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Customer Service Technical Office Gias Italy
TECHNICAL NOTE No. 005 LB Apr. 7, 2008
SUBJECT: Washing Machines and Wash & Dryers: functionality check of the electric, electromechanic and electronic components.
(Information in Handbook: LB2 Updated on: October 2007 - Update: 1) 1) FOREWORD:
This Technical Note resumes the all the necessary procedures, to check the functionality of the main electric, electromechanical and electronic components, installed on the Candy designed washing appliances produced from 2001 until today.
2)
SUGGESTED TOOLS AND ACCESSORIES:
To easily carry out the checks listed in this Note, we suggest the use of the hereunder listed instruments and tools: · DIGITAL MULTIMETER: the Multimeter must be capable of measuring Voltage (V) and Current values (A) for both Alternated (AC) and Continuous (CC) Currents; the Ohmic values (), the Diodes and Continuity check (with Buzzer). The Multimeter must be equipped with Test Leads with safety plugs connectors (like the Multimeter offered by GIAS in the Technical Note No. 001GE 2001, updated in the year 2006). DIGITAL THERMOMETER: the Digital Thermometer can be either a classic one with wire thermocouple and contact probe, or an "infrared" one with the possibility of connecting a wire thermocouple as well (like the Infrared Thermometer offered by GIAS in the Technical Note No. 001GE 2001, updated in the year 2006). PATCH CORD EXTENSION: managed by GIAS with P/N. 91941051 (Technical Note No. 001GE 2001, updated in the year 2006) is equipped with a magneticthermic main safety switch and allows to carry out "safe" checks on all components of the appliance and the Self-diagnosis as well. It comes equipped with a couple of black/red Multimeter's cables with safety plugs.
·
·
For the easy and safe check of the motorized selectors, potentiometers and electric motors, GIAS has made available some specially designed Test Leads with safety plugs, suitable to be directly plugged-in the Multimeter's sockets (see ATTACHMENT A and ATTACHMENT B). · MAINS CABLE: it can be a whatever original GIAS Washing Machine's spare mains cable, equipped by you with INSULATED (covered) MALE AMP connectors. It's necessary to check the Motorized Selectors.
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3) FUNCTIONAL CHECK OF THE PROGRAMS SELECTORS:
3a)
Check of MOTORIZED SELECTORS with "Short Shaft" and "Long Shaft" (16, 22, 30 positions)
The Motorized Selectors (both with Short and Long shaft see pictures) were used on the Washing Machines with mechanical water distribution system (with rod and movable spray nozzle), with all types of available electronics. These selectors include a potentiometer with several (16,22,30) setting positions, mechanically coupled with an electric motor that was used to move the rod connected with the movable spray nozzle. Each Potentiometer's setting is corresponding to a precise and unique ohmic () value, each one being related to a different washing program. The Cuore Control Module is sending a low voltage current to the selector, the current voltage being lowered when crossing the resistance of the set position. Then the current returns to the Control module. Reading the voltage value of the returning current, the Control Module is then able to understand what the Selector's setting is.
INVENSYS- 30 P0S. SHORT SHAFT INVENSYS- 30 POS. LONG SHAFT
CONNECTOR
CONNECTOR
INVENSYS- 22 POS. LONG SHAFT
INVENSYS- 16 POS. LONG SHAFT CONNECTOR
CONNECTOR
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MDL 22 POS. LONG SHAFT CONNECTOR
MDL (REAR VIEW)
NEEDED MATERIALS TO CHECK THE MOTORIZED SELECTORS: Digital Multimeter with sockets for cables with safety plugs connectors, Testing Cable for Motorized Selectors (P/N. 49009656 See ATTACHMENT A). Mains Cable with insulated AMP connectors and SHUKO plug (See Chapter 2).
SUGGESTION: It's possibile to check the Motorized Selector's functionality directy on the Washing Machine, without any need of removing it. The Machine must be UNPLUGGED and without the Top Cover. Just remove all Selector's connectors.
3a1)
TESTING THE SELECTOR'S MICROSWITCH ON THE (OFF) POSITION:
· With the Selector (long shaft) on the Machine, set the Programs Knob to OFF. · Set Multimeter on Continuity Check (with buzzer) and set the Test Leads on the contacts of the microswitch. The reading must be Open Circuit. If the Selector is not mounted on the Machine, rotate clockwise its shaft, until a setting with no continuity on the microswitch contacts is found. Otherwise, the Selector's microswitch must be short circuited (contacts glued).
MANUALLY TURN CLOCKWISE THE SELECTOR'S SHAFT, UNTIL OPEN CIRCUIT IS FOUND ON THE MICROSWITCH CONTACTS.
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3a2) CHECKING THE OHMIC () VALUES OF EACH SINGLE SETTING POSITION:
Connect the GIAS Test Cable P/N. 49009656" to the Selector to be tested. Connect the Plugs 4 5 of the Test Cable to the Multimeter and set it to Ohmic () values reading. IMPORTANT: it's possibile to carry out three different Multimeter's readings, being the Test Cable conncted to the Multimeter through its Safety Plugs 3 5, 3 4 or
4 5. 4
and
The best reading is got by plugging-in the Cable's Safety Plugs
5.
· Starting from the OFF (0) position (see par. 3a1), manually turn clockwise the Selector's shaft and read on the Multimeter's display the corresponding Ohmic value. Check for corresponding values, on the next Tables, specific for the Motorized Selectors. Data on Tables are different, depending on the Selector's make (INVENSYS or MDL Pages 6 and 7). The herebelow picture shows a reading carried out through Safety Plugs 4 5 of GIAS Test Cable, on a Motorized Selector by INVENSYS.
4 5
3a3) CHECKING THE WORKING OF THE SELECTOR'S MOTOR:
· Connect the GIAS Test Cable P/N. 49009656 to the Selector to be tested. Connect the insulated male AMP connectors of a Mains Cable to the insulated female AMP connectors of the GIAS Test Cable (1 and 7 see next picture). Plug the Mains Cable into a 230V/AC 50Hz socket. Check that the Motor is working. SUGGESTION: Use for this test, the GIAS Safety Patch Cord P/N. 91941051.
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Feed the Motorized Selector's Motor through the AMP connectors 1 and 7. Check the r works and water cam rod rotates.
7 1
230V/AC-50Hz.
3a4)
VALID ONLY FOR "LONG SHAFT" MOTORIZED SELECTORS - CHECKING THE RESETTING OF THE WATER DISTRIBUTION CAM DRIVING ROD:
· Connect the GIAS Test Cable P/N. 49009656" to the Selector to be tested. Connect the insulated male AMP connectors of a Mains Cable to the insulated female AMP connectors of the GIAS Test Cable (1 and 7 see picture). · Set Multimeter to Continuity Check (BUZZER). Plug-in GIAS Test Cable 3 and 4 in the Multimeter. · Electrically feed the Selector's Motor through the connected Mains Cable. The Motor must work and the Water Distribution Cam driving Rod must rotate. · Check that the Multimeter's buzzer BEEPS once, during a complete revolution of the Water Distribution Cam driving Rod.
Feed the motor (1 7) and check that a BEEP is emitted once by continuity checking Multimeter, durino a complete revolution of driving rod C (closed circuit)
C
AC 230V 50Hz
AC -230V 50Hz.
1 7
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Ohmic Values Chart Valid For Motorized Selectors By "MDL" ("Short Shaft" and "Long Shaft" versions, both 22 and 30 positions)
Position
30 P. SHORT SHAFT
Value () (Contacts 4 - 5) Open Circuit
22 P. LONG SHAFT
Value () (Contacts 4 - 5) Open Circuit
30 P. LONG SHAFT
Value () (Contacts 4 - 5) Open Circuit
0
(OFF)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
6
480 333 940 600 1367 857 1765 1111 2132 1363 2470 1615 2779 1867 3058 2117 3308 2368 3529 2619 3720 2869 3882 3120 4014 3370 4117 3620 4191
558 367 968 627 1382 866 1773 1125 2122 1377 2449 1626 2749 1881 3030 2150 3250 2395 3468 2664 3640
NOT AVAILABLE VALUES
480 333 940 600 1367 857 1765 1111 2132 1363 2470 1615 2779 1867 3058 2117 3308 2368 3529 2619 3720 2869 3882 3120 4014 3370 4117 3620 4191 RM - RG
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NOTE: the Ohmic Values as read in the Setting "0" (OFF Position) may slightly differ from what reported in the hereunder chart. Ohmic Values Chart valid for Motorized and Not Motorized Programs Selectord by "INVENSYS" and "ROLD" (All 12,16,22,30 Positions Versions)
Position
Value () (Contacts 3 - 5)
Variable value
Value () (Contacts 3 - 4)
Variable value
Value () (Contacts 4 - 5) ~ 100 ~ 0,2 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000
7
0
(OFF)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
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3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200 3200
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3000 2900 2800 2700 2600 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200
3b)
FUNCTIONAL CHECK OF NOT MOTORIZED SELECTORS "Long Shaft" (12,16,22 positions)
These types of Programs Selectors are uniquely used where a New Water Distribution System is present (double solenoid valve, directly feed by the Cuore Control Module and 3 Compartments Detergent Drawer). The "NOT MOTORIZED" Programs Selectors (see hereunder pictures) basically are fixed positions potentiometers, each position of setting corresponding to a different Ohmic value of resistance that can be read by the Cuore Control Module. An OFF (0) position is always present as well.
"MICR0SWITCH" (ON OFF)
CONNECTOR
CONNECTOR
Positions
22
Programs setting shaft
Positions
16
Programs setting shaft
IMPORTANT: All presently used "NOT MOTORIZED PROGRAM SELECTORS" are produced by the "ROLD" maker. Of course, these Selectors are NOT INTERCHANGEABLE with the previously described MOTORIZED ones. Please always check for their part numbers on the related GIASTECH spare parts lists.
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3b1)
SET SELECTOR TO "O": connect Multimeter's Test Leads to the Selector's microswitch contacts (see previous pictures). Slowly rotate the Selector's shaft, until the OPEN CIRCUITED setting position is found. Should no open circuited setting be found, the Selector's microswitch is SHORT CIRCUITED and the Selector must be replaced. The Selector's "0" (OFF) position is the only open circuited one. CARRY OUT THE CHECK OF THE DIFFERENT OHMIC () VALUES AVAILABLE IN EACH POSITION OF SETTING: · To carry out this check, the GIAS Test Cable P/N. 49009657 (see ATTACHMENT A) must be used. Connect it to both the Multimeter and the Selector, as it's shown in the hereunder picture. Test Cable's Safety Plugs 4 and 5 must be connected to the Multimeter set to Ohmic () Values reading.
3b2)
· Starting from the "0" (OFF) position of setting, rotate step-by-step the Selector's shaft in clockwise sense, and verify that the Ohmic Values displayed by the Multimeter correspond to the ones listed in the Chart at P. 7.
IMPORTANT: Ohmic Values of NOT MOTORIZED Selectors by ROLD are exactly same as the ones of the MOTORIZED Selectors by INVENSYS.
CHECK FOR CONFIRMATION THE RESUMING CHART AT P. 7
3 4
5
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4) FUNCTIONAL CHECK OF POTENTIOMETERS:
4a)
FUNCTIONAL CHECK OF 8 POSITIONS 41010932 and P/N. 41000769 )
POTENTIOMETERS
(P/N.
· The Potentiometers with 8 Positions of Setting, are used on all electronically controlled Washing machines, for the selection of the following parameters; Water Temperature, Spin Speed Spin and Start Delay Time. Each single available positon of setting corresponds to a single and specific Ohmic Value of Resistance (). These values are read by the Cuore Control Module, same as it happens for the Programs Selectors. · Use to carry out this check the GIAS Test Cable P/N. 49009657 (see picture at next P.). Printed Track Printed Track
INFORMATION: should a Potentiometer be OPEN or SHORT CIRCUITED, the Washing Machine's troubles could be somewhat as follows: · SHORT CIRCUITED POTENTIOMETER: THE CONTROLLED WASHING PARAMETER IS CARRIED OUT AT THE MAXIMUM AVAILABLE VALUE, notwithstanding what was the value set by the user.
(Examples: should the "temperature" potentiometer be set at 30°C, THE WATER WILL NEVERTHELESS BE HEATED UNTIL 90°C, likewise should the "spin speed" potentiometer be set to 400 RPM, the spin will be carried out at the maximum speed available).
·
OPEN CIRCUITED POTENTIOMETER: THE CONTROLLED WASHING PARAMETER IS ZEROED, notwithstanding what was the value set by the user.
(Examples: should the "temperature" potentiometer be set at 50°C, the water will NOT BE HEATED (COLD WASHING), likewise should the "spin speed" potentiometer be set to 600 RPM, the spin will be excluded (NO SPIN CYCLE).
PLEASE REMEMBER TO ALWAYS CHECK BOTH THE CONNECTORS AND THE WIRING
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"FUNCTIONAL CHECK OF POTENTIOMETERS" - Set Multimeter to Ohmic Values () reading. Connect GIAS Test Cable Safety Plugs "3" and "5" to the Multimeter. - Rotate the Potentiometer's Shaft step-by-step in clockwise sense and compare the displayed Ohmic Values () with the ones in the chart.
GIAS TEST CABLE
P/N. 49009657
C
5 3
Potentiometer's Ohmic Values resuming chart:
Position 0 1 2 3 4 5 6 7 RM - RG
Values -
K
Water Temperature
Heater is OFF
Spin Speed NO SPIN MINIMUM SPIN
~ 102,6 ~ ~ ~ ~ ~ ~ ~ 40,7 18,7 12,6 6,6 4,0 2,0 0,3
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30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C
INTERMEDIATE SPIN SPEEDS
MAXIMUM SPIN 11
5)
FUNCTIONAL CHECK OF THE "NTC" TEMPERATURE SENSING PROBES:
WATER TEMPERATURE NTC READING SENSORS (P/N. 92743616, 91201325, 41020334, 41022107).
These components are used on all Electronically Controlled Washing Machines equipped with a Cuore Control Module. They are located in the back part of the appliance's tank, in the same position where the sensible element of the previous thermostats was found. The NTC Sensors now used can be equipped with both conventional AMP male connectors and a special electronic type connector. In this last case, use for the check the GIAS Test Cable P/N. 49009657 (see ATTACHMENT A).
Temperature Ohmic Values
NTC Sensor with AMP leads
(°C)
25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
()
19500 15760 12825 10506 8660 7181 5989 5022 4233 3586 3053 2610 2242 1933 1674
NTC Sensor with electronic type connector
DRYING AIR TEMPERATURE NTC READING SENSOR (P/N. 41013142).
This NTC Sensor s fitted onto the Drying Heaters Container, on top of tank of our Wash & Dryers. The check of this Sensor is done by connecting the Ammeter's Test Leads to its AMP male connectors. Ohmic Values should be as in chart herebelow:
Temperature Ohmic Values
(°C)
()
25 140
12
~ 48500 ~ 1044
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NTC Sensor for Drying
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6)
FUNCTIONAL CHECK OF PRESSURE SWITCHES (OR "PRESSOSTATS"):
Pressostats are used to manage the amount of water loaded by the machine. On our present range of Candy designed Washing Machines and Wash & Dryers, are only used 2 levels pressostats, with similar technical features but different regulations, depending on the type and capacity of the Machine. The position and number of male AMP connectors can be different as well, depending on the maker.
Connecting Hose
Connecting Hose
WM Pressostat Version "1"
WM Pressostat Version "2"
WARNING: IN NO CASE THE ORIGINAL ADJUSTMENT OF THE ORIGINALLY FITTED OR OF THE SPARE PRESSURE SWITCH, CAN BE MODIFIED OR ADAPTED TO SUIT ANY SPECIFIC REQUEST OF THE CUSTOMER. NOR A DIFFERENT PRESSOSTAT THAN THE ONE ON THE GIASTECH SPARES LIST OF THE MACHINE CAN BE USED, WITHOUT AN OFFICIAL AUTHORIZATION BY GIAS ITALY. MISHANDLING OF PRESSOSTAT NULLIFIES THE WARRANTY AND FREES CANDY GROUP FROM ANY LEGAL LIABILITY ABOUT RELATED CLAIMS.
Possible checks to be carried out on Pressostats, are as follows: CHECK OF THE ELECTRIC CONNECTIONS: location and numbering of Pressostat's contacts may differ, due to different makers. The presently found configurations are the two shown in the pictures at the next P.. Please always see the related GIASTECH wiring diagrams, in any case of doubts on the propriety of the electric connections to the pressostat.
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Contact's Location on Version 1
Contact's Location on Version 2
1
2
4
3
1
4
3
2
READING KEY OF PRESSOSTAT'S CONTACTS: Contact 1 : "COMMON" CONTACT Contact 2 : "EMPTY TANK CONTACT" Contact 3 : "FULL TANK CONTACT" Contact 4 : "ANTI-FLOOD CONTACT" (Not used) (1st Level) (2nd Level)
1
PRESSOSTAT'S BENCH TESTING:
Set Multimeter on Continuity Check (with buzzer):
1-2
2
(Closed
Circuit)
1-3 1-4
(Opened Circuit) (Opened Circuit)
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7)
FUNCTIONAL CHECK OF THE VOLTMETRIC DOOR LOCK SAFETY DEVICES:
The Door Lock Safety Devices is present in compliance with all the approvals, on every Washing Machine and Wash & Dryer. It prevents the opening of the Appliance's door as soon as the washing cycle is started. Once the washing cycle has ended (or once it's manually halted by the User), the Door Lock Safety Device holds the door closed for a couple of additional minutes, due to a designed opening delay. This because the Door Lock Safety Device works with a PTC component (Positive Thermal Coefficient), that soon becomes overheated as soon as it's crossed by the network voltage, but needs a couple of minutes to cool down, once it's powered OFF. The PTC's overheating causes the deformation of a bi-metal that pushes out the locking device, engaging it. The locking device stays engaged as long as the PTC is fed and will release the door's catch only when the bi-metal pushing it goes back to its original shape, once the PTC has completely cooled down:
POSSIBLE CHECKS ON DOOR LOCK SAFETY DEVICE:
· VISUAL CHECK: check the Door Lock Safety Device doesn't show any overheating or burning traces. Manually move the moving parts, to confirm they're free. · CHECK OF THE PTC COMPONENT: being the Door Lock Safety Device unplugged, measure the Ohmic value at his AMP Connectors. It must be near the values declared in the following boxes, being the values different depending on the type and make of the Device. · FUNCTIONAL CHECK: manually "load" the Door Lock Safety Device with the help of a scre driver (to put it in operative conditions). Feed the Device with network current for about a minute (feeding contacts change, depending on the type and make). Power it OFF and within 30 seconds chech that the circuit between the "working" contacts is closed. See boxes hereafter, for the identification of the feeding and working contacts of the Door Lock Safety Device.
DOOR LATCH
AMP CONN.
VOLTMETRIC DOOR LOCK DEVICE Used on Front Loaders with Door Opening Button on the control panel. This device is fitted BEHIND THE DOOR BUTTON. Once the Device is fed, the Door Latch is pushed outwards and blocks the Door Catch. Ohmic Value (at 25°C) :
~ 8000
P/N. 92129592 RM - RG
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Electrically feed and visually check that the latch goes out from the Device.
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VOLTMETRIC DOOR LOCK DEVICE
P/N. 91201208
This type is used on the Front Loaders with Door Opening Handle. Once it's fed by network tension at his contacts 1 3, an inner latch protrudes and mechanically blocks the Door's catch. Symultaneously, an inner mechanism closes its electric contacts 1 - 2.
2
NOT FED: Ohmic Value measured between leads 1 3 at 25°C is within 500 and 1500 . OPENED CIRCUIT between contacts 1 and 2. FED: Electrically feed the Device with network tension, between contacts 1 and 2 for 2 minutes. Power OFF and check within 30 seconds the CLOSED CIRCUIT between contacts 1 and 2.
3 1
VOLTMETRIC DOOR LOCK DEVICE
P/N. 90489300
1 3
This type is for Front Loaders with Door Opening Button and Bowden cable. Once it's fed by network tension at his contacts 1 3, an inner latch protrudes and mechanically blocks the Door's catch. Simultaneously, an inner mechanism closes its electric contacts 1 - 2.
2
NOT FED: Ohmic Value measured between leads 1 3 at 25°C is within 500 and 1500 . OPENED CIRCUIT between contacts 1 and 2. FED: Electrically feed the Device with network tension, between contacts 1 and 3 for 2 minutes. Power OFF and check within 30 seconds the CLOSED CIRCUIT between contacts 1 and 2.
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P/N. 80049349
VOLTMETRIC DOOR LOCK DEVICE This type is for Top Loaders. Once it's fed by network tension at his contacts 3 5, an inner latch protrudes and mechanically blocks the Door's catch. Symultaneously, an inner mechanism closes its electric contacts 4 - 5.
NOT FED: Ohmic Value measured between leads 3 5 at 25°C is within 800 and 1200 . OPENED CIRCUIT between contacts 5 and 4. FED: Electrically feed the Device with network tension, between contacts 3 and 5 for 2 minutes. Power OFF and check within 30 seconds the CLOSED CIRCUIT between contacts 4 and 5.
VOLTMETRIC DOOR LOCK DEVICE
P/N. 80049349
3 5 4
This type is for Top Loaders. Once it's fed by network tension at his contacts 3 5, an inner latch protrudes and mechanically blocks the Door's catch. Simultaneously, an inner mechanism closes its electric contacts 4 - 5.
NOT FED: Ohmic Value measured between leads 3 5 at 25°C is within 800 and 1200 . OPENED CIRCUIT between contacts 5 and 4. FED: Electrically feed the Device with network tension, between contacts 3 and 5 for 2 minutes. Power OFF and check within 30 seconds the CLOSED CIRCUIT between contacts 4 and 5. This Door Lock Safety Device is perfectly interchangeable with the previously shown Door Lock Safety Device P/N. 80049349.
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8) VISUAL CHECK OF THE THE CUORE CONTROL MODULES:
Cuore Control Module by MDL Versions:24K and 32K
IMPORTANT
The number of contacts in the K7 connector identifies the version of the Module:
12 Contacts "24K" 16 Contacts "32K"
K7
WARNING: Should Resistance "R8" be found burned, check the conditions of both the component TR4 and of the DOOR LOCK SAFETY DEVICE.
Component
Controlled Electromechanical Component
TR1 TR2 TR3 TR4 TR5 TR6 TR7 R8
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Synchronous Motor With Brushes & Commutator Hot Water Fill Solenoid Valve Cold Water Fill Solenoid Valve Door Lock Safety Device Drain Pump Recycling Pump Selector of Washing Programs Resistance protecting TR4 (Door Lock Safety)
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Cuore Control Module by MDL
Version: 48K
If the "R8" Resistance should be spoiled, check visually the conditions of the Door Lock controlling component and of Door Lock itself.
Tachometric Coil Tracks NTC Probe Tracks
Recycling Pump Cold Water Fill Solenoid Valve
Resistance protecting the components circled by the dotted blue line.
Hot Water Fill Solenoid Valve
Cold Water Fill Solenoid Valve
Drain Pump
Door Lock Safety Device
Washing Programs Selector Washing Programs Selector Tracks
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Three-phase Cuore Control Module by MDL - Version: 32K
IMPORTANT Resistance "G" protects the "F" component, dedicated to the Door Lock Safety Device.
Component
Controlled Electromechanical Component Recycling Pump or Cold Water Fill Solenoid Valve Hot Water Fill Solenoid Valve Cold Water Fill Solenoid Valve Drain Pump Ic IGBT Control of Three-phase Motor Door Lock Safety Device Resistance protecting the Door Lock Device circuit Washing Programs Selector Jumper contacts bridge for Errors reading Relais Water heating Element 6.3 A Fuse (retarded) Board's General Protection Capacitor Three-phase Motor
A B C D E F G H I L M N
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Cuore Control Module by "INVENSYS" Versions: 32K and 64K
Component
TC1 TC2 TC3 TC4 TC5 TC6 TC7 TC8 KL1 KL2 KL3 KL4 SCU1
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This type of Cuore Control was used in production since date 0623
Controlled Electromechanical Component Synchronous Motor With Brushes & Commutator Door Lock safety Device Drain Pump Recycling Pump Drum Braking Device (Top Loaders only) Cold Water Fill Solenoid Valve (Pre-wash) Cold Water Fill Solenoid Valve (Washing) HOT Water Fill Solenoid Valve (Washing) Reversal of Motor's Rotation Sense Tapped Field Winding (Some Motors Only) Relays Water Heating Element Eeprom Memory (Programs Files)
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Cuore Control Module by MDL with integrated Drying Module
Versions: 32k and 48K
K6 IMPORTANT If the "R8" Resistance should be spoiled, check visually the conditions of
R8
Door Lock controlling component and of Door Lock itself.
Component
Controlled Electromechanical Component Synchronous Motor with Brushes and Commutator HOT Water Fill Solenoid Valve (Washing) COLD Water Fill Solenoid Valve (Washing) Door Lock Safety Device Drain Pump COLD Water Fill Solenoid Valve (Pre-wash) Washing Programs Selector Vapor Condensation Water Solenoid Valve and Ventilator for Drying Relays Water heating Element Relays Motor's Reversals Relays Motor's Reversals Tapped Field Motor's Winding (Some Motors) Relays Strong Drying Heating Element 4A Relays Drying Heating Element 2A
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TR1 TR2 TR3 TR4 TR5 TR6 TR7 TR8 RL1 RL2 RL3 RL4 RL5 RL6
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9) VARIOUS WASHING MACHINES MOTORS AND THEIR BENCH TESTING
These are the different Motors presently used on the Candy design Washing machines: · · · · INDUCTION MOTORS (see par. 9a and 9b) SYNCHRONOUS MOTORS WITH BRUSHES AND COMMUTATOR (see par. 9c) THREE-PHASE MOTORS (see par. 9d) CONTINUOUS CURRENT COMMUTATOR MOTORS (see par. 9e)
Possible checks to be carried out on the Tachometric Dynamo, are listed in par. 9f
9a)
INDUCTION MOTORS
These motors are presently used only for the electromechanically controlled Washing Machine (with traditional TIMER). Induction motors feature two separate windings, each one with a different number of poles. This means that different speed of rotation can be obtained, by separately feeding the separate windings (washing winding and spin winding). The inversion of the sense of rotation is obtained by changing the feeding circuit of the washing winding and with the help of a start capacitor.
TERMINAL BOX "TYPE A"
UPPER LEADS
"TYPE A"
SPIN COMMON WASHING
TERMINAL BOX "TYPE B"
WASHING "TYPE B"
FRONT LEADS
COMMON SPIN
"TYPE A" MOTORS HAVE THE TERMINAL BOX LEADS POINTING UPWARDS. "TYPE B" MOTORS HAVE THE TERMINAL BOX LEADS POINTING FRONTWARDS. In the following P. we resume the procedures to carry out the bench testing of both versions of Induction Motors. IMPORTANT: To be bench tested, each Induction Motor needs it's original Start Capacitor. Please find the Capacitor's parts numbers on the related GIASTECH spares lists.
NOTE
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Bench Test of INDUCTION MOTOR with TYPE "A" junction box:
WASHING CLOCKWISE SENSE WASHING - COUNTERCLOCKWISE
~ AC
~ AC
CAPACITOR
CAPACITOR
SPINNING
CAPACITOR
~ AC
IMPORTANT: To be bench tested, each Induction Motor needs Start it's original Capacitor. Please find the Capacitor's part number on the related GIASTECH spares lists.
Bench Test of INDUCTION MOTOR with TYPE "B" junction box:
WASHING CLOCKWISE SENSE WASHING - COUNTERCLOCKWISE
CAPACITOR
CAPACITOR
~ AC
~ AC
ROTAZIONE "CENTRIFUGA"
~ AC
CAPACITOR
IMPORTANT: To be bench tested, each Induction Motor needs Start it's original Capacitor. Please find the Capacitor's part number on the related GIASTECH spares lists.
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9b)
INDUCTION MOTORS WITH TACHOMETRIC DYNAMO:
This type of Motor was uniquely used to power some few models of Top Loaders. It's a SINGLE-PHASE ASYNCHRONOUS MOTOR, equipped with two separate windings, each one bearing a different number of poles. Each separate winding is coupled to a specific START CAPACITOR. This Motor is equipped with a TACHOMETRIC DYNAMO as well, with a permanent magnet rotor and coaxial to the Motor's shaft. This type of Motor is controlled by an ELECTRONIC MODULE, that reads the output signal from the Tachometric Dynamo in order to manage the Motor's speed of revolution and the Appliance Anti-unbalancement function too. Here follows the bench testing procedure:
Terminal Box
Terminal Box Diagram
Contacts Contacts Contacts Contacts Contacts Contacts
N° N° N° N° N° N°
9 8 7 6 4 2
10 -5 -3 -1
: TOC (internal thermal overheating control) : Common Lead : (NOT USED - EMPTY) : 2 Poles Winding (Spin) : 12 Poles Winding (washing) : Tachometric dinamo (Ohmic Value: ~ 30 )
SPIN
WASHING
(Clockwise) AC
(Counterclockwise)
WASHING
AC
AC
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9c) SYNCHRONOUS MOTOR WITH BRUSHES & COMMUTATOR:
This Motors are mostly used on Electronically Controlled (Cuore Control Module) Washing Machines. It features only one winding and a TACHOMETRIC DYNAMO, coaxial to the Motor's shaft. The value of the frequency of the AC current generated by the Tachometric Dynamo, is understood by the Cuore Control Module as the value of the speed of rotation of the Motor. Moreover, whatever strain in generating the correct value of frequency in time, is understood as an unbalancement of the drum. The reversal of the sense of rotation of the Motor, is controlled by the Cuore Module through two dedicated relays. Hereunder are the instructions for the bench testing of these Motors: IMPORTANT: to perform the different speeds of rotation, each Commutator Motor needs a specifically dedicated software, loaded into the Eeprom memory of the related Cuore Control Module. Therefore, when bench tested the Commutator Motor can only be run at the maximum speed. Do not feed it for more than 30 seconds, not to exceed "RPM Max" for the specific motor.
Commutator Motor by "CESET"
Terminal Box:
TYPE C or TYPE D
Carbon Brush and Holder assy:
P/N. 92126721 (2 pcs.)
Noise Damper Foam Cover:
P/N. 92955111
Tacho Coil Ohmic Value: Between Leads
4 5 : ~ 42
Commutator Motor by "SOLE - ACC"
Terminal Box:
TYPE C or TYPE D
Carbon Brush and Holder assy:
P/N. 49000466 (2 pcs.)
Noise Damper Foam Cover:
P/N. 41002482
Tacho Coil Ohmic Value: Between Leads
4 - 5 : ~ 184
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Commutator Motor by "ATB - SELNI"
Terminal Box:
TYPE E
Carbon Brush and Holder assy:
P/N. 49008106 (2 pcs.)
Tacho Coil Ohmic Value: Between Leads
4 5 : ~ 90
Commutator Motor by "HOOVER"
Terminal Box:
TYPE C
Carbon Brush and Holder assy:
P/N. 91212332 (1 pcs.)
Noise Damper Foam Cover:
P/N. 92955111
Tacho Coil Ohmic Value: Between Leads
4 - 5 : ~ 156
IMPORTANT: For Bench Testing, carefully identify the type of Terminal Box. Detach the connector of the Washing Machine's wiring and do not feed for more than 30 seconds.
Terminal Box "TYPE C" (7 Positions NO Tapped Field Winding) "Stator" Contacts 3 7 "Rotor" Contacts 2 6 "Tacho Dynamo" Contacts 4 5 Contact 1: empty
JUMPER WIRE
High Speed Rotation
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Terminal Box "TYPE D" (7 Positions WITH Tapped Field Winding) "Rotor" Contacts 2 6 "Stator - Normal" Contacts 3 7 "Stator High" Contacts 1 7 "Tacho Dinamo" Contacts 4 5
JUMPER WIRE
Normal Speed Rotation
High Speed Rotation
Tapped Field Winding Bench Testing
JUMPER WIRE
Terminal Box "TYPE E" (8 Positions NO Tapped Field Winding) "Rotor" Contacts 2 6 "Stator - Normal" Contacts 3 7 "Tacho Dinamo" Contacts 4 5 Contact 1 & 8: empty
High Speed Rotation
JUMPER WIRE
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9d)
THREE-PHASE MOTORS:
These Motors are mainly fitted onto Electronically Controlled Top-of-the-Range Washing Machines. It's equipped with three separate windings and CANNOT WORK IF NOT CONNECTED WITH ITS SPECIFIC CUORE CONTROL MODULE. Therefore, the only possible bench tests on these motors are the measurement of the Ohmic () Values of each winding (top confirm they are not open or short circuited) and the measurement of the Ohmic () Value of the TACHOMETRIC DYNAMO. Being without carbon brushes, these motors are very silent; moreover, they give better general performances than the Commutator ones. Three-phase Motors can be 2 or 4 poles and this data is found on the Motor's serial label.
NOTE: The Diagrams of The Terminal Boxes with the identification of the numbers of the leads AMP terminals, can be found at P. 31 and P. 32.
Three-phase Motor 4 Poles - by "SOLE-ACC"
P/N. 41006030
Omic Values of Windings (star connected) at 20°C room temp.
Between Leads
4 - 5 : ~ 2,6 Between Leads 5 - 6 : ~ 2,6 Between Leads 6 - 4 : ~ 2,6
Ohmic Value of Tacho Coil:
Between Leads
2 - 3 : ~ 184
Three-phase Motor 2 Poles - by "SOLE-ACC"
P/N. 41016424 - 41016661
Omic Values of Windings (triangle connected) at 20°C room temp.
Between Leads
4 - 5 : ~ 5,4 Between Leads 5 - 6 : ~ 5,4 Between Leads 6 - 4 : ~ 5,4
Ohmic Value of Tacho Coil:
Between Leads
2 - 3 : ~ 184
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Three-phase Motor
2 Poles - by "CESET" Stator Width: 55 mm P/N. 41023825
Omic Values of Windings at 20°C room temp.
Between Leads
4 - 5 : ~ 3,9 Between Leads 5 - 6 : ~ 3,9 Between Leads 6 - 4 : ~ 3,9
Ohmic Value of Tacho Coil:
Between Leads
2 - 3 : ~ 116
Three-phase Motor
2 Poles - by "CESET" Stator Width: 50 mm P/N. 41024361 - 41024362
Omic Values of Windings at 20°C room temp.
Between Leads
4 - 5 : ~ 4,8 Between Leads 5 - 6 : ~ 4,8 Between Leads 6 - 4 : ~ 4,8
Ohmic Value of Tacho Coil:
Between Leads
2 - 3 : ~ 116
IMPORTANT
To carry out the bench testing of the Three-phase Motors, GIAS has made available the special Test Cable P/N. 49010012 (see Attachment 2), equipped with a suitable connector for the Motro's Terminal Box and Safety Plugs for the connection to the Multimeter. ONLY TEST AVAILABLE IS THE MEASUREMENT OF THE OHMIC VALUES OF THE THREE MOTOR'S WINDINGS.
DO NOT ELECTRICALLY FEED THE MOTOR IN ANY CASE!!!
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Three-phase Motor Terminal Box Diagram "SOLE ACC" make.
WARNING !!! Do Not Electrically Feed the Motor With Network Tension!!!!!!
Tachometric Dinamo Coil Winding
Motor's Windings
Ground Connection
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Three-phase Motor Terminal Box Diagram - "CESET" make.
WARNING !!! Do Not Electrically Feed the Motor With Network Tension!!!!!!
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9e) DIRECT CURRENT COMMUTATOR MOTORS:
This type of Motors are mainly used on Electronically Controlled Top-Of-The-Range Washing machines and it's most similar to a conventional Commutator Motor. To work, it needs 2 Electronic Control Modules: a specifically dedicated Cuore Control Module and a Current Rectifier Module, usually fitted in the back lower part of the Appliance's cabinet and including a "Bridge" of diodes. These Motors are equipped with a Tachometric Dynamo as well. Their Terminal Box usually features 10 leads in line, out of which the contacts number 8 and 9 are for the internal TOC (bi-metal), connected in series with one of the two phases of the mains.
Continuous Current Motor P/N. 41002726
by "SOLE ACC"
Terminal Box : TYPE F Carbon Brush and Holder Assy P/N. 49000466 (2 pcs.)
Tachometric Coil Ohmic Value Between Leads
4 - 5 : ~ 184
Hereunder follow the indications on how to carry out the bench testing of these motors:
Terminal Box "TYPE F" (10 Positions - WITH Tapped Field) "Rotor" Contacts 2 6 "Stator Normal Speed" Contacts 3 7 "Stator High Speed" Contacts 1 7 "Tacho Dynamo" Contacts 4 5 "TOC Safety Th." Contacts 8 9
TOC Check
N.C. Check Continuity with Multimeter between Leads 8 and 9: MUST BE CONTINUITY (Normally Closed)
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Terminal Box "TYPE F" (10 Positions - WITH Tapped Field) "Rotor" Contacts 2 6 "Stator Normal Speed" Contacts 3 7 "Stator High Speed" Contacts 1 7 "Tacho Dynamo" Contacts 4 5 "TOC Safety Th." Contacts 8 9
Testing the NORMAL SPEED
230V/AC 50Hz
JUMPER WIRE
Testing the HIGH SPEED
While feeding the Motor for the High Speed Rotation, it's being used its Tapped Field Winding.
230V/AC 50Hz
JUMPER WIRE
Two different Current Rectifier Modules are presently used by Candy for these Motors and they are not interchangeable between them: · · Current Rectifier Module P/N. 41005897 (Cuore Module by MDL) Current Rectifier Module P/N. 41021535 (Cuore Module by INVENSYS) PLEASE BE CAREFUL TO COUPLE TO EACH CONTINUOUS CURRENT COMMUTATOR MOTOR THE RELATED SPECIFIC CUORE CONTROL MODULE AND RECTIFIER CONTROL MODULE, BY PICKING THEIR CORRECT PART NUMBERS FROM THE SPECIFICALLY RELATED SPARE PARTS LISTS OF THE GIASTECH WEB SITE.
Hereafter follows the description of the Bench Testing Procedures for the Continuous Current Commutator Motors:
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Current Rectifier Module for Cuore Board by MDL: P/N. 41005897
Connector Type: 4 Contacts
1
2
3
4
Unplug the Washing Machine, remove the Current Rectifier Module from its housing and visually check its good conditions.
4 A B 3 D 2 C 1
1
2
3
4
Set Multimeter in the OHMMETER mode · · Between points Between points
() and check that:
A and B the Ohmic Value is within 90 100 C and 1 the Ohmic Value is about: 0,4 ( ) and check that:
Set Multimeter in the DIODES METER mode Between points Between points Between points
2 and D it's conductivity 2 and 3 it's conductivity D and 4 it's conductivity
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WARNING: if no conductivity is found on the diodes (current not passing through) just reverse the position of the DIODE METER Test Leads.
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Current Rectifier Module for Cuore Board by INVENSYS: P/N. 41021535
Connector Type: 6 Contacts
1
2
3
4
5
6
Unplug the Washing Machine, remove the Current Rectifier Module from its housing and visually check its good conditions.
A
C
1 2 3 4 5 6
B
1
() and check that:
Set Multimeter in the OHMMETER mode · · Between points Between points
A and B the Ohmic Value is within 140 150 C and 1 the Ohmic Value is about: 0,3 ( ) and check that:
Set Multimeter in the DIODES METER mode Between points Between points Between points
2 and 6 it's conductivity 2 and 1 it's conductivity 1 and 4 it's conductivity
WARNING: if no conductivity is found on the diodes (current not passing through) just reverse the position of the DIODE METER Test Leads.
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9f) CHECKS ON THE TACHOMETRIC DYNAMO:
The Tachometric Dynamo is used by the Cuore Control Module, to manage the speed of rotation of the Motor and to keep under control the unbalancement of the drum.
IMPORTANT
The Coil of the Tachometric Dynamo is connected to the Appliance's wiring through the Motor's Terminal Box. Contacts are 4 5 in case of INDUCTION or COMMUTATOR MOTORS and 2 3 in case of THREE-PHASE MOTORS. TACHOMETRIC DYNAMO
CHECKING THE OHMIC VALUE () OF TACHO'S COIL: remove the Appliance's wiring connector from the Motor's Terminal Box and connect the OHMMETER to contacts 4 5 (or 2 3 in case of Three-phase Motor). The Ohmic Value of the winding of the Coil of the Tachometric Dynamo is different, depending on the type of the Motor (see data in par. 9b, 9c, 9d, 9e) CHECKING THE MAGNETIC ROTOR OF THE TACHOMETRIC DYNAMO: being OHMMETER connected to the Motor as previously, manually turn the shaft of Motor. If the Ohmic value displayed by the OHMMETER changes, this means Rotor is correctly working. If on the contrary the Ohmic Value stays unchanged, Rotor is defective. the the the the
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ATTACHMENT 1 GIAS TEST CABLES: TEST CABLE FOR CHECKING MOTORIZED SELECTORS: P/N. 49009656
Detailed check are fully described in Chapter 3.
ON-OFF GENERAL MICROSWITCH
GIAS TEST CABLE SELECTOR'S SHAFT
1
7
P/N. 49009656
5
4 3
LEGENDA: · "ON-OFF" Contacts: use to set the Selector on Position "0". With MULTIMETER connected to these leads in CONTINUITY measurement mode, the "0" position is the only OPEN CIRCUITED one. · Connectors 3 4 5: Safety Plugs Connectors, to safely connect the TEST CABLE to the MULTIMETER, to carry out all possible measurements. (See Chapter 3) · AMP Connectors 1 and 7: to perform the reading of the Ohmic Value of Motor's coil (MDL = ~13K, INVENSYS = ~6.4KG) and to feed the Selector's Motor with network tension.
MULTIMETER'S SAFETY PLUGS
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TEST CABLE FOR CHECKING NON MOTORIZED SELECTORS, POTENTIOMETERS, NTC PROBES, SOLENOID VALVES: P/N. 49009657
Functional Check of POTENTIOMETERS
POTENTIOMETER
(8 POSITIONS)
(8 Positions)
Connect the TEST CABLE P/N. 49009657 to the connector of potentiometer and carry out the reading of all Ohmic () Values in each position of setting. Connect to MULTIMETER through SAFETY PLUGS 3 and
5
3
5
(See P. 11)
Functional Check of
ON-OFF Microswitch
NON MOTORIZED SELECTORS
(12,16,22 Posizioni)
Connect the TEST CABLE P/N. 49009657 to the connector of potentiometer and carry out the reading of all Ohmic () Values in each position of setting. Connect to MULTIMETER through SAFETY PLUGS 4 and
NON MOTORIZED PROGRAMS SELECTOR
5 4 3
5
(See P. 7)
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Functional Check of NTC SENSORS
NTC TEMPERATURE PROBE (CONNECTOR)
(WITH CONNECTOR)
Check the temperature of the probe with a precise electronic thermometer. Connect the TEST CABLE P/N. 49009657 to the sensor and read its Ohmic () Value with a DIGITAL MULTIMETER connected to SAFETY PLUGS 3 and 5. () values chart at P. 12.
5 3
B
A
Functional Check of DOUBLE SOLENOID VALVE
(WITH CONNECTORS)
Connect the TEST CABLE P/N. 49009657 to the connector of each SOLENOID VALVE (A or B). Connect the TEST CABLE P/N. 49009657 to a MULTIMETER through its SAFETY PLUGS 3 and
5
5.
3
Ohmic Value of Solenoid's Coil= ~3,4 K at 20°C)
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ATTACHMENT B TEST CABLES FOR MOTORS BENCH TESTING: (See Chapter 9)
P/N. 49010010
GIAS TEST CABLE FOR
Commutator Motors Terminal Box TYPE C/D
Valid for all types of Motors, with and without Tapped Field. YELLOW Safety Plugs are to Tachometric Dynamo.
P/N. 49010012
GIAS TEST CABLE FOR
Three-phase Motors
YELLOW Safety Plugs are to Tachometric Dynamo. WARNING: DO NOT FEED THE MOTOR WITH ANY NETWORK TENSION. ONLY CHECK OHMIC VALUES OF WINDINGS.
P/N. 49010014
GIAS TEST CABLE FOR
Direct Current Commutator Motors Terminal Box TYPE F
YELLOW Safety Plugs are to Tachometric Dynamo.
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P/N. 49010016
Single Pole jumper wire, to connect when needed the contacts 2 and 3 of the Motor's Terminal Box.
FOR ALL TYPES OF MOTORS, THREE-PHASE EXCLUDED.
P/N. 49010017
Single Pole Round Connector, to be fitted onto whatever MAINS CABLE WITH SCHUKO PLUG, in order to feed the Motor.
FOR ALL TYPES OF MOTORS, THREE-PHASE EXCLUDED. 2 pieces needed (phase + neutral)
DO NOT FORGET TO CONNECT TO THE MOTOR'S GROUND LEAD THE EARTH WIRE OF THE MAINS CABLE.
WARNING
FOR BETTER SAFETY ALWAYS CONNECT TO THE MAINS THROUGH THE GIAS PATCH EXTENSION P/N. 91941051. DO NOT FORGET THAT ALL BENCH TESTS UNDER CURRENT MUST HAVE A VALID EARTH CONNECTION.
P/N. 49010277
Couple of Multimeter's Test Leads with Safety Plugs, with special rounded terminal points (under removable insulating cover) for the easy insertion in every rounded female socket (i.e. motor terminal box). These Multimeter Test Leads are standard equipment of Patch Cord P/N. 91941051
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INDEX OF CONTENTS:
CHAPTER 1 CHAPTER 2 CHAPTER 3 Par. 3a Par. 3b
: FOREWORD................................................................................... (P. 1) : SUGGESTED TOOLS AND ACCESSORIES.............................. (P. 1) : CHECKING THE PROGRAMS SELECTORS.............................. (P. 2)
: CHECK OF MOTORIZED SELECTORS (16,22,30 positions)............ (P. 2) : CHECK OF NON MOTORIZED SELECTORS (16,22,30 positions).. (P. 8) : FUNCTIONAL CHECK OF POTENTIOMETERS......................... (P. 10) : CHECK OF NTC TEMPERATURE SENSING PROBES.............. (P. 12) : CHECK OF PRESSURE SWITCHES (PRESSOSTATS)............ (P. 13) : CHECK OF DOOR LOCK SAFETY DEVICES............................. (P. 15) : VISUAL CHECK OF CUORE CONTROL MODULES.................. (P. 18) : DIFFERENT TYPES OF MOTORS AND THEIR CHECK........... (P. 23)
CHAPTER 4 CHAPTER 5 CHAPTER 6 CHAPTER 7 CHAPTER 8 CHAPTER 9 Par. 9a Par. 9b Par. 9c Par. 9d Par. 9e Par. 9f
: ASYNCHRONOUS INDUCTION MOTORS.............................................. (P. 23 - 24) : ASYNCHRONOUS INDUCTION MOTORS WITH TACHO DYNAMO.. (P. 25) : SYNCHRONOUS COMMUTATOR MOTORS............................................ (P. 26 - 28) : THREE-PHASE MOTORS.......................................................................... (P. 29 - 32) : CC COMMUTATOR MOTORS................................................................... (P. 33 - 36) : CHECK OF TACHOMETRIC DYNAMO..................................................... (P. 37)
ATTACHMENT A : TEST CABLES FOR COMPONENTS CHECK ......................... (P. 38 - 40) ATTACHMENT B : TEST CABLES FOR MOTORS FUNCTIONAL CHECK........... (P. 41 - 42) Index Of Contents...................................................................................................... (P. 43)
Best regards. GIAS Italy
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