Klingenburg CERTO, Documentation, Page: 24 / 52

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Maintenance and operation
Hoses
The connection hoses on the high- and low-pressure
sides should be checked to ensure they remain in good
working order. If any cracks or damage are noticed on the
high-pressure hoses, they must be replaced. Defective
hoses should be clearly labelled or taken out of service.
The hose connections must be checked to ensure firm
mounting and watertightness and tightened if required.
During a final cleaning procedure, e.g. preparation for
humidification downtime, all water-filled parts should be
emptied and dried out.
High pressure hose
Every high-pressure hose line is subject to DIN 20666
Irrespective of the hose marking, at least the following
information must be permanently marked:
Name or plate of the manufacturer
maximum operating pressure
year
production month
Replacement of hydraulic hose assemblies.
In principle, all high-pressure hose lines are subject to natural aging
during expert storage and permissible stress during use, which alters
the material and composite properties and reduces the efficiency of the
hose line.
The service life of a hose is limited and the operator must ensure that
hose lines are replaced at appropriate intervals.
The maximum service life as well as the
maximum use of a high-pressure hose can be
found in DIN 20066.
Drive belts
Checking of the drive unit, particularly the tension of the drive belt
between motor and pump. The control must be set and checked by a
suitable preload meter.
A twisting can lead to cracks in the gas-fiber core of the belt. The leads
to the final tearing of the belt.
Distributors, nozzle heads, nozzles
If the maximum frequency according to the data sheet
varies from the design pressure by more than +/ - 20%,
the nozzles must be cleaned or replaced. We also rec-
ommend visual inspection of the spray cone for uniform
atomisation.
Instructions for cleaning the nozzles
Unscrewing nozzles
Place component parts in cleaning agent / disinfectant
Rinsing with water
Rinsing of the HP hose, distributor and nozzle holders
with the above cleaning agent followed by fresh water
Purging with compressed air
Screwing nozzles into the nozzle holder / replacing
sealing rings
The service life of a nozzle depends on the process
conditions under which it is used. For example, pressure,
temperature and the liquid flowing through the nozzle have
a decisive influence on the service life. A nozzle is there-
fore a wearing part
whose service life depends on many influencing factors.