Cleaning Machines KF75B, Manual

tends to round or to deteriorate the sharp edge of the

strip, thus reducing drying efficiently. This is why the

squeegee strips must be replaced.

To replace the worn straps, follow the instructions in

the relative section. Turn the straps around to wear

down the other sharp corners or to install new ones.

8.4 ACCESSORIES

Remove and clean the brushes or the scraper disks.

 To avoid damaging the floor and the machine, carefully

check if foreign matter, such as metallic parts, screws,

chips, cords or similar items, has become jammed.

Check that the brushes are flat as they work on the

surface (check for any irregular wear on the brushes

or on the abrasive disks). If necessary, adjust the slant

of the action on the floor.

Use  only  the  accessories  recommended  by  the

manufacturer: other products may reduce operating

safety.

8.5 DETERGENT SOLUTION FILTER

Make sure that the detergent solution tank is empty.

Check and clean the solution filter located in the lower

rear part of the machine. Clean with running water if

necessary and check that the detergent solution is

being delivered on the brushes.

Fully tighten the filter to prevent leaks during operation.

8.6 MACHINE BODY

Use a sponge or a soft cloth to clean the exterior of the

machine and, if necessary, a soft brush to eliminate

tough dirt. The machine’s shockproof surface is rough

to make it harder to see scratches caused during use.

However, this does not make it easier to remove tough

stains on the surface. Steam machines can be used

but it’s prohibited to use hoses with running water or

a high-pressure cleaner.

8.7 BATTERIES

8.7.1 PB-ACID

Carry out maintenance operations in accordance with

the manufacturer’s instructions and with all the other

instructions provided in this manual.

Exposing the element plates (not completely immersed

in the acid solution) will lead to rapid oxidation and

irreparably reduce the element’s operating capacities.

An overflowing acid solution may corrode the machine.

Use battery chargers recommended by the manufacturer

and, in any case, those that are suitable for the type of

battery to be charged.

Always charge batteries in well-ventilated rooms: there

is an explosion risk!

The use of gel or maintenance-free batteries is highly

recommended.

8.7.2 GEL

Carry out maintenance operations in accordance with

the manufacturer’s instructions and with all the other

instructions provided in this manual.

Use only those battery chargers recommended by the

manufacturer.

8.8 FUSES AND THERMAL BREAKERS

The machine is equipped with electric protection devices

on the main operating components to avoid costly

malfunctions. There are three manual reset thermal

breakers that trip when an overload occurs on the brush

motor.

When one of these breakers trips automatically, the

disabled function can be reactivated by fully depressing

the breaker that tripped.

When the thermal breakers trip, especially when the

machine is used during the first few weeks, it might not

be caused by actual machine malfunctions. However,

a specialised technician should check the device if the

relative breaker continues to trip.

8.9 PERIODIC MAINTENANCE

For all the operations described herein, refer to the

instructions and detailed warnings in the relative sections.

8.9.1 DAILY OPERATIONS

Disassemble and check the brushes or the scraper

disks (with the abrasive disks mounted).

Check that there are no foreign bodies that may impede

the movement or efficiency of all cleaning parts.

Check the squeegee: clean the blades and check their

condition/wear.

If Pb-Acid batteries are used, carefully carry out the

operations described by the battery manufacturer.

Charge the batteries.

8.9.2 WEEKLY OPERATIONS

Check and, if necessary, replace or adjust the height

of the splash guard.

Carefully check the profile of the squeegee blades and

replace them, if necessary.

Check that the suction hoses and conduits are not

clogged.

Check that the brushes are flat as they work on the

surface (check for any irregular wear on the brushes

or on the abrasive disks). If necessary, adjust the slant

of the action on the floor.

Thoroughly clean the solution and recovery tanks.

For other models with the Pb-Acid battery: check the

level of the electrolyte in all elements and, if necessary,

top  up  with  distilled  water.  Refer  to  the  battery

manufacturer’s detailed instructions.

8.9.3 OPERATIONS AT EXTENDED INTERVALS

Even though the machine was built with great precision

and conforms to the most severe quality tests, the

electrical  and  mechanical  parts  will  inevitably  be

subjected to wear and aging after extended periods of

use.

For safe and problem-free operation, your machine

should be carefully checked every year by our authorised

technical service centre (or by a specialist in the sector

familiar with all the pertinent safety regulations contained

in this manual).

This type of work may have to be carried out more

frequently if the machine operates in particular/difficult

situations  and/or  if  required  maintenance  was  not

performed.

8.10 RECOMMENDED SPARE PARTS

You’ll always be able to use your machine as efficiently

as possible by maintaining a stock of the most common

consumable materials and by scheduling routine and

extraordinary maintenance. Contact your dealer for a

list of these spare parts.

9. OPERATING CHECKS

The main electrical components and the function control

card are located under the front panel of the machine.

This card is equipped with a self-diagnostic system that

uses a red LED to indicate correct operation or

malfunctions. The LED remains illuminated to indicate

that the card is operating correctly, while a sequence

of flashes indicates a different error message as per

the following list (see the end of paragraph).

These indications make it easier to understand the

underlying causes of some problems based on specific

type of inconvenience. For the type of corrective action

to take please refer to the specific sections described

below.

9.1 THE MACHINE DOESN’T WORK

 The key isn’t inserted or correctly turned.

 Insert and turn the key to position “1”.

 The battery connector is disconnected or poorly 

attached to the main wiring connector.

 Firmly connect the two connectors.

 The emergency/work stoppage button is pressed.

 Disengage the emergency/work stoppage button.

 The machine is charging.

 Complete the charging operation.

 The batteries are dead (sequence of 3 red LED 

flashes).

 Charge the batteries.

 No operator in the driver’s seat.

 Sit in the driver’s seat.

 The main fuse is burned.

 Replace it.

 The control card has overheated (sequence of 7 

red LED flashes)

 Check the operating situations that may have caused

the malfunction (high slope, etc.). Wait 30 minutes

and try to avoid the same incorrect operations. If 

the problem persists, contact the authorised service

centre.

9.2 THE MACHINE DOESN’T MOVE FORWARD

 The direction selection lever is in the neutral position.

 Select a running direction.

 The advancement pedal is not pressed.

 Press the pedal.

 The floor slope is too steep.

 Manually push the machine to the new level.

 Machine don’t go into reverse

 Lift squeegee

 The advancement pedal microswitch is broken.

 Replace it.

 The batteries are dead.

 Charge the batteries.

 The accelerator pedal was pressed when the machine

was turned on (sequence of 5 red LED flashes).

 Release the accelerator pedal, turn off and restart 

the machine.

 The accelerator pedal potentiometer is malfunctioning

(sequence of 6 red LED flashes).

 Replace the potentiometer.

 The drive motor(s) was (were) not stopped when 

the machine was turned on (sequence of 1 or 2 red

LED flashes).

 Place the machine on a flat surface, turn it on and 

off again with the key.

9.3 THE BRUSHES DON’T ROTATE

 The brush motor switch is not selected.

 Press the button to activate the brushes.

 The machine is not moving forward and the control

tripped to avoid damaging the floor.

 Press the advancement pedal.

 The brush motor thermal breaker tripped; the motor

overheated.

 Troubleshoot the cause (cords or similar items that

impede movement, surface too rough, etc.) and 

press the reset breaker (the first from the top).

 The transmission belt is broken.

 Replace it.

 The motor relay or the brush motor is broken.

 Replace it.

9.4 NOT ENOUGH OR TOO MUCH DETERGENT

 The detergent solution tank is empty.

 Fill the detergent solution tank after having emptied

the recovery tank.

 The brushes or the machine has stopped.

 Activate the brushes and press the accelerator.

 The flow adjustment lever is closed or almost closed.

 Adjust/increase the detergent solution outlet flow 

as required.

 The detergent solution filter is clogged.

 Clean the filter.

 The detergent feed conduit is clogged in some point.

 Clean out the conduit by removing the dirt.

 The flow opening solenoid valve is burned.

 Replace it.

9.5 NO SUCTION

 The suction hose is not connected to the squeegee.

 Connect it correctly.

 The suction hose, the squeegee conduit or the 

inspection compartment is clogged.

 Clean out and remove any obstructions from the 

conduits.

 The suction motor is turned off.

 Activate it.

 The recovery tank is full.

 Empty it.

 The suction motor is not receiving electric power 

or is burned.

 Check the connections and, for the latter case, 

replace the motor.

9.6 INSUFFICIENT SUCTION

 The recovery tank cover was not correctly tightened.

 Tighten it correctly.

 The recovery tank drain hose plug is not perfectly 

closed.

 Close it correctly.

 The suction hose, the squeegee conduit or the 

inspection compartment is clogged.

 Clean out and remove any obstructions from the 

conduits.

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