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TECHNICAL INFORMATION
T 9800 and T 982x Dryers (US Models)
© 2009 Miele USA

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Summary of Contents for Miele T 982Series

  • Page 1 TECHNICAL INFORMATION T 9800 and T 982x Dryers (US Models) © 2009 Miele USA...
  • Page 2: Table Of Contents

    T 9800/T 982x Technical Information Table of Contents Warning and Safety Instructions ............6 General Information................... 6 Gas Dryers ....................6 Fire Danger Due To Excessive Lint............7 Restoring the Ground Connection after Dismantling the Front and Side Panels......................7 Modification History.................
  • Page 3 T 9800/T 982x Technical Information Residual Moisture Sensor Removal ..........27 Drum Light Removal ..............27 Lightbulb Replacement ..............27 Gas Heating (T 982x)................28 Technical Data..................29 Function....................29 Gas Unit..................29 Service..................... 33 Checking the Gas Burner ............33 Removing the Gas Solenoid ............
  • Page 4 T 9800/T 982x Technical Information F2: Open Circuit in Heater Bank NTC (2R30) ......55 3.10 F3: Drying Air NTC (1R30) Short Circuit........56 3.11 F4: Drying Air NTC (1R30) Open Circuit ........57 3.12 F50: Motor Stalls and Heater Is On for 3 Seconds ...... 57 3.13 F55: Overriding Time Limit Exceeded .........
  • Page 5 T 9800/T 982x Technical Information Figure 050-2: Air Shield Removal ................... 46 Figure 050-3: Felt Seal Installation ................. 47 Figure 090-1: Removing the Fascia, Electronic, and Electronic Support Panel....65 Figure 100-1: Fuse Replacement..................67 List of Tables Table C-1: General Technical Data................... 9 Table 010-1: Casing Technical Data................
  • Page 6: Warning And Safety Instructions

    T 9800/T 982x Technical Information Warning and Safety Instructions General Information Danger! Danger of high voltages when working on small components. In a single-board control, as in this appliance's electronic (EPWL 3xx), there is no structural galvanic potential disconnection to the power supply. Therefore, be careful when working on small components, as they may be carrying voltage if the dryer is not disconnected completely from its power supply.
  • Page 7: Fire Danger Due To Excessive Lint

    T 9800/T 982x Technical Information Fire Danger Due To Excessive Lint Danger! The dryer must not be operated if there are leaks in the air shield, such as those caused by a defective seal. If the dryer is operated regardless of these leaks, this will result in heavy lint in the appliance interior.
  • Page 8: Modification History

    T 9800/T 982x Technical Information Modification History When What 8/27/2009 Jessica Naples Conversion for Website 3/11/2009 Liane Westerhelweg Version 5 5/16/2008 Liane Westerhelweg Version 4 5/14/2008 Liane Westerhelweg Version 3 12/8/2006 Olaf Meyer zu Drewer Version 2 11/30/2006 Olaf Meyer zu Drewer Initial compilation...
  • Page 9: C Technical Data

    T 9800/T 982x Technical Information Technical Data T 9800 T 982x Electric Heating Gas Heating Dimensions Height x width x depth: 39” x 27” x 30” Shipping Height x width x depth: 42” x 30” x 32” dimensions Shipping weight Approx.
  • Page 10: Layout Of Electrical Components

    T 9800/T 982x Technical Information Layout of Electrical Components T 9800 Figure D-1: T 9800 Component Layout 1 (Z/1) Interference suppression capacitor 11 (A2) Door lock 2 (X3/1) Terminal block 12 (B3/1) Residual moisture sensor - Drum rib 3 (F2) Fuse 13 (WLAN) RemoteVision (optional) 4 (1K1/1) Heater relay 14 (C5) Motor capacitor...
  • Page 11: 982X

    T 9800/T 982x Technical Information T 982x Figure D-2: T 982x Component Layout 1 (Z/1) Interference suppression capacitor 12 (C5) Motor capacitor 2 (X3/1) Terminal block 13 (M5) Motor 3 (F2) Fuse 14 (1R30) Drying air NTC 4 (1K1/1) Heater relay 15 (Y57/1) Gas solenoid 5 (2K1/1) Heater relay 16 (Y57/2) Gas solenoid...
  • Page 12: 010 Casing, Front Panel

    T 9800/T 982x Technical Information Casing, Front Panel...
  • Page 13: Technical Data

    T 9800/T 982x Technical Information Technical Data Upright, frame construction, side walls Design embossed for reinforcement Table 010-1: Casing Technical Data Service Lid Removal 1. Disconnect the machine from the power supply. 2. Remove the screw caps on the sides. See Figure 010-1. 3.
  • Page 14: Removing The Front Panel

    T 9800/T 982x Technical Information Removing the Front Panel 1. Disconnect the machine from the power supply. 2. Remove the dryer lid; refer to Section 010-4.1. 3. Remove the fascia, the electronic, and the electronic's support panel; refer to Section 090-4.4. 4.
  • Page 15: Figure 010-3: Side Panel Removal

    T 9800/T 982x Technical Information 4. Remove the side panel retaining screws (nine T20s per panel). See Figure 010-3. 5. Take the side panel(s) off. Figure 010-3: Side Panel Removal Note: When re-installing the side panels, ensure that the screws with serrated washers (ground screws) are installed in the correct positions.
  • Page 16: 020 Door, Lock

    T 9800/T 982x Technical Information Door, Lock...
  • Page 17: Technical Data

    T 9800/T 982x Technical Information Technical Data Porthole door. Door hinge is on the left Door and cannot be reversed. Manual pull-open lock. Lock Door lock contact switch (A2). Drum door open = contact open. Table 020-1: Door Technical Data Function Door Lock (A2) Pull the door open.
  • Page 18: Door Hinge Removal

    T 9800/T 982x Technical Information Figure 020-1: Door Removal Door Hinge Removal 1. Disconnect the appliance from the power supply. 2. Remove the door; refer to Section 020-4.1. 3. Turn the door over; lay it on a soft mat or cloth so that the door glass does not get damaged.
  • Page 19: Removing The Door Lock

    T 9800/T 982x Technical Information Removing the Door Lock 1. Disconnect the appliance from the power supply. 2. Take off the front panel; refer to Section 010-4.2. 3. Remove the two T20 screws securing the door lock to the front panel. See Figure 020-2.
  • Page 20: 030 Drum, Rear Bearing, Residual Moisture Sensor, Heater Bank

    T 9800/T 982x Technical Information Drum, Rear Bearing, Residual Moisture Sensor, Heater Bank...
  • Page 21: Technical Data

    T 9800/T 982x Technical Information Technical Data Maximum load 17.6 lbs (8 kg) Drum volume 48 gal (180L) Drum speed 48 rpm Table 030-1: Drum Data Heating mode Electric; for gas, refer to Table 031-1. Heater type Duct heater bank (R1, R2, R3); 3-filament Heater output 5.2kW (1.90kW, 1.70kW, 1.60kW) Temperature sensor...
  • Page 22: Function

    T 9800/T 982x Technical Information Temperature Resistance (kΩ) Heater bank NTC Drying air NTC °F °C (2R30) (1R30) 6.80 1.06 5.14 0.73 3.95 0.569 3.07 0.449 2.41 0.358 1.92 0.289 1.55 1.26 1.03 0.852 0.710 Table 030-3: Heater Bank and Drying Air NTC Resistance Values Function No-Load Detection Only in residual moisture programs.
  • Page 23: Heater Control

    T 9800/T 982x Technical Information Heater Control Safety function: If the drying air NTC (1R30) is defective, then the heater will not be switched on. The heater is switched off as soon as the heater relay has been running for more than 5 seconds without the motor relay being activated as well.
  • Page 24: Service

    T 9800/T 982x Technical Information Cause: Clogged air duct vents. Remedy: Clean the air duct openings. Cause: Clogged air vents/exhaust vents. Remedy: Clean the air vents/exhaust vents. Cause: Drum is sluggish. Remedy: 1. Check the front bearing seals (front and back needle felting) for correct position.
  • Page 25: Rear Bearing Removal

    T 9800/T 982x Technical Information Figure 030-1: Heater Bank Removal Rear Bearing Removal 1. Disconnect the appliance from the power supply. 2. Remove the dryer lid; refer to Section 010-4.1. 3. Remove the front panel; refer to Section 010-4.2. 4. Remove the right side panel; refer to Section 010-4.3. 5.
  • Page 26: Figure 030-2: Bearing Housing Attachment

    T 9800/T 982x Technical Information Figure 030-2: Bearing Housing Attachment 8. Remove the three T20 screws securing the bearing cover at the rear of the machine; see Figure 030-3, Item 1. 9. Unlock the rear bearing and take it off. Figure 030-3: Rear Bearing...
  • Page 27: Residual Moisture Sensor Removal

    T 9800/T 982x Technical Information Residual Moisture Sensor Removal 1. Disconnect the appliance from the power supply. 2. Remove the dryer lid; refer to Section 010-4.1. Note: The residual moisture sensor is located at Figure D-1, Item 7. 3. Unhook the spring. 4.
  • Page 28: Gas Heating (T 982X)

    T 9800/T 982x Technical Information Gas Heating (T 982x)
  • Page 29: Technical Data

    T 9800/T 982x Technical Information Technical Data Heating mode Gas; for electric, refer to Table 030-2. Gas burner Gas burner, pipe configuration, 5.7kW. Model: Venturi Natural-gas version - 5.4kW ANSI Gas A, 1076 BTU/ft output Temperature sensor Heater bank NTC (2R30) Two 3/4”...
  • Page 30: Figure 031-1: Gas Ignition Schematic

    T 9800/T 982x Technical Information 2.1.2 Gas Ignition Figure 031-1: Gas Ignition Schematic 1 NTC heating (1R30, 2R30) in heating duct 2 Gas solenoid valve Y57 3 Gas solenoid valve Y57/2 4 Gas solenoid valve Y57/1 5 Maintaining coil for gas solenoid valve Y57/1 6 Booster coil for gas solenoid valve Y57/1 7 Igniter E1/1 8 Temperature limiter (1F1, 2F1)
  • Page 31: Figure 031-3: Drying Process, After Gas Has Started To Flow

    T 9800/T 982x Technical Information At the start of the drying process, flame sensor B1/16 is in a cool state and is closed. Gas solenoid valve Y57/2 is not carrying voltage and is therefore closed. At the demand for heating, both heater relays 1K1/1 and 2K1/1 close. Maintaining and booster coils of gas solenoid valve Y57/1 carry voltage so gas solenoid valve Y57/1 opens;...
  • Page 32: Figure 031-5: Drying Process After Flame Has Gone Out

    T 9800/T 982x Technical Information Figure 031-5: Drying Process after Flame Has Gone Out If the flame goes out, the sluggishness of flame sensor B1/16 will cause gas to continue flowing until gas solenoid valve Y57/2 closes and stops the gas flow.
  • Page 33: Service

    T 9800/T 982x Technical Information Service Note: When working on a gas dryer (T 982x), the drum door must be closed. If the front panel is off, the opening to the drum needs to be blocked off. Checking the Gas Burner Danger! Danger of burning.
  • Page 34: Figure 031-6: Port For Measuring Jet Pressure

    T 9800/T 982x Technical Information 4. Check the function of the exhaust air duct and the fan. 5. Check the flame sensor (B1/16) for continuity (at room temperature). Danger! Danger of high voltage when working on the appliance while it's opened. Components carry voltage.
  • Page 35: Removing The Gas Solenoid

    T 9800/T 982x Technical Information Removing the Gas Solenoid 1. Disconnect the machine from the power and gas supplies. 2. Remove the dryer lid; refer to Section 010-4.1. 3. Remove the front panel; refer to Section 010-4.2. 4. Remove the left side panel; refer to Section 010-4.3. 5.
  • Page 36: Installing The Gas Solenoid Valve

    T 9800/T 982x Technical Information Figure 031-8: Disconnecting the Gas Regulation Valve 7. Remove the retaining bracket of the gas regulation valve using a metric 7mm Allen wrench and a Phillips-head screwdriver. 8. Take the gas regulation valve off the burner. Installing the Gas Solenoid Valve Warning! Clean soiled components with spray cleaner (MICROTEC Profi-Clean, mat.
  • Page 37: Figure 031-10: Tightening The Gas Regulation Valve

    T 9800/T 982x Technical Information 4. For the permanent assembly, give the connecting nut another quarter- turn with a metric 17mm open-end wrench (19 Nm ± 1 Nm) while maintaining counterpressure on the double nipple with a second metric 17mm open-end wrench. See Figure 031-10. Figure 031-10: Tightening the Gas Regulation Valve 5.
  • Page 38: Removing The Gas Burner

    T 9800/T 982x Technical Information 6. Attach the right side panel. 7. Attach the front panel. 8. Attach the fascia panel. 9. Attach the dryer lid. Warning! Perform an electrical safety check. Perform a gas safety check. With the system under normal gas pressure, check the gas connections for a tight seal using a spray such as Leak Test.
  • Page 39: Installing The Gas Burner

    T 9800/T 982x Technical Information Installing the Gas Burner 1. Secure the burner with a screw. See Figure 031-13. Figure 031-13: Gas Regulation Valve 2. Install the gas solenoid valve; refer to Section 031-4.3. 3. Attach the left side panel; refer to Section 010-4.3. 4.
  • Page 40: Motor, Fan

    T 9800/T 982x Technical Information Motor, Fan...
  • Page 41: Technical Data

    T 9800/T 982x Technical Information Technical Data Vented Dryer Gas Dryer Motor, fan Approx. motor rating 400W Approx. 200cfm (66' pipe, d = 4”, straight-run Fan, volume flow, free flowing without additional structures) Table 040-1: Fan and Motor Data Service Fan Impeller Replacement 1.
  • Page 42: Figure 040-1: Fan Impeller Removal

    T 9800/T 982x Technical Information Figure 040-1: Fan Impeller Removal 9. Install the new fan impeller, and secure it with the 10-millimeter bolt. 10. Reinstall the air shield. 11. Reinstall the metal bracket in front of the air shield. 12. Reinstall the right side panel, making sure that the grounding screws are in their proper positions.
  • Page 43: Motor Replacement

    T 9800/T 982x Technical Information Motor Replacement 1. Disconnect the machine from the power supply. 2. Remove the dryer lid; refer to Section 010-4.1. 3. Remove the fascia, the electronic, and the electronic's support panel; refer to Section 090-4.4. 4. Remove the front panel; refer to Section 010-4.2. 5.
  • Page 44: Air Shield, Front Bearing

    T 9800/T 982x Technical Information Air Shield, Front Bearing...
  • Page 45: Technical Data

    T 9800/T 982x Technical Information Technical Data Filter Flat filter Drying air temperature sensor NTC (1R30) Table 050-1: Air Shield Data Fault Repair Vibration Noises from the Base Plate Cause: The exhaust module vibrates during appliance operation, which causes vibrations in the base plate of the appliance. A buzzing or humming noise is generated.
  • Page 46: Service

    T 9800/T 982x Technical Information Service Air Shield Removal 1. Disconnect the machine from the power supply. 2. Remove the dryer lid; refer to Section 010-4.1. 3. Remove the fascia, the electronic, and the electronic's support panel; refer to Section 090-4.4. 4.
  • Page 47: Felt Seal Replacement

    T 9800/T 982x Technical Information Felt Seal Replacement 1. Disconnect the machine from the power supply. 2. Remove the air shield (Section 050-4.1) but do not disconnect any electrical connections. 3. Lean the air shield against the appliance with the felt seal exposed. 4.
  • Page 48 T 9800/T 982x Technical Information reverse order. 11. Reinstall the metal bracket in front of the air shield. 12. Hook the tension spring back onto the intermediate drive notch, using needlenose pliers if necessary. 13. Reinstall the right side panel, making sure that the grounding screws are in their proper positions.
  • Page 49: Fascia Panel, Electronic

    T 9800/T 982x Technical Information Fascia Panel, Electronic...
  • Page 50: Technical Data

    T 9800/T 982x Technical Information Technical Data Electric Heating Gas Heating USA: EPWL 345 USA: EPWL 341 (single-board electronic) (single-board electronic) Electronic (1N1) Can be updated via optical PC interface installed standard Residual moisture sensing: conductivity test, residual moisture sensor (B3/1), 1-rib sampling Drying technology Insufficient air detection via heater bank NTC 2R30 and drying air NTC 1R30...
  • Page 51: Residual Moisture Sensing

    T 9800/T 982x Technical Information 2.4.2 Normal Drying Outcome (Residual Moisture) Drying can be set to more damp or more dry to suit the customer's preference. 2.4.3 Delicates Drying Outcome (Residual Moisture) Drying can be set to more damp or more dry to suit the customer's preference. More Damp Standard More Dry...
  • Page 52: Overriding The Time Control

    T 9800/T 982x Technical Information Overriding the Time Control A fixed maximum time of approximately 180 minutes is imposed on all residual moisture drying programs at program start. After this time has elapsed, any drying program is stopped and the cooldown phase for faults is carried out.
  • Page 53: Fault Repair

    T 9800/T 982x Technical Information Fault Repair “End” LED Is Steadily Lit Symptom: This fault occurs in the normal operating mode (residual moisture programs only). Program stop, cooling air phase, intermittent buzzer tone. Opening and then closing the door deletes this fault message. Cause: The drum is empty, or loaded with only a few laundry items.
  • Page 54: Check Filter/Vent" Led Flashes Rapidly

    T 9800/T 982x Technical Information “Check Filter/Vent” LED Flashes Rapidly Symptom: Program stop, cooling phase, buzzer sounds intermittently for 2 minutes. Fault code F66 (Leaking air fault) in the fault memory. Cause: Air paths are clogged. Insufficient air measurement; refer to Section 090-2.7. Remedy: Clean air paths.
  • Page 55: All Program Leds Flash

    T 9800/T 982x Technical Information Cause: Temperature limiter with manual reset (F1) has tripped (electric dryers only). Remedy: 1. Reset the temperature limiter. 2. Find and rectify the cause for the temperature limiter tripping. Cause: Gas burner is not heating (gas dryers only). Remedy: Check the burner;...
  • Page 56: F3: Drying Air Ntc (1R30) Short Circuit

    T 9800/T 982x Technical Information Cause: Open circuit at heater bank NTC (below 68°F); evaluation only after the heater has been running for at least 1 minute. Remedy: Check the wires and connectors of heater bank NTC 2R30 for a short or open circuit.
  • Page 57: F4: Drying Air Ntc (1R30) Open Circuit

    T 9800/T 982x Technical Information 3.11 F4: Drying Air NTC (1R30) Open Circuit Symptom: Program stop, cooling phase, intermittent buzzer tone. Only the timed program “cold air” still works. The “Hand iron” LED flashes. The “Check Filter/Vent” LED flashes. Opening and closing the door deletes this fault indication. Cause: Open circuit (below 5°F) in the drying air NTC (1R30).
  • Page 58: F66: Air Leakage

    T 9800/T 982x Technical Information Cause: Heater bank is not heating. Remedy: Check the heater element (R1) for a short or open circuit. Cause: Heater relay (K1/1). Remedy: Check the heater relay (K1/1). Cause: Temperature limiter (SOD, F2). Remedy: Check the temperature limiter (SOD, F2) for an open circuit. Cause: Defective residual moisture sensor (B3/1).
  • Page 59: Laundry Is Overdried/F55 (Overriding Time Limit Exceeded)

    T 9800/T 982x Technical Information 3.16 Laundry Is Overdried/F55 (Overriding Time Limit Exceeded) Symptom: Very long operating time. F 55 is stored in the fault memory. Cause: Short circuit at drum contact strip. A metal bracket of the drum contact strip is touching the drum casing and has caused a short circuit.
  • Page 60: Service

    T 9800/T 982x Technical Information Service Programming Mode Summary Initial requirements: 1. End the current program as well as the demo mode. 2. Open the door. Accessing: Note: Access has to be completed within 10 seconds. 1. Press and hold the Start/Stop button. 2.
  • Page 61: Table 090-4: Programming Mode Summary

    T 9800/T 982x Technical Information Programming Function Option “Buzzer” LED long short “Drying” LED short adapted options Reset, refer to Section delivery 090-2.4.1 condition more damp Normal drying outcome (residual standard moisture), refer to Section 090-2.4.2 more dry more damp Delicates drying outcome (residual standard...
  • Page 62: Activating/Deactivating The Demonstration Mode

    T 9800/T 982x Technical Information Activating/Deactivating the Demonstration Mode Initial requirements: 1. End the current program. 2. Open the door. Accessing: Note: Access has to be completed within 10 seconds. 1. Press and hold the Start/Stop button. 2. Close the door. 3.
  • Page 63 T 9800/T 982x Technical Information Options: 1. Press the Buzzer button to select a service function. 2. The “Buzzer” LED flashes to indicate the selected function. See Table 090-5. 3. Press the Start/Stop button to select options. 4. The “Drying” LED flashes to indicate the selected option. See Table 090-5. Note: The component test switches off automatically 30 minutes after the last component is activated.
  • Page 64: Removing The Fascia, Electronic And Electronic Support Panel

    T 9800/T 982x Technical Information Service Functions Options “Buzzer” LED short “Drying” LED long short Check the residual moisture sensor (B3/1) for high ohmic status (isolation). Requires no electrical connection between drum and sensor rib. Steady buzzer tone Component test LEDs flash (1x per second) Heater relay 2K1/1 and motor on Heater relays (1K1/1, 2K1/1, 3K1/1),...
  • Page 65: Figure 090-1: Removing The Fascia, Electronic, And Electronic Support Panel

    T 9800/T 982x Technical Information Figure 090-1: Removing the Fascia, Electronic, and Electronic Support Panel...
  • Page 66: 100 Electrical System

    T 9800/T 982x Technical Information Electrical System...
  • Page 67: Technical Data

    T 9800/T 982x Technical Information Technical Data Electric Heating Gas Heating Dryer fuses (F2); 7 A T, 6.3 mm x 32 mm (0.25” x 1.25”) Heater relays (1K1/1, 2K1/1, Electrical system 3K1/1): single-anchor relays, Heater relays (1K1/1, 2K1/1) rating 11A; coil: 12VDC, 200Ω...

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T 9800

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