COMAC CS90 Series Use and Maintenance Manual

Brand: COMAC

Model: CS90 Series

Category: Floor Machine

Type: Use and Maintenance Manual

This manual is also suitable for

MANUAL USE AND MAINTENANCE

CS80 – CS90

ED. 11-2009 EN

Doc. 10009923

Ver. AA

The contained descriptions in the present publication are not binding. The company

therefore reserves itself the right to bring in whatever moment possible organs changes,

details or supplies of accessories, that it holds convenient for an improvement, or for any

demand of constructive or commercial character.

The partial reproduction of the texts and diagrammes contained in the present catalog, is

forbidden by law.

The company reserves itself the right to bring changes of technical character and/or of

endowment. The images are meant of pure reference and not binding in terms of design

and endowment.

Symbols used in the manual

Symbol of the book open with letter i

It points out that this document is a manual of instructions.

Symbol of the open book

It points out to the operator to read the manual of use before using

the machine.

Symbol of warning

Read attentively the sections preceded by this symbol for the safety

of the operator and the machine

CONTENTS

ON CONSIGNMENT OF THE MACHINE ....................................................................................................................4

INTRODUCTORY COMMENT.....................................................................................................................................4

SERIAL NUMBER PLATE...........................................................................................................................................4

TECHNICAL DESCRIPTION .......................................................................................................................................5

SYMBOLS USED ON THE MACHINE ........................................................................................................................6

GENERAL SAFETY REGULATIONS..........................................................................................................................7

MACHINE PREPARATION..........................................................................................................................................8

1. HANDLING THE MACHINE....................................................................................................................................................8

2. HOW TO UNPACK THE MACHINE........................................................................................................................................8

3. EARTH CONNECTION...........................................................................................................................................................8

4. ASSEMBLING AND CONNECTING THE BATTERIES (battery-operated version only) ........................................................9

5. CONNECTING THE BATTERY CHARGER...........................................................................................................................9

6. BATTERY CHARGE LEVEL INDICATOR..............................................................................................................................9

7. RECHARGING THE BATTERIES.........................................................................................................................................10

8. MACHINE PREPARATION, VERSIONS 80D – 90D............................................................................................................10

INITIAL START-UP AND USE OF THE MACHINE...................................................................................................11

WORKING POSITION..............................................................................................................................................................11

INSTRUMENT PANEL..............................................................................................................................................................11

INSTRUMENT PANEL, VERSIONS 80D – 90D.......................................................................................................................11

INITIAL START-UP AND USE OF THE MACHINE...................................................................................................12

DIESEL MOTOR ACCELERATOR...........................................................................................................................................12

DIESEL MOTOR BATTERY CUT-OUT....................................................................................................................................12

BRUSH ACTIVATION LEVERS................................................................................................................................................12

BRAKE POSITION....................................................................................................................................................................12

ACCELERATOR PEDAL POSITION........................................................................................................................................12

WORK.........................................................................................................................................................................13

MACHINE START-UP, VERSIONS 80B-90B...........................................................................................................................13

INITIAL START-UP AND USE OF THE MACHINE, VERSIONS 80D – 90D............................................................................13

MACHINE DIRECTION.............................................................................................................................................................13

SUCTION ACTIVATION...........................................................................................................................................................14

USING THE SERVICE OR PARKING BRAKE.........................................................................................................................14

EMPTYING THE DEBRIS HOPPER.........................................................................................................................................15

AT THE END OF THE WORK ..................................................................................................................................................15

MAINTENANCE .........................................................................................................................................................16

WARNINGS..............................................................................................................................................................................16

CLEANING THE FILTER..........................................................................................................................................................16

ADJUSTING THE SIDE BRUSH...............................................................................................................................................16

REPLACING THE SIDE BRUSH..............................................................................................................................................16

MAINTENANCE .........................................................................................................................................................17

ADJUSTING THE PRESSURE OF THE CENTRAL BRUSH ...................................................................................................17

REPLACING THE CENTRAL BRUSH......................................................................................................................................17

REPLACING THE HATCH FLAP RUBBER..............................................................................................................................17

MAINTENANCE OF THE HYDRAULIC DRIVE........................................................................................................................17

THE CENTRAL BRUSH DOES NOT CLEAN WELL................................................................................................................18

THE MACHINE RAISES DUST WHILE CLEANING.................................................................................................................18

EXCESSIVE OR IRREGULAR NOISE FROM THE CENTRAL BRUSH ..................................................................................18

REPLACING THE OIL FILTER.................................................................................................................................................18

DISPOSAL..................................................................................................................................................................19

CONNECTING THE BATTERIESE............................................................................................................................20

CHOOSING AND USING THE BRUSHES................................................................................................................21

EC DECLARATION OF CONFORMITY ....................................................................................................................22

On consignment of the machine

When the machine is delivered to the customer, an

immediate check must be performed to ensure all

the material mentioned in the shipping documents

has been received, and also to check the machine

has not been damaged during transportation. If this

is the case, the carrier must ascertain the extent of

the damage at once, informing our customer service

office. It is only by prompt action of this type that the

missing material can be obtained, and any compensation

for damage successfully claimed.

Introductory comment

Even the best machines will only work well if used

correctly and kept in good working order. We

therefore suggest you read this instruction booklet

carefully and read it again whenever difficulties arise

while using the machine. If necessary, remember

that our assistance service (organised in collaboration

with our dealers) is always available for advice or direct

intervention.

Serial number plate

TECHNICAL DESCRIPTION

CS 80 B CS 80 D CS 90 B CS 90 D

Working width

mm 1120 1120 1220 1220

Work capacity

/h 8960 8960 9760 9760

Maximum gradient

% 10 10 10 10

Central brush measurements

mm 320x800 320x800 320x900 320x900

Debris hopper volume

l 190 190 220 220

Dumping height

mm 1400 1400 1400 1400

Suction

/h 160 160 160 160

Filtering surface

7 7 8 8

Type of advance

Aut. Aut. Aut. Aut.

Forward speed

km/h 0÷8 0÷8 0÷8 0÷8

Machine length

mm 2020 2020 2020 2020

Machine height

mm 1430 1430 1430 1430

Machine width

mm 1130 1130 1230 1230

Battery voltage and capacity

V/Ah 36/320 - 36/480 -

Electric motor voltage and power

V / W 36/4000 - 36/4000 -

Perkins diesel motor 402C-05 (CS80) / 403D-07 (CS90)

HP - 14 - 20

Filter shaker motor

V/W 12/110 12/110 12/110 12/110

Battery weight

kg 340 - 500 -

Machine weight (empty and without batteries)

kg 705 740 715 770

Noise level (in compliance with IEC 704/1)

dB (A)

Hand vibration level

m/s

Body vibration level

m/s

SYMBOLS USED ON THE MACHINE

Filter shaker symbol

Used to indicate the filter shaker switch

O/I symbol

Indicates when the machine is

switched on/off

Suction turbine symbol

Used to indicate the activation of the

suction turbine

Suction turbine symbol

Used to indicate when the suction

turbine is switched off

Horn symbol

Indicates the buzzer

Front headlights switch symbol

Parking brake symbol

Partial hour-counter zero-setting

symbol

Side brush symbol

Used to indicate the lever for raising

the side brush

Side brush symbol

Used to indicate the lever for lowering

the side brush

Debris hopper symbol

Used to indicate the lever for lowering

the debris hopper

Debris hopper symbol

Used to indicate the lever for raising

the debris hopper

Central brush symbol

Used to indicate the lever for raising

the central brush

Central brush symbol

Used to indicate the lever for lowering

the central brush

Hatch symbol

Used to indicate the lever that opens

the hatch of the debris hopper

Hatch symbol

Used to indicate the lever that closes

the hatch of the debris hopper

Lifting hook connection symbol

Hydraulic oil level symbol

Battery cut-out switch symbol

Accelerator symbol

GENERAL SAFETY REGULATIONS

The regulations below must be carefully followed in order to avoid harm to the operator and damage to the machine.

ρ Read the labels on the machine carefully. Do not cover them for any reason and replace them immediately if they

become damaged.

ρ The machine must be used exclusively by authorised, trained personnel.

ρ During the working of the machine, pay attention to other people and especially to children.

ρ The machine is not suitable for cleaning carpets.

ρ The socket for the battery charger cable must have a prescribed earth connection.

ρ Avoid damaging the battery charger cable by crushing or bending it, or applying stress.

ρ If you notice any damage to the battery charger cable, contact a COMAC technical assistance centre immediately.

ρ Do not place any liquid containers on the machine.

ρ The storage temperature must be between -25°C and +55°C; do not store outdoors in damp conditions.

ρ Conditions of use: room temperature between 0°C and 40°C with relative humidity between 30 and 95%.

ρ Do not use the machine in an explosive atmosphere.

ρ Do not use the machine as a means of transport.

ρ Avoid working with the brushes when the machine is standing still, so as not to damage the floor.

ρ Do not use the machine in inflammable areas, or wherever there is a risk of explosion.

ρ Do not use the device to collect dangerous or toxic powders.

ρ In the event of a fire, use a powder extinguisher. Do not use water.

ρ Do not knock against shelving or scaffolding, where there is a danger of falling objects.

ρ Do not use the machine on surfaces with an inclination greater than the one shown on the plate.

ρ If the machine does not work properly, check this is not caused by failure to carry out routine maintenance. Otherwise,

request the intervention of the COMAC technical assistance centre.

ρ If you need to replace any components, request the ORIGINAL spare parts from a COMAC dealer and/or Authorised Retailer.

ρ Before carrying out any maintenance work, switch off the machine and disconnect the battery connector.

ρ Do not remove any protection devices which require the use of tools in order to be removed.

ρ Do not wash the machine with direct water jets or with pressurised water, nor with corrosive substances.

ρ Have the machine checked by a COMAC technical assistance centre at the time intervals indicated in the maintenance schedule.

ρ Before using the machine, check that all the hatches and covers are positioned as shown in this Use and Maintenance Manual.

ρ When disposing of consumption materials, observe the laws and regulations in force.

ρ When your COMAC machine has reached the end of its long working life, dispose of the materials it contains

(especially oils and electronic components) in an appropriate manner, and bearing in mind that the machine itself was

constructed using 100% recyclable materials.

ρ Only use the brushes supplied with the device, or those specified in the Use and Maintenance Manual (page 21). The

use of other brushes could compromise safety levels.

ρ The device must be disconnected from the power supply before removing the battery.

ρ The battery must be removed from the device before this is disposed of.

ρ The battery and battery charger must be disposed of in a safe manner, scrupulously respecting the laws in force.

ρ The machine is not suitable for use by children or people with reduced physical, mental and sensorial capacities, or

people lacking experience and knowledge, unless supervised and instructed in the use of the machine by a person

responsible for their safety.

ρ Children must be supervised to ensure they do not play with the device.

MACHINE PREPARATION

1. HANDLING THE MACHINE

The machine is delivered packed, on a pallet. A forklift or other lifting means (hoist)

of a suitable capacity should be used for handling purposes.

If the machine is delivered without any packaging, it should be handled with lifting

means of a suitable capacity (hoist, bridge crane), using the special lifting plates

supplied with it; fix them to the hooks on the machine itself.

The use of any other lifting system will invalidate the warranty in relation to any

damage that may result.

ATTENTION: only lift when the debris container is empty.

2. HOW TO UNPACK THE MACHINE

To remove the packaging, proceed as follows:

1. cut the straps

2. remove the metal points at the base of the packaging

3. remove the cardboard

Dimensions of the packaging (in cm) and weight of the packed machine without batteries:

CS 80B 203x128x162 780kg

CS 80D 203x128x162 820kg

CS 90B 238x152x164 790kg

CS 90D 238x152x164 850kg

3. EARTH CONNECTION

Use a hammer to remove the wooden wedges blocking the front wheels.

Use a hammer to remove the front crossbar of the pallet, to create a ramp.

Open the motor cover and bring the hydrostatic drive valve lever (1) to the vertical

(idle) position as otherwise the machine cannot be moved. (On the battery-operated

version the lever is in the lower part of the pump.)

Disengage the parking brake.

Close the cover and push the machine forwards so it slides down the ramp.

Bring the hydrostatic drive valve lever back to the horizontal (running) position

(clockwise or anticlockwise) so the machine can operate.

MACHINE PREPARATION

4. ASSEMBLING AND CONNECTING THE BATTERIES (battery-operated

ersion only)

For a good level of autonomy, you are advised to assemble 2 battery cases of the

type 18V 320Ah(CS80) / 18V 480Ah(CS90). Before assembling, check the batteries

are charged.

ssembly instructions:

1. remove the O/I key from the block

2. turn the handle (1) anticlockwise to release the rear cover (2)

3. fully open the rear cover of the machine (2) by means of the handle

4. you are advised to use some form of lifting means. Position the batteries in the

appropriate compartment, respecting the poles shown in the attached figure

5. connect the jumper cables and the positive/negative connections, as per the diagram

6. lower the rear cover (2) by means of the handle

7. Turn the handle (1) clockwise to block the rear cover (2)

For the connection, see the diagram on page 20.

5. CONNECTING THE BATTERY CHARGER

On the operator's lower left side there is the female connector (1), into which the male

connector fixed to the battery charger cables must be inserted. The male coupling

connector is consigned in the bag that also contains this instruction booklet. When

assembling it on the battery charger cables, pay attention to the polarity.

ATTENTION: this process must be carried out by qualified

personnel. The incorrect or imperfect connection of the cables to

the connector can seriously harm people and damage objects.

6. BATTERY CHARGE LEVEL INDICATOR

The battery indicator is located on the machine's instrument panel. Every bar

illuminated on the monitor indicates the battery charge level.

When the battery is run down and the monitor shows only one bar, you must

recharge it.

NB: if the buzzer intervenes as well, there is a risk of damage to the battery.

ATTENTION: For the daily recharging of the batteries, you must

fully respect the indications provided by the manufacturer or

retailer. All installation and maintenance operations must be

carried out by specialised personnel.

ATTENTION: danger of exhalation of gas and leakage of

corrosive liquids

ATTENTION: danger of fire: do not go near with naked flames.

MACHINE PREPARATION

7. RECHARGING THE BATTERIES

To avoid any permanent damage to the batteries, it is essential to avoid their total

run-down.

After connecting the machine batteries to the battery charger, recharge them

completely. The battery charger usually provides the necessary charge before

automatically switching off. You are advised to use a 36V – 60Ah(CS80) / 36V -

70Ah(CS90) battery charger.

ATTENTION: for the characteristics of the battery compartment,

refer to the last page.

ATTENTION: never leave the batteries completely discharged,

even if the machine is not being used While recharging, check the

level of the electrolyte and, if necessary, top up with distilled water.

8. MACHINE PREPARATION, VERSIONS 80D – 90D

Fill the tank with light oil with a low sulphur content.

The maximum capacity is 18 litres (including a 3-litre reserve).

Check the level of oil in the hydraulic circuit (via the bulb indicator lights). The

difference between the two

extremes is about 1.5 litres. Check the motor oil level.

Check the position of the battery cut-out: bring it to the working (horizontal) position.

Observe the warnings given in the Use and Maintenance booklet of the motor for

start-up operations (motor start-up).

INITIAL START-UP AND USE OF THE MACHINE

WORKING POSITION

The operator sits on the machine in order to drive it, using the manual commands on

the instrument panel to his side, along with the levers and pedals. The position of

the seat can be adjusted using the lever underneath.

ATTENTION: the machine is fitted with a micro-switch under the

seat to indicate the presence of an operator on board; this switch

stops the machine moving if the operator is not correctly seated.

INSTRUMENT PANEL

The instrument panel can be found under the driving wheel; it houses the machine

switches. From the right, they are:

1. the start-up key

2. the safety button for lowering the hopper

3. the buzzer

4. the digital hour-counter

5. the headlight switch

6. the filter shaker switch

It also houses the machine indicator lights (version 80B-90B). From the left, they are:

1. key inserted (green)

2. clogged debris filter (red)

3. brake oil level (red)

4. direction indicators (green)

5. parking brake (red)

6. position brake (green)

7. position headlights (green)

8. high beam lights (blue)

9. dipped lights (green)

10. hydraulic oil level (red)

11. hydraulic oil filter (red)

12. hydraulic oil temperature (red)

13. hopper open (green)

14. machine ammetric consumption indicator

15. battery level check indicator

INSTRUMENT PANEL, VERSIONS 80D – 90D

1. fuel reserve (yellow)

2. clogged debris (red)

3. brake indicator light (red)

4. insufficient alternator charge (red)

5. Brake oil level (red)

6. fuel level indicator

7. total and partial hour-counter

8. hopper hatch closed (red)

9. Hopper hatch open (green)

10. High hydraulic oil temperature (red)

11. pre-heating glowplug indicator light (yellow)

12. rev counter

13. Hydraulic oil level (red)

14. Clogged hydraulic oil filter (red)

15. Clogged motor air filter (red)

16. low motor oil pressure (red)

17. cooling circuit temperature (red)

INITIAL START-UP AND USE OF THE MACHINE

DIESEL MOTOR ACCELERATOR

1. accelerator lever

DIESEL MOTOR BATTERY CUT-OUT

1. battery cut-out (1)

2. hydraulic oil level indicator light (battery and diesel versions) (2)

BRUSH ACTIVATION LEVERS

1. central brush lever (1)

2. Side brush lever (2)

BRAKE POSITION

1. Parking brake lever (2)

2. Service brake pedal (1)

ACCELERATOR PEDAL POSITION

1. accelerator pedal

WORK

MACHINE START-UP, VERSIONS 80B-90B

Comac sweeping machines should only be used by trained, authorised operators,

and only when the machine itself is in perfect working order. Faulty sweeping

machines must be taken out of service immediately.

Before carrying out any type of work:

1. check the parking brake is disengaged

2. turn the key to position I (clockwise)

3. check the battery charge is sufficient for carrying out the planned work

ATTENTION: To avoid any permanent damage to the batteries,

it is essential to avoid their total run-down. When the run-down

buzzer sounds, the machine must be switched off (maintaining

just the forwards function so it can reach the recharge point).

4. Open the hatch of the debris hopper (green indicator light ON).

5. On the side instrument panel, activate the lever to lower the central brush,

and the lever for the side brush (only for cleaning near pavements, walls, etc.).

6. Activate the suction (left-hand lever).

7. Press the pedal command to move, and adjust the machine speed according

to the quantity of dust and dirt on the floor.

8. If you need to transfer the machine to another area, you are advised not to

use the brushes (raise them).

ATTENTION: the machine is fitted with a micro-switch under the

seat to indicate the presence of an operator on board; this switch

stops the machine moving if the operator is not correctly seated.

INITIAL START-UP AND USE OF THE MACHINE, VERSIONS 80D – 90D

Move the accelerator lever until it is in the minimum position.

Start the motor by means of the start-up key, bringing it to the heating position (I).

Wait about 6 seconds, until the glowplug indicator light (11) switches off.

When the indicator light is OFF, turn the key to the start position.

When the motor switches on, release the key.

After an initial heating phase (see “after motor start-up“), bring the motor to a speed

of about 2000rpm, using the accelerator lever.

The machine is now ready to work.

Observe the warnings given in the Use and Maintenance booklet of the motor

for start-up operations (motor start-up).

MACHINE DIRECTION

The choice of direction when using the machine does not involve any switches or

levers, but is implemented via the pedal command: pressing the right-hand pedal the

machine moves forwards, while the left-hand pedal enables reverse movements.

WORK

SUCTION ACTIVATION

The machine works in normal conditions with the hatch open, as the dirt is picked up

by the brush and sucked into the debris hopper (left-hand lever - 1).

Pressure on the hatch lever will illuminate the green indicator light ("hopper open")

on the instrument panel, so the dirt can be collected.

Turning the lever (1) anticlockwise, the air flow in the hopper is interrupted.

Press the filter shaker switch on the instrument panel to activate the filter shaker

motor and free the dirt captured by the filter itself.

To maintain effective suction via the filter shaker, clean the filter every 20-

30 minutes and always before emptying the debris hopper.

NB: do not activate the filter shaker when the suction is enabled.

ATTENTION: avoid prolonged operation of the filter shaker motor.

Turn off the suction by means of the lever (1) when you are about

to work on wet or damp surfaces, to avoid ruining the filter.

USING THE SERVICE OR PARKING BRAKE

Use the service brake whenever you want to slow down or stop the machine

movement.

Pull the parking brake when you want to park or stop on a sloping surface.

WORK

EMPTYING THE DEBRIS HOPPER

When the machine begins to leave behind clear traces of dirt, this means the hopper

is full and needs emptying.

ATTENTION: before emptying the debris hopper, close the

hatch by means of the lever on the side instrument panel, and

check there is nobody within the machine's working radius.

To raise the debris hopper, proceed as follows:

1. close the hatch by pushing the lever (1) upwards

2. push up the lever that raises the debris hopper (2) until the required height is reached

3. move next to a debris hopper

4. push the hatch lever (1) down, so the hatch opens to empty the hopper

ATTENTION: when the debris hopper is raised, move the

machine very slowly - maximum speed 1km/h.

Only empty the hopper when the machine is on an even surface.

Do not activate the filter shaker when the hopper is raised.

After emptying, pull the hatch lever down to close the hatch.

For safety reasons, the hopper lowering operation is only possible if the green

button (1) on the front instrument panel is pressed (with the right hand) at the same

time as the hopper lowering lever (2) is pushed down.

After bringing the hopper back to the working position, open the hatch again by

pushing the lever (3) upwards.

AT THE END OF THE WORK

1. Activate the filter shaker.

2. Empty the debris hopper.

3. Stop the machine.

4. Engage the parking brake.

5. Switch off the machine, brining the key to the OFF position.

MAINTENANCE

WARNINGS

The regular, periodic maintenance of the sweeping machine ensures better

performance levels and a longer working life.

ATTENTION: all adjustment and/or maintenance interventions

should be carried out with the machine switched off.

ATTENTION: disconnect the battery before carrying out any

cleaning or maintenance work on the machine.

CLEANING THE FILTER

After every 100 hours' operation, the filter should be carefully cleaned as follows:

1. switch off the machine

2. open the front cover by releasing the closing hook

3. release the side hooks to lift the protective panel and access the filter

4. disconnect the cable connector of the filter shaker motor, then take out the filter

5. carefully clean the filter, using a vacuum cleaner. Otherwise, shake the filter

manually (do not use liquids)

6. reassemble everything, carrying out the above-mentioned operations in the reverse

order. Pay special attention to the seal, replacing it immediately if it is damaged.

ATTENTION: these operations must be carried out using gloves

to protect your hands from contact with dangerous elements.

ADJUSTING THE SIDE BRUSH

Brush pressure can be adjusted via the screw behind the arm of the side brush:

1. loosen the locknut

2. turn the adjustment screw (1) anticlockwise until the front half of the brush is

pressed down

REPLACING THE SIDE BRUSH

1. Stop the side brush by means of the appropriate lever on the side instrument panel.

2. Switch off the machine, brining the key to the O position.

3. Loosen the four screws that fix the brush in place. Remove the brush, taking

care not to lose the washers.

4. Insert the new brush then reassemble the washers and screws.

MAINTENANCE

ADJUSTING THE PRESSURE OF THE CENTRAL BRUSH

To adjust the pressure of the central brush, you must open the right-hand hatch and

turn the knob (1).

With the machine still but the brush functioning, periodically check the brush leaves

a trace of 6-8cm on the floor.

REPLACING THE CENTRAL BRUSH

1. Switch off the motor, activating the lever to raise the brushes.

2. Switch off the machine, bringing the key to the O position.

3. Open the side hatch.

4. Release the connection (1) shown in the figure, and take out the brush support (2).

5. Remove the worn brush and insert the new one, checking it is facing in the

correct direction.

ATTENTION: the brushes have pointed bristles, so check they

are facing in the right direction.

REPLACING THE HATCH FLAP RUBBER

1. Loosen the fixing bolts (1) and remove the rubber-pressing blade (2).

2. Take out the worn rubber (3) and replace it with a new one.

3. Reassemble the blade and fixing screws.

MAINTENANCE OF THE HYDRAULIC DRIVE

Top up the hydrostatic drive tank (beneath the rear cover) with AGIP ARNICA 46

hydraulic oil (or equivalent) when the level falls below the minimum visible on the

transparent cap (MIN) on the wall beneath the operator's seat (the oil level must be

between the MIN and MAX).

The oil level should be checked when the machine is switched off and cold,

positioned on an even surface, and with the hopper lowered.

NB: when the red indicator light for the “hydraulic oil level” (on the instrument panel)

comes on, top the level up immediately (risk of damage to the components of the

hydraulic circuit).

ATTENTION: for all other maintenance work, you are advised

to contact our technical assistance centre (organised in

collaboration with our dealers), as these interventions require

specific technical skills and the use of the right equipment.

TROUBLESHOOTING

THE CENTRAL BRUSH DOES NOT CLEAN WELL

1. Check whether the central brush is worn. If necessary, have it replaced at the

COMAC SPA technical assistance centre.

2. Check whether the debris hopper is full. If necessary, empty it.

3. Check the brush turns. If necessary, contact the COMAC SPA technical

assistance centre.

4. Check the brush pressure (see the paragraph on page 16).

THE MACHINE RAISES DUST WHILE CLEANING

1. Check whether the debris hopper hatch is open. If necessary, activate the lever

on the side instrument panel.

2. Check the state of wear and tear of the flap rubber. If necessary, replace it.

3. Check whether the filter is clogged. If necessary, clean it thoroughly or replace it.

4. Check the central brush is correctly assembled.

EXCESSIVE OR IRREGULAR NOISE FROM THE CENTRAL BRUSH

If wires (or other items) collect around the brush, remove them.

REPLACING THE OIL FILTER

Change the oil filter roughly every 750 hours, or when the indicator light on the

instrument panel comes on. Proceed as follows:

1. wrap insulating tape around the cap of the oil tank, to shut off the vent

. switch off the machine, bringing the key to the O position

3. open the hatch on the left of the machine

. loosen the filter and replace it

5. close the hatch

ATTENTION: dispose of the filters and used oil in the correct manner.

DISPOSAL

Product subject to the directive WEEE 2002/96/EC

CONNECTING THE BATTERIESE

14V +

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COMAC CS90 Series Use and Maintenance Manual

Brand: COMAC

Model: CS90 Series

Category: Floor Machine

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