Once this work
has been completed, the machine can be installed (see
“Installation”) and connected to the electricity supply by
a specialist. See “Start-up” for instructions on restarting.
Only restart the machine if it is in perfect condition and
ready for operation.
