Bedienungsanleitung Nilfisk-ALTO DELTABOOSTER (Seite 1 von 1) (Englisch)

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EN 730 90 21 d

3.10 Trouble-shooting and possible correction

Problem Possible cause Correction

System will not start or stops in

mid-operation

(no indication of fault)

System does not start or stops in

mid-operation with the following

fault indication:

C3K

Water tank

Pipeline / internal hoses

Sensors

One or more pumps will not stop

after end of operation

Pump restarts at short intervals

Working pressure too low

No working pressure

Irregular working pressure

(machine vibrates)

Water volume at outlet point too

small

) Mains power supply cut off

) Fuses have blown

) Control voltage fuses in DELTA-

BOOSTER

have blown

Any of the below faults ia fatal and

should be corrected

Motor guard on motor 2 cut out:

) No phase

) Pump - motor blocked

) Short-circuit in motor

Thermal cut-out sensor in motor 3 cut out

) Air intake obstructed

Water level in water tank too low

Temperature in water tank too high

(>80°C)

Temperature in water tank too low (<2°C)

Leakage: external or internal

Combination of sensor values illegal.

I.e. if the high pressure switch is ON and

the low pressure switch is OFF.

High-pressure cock at outlet point does

not close

Flow sensor return defective

The system cannot keep up pressure

The high-pressure cock at outlet point

not completely closed

Double spray lance used at outlet point

without injector

Excessive water consumption

High-pressure cock at one outlet point is

left open

Air in pump

Inlet water too hot

Blockage of ﬁ lter for inlet water

Nozzle blocked

Connect mains power supply

Check that fuses correspond to power con-

sumption (model plate). Renew fuses

Call customer engineer

When fault has been corrected restart

system - check that the fault indication has

disap pea red

*) Call customer engineer

(C3K pump no. 2 can be withdrawn on the

steering - see section 3.5 - upon which the

operation can be resumed)

*) Allow the motor to cool

Check the air intake and clean, if necessary

Check that the shut-off’s on the water inlets

are open and clean the inlet ﬁ lters, if ne-

ce s sa ry. Check that the water supply meets

the requirements stated in sect. 1.5

Allow the water to cool, empty the wa-

tertank, if ne ce s sa ry. Check that the cold

water connection is open and, if not, that

the temp. on the hot connection does not

exceed 75°C

Empty the water tank, and make sure that

the temperature of the water inlets are

above 2°C.

In case of external leakage: disengage

any open spray handles, if relevant - repair

leakage.

In case of internal leakage: repair leakage

Call customer engineer

Check that all high-pressure cocks at outlet

points have been closed

Call customer engineer

Check that all high-pressure cocks at outlet

points have been closed

Check that all high-pressure cocks at outlet

points have been closed.

Shift to single spray lance at this outlet

point.

Check whether the water consumption of

the spray lances used exceeds the capacity

of the system - shift to other spray lances, if

ne ce s sa ry

Shut off the high-pressure cock at outlet

points not in use

Vent the system, cf. sect. 2.5.3

Allow water to cool and check that inlet

temperature does not exceed 80°C

Clean the ﬁ lter, cf. sect. 3.9.2

Clean the nozzle

*) In both cases the plant will stop and the related control lamp will ﬂ ash. When restarting the plant, the pump will

AUTOMATICALLY cut out, and the operation can be resumed - the control lamp will now be constantly alight.

If other faults occur than those enlisted, please contact your nearest Nilﬁ sk-ALTO service centre.

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