Operation Manual

11Original Instructions
EN
SC UNO/DUO
Therefore, it is important to follow the laws concerning the
removal of polluting and dangerous materials when repla-
cing spare parts or disposing of high pressure washer.
It is recommended that you bring the rejected parts to wa-
ste disposal areas or recycling plants that are approved
for the destruction of these types of materials.
Troubleshooting
You have chosen the best quality and therefore deserve the best service. To avoid unnecessary dis ap point ments, you
should check the following before contacting the nearest Nilfi sk service organisation:
Symptom Reason Action
Machine/pump will not start > A fuse has blown
> Power/plug not connected
> Thermal switches in motor activated
(red lamp fl ashes)
> Thermal relay switched off (red lamp
fl ashes)
> Oil shortage in pump
• Change the fuse.
• Connect power/plug.
• Let the motor cool. Start the machine
and check that the working pressure
is not too high and that the mains
voltage corresponds to the specifi ca-
tions.
• Refi ll with oil.
Fuses blow > Installation does not correspond to
the ampere consumption of the ma-
chine
• Change to an installation correspon-
ding to the ampere consumption of
the machine at a minimum. Replace
the fuse.
Working pressure too low > Nozzle worn
> Wrong spray lance
> Reduction valve of spray lance not
adjusted to max. pressure.
> Nozzle partly clogged up
• Replace the nozzle.
• Replace the spray lance (see section
B4/B5).
• Turn reduction valve completely
counter-clockwise.
• Clean the nozzle (see section C.3).
Working pressure not steady > Water temperature too high
> Insuffi cient water supply
> High pressure hoses too long
> Air in the system
> Water inlet fi lter clogged up
• Lower the temperature of the inlet
water to max. temperature (see
Technical Specifi cations).
• Check water inlet fi lter. If that does
not solve the problem, the water
supply for the machine is insuffi cient.
NB! Avoid long, thin hoses (min.
3/4").
• Dismount high pressure extension
hoses and retry.
Extension hose max. 50 m.
NB! Avoid long extension hoses with
many couplings.
• Vent the system (see section A.7).
• Clean fi lter (see sect. D.2)
No working pressure > Nozzle clogged up
> No inlet water
> High pressure cock of outlet point
open.
• Clean nozzle (see sect. D.3)
• Check that the shut off cock of the
water inlet is open. Check that the
water supply meets the requirements
(see section A.4)
• Close all high pressure cocks not in
use.
Machine starts and stops > Leaky hose/ pipeline/spray handle • Repair leak.
Machine stops > Oil shortage in pump. Red lamp
fl ashes
• Top up with oil