COMAC SIMPLA 50B-BT Use and Maintenance Manual

Brand: COMAC

Model: SIMPLA 50B-BT

Category: Scrubber

Type: Use and Maintenance Manual

This manual is also suitable for

COMAC SIMPLA 50B-BT is a versatile cleaning machine designed for both indoor and outdoor use. With its compact size and maneuverability, it's ideal for cleaning small to medium-sized areas, such as offices, shops, schools, and hospitals.

The SIMPLA 50B-BT features a powerful suction system that effectively removes dirt, debris, and liquids from hard floors and carpets. Its adjustable brush speed and water flow rate allow you to customize the cleaning process to suit different surfaces and levels of dirt.

This machine is also equipped with an ergonomic handle and intuitive controls, making it easy to operate. The durable construction and low maintenance requirements ensure long-lasting performance and reliability.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 1 of 16

READ THE USE AND MAINTENANCE MANUAL

Electric System Testing

1. Disconnect the battery connector.

2. Check the functioning of the electric system switches,

motors, solenoid valve, contactors, power fuses and

thermal trip units.

3. Check the condition and tightening of all power cables:

contactors, fuses, motors, etc.

4. Check the functioning and condition of the potentiometer

and the base confirmation microswitches (water and brush

rotation) and working operation, and those for automatic

squeegee rise and descent (AUTOMATIC VERSION only).

5. Check the handlebars lever is centrally positioned and that

the threaded rod does not touch the measuring device

card located beneath the instrument panel (if it does touch,

adjust it within the plastic joints.

6. Check the condition and connections of the battery poles on

the battery connector.

7. Reconnect the battery connector.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 2 of 16

8. Check the functioning of the chopper.

9. If necessary, calibrate the chopper card as

follows:

• raise the machine (free traction wheels);

• unscrew the rear instrument panel to access

the chopper;

• set the continuous voltage measurement

tester with a full scale of 50V;

• insert the test prods on the fastons marked

with M+ and M- on the chopper card;

• switch on via the main key;

• select the forward movement until activating

the movement microswitch (so you can hear

the click of the relays) slightly rotating the

potentiometer on the handlebars with respect

to zero;

• in that moment, the voltage measured by the

test prod must be 3-5V. If necessary, adjust

the VMIN trimmer so the output voltage is at

the required value;

• at this point, press the operation levers fully

down until you reach maximum speed. You

should see a value of 24V (battery

maximum); if this is not the case, adjust the

VMAX trimmer to obtain the required output

voltage;

• acceleration adjustment: rotate the ACC

trimmer clockwise. This adjustment brings the

voltage to the maximum required value (24V)

in about 7-8 seconds;

• check the reverse gear is functioning;

• check the motor braking (releasing the

accelerator, the machine must stop within

about 1 metre)

Adjusting the battery charger

1. Check the set-up of the battery charger corresponds to the

type of battery actually installed on the machine.

2. To adjust the battery charger, proceed as follows:

• use a screwdriver to remove the small plastic cap;

• set the dip switches inside, on the basis of the table

below;

• close the plastic cap

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 3 of 16

The dip switches are set as follows (DP1 and DP2 are the SW1

and DP3 and DP4 are SW2):

DP1 DP2 SET-UP

OFF OFF EXIDE SONNENSCHEIN gel

OFF ON General GEL or AGM batteries

ON OFF Wet-cell batteries

ON ON TROJAN gel

DP3:

ON for all the batteries (not used)

DP4:

OFF for all the batteries (not used)

Carefully read the battery charger operating manual

Battery charger alarm signals:

Flashing YELLOW LED:

• WRONG BATTERY

• BATTERY NOT CONNECTED

• OUTPUT SHORT-CIRCUIT

Flashing RED LED:

• SAFETY TIMER EXCEEDED

• INTERNAL SHORT-CIRCUIT

Initial battery charger test:

GREEN LED with 2 flashes: battery charger with set-up for GEL or AGM batteries

RED LED with 2 flashes: battery charger with set-up for wet-cell batteries

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 4 of 16

Check the functioning of the “service menu”. Remember that to access it, you must keep the

button pressed while starting up the machine (when you turn the key).

Keeping the button pressed for

a few seconds will zero-set the

total hour-counter (only in the

first hour of operation).

Pressing the button

Keeping the button pressed

for a few seconds will zero-

set partial hour-counter 1.

Pressing the button

Pressing

the button

Keeping the button pressed for

a few seconds will zero-set

partial hour-counter 2.

Pressing the button

Keeping the button pressed for

a few seconds will change the

battery technology setting.

Keeping the button pressed

for a few seconds will give

you access to the “service”

sub-menu: every time the

button is subsequently

pressed, the setting will

Pressing the button

Keeping the button pressed for a

few seconds will zero-set the

number of loads.

Pressing the button

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 5 of 16

Water System Testing

1. Check the solution filter just underneath the tank cap is

clean and functioning.

2. Check the cleanliness and seal of the solution filter (in the

rear part of the machine, at frame level).

3. Completely fill the solution tank with water.

4. Check the seal of the tubes, the solenoid valve, and the

water tap adjustment.

5. Check the solution pours onto the floor in a continuous

manner when the tap is open.

Adjusting the brakes

1. Fix the brake cable to the frame, tightening the sheath

completely down on the support.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 6 of 16

2. Adjust the pads on the wheels, so that when the pin is

inserted on the handbrake lever, the machine is blocked.

3. To adjust the pads, proceed as follows:

• loosen the M8 locknut

• Loosen or tighten the pad so that it is correctly adjusted

(make sure that with the machine working, batteries

installed, the pad does not touch the wheel).

• tighten the M8 locknut

Suction Testing

1. Check the filter – float is clean and functioning.

2. Check the air seal of the cap on the recovery tank.

3. Check the connections and seal of the suction tubes and the

squeegee tube.

4. Check the seal of the squeegee nozzle.

5. Check the seal of the drainage tube and cap.

6. Adjusting the suction microswitch (MANUAL MACHINE

VERSION):

• adjust the microswitch so that when the lever is turned, the

switch closes (thereby activating the suction), leaving a gap

of about 0.5mm between the roller and the main body

• after adjusting, check the microswitch is functioning

correctly

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 7 of 16

7. Adjusting the suction microswitch (AUTOMATIC MACHINE

VERSION):

• adjust the upper microswitch so that when the cam is

turned, the switch closes, leaving the squeegee 4-5cm

above the ground

• adjust the lower microswitch so that when the cam is

turned, the switch closes with the squeegee on the ground

(thereby activating the suction)

• after adjusting, check the microswitch is functioning

correctly

Adjusting the Washing Base (55BT and 65BT)

- MANUAL VERSION MACHINE -

1. With the pedal fixed in place, check the base confirmation

microswitch changes over and the roller remains about

0.5mm from the main body of the switch.

2. If necessary, adjust the microswitch as follows:

• loosen the M3 locknut and the relative M3 screw;

• move the microswitch in its slot;

• fix the M3 locknut and relative M3 screw until the

microswitch is blocked, taking care not to over-tighten

(and therefore damage the device itself);

• after adjusting, check the microswitch is functioning

correctly and, if necessary, repeat the calibration.

3. Carry out a functional test to check that, with the base

down, the brushes begin turning when the machine is set for

working operation.

4. Check the brushes can be easily disassembled and that there

is enough space for the fixing buttons to pass beneath the

brush-holder plates. If the brushes are not clean:

• lift the base;

• loosen the M6 locknut;

• loosen the M6 screw until there is enough space to affix

and remove the brushes from the base;

• at the same time, check the base does not interfere with

the solution tank.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 8 of 16

- AUTOMATIC VERSION MACHINE -

5. Ensure that the base microswitch block the operation of

the brushes when the base is lifted a few centimetres from the

ground.

6. If necessary, adjust the blade of the microswitch.

7. Carry out a functional test to check that, with the base down,

the brushes begin turning when the machine is set for working

operation.

8. For the correct height of the base, check that the thread of the

stem protrudes about 5 mm. Ensure that the brushes can be

easily removed and that there is sufficient space for the

passage of the fastening buttons below the brush holder

plates. Otherwise act on the thread adjustment.

9. Check the adjustment of the base lowering limit switches

in order to give the correct pressure of the base to the ground.

Pay attention that in the event of excessive pressure, the

wheels may rise slightly.

10. Check that when lifting, the base does not touch the tank and

when lowering without brushes it does not touch the floor.

Otherwise, proceed as follows:

• Using a small screwdriver as a lever, remove the plastic

cover of the microswitches inside the jack;

• Loosen the screws holding the micro sliding them to

determine the correct position;

• Tighten the screws;

• Replace the plastic cover;

• Perform a functional test.

11. Adjust the belt-stretcher spring to a length of 27mm under

compression.

12. Adjust the transversal inclination of the base:

• position the machine on an even, flat floor

• lower the base onto the floor with the brushes assembled

• loosen the screw and M8 nut that fix the left lifting arm

to the base

• rest the base on the floor so that the brushes touch the

floor simultaneously

• tighten the M8 screw and the locknut

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 9 of 16

13. Check the M8 screw that fixes the arm to the third point

allows the longitudinal movement of the base, so this can

adjust itself to the specific floor.

14. If the base vibrates because of the brush or pad movement,

tighten the nut to further compress the spring and soften the

vibrations.

Adjusting the Washing Base (50BST)

1. Ensure that the brushes can be easily removed and that there

is sufficient space for their passage. If the brushes are not

clean:

• lift the base;

• loosen the M6 locknut;

• loosen the M6 screw until there is enough space to affix

and remove the brushes from the base;

• at the same time, check the base does not interfere with

the solution tank.

2. Adjust the transversal inclination of the base:

• position the machine on an even, flat floor

• lower the base onto the floor with the brushes assembled

• loosen the screw and M8 nut that fix the left lifting arm

to the base

• rest the base on the floor so that the brushes touch the

floor simultaneously

• tighten the M8 screw and the locknut

3. Check the M8 screw that fixes the arm to the third point

allows the longitudinal movement of the base, so this can

adjust itself to the specific floor.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 10 of 16

4. Adjust the pressure relief spring by tightening the M6 screw

on the tie rod until 5-6 mm of thread remain, so as to obtain

the correct pressure on the base.

5. Assemble the transmission coupling so that there are 2 mm.

between the two hubs and that the rubber toothed star

situated between the two works properly, no vibrations or

misalignments.

6. Tighten the dowels and related nuts.

7. Adjust the drive belt tension by means of the

M8 nut, so that the thread protrudes from the support by

approx. 28-29 mm.

Refer to the WASHING version for the adjust of the automatic version.

Adjusting the Washing Base (50 B-BT)

1. With the pedal fixed in place, check the base confirmation

microswitch changes over and the roller remains about

0.5mm from the main body of the switch.

2. If necessary, adjust the microswitch as follows:

• loosen the M3 locknut and the relative M3 screw;

• move the microswitch in its slot;

• fix the M3 locknut and relative M3 screw until the

microswitch is blocked, taking care not to over-tighten

(and therefore damage the device itself);

• after adjusting, check the microswitch is functioning

correctly and, if necessary, repeat the calibration.

3. Carry out a functional test to check that, with the base

down, the brushes begin turning when the machine is set for

working operation.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 11 of 16

4. Ensure that the brush can be easily removed and that there

is sufficient space for its passage. If the brushes are not

clean:

• lift the base;

• loosen the M6 locknut;

• loosen the M6 screw until there is enough space

to affix and remove the brush from the base;

At the same time, check the base does not interfere with

the solution tank.

5. Base horizontal tilt adjustment.

• Position the machine on an even and level floor

• Mount the brush and lower the base to the floor.

• Loosen the nut on the left-hand lifting arm and allow the

base to adapt to the floor.

• The slotted bracket of the base automatically positioned

correctly.

• Tighten nut and bolt.

This operation ensures the correct alignment of the base to the

floor for uniform cleaning on the work-track.

Attention

: an incorrect angle will cause the machine to pull to

the right or to go into reverse.

6. Base vertical tilt adjustment:

• Loosen the self-locking nut .

• Adjust the base without the brush so that it touches at

the back first and that the front is 6-7 mm higher.

• Tighten the self-locking nut.

Correct adjustment ensures the correct tilt of the brush on

the floor.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 12 of 16

7. Traction adjustment: adjust the M8 screw so as to

distribute the weight of the motor to the rear of the base.

The adjustment of the screw effects the traction of the

machine.

Act on the screw shown in the figure:

• Unscrew to increase the traction effect;

• Screw to decrease the traction effect.

ATTENTION: increasing the traction of the machine diminishes

the width of the floor cleaned.

8. Check, and if necessary, adjust the tightening spring to a

compression length of 27 mm.

9. Check that the round headed screw of the brush

support touches the flat section of the brush on which it

lies. The play between the head and brush must be a

maximum of 1-2 mm with the brush hooked and lowered.

Refer to the WASHING version for the adjust of the automatic version.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 13 of 16

Testing the Detergent Dosing System

1. Check the contacts and the detergent control card seat are

clean.

2. Check the set-up of the two jumpers (J4A and J4B) of the

detergent dosing card.

3. Check the two jumpers are positioned on the two contact

points so they are

both closed (as shown in the photos below).

4. Check the detergent tubes and the detergent canister tubes

are clean, in good condition, and functioning correctly.

5. Check the detergent dosing system bypass is functioning

correctly. The bypass system is activated by means of a tap

on the base.

6. Check the dosing system is activated when the tap lever is in

the position shown in the photo (up

7. Check no detergent solution ever emerges when the tap lever

is in the position shown in the photo (down

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 14 of 16

8. Check the solution emerges due to gravity only (i.e. the

dosing system is not activated) when the tap lever is in the

position shown in the photo (central

Check the functioning and connections of the water and detergent

pumps.

Check the solution tubes are clean and in good condition.

Adjusting the squeegee

1. Adjust the inclination of the rear rubber, with the suction

motor ON, so it is even.

2. Use the special handwheel to adjust the height of the

wheels, checking the rubber inclination is between 30° and

45° and is even across its entire length.

About 30° - 45°

Rear rubber

Front rubber

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 15 of 16

3. When the squeegee is up, check it does not interfere with the

base movement pedal. If it does, adjust the M6 nut in the

spring connected to the squeegee lifting cable. Proceed as

follows:

• lift the squeegee and place a shim of about 40mm beneath

• lower the squeegee command lever

• check the threaded pin and the nut are visible

• loosen or tighten the nut, depending on whether you want

to raise or lower the squeegee

• with the squeegee up, check there is no interference

between the base movement pedal and the squeegee

support

4. Check the pressure of the squeegee on the floor. Check the

pressure created by the spring and actual weight of the

squeegee is sufficient to bend the squeegee rubbers and to

make the wheels rest evenly on the floor.

5. Check the level of pressure is not making steering difficult and

causing excessive wear on the squeegee wheels when

steering.

6. To adjust, proceed as follows:

• lower the squeegee;

• tighten the M8 locknut to increase the pressure, or

loosen it to reduce the pressure.

ADJUSTMENTS

AND

TESTING

SIMPLA 50B-BT

SIMPLA 55BT

SIMPLA 65BT

SIMPLA 50BST

Doc. 10021896

Issued 09/2010

Ver. AB

Page 16 of 16

Testing machine operation

 Check the functioning of the switches and indicator lights.

 Check the functioning of the speed regulator.

 Check the functioning of the base.

 Check the functioning of the brush motor.

 Check the functioning of the solenoid valve.

 Check the functioning of the suction motor.

 Check the functioning of the dosing system (when present).

 Check the functioning of the jacks that raise and lower the squeegees and base (when

present).

 Check the functioning of the parking brake.

 Check the condition of the batteries, clamps and cables.

Machine functional tests

 Fill the tanks with water and check for any leaks.

 Check the seal of the water system and check the water falls evenly onto the two brushes.

 Adjust the inclination and wheels of the squeegee, carrying out a functional test.

 Adjust the brush pressure and base inclination, carrying out a functional test.

 Check the efficiency of the parking brake.

 Check forward movement, backward movement, acceleration and braking.

Final Testing

Check all the functions: washing, drying, forward movement.

COMAC SIMPLA 50B-BT Use and Maintenance Manual

Brand: COMAC

Model: SIMPLA 50B-BT

Category: Scrubber

Type: Use and Maintenance Manual

This manual is also suitable for

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COMAC SIMPLA 50B-BT Use and Maintenance Manual

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COMAC SIMPLA 50B-BT Use and Maintenance Manual

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