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7.0 Maintenance EN
7.1 Changing of oil
The oil should be changed after each 1000 hours’
use.
Remove the cover of the oil glass. Unscrew the
drain plug. Allow the oil to run out and clean the
drain plug of impurities. Screw in the plug and refi ll
the pump with fresh oil through the oil glass. Holds
approx. 1 l.
From Nilfi sk-ALTO the pump is fi lled with zincless
hydraulic oil - Nilfi sk-ALTO Pump Oil 100. When
refi lling and changing the oil this or an oil with the
following specifi cations should be used:
ISO no. 100
Viscosity index (VI) min. 130
Pour point below -30°C
Concerning oil for mist lubricating, see section. 9.0.
7.2 Sludge container
The used oil is caught in a sludge container (pos.
14), which should be emptied before it is com-
plete ly full. The oil must not be reused in the pump.
This applies also to the moisture trap for air fl ow
(pos. 8).
7.3 Water fi lter
To avoid debris entering the high pressure pump a
water fi lter is fi tted at the water inlet. This fi lter must
be taken apart and cleaned regularly. The inter-
vals between cleaning depend on the purity of the
water. The fi lter can be removed, when the quick
coupling has been unscrewed.
7.4 Couplings
To avoid leakages and damage to the quick
couplings on hoses, spray handle and spray lance
it is necessary to clean and lubricate the parts
regularly with a little oil or grease.
8.0 Safety EN
Your Nilfi sk-ALTO cold water cleaner is designed
and manufactured to comply with the very latest
labour regulations.
Nevertheless, the following instructions must be
strictly observed.
1. Always hold the spray handle and lance fi rmly
in both hands during operation at high pres-
sure.
2. Never direct the high pressure spray towards
people or electrical devices.
3. When not in use turn the safety locking lever to
position O.
4. Only use the hoses and nozzles ap proved by
Nilfi sk-ALTO.
5. Do not disconnect the high pressure hose until
the cleaner has cooled down and stopped.
6. Don’t attempt to touch nozzle nor water jet dur-
ing operation.
7. Never tie knots in or kink the high pressure
hose as it may be damaged and consequently
burst.
8. Do not leave your machine exposed to frost.
However if cleaner, hose or lance should be-
come frozen do not use until they have thawed.
9. The high pressure pump features a safety
valve, the adjustment of which SHOULD NOT
BE CHANGED.
10. The machine should only be used by people
who have been properly instructed.
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