Tennant T290 User manual

Stavale

T290

TECHNICAL SERVICE MANUAL

TECHNICAL OFFIC

PLDC04452

REVISION DAT

December 23, 2020

DAT

December 23, 2020

In line with the company's policy of constant product development and updating, the Manufacture

reserves the right to make modifications without warning.

lthough your machine may differ appreciably from the illustrations in this document, safety an

the information contained in this manual are guaranteed.

Stavale

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

WARNINGS

! DANGER!

Indicates the need for attention in order to avoid a series of consequences which

could cause death or damage to the health of the operator.

Indicates particularly important instructions.

WARNING!

Indicates the need for attention in order to avoid a series of consequences which

could cause damage to the machine or work environment or financial loss.

i INFORMATION

EE1 Error codes

D2 Main Wiring Traction Version

Main Wiring Pad Assist

Relay and drive motor

electrical connections

Circuit boards

Electrical system

D3 Wiring diagram

Brush head

A2 Replacing the brush motor

Checking brush motor current

imput,

Replacing the carbon brushes

Measuring current draw and

replacing the carbon brushes

Replacing the suction motor

Error codes

Troubleshooting E2 Troubleshooting

Drive assembly

B2 Adjusting and replacing the

squee

Checking and replacing the

float

Tanks / Suction

Assembly

Drive motor - Idle wheels

C1 Instrument panel board

Sub

ect Page

BRUSH HEAD

BRUSH MOTOR

A1.1 Cheking brush motor current input

A1.2 Replacing the brush motor carbon brushes

REPLACING THE BRUSH MOTOR

A2.1 Replacing the brush motor

BSUCTION UNIT - TANKS

SUCTION MOTOR

B1.1 Checking the suction motor current input

B1.2 Replacing the suction motor carbon brushes

B1.3 Replacing the suction motor

SQUEEGEE UNIT

B2.1

djusting the squeegee

B2.2 Replacing the squeegee blades

CHECKING AND REPLACING THE FLOATS

B3.1 Checking operation of the solution tank float

B3.2 Replacing the detergent tank float

B3.3 Checking operation of the dirty water tank float

B4.4 Replacing the dirty water tank float

DRIVE UNIT

INSTRUMENT PANEL ELECTRONIC BOARD

C1.1 Instrument panel board, setting the type batteries

C1.2 Dismantling the instrument panel board

DRIVE MOTOR - WHEELS

C2.1 Checking the drive motor current input

C2.2 Checking and replacing the carbon brushes traction motor

C2.3 Replacing the drive wheels, “BT” version

C2.4 Replacing the idle wheels

C2.5 Replacing the drive motor

RELAY AND DRIVE MOTOR ELECTRICAL CONNECTIONS

C3.1 Checking and replacing the drive relay

ELECTRONIC BOARD - ELECTRICAL SYSTEM

MACHINE'S MAIN WIRING, "PAD ASSIST" version

D1.1 Main wiring board components, "Pad Assist" version 53

MACHINE'S MAIN WIRING, "TRACTION" version

D2.1 Main wiring board components, "Traction" version

D2.2 Machine's main wiring connections, "Traction" version 56

ELECTRICAL WIRING DIAGRAMS 61

D3.1 Wiring diagram, Pad Assist version 61

D3.2 Wiring diagram Traction version 62

INDEX

Stavale

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

INDEX

Stavale

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Sub

ect Page

ERROR CODES - TROUBLESHOOTING

E1 ERROR CODES 64

E1.1 Alarm messages on the instrument panel board display

E2 TROUBLESHOOTING

E2.1 Troubleshooting

Information on the revision numbers 68

Go to the desi

nated drainin

area and em

the solution and

dirt

water tanks usin

the drain

s and the hose

rovided.

Move the machine onto flat

round. If necessar

lace chocks

under the wheels.

Press the emer

enc

switch

for the version with drive

disable the functions b

movin

the switch to

osition “0”

on all other versions.

Disconnect the batter

from the machine’s electronics b

sim

disconnectin

the ne

ative

ole onl

for the batter

versions

or un

from the mains

ower su

for the cable versions.

In this Service Manual

the terms RIGHT and LEFT are used

to indicate the sides of the machine.

These alwa

s refer to the direction of travel of the machine.

In this Service Manual

the machine version ma

be written

in brackets

(

Traction

Pad Assist

)

uotation marks

"Traction - Pad Assist".

This note indicates that the instructions onl

refer to the

version s

ecified in brackets or

uotation marks.

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

ABRUSH HEAD

INFORMATION

Indicates particularly important instructions.

WARNING

1 of 68

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

A1 BRUSH MOTOR

Fig. 1

2 of 68

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

Empty the solution tank and the dirty water tank.

Move the machine onto flat dry and smooth flooring.

Press the emergency switch (Traction) or switches into position "0" (Pad Assist).

Make sure that the batteries on the machine are charged.

Use a clamp-on ammeter with an end scale reading of at least 200 amperes, as shown in Figure 2.

Remove the power board.

Move the speed knob on the instrument panel to zero, turning it anticlockwise.

Remove the brush.

Switch the ammeter to amperes and DC

A1.1 Cheking brush motor current input

Checks

Fig. 2

3 of 68

PLDC04452

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

Isolate the red wire

Connect the clamp to the red wire A as shown in Figure 3.

Checking the current with no load, i.e. without brushes.

Turn the emergency button clockwise, Traction version only.

Press the button in instrument panel per the actuator of the brushes.

Controlling the rotation of the brushes using the drive lever, read the CURRENT (

) drawn by the brush

reduction drive.

Note down the value read, and then run the following check.

Checking the current in operation, i.e. with the brushes.

Replace the brushes on the reduction drive, and lower the brush head to the floor.

Repeat the readings, as described above.

Compare the values measured against the chart below.

If the values are OK, replace the brush motor cover.

If the values do not correspond to those specified (higher):

21a

Check that the brush drive (and thus the motor) is free to rotate, without interference.

21b

Check the power supply

OLTAGE (

) directly on the motor.

Check that the motor carbon brushes are intact, see paragraph A1.2, replace if necessary.

With brushes operating 14.0 A 19.0 A

Current input A (Amperes) Min Max

No load, head lifted 4.0 A 6.0 A

21d Replace the motor or the motors.

Fig. 3

4 of 68

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