24
UNO / DUO BOOSTER BASIC
Original Instructions
Symptom Reason Action
Working pressure fluctuating not solve the problem, the
(continued) water supply for the machine
is insufficient.
NB! Avoid long, thin hoses
(min. 3/4").
> High pressure hoses too long • Dismount high pressure
extension hoses and retry.
Extension hose max. 50 m.
NB! Avoid long extension
hoses with many couplings.
> Air in the system • Vent the system
(see section 3.7).
> Water inlet filter clogged up • Clean filter (see sect. 6.2).
No working pressure > Nozzle clogged up • Clean nozzle (see sect. 6.3).
> No inlet water • Check that the shut off cock
of the water inlet is open.
Check that the water supply
meets the requirements
(see section 1.2).
> High pressure cock of outlet • Close all high pressure
point open. cocks not in use.
Machine starts and > Leaky hose/ • Repair leak.
stops pipeline/spray handle
Machine starts > Oil shortage in pump • Refill with oil.
Should other malfunctions occur than those mentioned above, please contact your nearest Nilfisk-
ALTO service organisation.
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