Electrolux EX618 Service Manual
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Electrolux EX618 Service Manual

Electrolux EX618 Service Manual

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EX618 – EX670
SU620 – SU675
W620 – W675
Compass Control
Up to machine No. SU-model:
SU620
-00520/120946
-00521/400282-402182
SU630
-00595/106611
-00521/400106-402182
SU655
-00725/105493
Service Manual
SU625
SU640
SU675
DOC. NO. 438.9227-45/05
-00595/106646
-00521/401173-402182
-00650/107383
-00795/102509
EDITION 20.2009

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Summary of Contents for Electrolux EX618

  • Page 1 Service Manual DOC. NO. 438.9227-45/05 EDITION 20.2009 EX618 – EX670 SU620 – SU675 W620 – W675 Compass Control Up to machine No. SU-model: SU620 -00520/120946 SU625 -00595/106646 -00521/400282-402182 -00521/401173-402182 SU630 -00595/106611 SU640 -00650/107383 -00521/400106-402182 SU655 -00725/105493 SU675 -00795/102509...
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  • Page 3 NOTICE TO SERVICE PERSONNEL INSTALLATION Improper installation of Wascomat laundry and wet cleaning equipment can result in personal injury and severe damage to the machine. REFER INSTALLATION TO QUALIFIED PERSONNEL! RISK OF ELECTRIC SHOCK The equipment utilizes high Voltages. Disconnect electric power before servicing. The use of proper service tools and techniques, and the use of proper repair procedures, is essential to the safety of service personnel and equipment users.
  • Page 4 Intentionally blank...
  • Page 5 Service Manual EX618 – EX670, SU620 – SU675, W620 –W675 Compass Control WARNING: ALL OPERATING AND MAINTENANCE PROCEDURES SHOWN ON THE NEXT PAGE OF THIS MANUAL MUST BE FOLLOWED DAILY FOR PROPER OPERATION OF YOUR WASCOMAT MACHINE. PLEASE ENTER THE FOLLOWING INFORMATION AS IT APPEARS ON THE MACHINE(S) DATA PLATE(S).
  • Page 6 Intentionally blank...
  • Page 7 SAFETY AND WARNINGS SIGNS Replace If Missing Or Illegible One or more of these signs must be affixed on each machine as indica- ted, when not included as part of the front instruction panel. LOCATED ON THE OPERATING INSTRUCTION SIGN OF THE MACHINE: PRECAUCION CAUTION 1.
  • Page 8 NOTICE TO: OWNERS, OPERATORS AND DEALERS OF WASCOMAT MACHINES IMPROPER INSTALLATION AND INADEQUATE MAINTENANCE, POOR HOUSEKEEPING AND WILLFUL NEGLECT OR BYPASSING OF SAFETY DEVICES MAY RESULT IN SERIOUS ACCIDENTS OR INJURY. TO ASSURE THE SAFETY OF CUSTOMERS AND/OR OPERATORS OF YOUR MACHINE, THE FOLLOWING MAINTENANCE CHECKS MUST BE PERFORMED ON A DAILY BASIS.

  • Page 9: Table Of Contents

    Contents Contents Safety precautions ..................11 Technical data .................... 13 Machine presentation ................21 Description .................... 21 Function ....................22 Program unit ..................24 Motor and motor control ............... 25 Door lock ....................26 Heating ....................27 Water connections ................27 Rear electric module ................
  • Page 10 Contents Drain valve ....................113 Description ..................113 Function ....................114 Repairs ....................115 Detergent compartment ................117 Description ..................117 Heating ..................... 119 Description ..................119 Function ....................120 Repairs ....................121 Abbreviations ................... 123 Preventive maintenance ................125...

  • Page 11: Safety Precautions

    Safety Precautions Safety Precautions The machine is only intended for water-wash use. Do not allow minors to use the machine. Do not hose down the machine with water. The machine's door lock must under no circumstances be bypassed. If the machine develops a fault, this must be reported to the person in charge as soon as possible.

  • Page 13: Technical Data

    Technical data Technical data EX618 EX625 EX630 EX640 EX655 EX670 Innerdrum volume litres/ft 75/2.6 105/3.7 130/4.6 180/6.4 240/8.5 300/10.6 diameter mm/inch 520/20 1/2 595/23 7/16 650/25 9/16 725/28 9/16 795/31 5/16 795/31 5/16 Drum speed wash extraction 1100 1025 Heating electricity 5.4/7.5...
  • Page 14 Technical data Technical data W/SU620 SU625 W/SU630 W/SU640 W/SU655 W/SU675 Innerdrum volume litres/ft 85/3.0 105/3.7 130/4.6 180/6.4 250/8.8 330/11.7 diameter mm/inch 520/20 1/2 595/23 7/16 595/23 7/16 650/25 9/16 725/28 9/16 795/31 5/16 Drum speed wash extraction 528/694 494/649 471/619 446/587 427/561 Heating...
  • Page 15 Drain Liquid detergent supply Control panel Soap box Door opening, EX618: ø 310 mm/12 3/16", EX625: ø 365 mm/14 3/8", EX630: ø 395 mm/15 9/16", EX640, EX655, EX670: ø 435 mm/17 1/8" EX618 720 690 1115 355 1030 220 1010 135 100 240 –...
  • Page 16 11 13/16 48 13/16 13 3/4 14 15/16 3 5/16 14 3/16 20 1/16 EX670 12 3/16 14 15/16 – – 3 15/16 14 3/16 13 3/16 EX618, EX625, EX630 5282 B 5281 B 5283 B Right side Rear side Front EX640, EX655, EX670...
  • Page 17 Technical data Electrical connection Cold water Hot water Steam connection Drain Liquid detergent supply Control panel Soap box Water reuse Door opening, W/SU620: ø 310 mm/12 3/16", SU625, SU630: ø 365 mm/14 3/8", W630, SU640: ø 395 mm/15 9/16", W640, W/SU655, W/SU675: ø 435 mm/17 1/8" in mm W/SU620 1115 355...
  • Page 18 Technical data in inch W/SU620 28 3/4 43 7/8 30 1/8 32 1/2 1 3/4 40 9/16 8 7/16 39 3/4 SU625 28 3/8 27 3/4 47 1/4 14 3/8 29 1/8 35 13/16 1 3/4 40 7/8 8 7/16 43 1/8 W/SU630 28 3/8...
  • Page 19 Technical data EX618 EX625 EX630 EX640 EX655 EX670 Frequency of the dynamic force 18.3 17.1 16.3 15.5 14.8 13.7 Max floor load lbs force 417±110 560±112 703±114 944±221 1158±221 1387±277 at extraction 1.9±0.5 2.5±0.5 3.1±0.5 4.2±1.0 5.2±1.0 6.2±1.2 W620/ W625/...

  • Page 21: Machine Presentation

    Machine presentation Machine presentation Description General The machines covered in this service manual include the following models: Drum volume Model name litres/ft 75/2.6 EX618 85/3.0 W/SU620 105/3.7 EX625, W/SU625 130/4.6 EX630, W/SU630 180/6.4 EX640, W/SU640 240/8.5 EX655 250/8.8 W/SU655 300/10.6 EX670 330/11.7...

  • Page 22: Function

    Machine presentation Function General This section presents a general overview of the functions of the machine. Most functions are then presented in detailed in separate chapters later on in this service manual. The machine is freely suspended, which means the outer drum and motor are mounted on a supporting ”cradle”...
  • Page 23 Machine presentation 1. Detergent drawer 10. Shock absorber (not SU- and W-model) 2. Water inlet valves 11. Avloppsventil 3, Power supply 12. Support 4. I/O-board 13. Door 5. Rear electrical module 14. Door lock 6. Motor control 15. Program knob 7.

  • Page 24: Program Unit

    Machine presentation Program unit The control panel contains a program knob and Program unit a display. The panel can also be equipped with two preset buttons. The control panel and display are used by: • the user to select the machine’s fixed wash programs, to select up to two options for each wash program and for information on the wash process and any fault indicators.

  • Page 25: Motor And Motor Control

    Machine presentation Motor and motor control The washer drum (inner drum) is belt driven by a frequency controlled motor. The motor is located on a motor shelf under the outer drum and has been arranged with a belt tensioner. Motor control is microprocessor controlled and can control the acceleration of the drum, its rpm and its retardation very precisely.

  • Page 26: Door Lock

    Machine presentation Door lock The door lock is electromechanical with twin sa- fety breakers. The lock is bi-stable, i.e. the lock must be given an active signal from the program unit to lock as well as unlock the door. A separate circuit integrated in the program unit checks and controls the locking and unlocking of the door through a lock module.

  • Page 27: Heating

    Machine presentation Heating Electric heating heats the washing water with three elements accessible from the front of the machine. The machine’s heating system is described more thoroughly in the section Heating. Water connections The machine can have one, two, three or four wa- ter inlet valves depending on the machine size and customer requirements.

  • Page 28: Detergent Compartment

    Machine presentation Detergent compartment The detergent compartment has four compart- ments for prewash, main wash, rinse and bleaching agent/liquid detergent. The machine’s detergent compartment is descri- bed more thoroughly in the section Detergent compartment. Drain valve The valve is a diaphragm valve that is opened and closed through water pressure.

  • Page 29: Troubleshooting

    Troubleshooting Troubleshooting This programming manual is intended for personnel with the authority to adjust parameters in the machine’s existing wash programs, programming slot meters, reading statistics and configuring certain machine interfaces with the user. Programming is achieved using menus in the display while the machine is in service mode. General information on troubleshooting The troubleshooting section is used to trace faults in the machine to a defective component or unit.

  • Page 30: Fault Code

    Troubleshooting Faults with fault code A fault in the program or in the machine is indicated on the display by an error message comprising an error code and a descriptive text. Fault code FAULT NO WATER 6204 Fault code The following is a brief description of all fault codes. The following pages describe fault codes, possible causes and corrective measures for each code.
  • Page 31 Troubleshooting Fault code Text message Program failure No motor comm. Level adjust. Emergency stop Door lock Start not allowed Master comm. I/O MCU Interlock I/O Communication No I/O addressed Checksum from DLCU Level offset CPU/DLCU low level Heat sink too hot Motor too hot No interlock Motor short circuit...

  • Page 32: Engaging Servicemode

    Troubleshooting Engaging servicemode Service mode is engaged by using one of the following alternative: Alt. 1 Alt. 1 Service switch on the CPU board under the top cover on the front of the machine. Alt. 2 Service switch on the I/O board at the rear of the machine to the right of the electrical connection.

  • Page 33: Description Of Fault Codes And Causes

    Troubleshooting Description of fault codes and causes Fault code 01, NO WATER This fault code is generated by the programming CPU card. When filling with water, the level specified by the wash program must be attained within a certain time. This time is normally set to 10 minutes but can vary depending on the type of machine and the software.
  • Page 34 Troubleshooting Fault code 04, NTC LOW TEMP This fault code is generated by the programming CPU card. This fault code is displayed if the temperature around the NTC sensor is below approx. -9 degrees C. A low temperature means the resistance in the sensor is too high, above approx.
  • Page 35 Troubleshooting Fault code 07, DRUM OVERFILLED This fault code is generated by the programming CPU board. The fault code arises if the drum has been filled with water above a predetermined level during an on-going wash program. It can be caused by a blocked level hose, drops of water in the level tube, defective filler valve, defective electronic filler control, etc.
  • Page 36 Troubleshooting Fault code 09, KLIXON This fault code is generated by the programming CPU board. The fault code means that the temperature in the motor has been so high that the klixon breaker in the motor has been triggered. It can be caused by over- loading the motor due to an overloaded drum, low rpm for long periods, defective klixon breaker in motor, short in cable between motor and CPU board, etc.
  • Page 37 Troubleshooting Fault code 11, UNB. ON AT PROG. START This fault code is generated by the programming CPU board. The fault code means that the mechanical imbalance breaker is already active when the wash program starts. It can be caused by a defective imbalance brea- ker, mechanical problem making the imbalance breaker always active, short in the edge connection or cables, etc.
  • Page 38 Troubleshooting Fault code 15, EMERGENCY STOP This fault code is generated by the programming CPU board. The fault code arises if the emergency stop switch has been activated on the mach- ine. The cause can be inadvertent activation of the emergency stop, defective emergency stop switch, incorrect or shorted cable, etc.
  • Page 39 Troubleshooting Fault code 20, I/O MCU INTERLOCK This fault code is generated by the programming CPU board. The program controller has read from the motor control or I/O board that the interlock is not active. The reason for interlock failure can be a problem with the hatch lock, damaged motor supply cables or the I/O board with interlock voltage etc.
  • Page 40 Troubleshooting Fault code 23, NO I/O ADDRESSED The fault code means that there is no I/O board addressed in the system at all. Action: • (Requires password) Readdress the existing I/O board from the service menu. Fault code 24, CHECKSUM FROM DLCU This fault code is generated by the programming CPU board. The program unit has detected a fault in the internal communication in the DLCU-pro- cessor.
  • Page 41 Troubleshooting Fault code 28, CPU/DLCU LOW LEVELS The DLCU contains a mechanical level monitor which ensures that there is no water in the machine when the lock opens. To ensure that the level monitor functions correctly, the mechanical level monitor is compared with a nominal value generated by the CPU, which is compared with the elec- tronic level check.
  • Page 42 Troubleshooting Fault code 32, MOTOR TOO HOT This fault code is generated by the motor control. Each time the motor is started from stationary, the motor control will first measure the resistance between two phases in the motor. The motor control processor governs the output transistors so that a determined DC current flows between two phases in the motor winding.
  • Page 43 Troubleshooting Fault code 33, NO INTERLOCK This fault code is generated by the motor control. The motor control must be powered with 230V/50 Hz on the interlock input in order to drive the motor. This signal is confirmation that the door is closed and locked. Mo- tor control receives its commands to rotate the drum from the timer via a serial communication link between the motor control and timer.
  • Page 44 Troubleshooting Fault code 35, MOTOR SHORT CIRCUIT This fault code is generated by the motor control. The motor control reads the power consumption of the motor continuously. If the current for some reason gets too high (= exceeds a certain limit), the motor control will cut the current to the motor. After the motor has stopped (= tachometer indi- cates stationary motor), the motor control will attempt to restart it. If the motor control then detects high motor current again, the ”Short circuit motor”...
  • Page 45 Troubleshooting Fault code 36, INTERLOCK HARDWARE This fault code is generated by the motor control. The motor control must be powered with 230V/50 Hz on the interlock input in order to drive the motor. The interlock circuits in the motor control have been split into two channels so that a component fault in motor control cannot give a false confirmation that the door is locked.
  • Page 46 Troubleshooting Fault code 38, HIGH DC VOLTAGE This fault code is generated by the motor control unit. The motor control unit constantly measures the voltage over the mains input. If the voltage is too high (= exceeds a certain limit), the motor control unit will shut off the current to the motor. Once the motor has stopped (= the tacho sensor indicates that the motor is stationary), the motor control unit checks to see whether the input voltage is still high.
  • Page 47 Troubleshooting Fault code 45, MOTOR NOT FOLLOW This fault code is generated by the motor control. The motor control must always receive information on the rotation of the motor from the tacho sensor in order to rotate. If the tacho sensor is not working, the motor can rotate for max.
  • Page 48 Troubleshooting Fault code 52, CHARGE CIRCUIT DLCU contains an arming circuit that is charged when the door lock coil is to be activated. For safety reasons, this arming circuit must be discharged when the door lock coil is not to be activated. If the arming circuit for operating the door lock is charged when it is not supposed to be, a fault message will be sent to the CPU processor.
  • Page 49 Troubleshooting Fault code 54, TACHO, NO SET SIGNAL DLCU counts the tacho pulses from the motor in order to guarantee that the drum is stationary when the door is opened. To ensure that the signal from the tacho generator is working correctly, DLCU compares the tacho signal to a default value from the CPU processor, which is due to the CPU having activated the motor.
  • Page 50 Troubleshooting Fault code 56, SET SPEED DOOR OPEN DLCU counts the tacho pulses from the motor in order to guarantee that the drum is stationary when the door is opened. To ensure that the signal from the tacho generator is working correctly, DLCU compares the tacho signal to a default value from the CPU processor, which is due to the CPU having activated the motor.
  • Page 51 Troubleshooting Fault code 60, ACTUATOR CIRCUIT The DLCU processor controls the door lock actuator coil. The DLCU pro- cessor checks continuously that the coil is engaged. DLCU can detect a break in the circuit (>50 kohm) (DLCU cannot detect a short in the circuit). If there is a break in the actuator circuit, CPU will be notified;...

  • Page 53: Program Unit

    Program unit Program unit Description General Information The program unit is electronic and comprises a circuit board containing microprocessor, pro- gram memory, current regulating circuits, tem- perature and level control, etc. The program unit receives its power from a se- parate voltage unit.
  • Page 54 Program unit Inputs and outputs The program unit board has the following inputs and outputs: Board connector Function Con 1 Input from temperature sensor (Temp) Con 2 Databus (D-bus) Con 3 Databus (D-bus) Con 4 Tacho Con 5 Communication, motor control unit (M-com) Con 6 Connection for software/service download (P-load) Con 7...

  • Page 55: Menu Tree

    Program unit Menu tree The machine software is constructed with menus that are structured ac- cording to the menu tree below. The menus become available when the machine is in service mode, see under the heading ”Engaging service mode”. SERVICE CONFIG 1 PAUSE PERMITTED ACTIVATE OUTPUTS...

  • Page 56: Engaging Servicemode

    Program unit Engaging servicemode Service mode is engaged by using one of the following alternative: Alt. 1 Alt. 1 Service switch on the CPU board under the top cover on the front of the machine. Alt. 2 Service switch on the I/O board at the rear of the machine to the right of the electrical connection.

  • Page 57: Service Program

    Program unit Service program The service program is used to facilitate trou- bleshooting the machine. Using this program MAIN MENU 01.00.00.00 you can: SERVICE PARAMETER PROGR. • control the machine functions individually STATISTICS CONFIG 1 • check the sensor signals to the CPU CONFIG 2 ADJUST DISPLAY • check the communication in the machine control system 6204 • calibrate the weighing function • weigh and measure unbalance...
  • Page 58 Program unit ACTIVATE OUTPUTS Select the ACTIVATE OUTPUTS row and press the knob. *SERVICE* 01.01.00.00 The display now shows the functions (outputs) ACTIVATE OUTPUTS that can be activated. SHOW INPUTS ARTICLE NUMBER • DOOR SHOW DLCU COM. • NORMAL DRAIN RESET DLCU • DRAIN A-D • COLD WATER 6204 • HOT WATER • HARD WATER • TANK 1-4 WATER • HEAT 1...
  • Page 59 Program unit SHOW INPUTS Select the SHOW INPUTS row and press the knob. The display now shows the sensor signals *SERVICE* (inputs) that can be activated. 01.02.00.00 ACTIVATE OUTPUTS • COUNT 1 SHOW INPUTS • DOOR LOCK ARTICLE NUMBER • DOOR CLOSED SHOW DLCU COM. • START BUTTON CPU RESET DLCU • SERVICE BUTTON...
  • Page 60 Program unit ARTICLE NUMBER Select the ARTICLE NUMBER row and press the knob. You can now choose on the display to *SERVICE* 01.03.00.00 show the article numbers for the program units, SHOW INPUTS I/O boards, motor control or DLCU fitted in the ARTICLE NUMBER SHOW DLCU COM. machine. Select the unit for which to show the RESET DLCU article number.
  • Page 61 Program unit SHOW MCU COM. Select the SHOW MCU COM. row and press the knob. *SERVICE* 01.06.00.00 The display shows the status of the communica- RESET DLCU SHOW MCU COM. tion to and from the frequency control. RESET MCU SHOW SINGLE SHOW COM.PORTS WEIGHT CALIBRATION RESET MCU...
  • Page 62 Program unit WEIGHT CALIBRATION Select the WEIGHT CALIBRATION row and press the knob. *SERVICE* 01.10.00.00 SHOW COM.PORTAR • Operate the machine with an empty drum. WEIGHT CALIBRATION MEASURE WEIGHT • After weight calibration, the weight deviation MEASURE UNBALANCE will be shown in a hexadecimal format on the DISPLAY TEST EXIT bottom line of the display. • The drum will go faster and slower a num- 6204 ber of times during weight calibration.
  • Page 63 Program unit MEASURE UNBALANCE Select the MEASURE UNBALANCE row and press the knob. *SERVICE* 01.12.00.00 Put in a known unbalance weight. A correspon- MEASURE WEIGHT MEASURE UNBALANCE ding weight must be shown in the display once DISPLAY TEST imbalance measurement has taken place. EXIT Confirm that measurement is to be performed with YES or return to the previous menu with...

  • Page 64: Config 1

    Program unit Config 1 The configuration 1 menu contains all the func- tions and parameters that service personnel can MAIN MENU 04.00.00.00 change without a password. STATISTICS CONFIG 1 Engage the machine’s service mode. CONFIG 2 ADJUST DISPLAY Select the CONFIG 1 row in the main menu and RESET TO FACTORY press the knob.
  • Page 65 Program unit • TIMEOUT,PAUSE BUZZ. SEC • MAX FILL TIME, SEC • 6. WATER IN DRUM • 7. DRUM OVERFILLED CONFIG 1 • 10. DRUM NOT DRAINED 04.01.00.00 • MACHINE ADDRESS 0000 PAUSE PERMITTED • PASSWORD 0000 RAPID ADVANCE NEW PROG. SELECT • SHOW WEIGHT TIME, SEC SHOW TIME • MAXDIFF.WASH TIME MIN SHOW TEMP...
  • Page 66 Program unit PAUSE PERMITTED Select whether it should be possible to pause during an on-going wash program. Yes = A pause is allowed during a wash program. No = A pause is not allowed during a wash program. RAPID ADVANCE Select whether is should be possible to step rapidly forward or backward through the wash program while it is in progress.
  • Page 67 Program unit SHOW TEMP Select whether the current water temperature is to be shown on the dis- play window while a wash program is in progress. This function cannot be shown on the display at the same time as the SHOW IS LEVEL function, only one of the functions can be shown at one time. Yes = The water temperature is shown.
  • Page 68 Program unit TEMP CONTROL WATER Select whether the machine is to control and adjust the water temperature by opening and closing the main valves for hot and cold water during fil- ling. Yes = Control of main valves during filling. - Alt.1: Hot and cold water valves both open.
  • Page 69 Program unit AUTO START PAID Select whether the machine is to be able to start automatically, when full price has been paid, for the chosen wash program. Yes = Automatic start engaged. Note! If the signal for blocking the start button is engaged, it also applies to the blocking signal for the automatic starting function.
  • Page 70 Program unit SHOW PROG. COUNTER Select whether the contents of the machine’s counter of completed wash programs should be shown in the display window while a wash program is in progress or outside the wash program without going into service mode. The counter is shown on the display after pressing the control knob twice in quick succession.
  • Page 71 Program unit AUTO PROG SELECT Choose whether wash programme 1 should be selected automatically and displayed in start position as soon as the door is opened/closed or coins are inserted in the coin slot. Yes = Automatic programme selection takes place. No = Automatic programme selection off MEASURE WEIGHT Select whether the count weight function should be activated. Note that the function cannot be activated for wash programs that are programmed for no weight count.
  • Page 72 Program unit COIN VALUE 1 and 2 Specify with the knob the value (0 999) for the respective coin slot. For example: Coin 1, 1 = 1 EURO Coin 2, 5 = 5 EURO Coin 1, 50 = 50 Cent Coin 2, 100 = 1 EURO Setting the price to 300 and selecting COLON WHEN PRICE will display the price as 3:00. DOT WHEN PRICE On machines with coin counter, the price can be displayed with or without dot (0:00 or 000).
  • Page 73 Program unit MACHINE ADDRESS Specify with the knob the machine’s address (0 - 127) that is used when the machine is connected to the CMIS system. PASSWORD Select whether the functions under CONFIG 1 should be password protec- ted or not. The password comprises four numerals. The code 0000 means no pass- word is required for the CONFIG 1 menu. The password code can be changed or removed at any time.
  • Page 74 Program unit OFFS.LEVEL READING MM The value set is subtracted from the ACTUAL value in mm in order to com- pensate for the distance between the level recess and the bottom of the inner drum. Once this has been set, the water level above the bottom of the inner drum, etc.
  • Page 75 Program unit FLUSH ON, POWD.SEC Rinse times for rinsing detergent after the drum has been filled with water. The time is given in steps of 1 second in the range 0 -255 seconds. LEVEL COOL DOWN, SCU Select the level to which the machine should be filled with the cold water valve if the wash program includes the rapid cooling function.

  • Page 76: Activate Wash Progr

    Program unit Activate wash progr. The ACTIVATE WASH PROGR. menu is used to specify the wash programs in the program library MAIN MENU 08.00.00.00 that are to be made available to the user and in RESET TO FACTORY which order the wash programs are to be pre- ACTIVATE WASH PROGR.

  • Page 77: Unbalance Detection

    Program unit Unbalance detection When the drum in a drain sequence starts its acceleration from wash rpm to distribution rpm, the extreme unbalance measurement will start once about 90% of the distribution rpm has been attained. Subsequently, during the entire remaining super unbalance measurement, the distribution time and during the entire subsequent extraction time, the program unit will detect whether there is any extreme unbalance.

  • Page 79: I/O Modules

    I/O modules I/O modules General Washing machines may be equipped with either one or two I/O modules: • I/O module 1 controls internal machine functions and is always instal- led in the machine prior to delivery. It controls outputs to water valves, waste discharge and heating. • I/O module 2 is installed as an optional extra, controlling the external functions of the machine, i.e. inputs from payment and booking sys- tems and outputs to detergent pumps.

  • Page 80: Function Options Via The Service Program

    I/O modules Function options via the service program Engage service mode, highlight the SERVICE line in the main menu and press the knob. MAIN MENU 01.00.00.00 The display will now show the different subme- SERVICE PARAMETER PROGR. nus in the service program. STATISTICS CONFIG 1 Highlight the ARTICLE NUMBER line and press CONFIG 2 the knob. You can now choose to view the ar-...

  • Page 81: Function Options Via Program Designation

    I/O modules Function options via program designation The parameter software installed in a machine’s ����� program device on delivery is specified on 2 ����� ���������� ���������� ��������������� ��������� plates, one located on the inside of the door and �������� ���� ����������� �� ���� ����������� �������������� ������� one by the machine's electrical connection.

  • Page 82: Function Options For Type 1 And Type 2 I/O Modules

    I/O modules Function options for Type 1 and Type 2 I/O modules Function options, I/O module Type 1 Waste Waste Waste Waste Waste Heating Heating Heating Heating Heating 3 Hot water 3 Hot water – 1 Hot water 1 Hot water 3 Cold water 4 Cold water 4 Cold water...

  • Page 83: Replacement Of I/O Module

    I/O modules Replacement of I/O module I/O modules 1 and 2 are installed in the same way, but are located in different parts of the machine. The following illustration only shows how to replace I/O module 2, but the same pro- �...

  • Page 84: External Connections To I/O Module Type 2

    I/O modules External connections to I/O module type 2 1 = N Connection of external dosing equipment 2 = L 4 = Earth The external dosing equipment power supply must never be connected to the machine's inco- ming terminal block. 11 = N 18 = Program Machines fitted with connectors 12 = Signal 1 13 = Signal 2 • Connect the pump assembly to connections...
  • Page 85 I/O modules Outputs • External power supply (e.g. 24V DC) for Dosing system pumps is to be connected to 9 and 10. If the internal power supply (from the washing machine) is to be used, it may be taken from 1 (N) and connected to 9 and from 2 (L) and connected to 10.
  • Page 86 I/O modules • Connection 8 may be connected if there is to be a pause in the wash program, e.g. while detergent is being dosed. The figure shows an example of engaging a 24V pause signal. The wash program will pause for as long as the pause signal remains active (high). Dosing system Com 5-24V 24 V Pause signa 24V DC 6266 • If connection 7 is connected, an error message will be shown in the display if any of the chemical tanks are empty. However, the wash pro- gram will continue.
  • Page 87 I/O modules Circuit diagram of function options for I/O module type 2 The wiring diagram for I/O module type 2 may be one of the following vari- ants: 22A, 22B, 22C, 22D, 22E, 22F or 22G. � ���������������� � ������� �...
  • Page 88 I/O modules � ���������������� � ������� � �������������� � � � � � � � � � � � � � � � � � � � ����� ������� ���� ������� ������ � � � � � � � � �...
  • Page 89 I/O modules � ���������������� � ������� � �������������� � � � � � � � � � � � � � � � � � � � ����� ������� ���� ������� ������ � � � � � � � � �...
  • Page 90 I/O modules � ���������������� � ������� � �������������� � � � � � � � � � � � � � � � � � � � ����� ������� ���� ������� ������ � � � � � � � � �...
  • Page 91 I/O modules � ���������������� � ������� � �������������� � � � � � � � � � � � � � � � � � � � ������� ����� ���� ������� ������ � � � � � � � � �...
  • Page 92 I/O modules...
  • Page 93 I/O modules � ���������������� � ������� � �������������� � � � � � � � � � � � � � � � � � � � ��� � � � � � � � � � �� �� �� ��...

  • Page 94: Machines With I/O Module Type 3

    I/O modules Machines with I/O module type 3 ��� � � � � � � � � � � � � � � ����� ����� ����� ��� ���� � � � 6636 • By maintaining an active (high) signal on connection 3 "Price reduction”, the price of the wash program can be reduced. This function has a number of uses, including providing reductions during a specific period of the day.

  • Page 95: Addressing I/O Modules

    I/O modules Addressing I/O modules After replacing an I/O module or in instances where a second module has been added to a MAIN MENU 08.00.00.00 washing machine, the new I/O module must be RESET TO FACTORY addressed in order to activate its function op- ACTIVATE WASH PROGR.

  • Page 97: Door And Door Lock

    Door and door lock Door and door lock Description General The door locks consists of the following: • Door lock, which contains - An actuator that locks the door lock and also has two built-in micro switches, S4a and S4b. The actuator is bi-stable, i.e., it has two stable positions: locked door and unlocked door.

  • Page 98: Function

    Door and door lock Function The door lock locks the door When the door is closed (closed door lock switch S3), the programme unit may request door locking by applying a voltage of 200-240 V on the door lock controller A31 input X92. The following check is made by the A31 card prior to locking of the door: • No water in drum - input "level" from level guard B2 is closed = 0 V • Drum not turning - pulse frequency on input "Tacho"...
  • Page 99 Door and door lock The door lock unlocks the door The programme unit requests door unlocking by applying 0 V on input X92 of the door lock controller. The following check is made prior to unlocking of the door: • No water in drum - input "Level" from level guard B2 is closed = 0 V • Drum not turning - pulse frequency on input "Tacho" from rotation sensor B3 is less than 0.4 Hz.

  • Page 100: Repairs

    Door and door lock Repairs Repair work on the machine should only be done by specially trained personnel. Emergency opening of door lock 1. Take down power from the machine by tur- ning the main power switch to the 0 position. 2.
  • Page 101 Door and door lock Replacing the door lock 1. Take down power from the machine by turning the main power switch to the 0 position. 2. Remove the front cover alt. side pole. 3. Remove the door (two screws in each hinge). 4.

  • Page 103: Motor And Motor Control

    Motor and motor control Motor and motor control Warnings DANGER Be careful when measuring the electric components in the motor control. All components have a potential difference of approx. 300 V in relation to protective earth and neutral. When the green LED on the motor control card is lit, the compo- nents carry dangerous voltages.

  • Page 104: Description

    Motor and motor control Description Motor The motor is fitted in a bridge carrier under the outer drum. It drives the washing drum using a drive belt. The motor is frequency-regulated and is con- trolled by a microcomputer control. The vari- ous speeds for normal operation, distribution speeds and extraction as well as acceleration/ retardation can be controlled with a high de-...
  • Page 105 Motor and motor control Motor control The motor control unit is microcomputer control- led and is situated under the top cover of the Motor control U1 machine, right above the outer drum. The unit consists of a PCB (mother board) fitted on a heat sink that does double-duty as part of the housing.

  • Page 106: Function

    Motor and motor control Function DANGER Be careful when measuring the electric components in the motor control. All components have a potential difference of approx. 300 V in relation to protective earth and neutral. When the green LED on the motor control card is lit, the compo- nents carry dangerous voltages.
  • Page 107 Motor and motor control The motor control is also able to deliver the various instantaneous and output values during constant speed, acceleration and retardation. These values are used to calculate the weight of X301 X302 the loaded laundry and to detect any load imba- lances.
  • Page 108 6671 motor thermal protector The motor is fed with alternating current with va- rying frequency that is proportional to the motor speed. EX618-EX630 Card No. Function X 312:1 AC supply to motor, phase 1 X 312:2 AC supply to motor, phase 2...

  • Page 109: Led Indications

    Motor and motor control LED indications Green LED Two LEDs, one yellow and one green, indicate Yellow LED any errors on the motor controller and motor. The table below shows the blinking patterns of the various error codes. 6657 Green LED LED blinking pattern Cause OK blink (brief pause every 5 seconds)

  • Page 110: Repairs

    Motor and motor control Repairs Mounting bolt Spacer Repair work on the machine should only be done by specially trained personnel. Motor replacement Disassembly 1. Take down power from the machine. 2. Remove the rear cover. 3. Undo the bracket for the drain hose connec- tor from the lower rear piece, then remove the rear cover.

  • Page 111: Adjustments

    Adjust drive belt tension if values exceed those shown in the table. The drive belt tension should be as follows: Model Force A Post tensioning B New belt C (mm) (mm) EX618* EX – model EX618** EX625 EX630 EX640 EX655 EX670 * up to machine No.
  • Page 112 Motor and motor control From machine No. 520/111628-111640 520/115134-115143 520/120399-120408 520/121021- To adjust drive belt tension: first undo the motor retaining screw (A) by using two cap keys. When undoing screw (A) use one cap key as holder-on on the screw's nut. Press down the motor by using a screw driver in order to tension the belt.

  • Page 113: Drain Valve

    Drain valve Drain valve EX – model Description The drain valve is situated on a flange at the bot- tom of the outer drum and can be accessed from the front after removing the front cover. The drain valve consists of the following principal parts: • Lower part with rubber diaphragm.

  • Page 114: Function

    Drain valve Function The drain valve uses the water pressure in the cold-water inlet to close the valve. A feed hose is connected between the water inlet and the control valve. When the control valve operates (drain valve should be closed), the control valve opens the water pressure onto the feed hose, which is con- 3359 nected to the lower part of the drain valve.

  • Page 115: Repairs

    Drain valve Repairs Repair work on the machine should only be done by specially trained personnel. Disassembly For repair works on the drain valve, there is a risk that water still left in the machine may flood onto the floor. Be sure to dry up any spilled water since it may cause people to slip and hurt themselves.
  • Page 116 Drain valve Assembling 1. Connect the pressure hose to the lower part of the valve. Verify that the hose is not bent or pinched. 2. Fit the rubber bellows onto the sleeve coup- ling. 3. Hook the valve onto the bolts and turn the valve into position. Secure the 4 retaining bolts of the valve.

  • Page 117: Detergent Compartment

    Detergent compartment Detergent compartment Description Detergent compartment The detergent compartment of the machine is designed for use with powder and liquid deter- gent. The compartment is divided into four sub- compartments as follows: • Compartment 1 - For pre wash with powder or liquid detergent. • Compartment 2 - For main wash with deter- gent powder.

  • Page 119: Heating

    Further is available. Machine Heating element size model (kW) EX618 3 x 0.665, 3 x 1, 3 x 1.8, 3 x 2.5 W/SU20 3 x 0.665, 3 x 1, 3 x 1.8, 3 x 2.5 EX/W/SU625 3 x 2.5 3 x 3.3 EX/W/SU630 3 x 2 x 2.165...

  • Page 120: Function

    Heating Function Electric heating The three heating elements in the machine are connected to separate phases and are swit- ched on and using one or two heating contac- tors, K.21 and K22 (two contactors are used for higher heating power). The heating contactors are controlled by the programme unit A1, output (X36:7).

  • Page 121: Repairs

    Heating Repairs Repair work on the machine should only be done by specially trained personnel. Heating element Replacing the heating elements Wen replacing the heating elements, there is a risk that water still left in the machine may flood onto the floor. Be sure to dry up any spilled water since it may cause people to slip and hurt themselves.

  • Page 123: Abbreviations

    Abbreviations Abbreviations Abbreviation Explanation DLCU Door lock control unit Motor control unit Residual moisture control Management information system Central payment system Scale unit Software DMIS Detergent management system EMIS External management information system Clock-wise Counter clock-wise A/D SCU Analog/digital scale unit...

  • Page 125: Preventive Maintenance

    Preventive maintenance Preventive maintenance To maintain correct and proper functioning and to prevent interruption of service, the following maintenance scheme should be adhered to. The maintenance interval should be adapted to how frequently the machi- ne is used. Daily • Check the door and door lock: - Let the door remain open and try starting the machine.
  • Page 126 Preventive maintenance - Verify that all internal hoses do not leak. - Inspect the drive belt. Adjust the tension or replace if necessary. - Check that water does not leak onto the floor. - If the heating time is unusually long, check the heating elements. If the water is very hard, check whether there are lime deposits on the heating elements.

This manual is also suitable for:

Ex670Su620Su675W620W675

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