23
Maintenance of pump station
Pump
The oil should be changed after the first 200 operating
hours and subsequently after every further 2500 op-
erating hours. When it is time time for an oil change, a
service message is shown. The oil change must also be
performed at the prescribed intervals, regardless of other
regular maintenance, and no later than every 6 months.
When operating the unit in humid areas, or when it is
exposed to considerable fluctuations in temperature,
condensed water may form in the crankcase. Defective
seals may also result in water infiltrating the unit.
The fill level and water content of the pump oil should
be checked via the sight glass and when the pump is
switched off, 2x monthly or a minimum of once a month.
The sight glass must be half-covered at all times and the
oil must always have a clear appearance.
In the event of clouding or foaming, immediately change
the oil, otherwise the pump may be damaged.
Oil fill volumes for high pressure pumps:
NP 10/01-160 0,22 litre
NP 10/02-140 0,22 litre
NP 10/04-140 0,24 litre
NP 10/07-140 0,24 litre
NP 10/10-140 0,24 litre
NP 10/13-140 0,24 litre
NP 10/15-140 0,24 litre
NP 16/21-140 0,48 litre
Oil quality:
Gear oil ISO VG 220 GL4 (e.g. Aral Degol Bg220)
or KFZ-gear oil SAE 90 GL4
Caution!
Used oil is hazardous waste and must be disposed of in
an environmentally friendly manner according to the local
waste regulations.
Note for enhanced operational reliability,
e.g. for production plants
To further enhance the operational reliability of the
CERTO, we recommend replacing the following wear
components as a precautionary measure as part of
maintenance operations. The actual attainable service
life of these parts is considerably higher than the speci-
fied values.
We recommend replacing water pump seals every 4000
operating hours. The assembly instructions for the repair
kit should be observed.
We recommend replacing the valves of the pump every
4000 operating hours. The assembly instructions of the
repair kit should be observed.
After a downtime of more than three months, a mainte-
nance with cleaning of the spray system, and an oil and
O-ring change on the high-pressure pump is advisable.
In general, the pump should be switched off after a
longer standstill, a time of 5 - 10 min. flushed with water
before the Regelbetreib is turned on.Hier this favors the
swelling of the seals and reduces the leakage.
Generally, every plunger pump has an operational leak.
This can be up to 150ml per day.
Filter
Generally speaking, the filters should be rinsed dur-
ing each maintenance operation. The supply lines to
the pump station including filter can be rinsed via the
magnetic valves underneath the filter casing. The rins-
ing interval and duration of the rinsing process can be
adjusted via the controller. Where applicable, the filter
cartridge should be cleaned or replaced once it has
been removed.
23
Maintenance and operation
Attention !
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Attention !
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