Service manual Tumble dryers T490 Type N90 Compass Control From machine no. 0490/000000 Service manual in original language 487 05 42-9/EN 200.05.28
Contents 3 Contents Safety precautions... 5 Technical data... 7 Description of principal components... 9 Description... 9 Programs - Compass Control... 9 Loading door... 0 Knob operation... 0 Coin drop/card reader... 0 Motor... 0 Periodic maintenance... 9 Functional inspection... 9 Maintenance... 9 Optimizing the air flow... 2 Air flow... 2 Air volume... 2 Adjusting the dryer... 22 Gas installation... 23 Controls... 27 Printed circuit board... 27 Connecting accessory systems... 27 Connection to network/central Panel... 28 Programming... 29 Replacement of PCB... 30 Sensors and overheating thermostats... 33 Overview, inlet air... 33 Inlet air - Overheating thermostat... 34 Inlet air - Thermistor element (PT00 sensor)... 35 Overview, outlet air... 36 Outlet air - Overheating thermostat... 37 Outlet air - Thermistor element (NTC sensor)... 38 Door switch... 39 Loading door switch... 39 Motor and transmission... 4 Motor description... 4 Replacement fan module... 43 Heating... 47 Electric heated dryers... 47 Gas heated dryers... 50 Converting to another type of gas... 54 Gas error... 55 Drum with bearing... 57 Description... 57
4 Contents Cabinet, door reversal... 6 Door reversal... 6 RMC... 63 RMC general... 63 Pressure switch... 65 The manufacturer reserves the right to make changes to design and com ponent specifications.
Safety Precautions 5 Safety Precautions Do not dry unwashed items in the machine The machine is not to be used if industrial chemicals have been used for cleaning. 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. Items that have been soiled with substances such as cooking oil, acetone, alcohol, petrol, kerosene, spot removers, turpentine, waxes and wax removers should be washed in hot water with an extra amount of detergent before being dried in the machine. Items such as foam rubber (latex foam), shower caps, waterproof textiles, rubber backed articles and clothes or pillows fitted with foam rubber pads should not be dried in the machine. Fabric softeners or similar products should be used as specified by the fabric softener instructions. The machine may not be used to dry floor mops that contain polypropylene. The final part of a drying cycle occurs without heat (cool down cycle) to ensure that the items are left at a temperature that ensures that the items will not be damaged. WARNING. Never stop the machine before the end of the drying cycle unless all items are quickly removed and spread out so that the heat is dissipiated. Remove garments from the machine as soon as they are dried. This prevents them from becoming creased and reduces the risk of spontaneous ignition. If the machine develops a fault, this must be reported to the person in charge as soon as possible. This is important both for your safety and that of others. The machine must not be located where a door, sliding door, etc., can block the machine's door The machine is not intended to be used by people (including minors) with reduced physical or mental capacity or lack of experience and knowledge. Such people must be instructed in the use of the machine by a person who has responsibility for their safety. Minors must be supervised to ensure that they do not play with the machine. Adequate ventilation has to be provided to avoid the back flow of gases into the room for appliances burning other fuels, including open fires. Gas heated tumble dryer: The machine is not to be installed in rooms containing cleaning machines with perchloroethylene, TRICHLOROETHYLENE or CHLOROFLUOROCONTAINING HYDROCARBONS as cleaning agents. If you can smell gas, Do not switch on any equipment Do not use electrical switches Do not use telephones in the building Evacuate the room, building or area Contact the person responsible for the machine In order to prevent damage to the electronics (and other parts) that may occur as the result of condensation, the machine should be placed in room temperature for 24 hours before being used for the first time.
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Technical data 7 Technical data - type T490 Heating Electric Gas Drum volume: 90 litres 90 litres Weight net: 03 kg 03 kg Drum: Diameter 680 mm 680 mm Depth 555 mm 555 mm Revolutions per minute 50 rpm 50 rpm Capacity: Factor :25 7.5 kg 7.5 kg Factor :33 5.8 kg 5.8 kg Heat effect: Electric heating: 6.0 kw 6.6 kw 8.0 kw 8.0 kw Air consumption: Heat effect 6.0 kw / 6.6 kw 270 m 3 /h 270 m 3 /h Heat effect 8.0 kw / 8.0 kw 290 m 3 /h 290 m 3 /h Piping: Evacuation Ø 25 Ø 25 Gas piping: ISO 7/ R /2 Pressure drop: Evacuation 6.0 kw / 6.6 kw 380 Pa 380 Pa 8.0 kw / 8.0 kw 350 Pa 350 Pa Sound power level: Lw <68 db (A) <68 db (A)
8 Technical data Technical data - motor specifications Dryer with reversal: Fan motor: Effect 40 W Revolutions per minute: 50 Hz 2660 rpm 60 Hz 2860 rpm Drum motor: Effect 30 W Revolutions per minute: 50 Hz 2730 rpm 60 Hz 3330 rpm
Description of principal components 9 Description Dryer type T490 is available as electric and gas heated.the dryer has a vent into the open air. Programs - Compass Control The dryer has a microprocessor. The microprocessor control has different functions including: Drum reversing for less tangling of large items. Service program for adjustment parameters eg. temperatur, cool-down time. Dryer functions monitoring - errors occurred during the program sequence are registered in the log. Some of the error codes are shown on the display at the same time. RMC (Residual Moisture Control), the dryer stops automatically when the clothes have reached the required residual moisture level. Display Knob operation for program selection Door
0 Description of principal components Loading door Normally the dryer has a right-hinged door. The door is, however, reversible (see section "cabinet, door reversal"). A door switch ensures that the dryer stops automatically if the dryer is opened during the program sequence, see section "door switch". Knob operation Turn and select by using the knob and the following appears: Program selection Start button Language selection Coin drop / card reader The dryer is available with a factory-installed coin drop, a factory-installed card-start system, or it can be prepared for field installation of a card start system. On vending models, insertion of a coin or card buys an owner-programmed drying time. Motor The dryer has two motors, motor operates the blower and motor 2 operates the drum.
Description of principal components. B Connection terminal 200-240V 3AC 2. Ext Connection max.,25a 200-240V AC 3. TR Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Relay (fan) 2 5 0 8 4 7 0 2 6 0 9. Cn X/Y Capacitor 0. RC RC unit 3 9. C Motor operating capacitor 2. F0 Fuse F0A 200-230V AC. B Connection terminal 2. Ext Connection max,25a 230-240V AC 3. TR Transformer 4. K9 Contactor, heat 2 5 4 0 6 5. K4 Contactor, heat 6. RL Relay (door) 2 7 7. F0 Fuse F 6.3 A 8. C Motor operating capacitor 3 9 8 9. Cn X/Y Capacitor 0. RC RC unit
2 Description of principal components. B Connection terminal 2. Ext Connection max,25a 230V AC 3. TR Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 2 5 0 400-480V 3 AC + N 4 7 0 8 6 0 8. K3 Relay (fan) 9. Cn X/Y Capacitor 3 9 0. RC RC unit. C Motor operating capacitor. B Connection terminal 400-480V 3 AC without N 2. Ext Connection max 00 ma 0V AC 5 0 8 0 3. TR Transformer 4 7 0 4. K9 Contactor, heat 5. K4 Contactor, heat 2 6 0 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Contactor (fan) 9. Cn X/Y capacitor 0. RC RC unit 3 9
Description of principal components 3. B Connection terminal 200-240V 3AC 400-45V 3 AC with N 2. Ext Connection max.,25a 200-240V AC 3. TR Transformer 4. K Contactor (drum right) 8 3 5. K2 Contactor (drum left) 6. K3 Relay (fan) 2 7. RC RC unit 8. C Motor operating capacitor (Fan) 7 4 7 6 6 230-240V AC. B Connection terminal 2. Ext Connection max.,25a 200-240V AC 3. TR Transformer 8 9 3 4. K Contactor (drum right) 5. K2 Contactor (drum left) 2 6. K3 Relay (fan) 7. RC RC unit 7 4 8. C2 Motor operating capacitor (fan) 7 5 9. C Motor operating capacitor (drum) 6
4 Description of principal components. B Connection terminal 2. Ext Connection max. 00 ma 0V 3. TR Transformer 400-480V 3 ACwithout N 3 4. K Contactor (drum right) 5. K2 Contactor (drum left) 2 6. K3 Contactor (fan) 7. RC RC unit 7 4 7 5 7 6
Description of principal components 5 From machine No. 490/006772. B Connection terminal 2. Ext Connection max.,25a 200-240V AC 3. T Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Contactor (fan) 9. Cn X/Y Capacitor 0. C Motor operating capacitor (fan). F0 Fuse F0A 2. S2 Air pressure switch 3. A24 Distribution card 230-240V 3AC. B Connection terminal 2. Ext Connection max.,25a 200V AC 3. T Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Contactor (fan) 9. Cn X/Y Capacitor 0. C Motor operationg capacitor (fan). F0 Fuse F0A 2. S2 Air pressure switch 3. A24 Distribution card 200V 3AC
6 Description of principal components. B Connection terminal 2. Ext Connection max.,25a 230-240V AC 3. T Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Contactor (fan) 9. Cn X/Y Capacitor 0. C Motor operating capacitor (fan). F0 Fuse F0A 2. S2 Air pressure switch 3. A24 Distribution card 4. C Motor operating capacitor (drum) 5. Distr. Connectors, heating 230-240V AC. B Connection terminal 2. Ext Connection max.,25a 230V AC 3. T Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Contactor (fan) 9. Cn X/Y Capacitor 0. C Motor operationg capacitor (fan). F0 Fuse F0A 2. S2 Air pressure switch 3. A24 Distribution card 400-45V 3AC+N
Description of principal components 7. B Connection terminal 2. Ext Connection max. 00mA 0 AC 3. T Transformer 4. K9 Contactor, heat 5. K4 Contactor, heat 6. K Contactor (drum right) 7. K2 Contactor (drum left) 8. K3 Contactor (fan) 9. Cn X/Y Capacitor 0. S2 Air pressure switch. A24 Distribution card 400-480V 3AC without N. B Connection terminal 2. Ext Connection max.,25a 200-240V AC 3. T Transformer 4. K Contactor (drum right) 5. K2 Contactor (drum left) 6. K3 Contactor (fan) 7. C Motor operationg capacitor (fan) 8. S2 Air pressure switch 9. A24 Distribution card 200-240V 3AC 400-45V 3AC + N
8 Description of principal components. B Connection terminal 2. Ext Connection max.,25a 200-240V AC 3. T Transformer 4. K Contactor (drum right) 5. K2 Contactor (drum left) 6. K3 Contactor (fan) 7. C Motor operating capacitor (drum) 8. C Motor operating capacitor (fan) 9. S2 Air pressure switch 0. A24 Distribution card 230-240V AC. B Connection terminal 2. Ext Connection max. 00mA 0V 3. T Transformer 4. K Contactor (drum right) 5. K2 Contactor (drum left) 6. K3 Contactor (fan) 7. S2 Air pressure switch 8. A24 Distribution card 400-480V 3AC without N
Periodic maintenance 9 Functional inspection Functional inspection comprises:. Checking the door switch. 2. Test run.. Check the door switch Check whether the safety lock works. The drum must stop when the door is opened. When the door is closed again, the tumbler must not start until the start button is pressed. 2. Test run Check that the fan, drum rotation and heat all stop when the door is opened max. 40 mm. 40 mm Maintenance The following should be carried out at regular intervals, depending on the frequency of use. Daily Check that the drum stops when the door is opened. Check that the lint screen under the door has been cleaned. Use a soft brush or your hand, fig. 2. Check that the lint screen is not damaged. Check that the tumble dryer will not start until the start/stop button has been activated. 2
20 Periodic maintenance Monthly Dryer with RMC In order for the residual humidity control to work in an optimal manner it is important that the lift rolls inside the drum and the glide surfaces for the graphite carbon are cleaned. If these surfaces are not cleaned the automatic residual humidity control can be degraded resulting in the garment being damper than required at the conclusion of the programme. See fig.. Cleaning Wipe off/clean drum and lifters with citric acid (Acidum citricum). If soap/softener residue remains, it is recommended also to use a coarse sponge. Cleaning intervals depend on the operational usage. Cleaning must howeverbe carried out at least once each month. It is recommended that the glide surfaces are cleaned every third to sixth month or as required. See fig. 2. 2 Quarterly/Semi-annually Check that the fresh-air intake at the rear of the tumble is not clogged by lint or blocked in any other way. Check that the filter is not broken. If the filter is defective it needs replacing. At least once a year a skilled expert should check the inside wearing parts of the tumble dryer and clean them of lint. Maintenance The area surrounding the dryer Fresh-air intake to the room Check that the fresh-air intake to the room and the exhaust ducts/pipes from the room are not clogged by lint/dust or blocked in any other way. Dryer area Check that the dryer area is clear and free from combustible materials, gasoline and other flammable vapours and liquids.
Optimizing the air flow 2 Air flow Outlet dimensioning It is important that the dryer has the correct air volume compared to each dryer s effect. If the air flow is below the minimum, the dryer will be forced to switch the heating off thus prolonging the time it will take to dry the load. An air flow above the needed is unnecessary and can result in a cold laundry room and noise from the piping and outlet and in extreme cases prolonged drying time. For brief evacuations and where there are high airflows, the tumble dryer must be adjusted to optimal flow. One way in which this can be done is by using an "Iris valve (a valve specially designed to regulate airflow). Table with air volume and dryer effect Optimum volume Type Effect kw Optimum air volume m 3 /h Corresponding back pressure Pa T490 6,0 270 380 8,0 290 350 Air volume The curves on the next page shows the characteristics of the dryer. By measuring or calculating the back pressure of the outlet pipe it is hereby possible to find the corresponding air flow into the room and through the dryer and exhaust.
22 Optimizing the air flow Adjusting the dryer: Diagram with pressure drop curve type T490. X = Air consumption Y = Back pressure The grey area marks the recommended working area. T490 6 kw T490 8 kw
Optimizing the air flow 23 Gas installation Tables of pressure and adjustments. T490 heat effect: 6 kw Gas type Connection Nozzle Nozzle Air Pressure Pressure Restrictors Denmark LPG 30 30 3 A Norway GNH 20 8.2 2.35 Sweden Finland Italy LPG 28/37 28/37.3 A England GNH 20 8.2 2.35 Spain Portugal Ireland Greece France LPG 28/37 28/37.3 A Belgium GNH 20/25 20/25.95 GNL 20/25 20/25.95 Germany LPG 50 30.3 A GNH 20 8.2 2.35 GNL 20 2. 2.35 Holland LPG 30 30.3 A GNL 25 2. 2.35 Austria LPG 50 30.3 A GNH 20 8.2 2.35 Japan LPG 28 28.3 A Denmark Town gas 8 4.5 3.95 B Sweden Group a Italy Town gas 8 3.5 3.95 B Group b Note Because of the differences in gas installation regulations in European Union it is important to use the Italian-language manual in Italy and the French-language manual in France ect. A B
24 Optimizing the air flow Gas installation Tables of pressure and adjustments. T490 heat effect: 8 kw Gas type Connection Nozzle Nozzle Air Pressure Pressure Restrictors Denmark LPG 30 30.45 A Norway GNH 20 9 2.65 Sweden Finland Italy LPG 28/37 28/37.45 A England GNH 20 9 2.65 Spain Portugal Ireland Greece France LPG 28/37 28/37.45 A Belgium GNH 20/25 20/25 2.2 GNL 20/25 20/25 2.2 Germany LPG 50 30.45 A GNH 20 9 2.65 GNL 20 3.4 2.65 Holland LPG 30 28.8.25 A GNL 25 3.4 2.65 Austria LPG 50 30.25 A GNH 20 9 2.65 Japan LPG 28 28.45 A Denmark Town gas 8 4.5 4.45 C Sweden Group a Italy Town gas 8 3.5 4.45 C Group b Note Because of the differences in gas installation regulations in European Union it is important to use the Italian-language manual in Italy and the French-language manual in France ect. A C
Remember! Circuit boards MUST be protected from static electricity! Always use an earthed wrist strap. Without the antistatic wrapping, the board is unprotected. Keep all items that can cause static discharge (such as plastic bags, fabric, and the like) away from the circuit board. Items like plastic, foam plastic, nylon, or cellophane wrapping are all big generators of static electricity. Static electricity can not be felt, heard or seen till the voltage reaches 2500V. Board components can be damaged by static electricity under 00V.
Controls 27 Printed circuit board The PCB is placed behind the operating panels, fig.. The PCB contains a board with display, indicator lamps. The PCB contains a button A for Switching to Programming mode, See description in Service Manual for Compass Control. The PCB contains a button B for gas reset (Only activated on gas dryer). Connecting accessory systems Different payment systems can be connected to the PCB PCB
28 Controls Connection to network/central Panel Fig.. If several dryers are to be connected to a network/central Panel a bushing for cables shall be installed. See the installation manual enclosed the dryer.. Disconnect the power. 2. Remove the top plate. 3. Pull the cable through the bushing and connect the cable, fig.. 4. The cable can now be installed. 5. After installing mount the top plate again. Network connections External control
Controls 29 Programming To enter the programming mode press service button A. After pressing the service button A the display shows: 0 -- = Group 0. Program the dryer, see Service Manual for Compass Control for programming details. High voltage on the printed circuit board Do not touch the printed circuit board. The shaded areas indicate high voltage. A B
30 Controls Replacement of PCB The PCB is not serviceable. It must be replaced if it fails, see Compass Control service manual. The PCB can be ordered as a spare part. The spare part consists of: Printed circuit board with fuses in anti-static packing and instructions. The PCB Compass Control software is pre-programmed with specific features and may need to be post-programmed after installation. Installation. Disconnect the power supply to the dryer. 2. Remove the top plate to access the defected print board. (See earlier in this section). 3. Remove the defective print board, but keep the 5 nuts for later use. Fig.. 4. Mount the new print board from the kit. 5. Mount the nuts where shown and tighten. Follow the instructions from the kit when programming. Following settings have to be programmed: (see Compass Control Service Manual) Reversing (on or off). (Parameter 5--) Heating type. (Parameter 5--2) Payment settings (Time per coin, standby display value, display flashing). (Parameter 5--3) Panel type. (Parameter 5--4) Program type. (Parameter 5--5)
Controls 3 Service Manual for Compass Control Certain parameters need to be set after installation, according to the characteristics of the dryer and the preferences of the owner. See Service Manual for Compass Control for further details.
Sensors and overheating thermostats 33 Overview, Inlet air Position of sensors and overheating thermostats for inlet air. Fig.. Overheating thermostat and thermistor element, electric heated dryer. On the following pages manual resetting is described.
34 Sensors and overheating thermostats Inlet air - Overheating thermostat Function The inlet overheating thermostat opens in the event of overheating, and shuts off the dryer. The thermostat has to be reset manually. Resetting Electric and gas heated dryer, fig.. Fig.. The overheating thermostat is located behind the back plate of the dryer in the top of the heating unit. In order to reset the thermostat, remove the back plate and press the reset button A on the thermostat. Error code The following error code is related to this section. E08 See Service Manual for Compass Control for more information. A
Sensors and overheating thermostats 35 Inlet air - Thermistor element (PT00 sensor) Function The thermistor element measures the temperature of the heated air entering the drum. The resistance of this device is normally 0 Ohms at 20 C (68 F) and increases as the temperature rises. The signal is returned to the PCB and this ensures that the inlet air does not become excessively hot, thus preventing scorching of garments. Replacement Electric and gas heated dryer, fig.. The element A is located in the top of the heating unit. Fig. Remove the back plate. Element A can now be replaced. Error codes The following error codes are related to this section: E03, E7 See Service Manual for Compass Control for more information. A
36 Sensors and overheating thermostats Overview, Outlet air Positioning sensors and overheating thermostats for outlet air. Fig.. Overheating thermostat and thermistor element, electric and gas heated dryers. On the following pages replacement and manual resetting are described.
Sensors and overheating thermostats 37 Outlet air - Overheating thermostat Function The outlet air overheating thermostat is located in the outlet air flow. The overheating thermostat ensures that the dryer does not overheat during program operation. The thermostat opens automatically and has to be reset manually. Resetting Electric and gas heated dryer, fig.. Fig.. The overheating thermostat is located behind the back plate of the dryer at the bottom and on the right side of the dryer. In order to reset the thermostat, remove the back plate and press the reset button A on the thermostat. Error code The following error code is related to this section. E08 See Service Manual for Compass Control for more information. A
38 Sensors and overheating thermostats Outlet air - Thermistor element (NTC sensor) Function The sensor measures the temperature in the outlet air and the signal is returned to the main circuit board. The main circuit board turns the heating unit off when the outlet air thermistor indicates that the required temperature has been reached. The resistance of this device is normally 4 to 6 kohms at 20 C (68F) and it drops as its temperature increases. The sensor A is mounted on the same plate as the outlet air overheating thermostat. Error codes The following error codes are related to this section. E04, E8 See Service Manual for Compass Control for more information. A
Door switch 39 Loading door switch A switch is placed opposite the door hinges at the door. The switch ensures that the dryer will stop if the loading door is opened during operation. If the dryer does not stop when the loading door is opened, the switch needs replacing. Replacing door switch. Disconnect the power supply from the dryer. 2. Remove the top panel 3. Unplug the plug A and cut the cable ties, fig.. 4. Dismount the bracket with door switch B, fig.. 5. Dismount the defective switch from the bracket and replace it with the new switch 6. Remount bracket with switch. 7. Connect the plug. 8. Re-assemble the dryer 9. Test the new door switch - See Periodic Maintenance, Functional inspection. A B
Motor and transmission 4 Motor description The motor is located in the bottom of the dryer. The drive belt of the drum is connected to the idler mounted next to the motor shaft and a spring keeps the belt tightening constant. Overheating The motor has an integrated overheating thermostat which disconnects the power in case of overheating. Error code E05 will then flash on the display. When the motor cools down the overheating thermostat switches back on automatically. Replacing the motor. Disconnect the power to the dryer. 2. Demount the back plate. 3. Demount the spring. 4. Demount the drive belt. 5. Demount the multiple plug, fig.. 6. Demount the motor by unscrewing the 2 screws, fig. 2. 7. Now replace the complete motor, console and belt wheel. 2 Note! Console, pulley, arm, the small belt and the spring can be replaced separately.
42 Motor and transmission Replacing parts on transmission. Disconnect the power supply from the dryer. B 2. Dismount drum belt and motor. C 3. Fig.. Dismount spring B. 4. Fig.. Dismount transmission belt C. 5. Fig.. Dismount snap ring D, washer and arm with idler. 6. Fig.. Dismount snap ring, washer, bearings and idler on dismounted arm. 7. Fig.. Dismount plastic bearing ring E. 8. Fig. 2. Check that there is no burr on the motor bearing shield F - if necessary remove burr with a file. E 2 D 9. Mount plastic bearing ring E. 0. Mount idler, bearings, washer and snap ring on arm.. Fig. 3. Mount arm G with idler and washer on the motor. 2. Mount snap ring D. 3. Mount transmission belt C. F 4. Fig. 4. Mount new spring. It is important that the spring is mounted in the outer hole. 3 5. Mount the complete motor. 6. Mount drum belt. 7. Assemble the dryer and test it. 8. Check that the belts go correctly around the wheel. G 4 A Note!In order to mount the idler A turn the arm back and forth, lubricate the shaft end with copper grease if necessary. Do not hit or use excessive force on the arm!
Motor and transmission 43 Replacement fan module:. Dismount the power to the dryer. 2. Disconnect motor plug A and the overheating thermostats B, disconnect the NTC sensor C, fig.. 3. Unscrew these two screws on the right side and three screws on the left side of the fan house, fig. 2. 4. Remove the fan house, fig. 3. 5. Unscrew the fan house D and turn fan motor on bottom plate E upside-down, fig. 4. A C B 2 3 4 D E
44 Motor and transmission 6. Dismount the motor. Unscrew the four screws on the bottom plate, fig. 5. 5 Note! Always check the number on the label. The new fan motor label no. has to be identical with the old one. See schedule below, fig. 6+7. 6 7 Spare part numbers Voltage 487 7 03 400-45V 3 AC 50 Hz 400-480V 3 AC 60 Hz 487 04 04 230-240V AC 50/60 Hz 230V 3 AC 50/60 Hz 400-45V 3 N 50 Hz 487 04 05 200V 3 AC 50/60Hz
Motor and transmission 45 Replacement fan module: From machine No: 490/006772. Dismount the power to the dryer. 2. Disconnect motor plug A and the overheating thermostats B, disconnect the NTC sensor C, fig.. Disconnect the pressure hose D from the fan inlet. 3. Unscrew these three screws on the right side and three screws on the left side of the fan house, fig. 2. 4. Remove the fan house, fig. 3. 5. Remove the cover plugs and bushing. Unscrew and remove the fan inlet E. A B D 2 C 3 4 E
46 Motor and transmission 6. Turn fan motor on bottom plate F upside down, fig. 5. Unscrew the five screws G on the bottom plate and dismount the motor. 5 G F Note! Always check the number on the label. The new fan motor label no. has to be identical with the old one. See schedule below, fig. 6+7. 6 7 Spare part numbers Voltage 487 7 03 400-45V 3 AC 50 Hz 400-480V 3 AC 60 Hz 487 04 04 230-240V AC 50/60 Hz 230V 3 AC 50/60 Hz 400-45V 3 N 50 Hz 487 04 05 200V 3 AC 50/60Hz
Heating 47 Electric heated dryers The electric heating element A is located in the bottom of the chimney, fig.. The air is drawn through the louvres on the back plate and on to the heating element. The heated air passes through the garments and the drum vents. Then the air flows from the perforation through the filter and via the outlet into the air. The heating element is switched on by the heating contactor K4, which is controlled by the Compass Control. Overheating thermostat Electric heated dryers are equipped with two overheating thermostats connected in series (one 80 C and one 90 C) which switches off in case of overheating and error code E08 flashes in the display, fig. 2. The switching on (reset) must be done manually but first the cause of the error must be detected and the switched off overheating thermostat must be found. This error is often caused by reduction of the air circulation in the dryer due to insufficient air in the room or due to the dryer being overloaded. If the dryer is stopped before the cool down sequence has ended the after-heat can cause the overheating thermostats to switch off. A 2 The following error code is related to this section. E 08 See Compass Control service manual. To be continued on the following page
48 Heating Continued from the previous page There are different types of heating elements depending on voltage and effect, fig. : To order the correct heating element, see label on the heating element for voltage and effect. Replacing heating element. Disconnect the power to the dryer. 2. Demount the back plate. 3. Disconnect thermostat wires A, fig. 2. 4. Disconnect the three connectors on the left side of the heating element box, fig. 3. 5. Unscrew the four screws on both sides and the three at the top of the heating element box, fig. 4. 2 3 A V2 V4 V6 4
Heating 49 6. Lift the cover upwards and take it away from the dryer. fig. 5. 7. Turn the box upside-down and unscrew the four screws, fig. 6. 8. Demount the heating element, fig. 7. 9. Mount the new heating element in the opposite order as described above. 5 6 7
50 Heating Gas heated dryers General The gas burner, the gas valve and the nozzle are located at the back of the dryer, fig.. Before replacement. Shut off the manual gas valve. 2. Disconnect the electrical power supply. Overheating fuse (See section "Sensor and overheating thermostats). E 08 See Compass Control Service Manual. Nozzle pressure To adjust the pressure unscrew the 6 screws on the cover plate at the back of the dryer. 2 5 Test run. Nozzle 2. Measuring branch, nozzle pressure 3. Nipple 4. Adjusting screw 5. Control Box, gas valve 6. Measuring branch, supply pressure 6 2 4+3 Loosen the measuring branch screw (2) anticlockwise a /4 of a turn. Connect a manometer to measuring branch (2). Select a programme that uses heat. Start the dryer. 3 Check the nozzle presure, see tables in section "Adjusting the dryer", chapter "Gas installation". If necessary adjust adjusting screw (4) found behind nipple (3). After testing, prepare the dryer for use.
Heating 5 Changing to natural gas/bottled gas If the machine is to be converted to another type of gas, the gas nozzle must be replaced, see tables in section "Adjusting the dryer", chapter "Gas installation". Changing the nozzle Before starting follow the steps on the previous page, chapter "Before replacement".. Unscrew the back plate. 2. Dismount the electrode wire on the left side of the heat box, fig.. 3. Dismount the compression nut and the compression ring. Pull the coupling from the nozzle, fig. 2. 2 4. Unscrew the 8 screws of the heat element box. 5. Lift the cover upwards and pull it to the right - still sitting on the edge. 6. Dismount the nozzle and replace it with the right dimension, see tables in section "Adjusting the dryer", chapter "Gas installation". 7. Assemble in the opposite order as described above. Replacing gas burner Before starting follow the steps on the previous page, chapter "Before replacement".. Follow step -5 above. 3 2. Unscrew the nozzle and the 2 screws in the burner bracket (left side), fig. 3. 3. Unscrew the 2 screws which are located at the bottom of the heat box - one at each side of the burner. Loosen the 2 screws above, fig. 3. Burner bracket
52 Heating 4. On the right side of the heat box unscrew the 2 screws which are located at the bottom of the heat box. Loosen the 2 screws above, fig.. 5. Pull out the gas burner and replace it. 6. Assemble in the opposite order as described above. Replacing the Gas valve Before starting follow the steps on the previous page, chapter "Before replacement".. Dismount the electrode wire on the left side of the heat box, see previous page. 2. Loosen the compression nut, fig. 2. 3. Dismount the earth conductors on the valve, fig. 3. 2 4. Unscrew the control box lid and pull out the box, fig. 3. 5. Unscrew the 2 screws and pull out the gas valve and mount the new valve. 6. Assemble in the opposite order as described above. 3 Earth conductors 4 Control box
Heating 53 Replacing the ignition electrode/flame sensor Before starting follow the steps on the previous page, chapter "Before replacement". Ignition electrolde. Disconnect the ignition electrode which is located on the left side of the heat box. 2. Unscrew the 2 screws and pull out the ignition electrode and replace it, fig.. Flame sensor. Disconnect the flame sensor which is located on the right side of the heat box. 2. Unscrew the 2 screws and pull out the flame sensor and replace it, fig. 2. 2.
54 Heating Converting to another type of gas If the dryer is to be converted to another type of gas, the gas nozzle and the air reducing plate must be replaced, see tables in section "Adjusting the dryer", chapter "Gas installation". LPG If the dryer is to be converted to LPG, use the air reducing plate and the matching nozzle. To change the reducing plate follow step -5 in the chapter "Changing the nozzle". Subsequently mount the plate in the 2 holes and then follow step 6-7, see fig.. Town gas 6 kw If the dryer is to be converted to town gas 6 kw, use the air reducing plate and the matching nozzle. To change the reducing plate follow step -5 in the chapter "Changing the nozzle". Subsequently mount the plate in the 4 holes and then follow step 6-7, see fig. 2. 2 Town gas 8 kw If the dryer is to be converted to town gas 8 kw, use the air reducing plate and the matching nozzle. To change the reducing plate follow step -5 in the chapter "Changing the nozzle". Subsequently mount the plate in the 4 holes and then follow step 6-7, see fig. 3. Note! The burner bracket must be mounted, see fig.. Natural gas 3 If the dryer is to be converted to natural gas, remove all air reducing plates. Note! The burner bracket must be mounted, see fig..
Heating 55 Gas error (E 4) Should a gas error occur error code E 4 will be displayed, fig.. In general gas errors occur due to supply shortage either if there is a gas failure or the gas pressure is too low. Other errors which can cause E 4 : Ignition failure, check the distance between the electrodes, fig. 2. The distance must be 3 mm (± 0.5 mm). The sensor (the ionization must detect the flame). The control box could be defective. Replace the defective control box, fig. 3 & 4. Gas heating problems often occur due to shortage in the air supply. It is therefore very important that the air supply to the room is sufficient. A rule of thumb for dimensioning the room s air inlet is that the air inlet opening must be 5 times the size of the air outlet opening. To read more about the evacuation system see the installation manual for T490. 2 6204 3 mm ERROR E4 GAS ERROR PUSH GASRESET BUTTON 3 Control box 4
56 Heating Gas error reset (E 4) When resetting gas error E-4 the dryer must operate on a program with heat The gas reset button is located on the CPU board under the top cover on the front of the dryer, fig.. The dryer must only be reset 3 times. If the dryer, however, has to be reset more than three times it has to be put out of order and a service technician must be called (does not apply for Japan). Gas reset button
Drum with bearing 57 Description The drum is rear suspended in a bearing where the bearing housing is mounted in the bottom of the drum. The bearing shaft is mounted on the chimney. At the front the drum rests on two supporting rollers which are mounted on a supporting rail. Replacing supporting rollers, bearing or drum. Disconnect the power to the dryer. 2. Demount top plate. 3. Remove filter A, fig.. 4. Remove door by demounting top hinge. Note! Only unscrew the two screws holding the hinge. Do not unscrew screw A as it secures the thread plate on the back of the front plate. Get a good grip on the door - it is heavy, fig. 2. Continued on the following page A B 2
58 Drum with bearing Replacing supporting rollers, bearing or drum (continued from the previous page) 5. Fig. 3 Demount front plade by removing: 8 covering buttons 2 screws 2 clips securing the panel Remove door switch wires and Control PCB. 6. Loosen the supporting rail with supporting rollers by unscrewing the 4 screws in the sides, fig. 4. 7. When replacing the supporting rollers demount the shaft screws from the supporting rail by unscrewing the nuts, fig. 4. Continued on the following page 3 4
Drum with bearing 59 Replacing supporting rollers, bearing or drum (continued from the previous page) 5 8. Demount bearing cover and center screw with disc, fig. 5. 9. Remove the big belt around the drum disengaging it from the drum, fig. 6. 0.Lift the collector graphites from the drum and fixate them in a position disengaging from the drum..carefully pull the drum out, fig. 7. 2.When replacing the bearing unscrew the three nuts. Bearing housing with bearing and triangular plate are loosened from the bottom of the drum, fig. 8. Continued on the following page. 6 7 8
60 Drum with bearing Replacing supporting rollers, bearing or drum (continued from the previous page) 3. Mount in opposite order. Note! Before replacing the drum: Make sure the collector graphies are still fixed in a retracted position. The big belt must be positioned loosely in the back of the cabinet so it can be moved freely over the drum. Be careful if there is an RMC connector and wire on the drum casing. If necessary protect them with tape mounting and positioning the drum in the dryer.
Cabinet, door reversal 6 Door reversal The door reversal illustrated below is on a lefthinged door:. Disconnect the power to the dryer. 2. Demount T-fitting A and screw the screws back into the same holes (in order to secure the plate on the back), fig.. 3. Disengage the door by carefully lifting it away from the front. Make sure to get a good grip on the door - it is heavy. 4. Demount T-fitting B, fig.. 5. Demount top plate. 6. Loosen cable tie with cable C and mount on the opposite side, fig. 2. 7. Move fitting with door switch D to the opposite side, fig. 3. 8. Move door handle to the opposite side of the door and screw cover screws into holes. 9. Mount T-fitting A at the bottom of the right side. 0. Engage the door by carefully lifting it back on the fitting. Mount T-fitting B at the top of the right side. Continued 2 C A+B 3 D
62 Cabinet, door reversal ENote! Refer to the section "door switch" in case of 4 doubt or incorrect function. E
RMC 63 RMC general RMC is a measuring method used to stop the dryer when the garments are dry. The current dryness/moisture of the garments is continuously measured and the drying sequence is brought to an end when the preset level has been obtained. The measuring signal is collected from the steel bands by means of the collector graphies which conduct the measuring signal to the Process Module. One of the collector graphies is connected to a lifter and the other one to the drum casing. A weak measuring current is sent through the garments which are in touch with the lifter, and as the resistance increases gradually as the garments are getting more and more dry the measuring signal is ready for onward processing by the Control PCB. Replacing collector graphies. Demount top plate. 2. Replace collector graphies fig. 2. 2
Pressure switch 65 Pressure switch Air pressure switch Function The air pressure switch ensures the necessary airflow in the dryer. Adjustment The pressure switch is not adjustable. If it fails it has to be replaced. a Error code E5 or E6 general If the error code E5 or E6 is displayed it is important first to check the under pressure in the drum compartment. The under pressure that is needed to operate the switch is 90Pa. Measuring the under pressure in the drum compartment 9. Start the dryer. 2. Remove the rubber tube A and measure the under pressure in the drum compartment. 3. After measuring the under pressure go to the specific error code for further trouble shooting. Error code E5 If the under pressure is below 90Pa.. Check the rubber tube A for lint-obstruction. 2. Refer to Service Manual Selecta Control for more information. Error code E6 Troubleshoot the pressure switch when the dryer is not operating:. Check that the normal state for the switch is normally open. Measure between a (common) and b (NO). 2. If the normal state for the switch is not open check the rubber tube A for lint-obstruction. 3. Is there no problem with the rubber tube, refer to Service Manual Selecta Control for more information. A b
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