Tennant T390 Betriebsanleitung

TECHNICAL OFFIC

PLDC04453

REVISION DAT

December 23, 2019

DAT

December 23, 2020

Stavale

T390

TECHNICAL SERVICE MANUAL

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.

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

Stavale

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

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

Brush head

A2 Replacing the brush motor

Checking brush motor current

imput,

Replacing the carbon brushes

Relay and drive motor

electrical connections

Circuit boards

Electrical system

D3 Wiring diagram

E1 Error codes

D2 Main Wiring Traction Version

Main Wiring Pad Assist

Sub

ect Page

BRUSH HEAD

BRUSH MOTOR

A1.1 Cheking brush motor current input

A1.2 Replacing the brush motor carbon brushes

A1.3 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

B3.4 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 complete drive unit (motor + reduction unit)

C2.4 Replacing the drive unit components

C2.5 Replacing the drive wheels

RELAY AND DRIVE MOTOR ELECTRICAL CONNECTIONS

C3.1 Checking and replacing the drive relay

ELECTRONIC BOARD - ELECTRICAL SYSTEM

MACHINE'S MAIN WIRING

D1.1 Main wiring board components 61

D1.2 Machine’s main wiring connections

ELECTRICAL WIRING DIAGRAMS 67

D2.1 Wiring diagram Traction version 67

INDEX

Stavale

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

INDEX

Stavale

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Sub

ect Page

ERROR CODES - TROUBLESHOOTING

E1 ERROR CODES 69

E1.1 Alarm messages on the instrument panel board display

E2 TROUBLESHOOTING

E2.1 Troubleshooting

Information on the revision numbers 73

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.

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

ABRUSH HEAD

INFORMATION

Indicates particularly important instructions.

WARNING

1 of 73

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

A1 BRUSH MOTOR

Fig. 1

2 of 73

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

the solution tank and the dirt

water tank.

Brin

to zero the amount of water dis

ensed.

Move the machine onto flat dr

and smooth floorin

Press the emer

enc

switch to switch off all the functions.

Make sure that the batteries on the machine are char

ed.

Use a clam

-on ammeter with an end scale readin

of at least 200 am

eres, as shown in Fi

ure 1.

Remove the brush head cover.

Lift one of the machine’s two drive wheels

see

ara

h C 2.1.

Move the s

eed knob on the instrument

anel to zero, turnin

it anticlockwise.

Remove the brush head cover, unscrewing the four screw.

Switch the ammeter to am

eres and DC.

CHECKING POWER INPUT FOR EACH INDIVIDUAL MOTOR

Alternatively, electrically disconnect one motor, and then check the power input of the

other motor, both at no load and when working.

Checkin

the current with no load

i.e. without brushes.

Remove the brushes and lower the head usin

the s

ecial

edal control.

Turn the emer

enc

button clockwise.

Press the button on the instrument

anel to activate the brushes.

Controllin

the rotation of the brushes usin

the drive lever

read the CURRENT

(

)

drawn by the brush reduction drive; for practicality, hold the lever in place with string.

Note down the value read, and then run the followin

check.

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

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

eat the readin

s, as described above.

Com

are the values measured a

ainst the chart below.

If the values are OK, re

lace the brush motor cover.

If the values do not corres

ond to those s

ecified

(

her

)

21a

Check that the brush drive

(

and thus the motor

)

is free to rotate, without interference.

21b

Check the

ower su

OLTAGE

(

)

directl

on the

oles of the motor.

Check that the motor carbon brushes are intact, re

lace if necessar

21d

lace the defective motor or motors.

A1.1 Checking current input

Fig. 2

Fig. 3

3 of 73

PLDC04453

REVISION 00

December 23, 2020

TECHNICAL OFFIC

Stavale

(*) see "INFORMATION" at the start of the chapter

14.0 A

No load, head lifted 4.0 A

With brushes operating

Current input A (Amperes) Min Max

6.0 A

19.0 A

A - Disconnect the right motor

B - Disconnect the black wire from the left motor C - Connect the black wire to the right motor

D - Check the right motor

CHECKING THE RIGHT MOTOR (*)

A - Disconnect the right motor CHECKING THE LEFT MOTOR (*)

B - Check the left moto

Fig. 4

Fig. 5

4 of 73

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