Primus D11 Service Manual
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Primus D11 Service Manual

Industrial dryers
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D11, 13, 15
SERVICE MANUAL
INDUSTRIAL DRYERS
PUBLICATION DATE: 12/03
70284701

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  • Page 1 D11, 13, 15 SERVICE MANUAL INDUSTRIAL DRYERS PUBLICATION DATE: 12/03 70284701...

  • Page 3: Table Of Contents

    Table of Contents Section 1 – Safety Information 29. Rear cylinder seal ..........25 Locating an authorized service person.....4 30. Roller support and baffle assembly ....26 31. Airflow switch..........27 Section 2 – Introduction 32. Stove high limit thermostat ......27 Model identification..........5 33.
  • Page 4 63. Will not start – Electric – Manual timer..50 Section 9 – NetMaster Troubleshooting 64. Will not start – Electric – Rotary coin drop ..51 97. No IR communication ........129 65. Will not start – Gas – Manual timer ....53 98.

  • Page 5: Section 1 - Safety Information

    Section 1 Safety Information Throughout this manual and on machine decals, you In the interest of safety, some general precautions will find precautionary statements (“CAUTION”, relating to the operation of this machine follow. “WARNING”, and “DANGER”) followed by specific instructions. These precautions are intended for the WARNING personal safety of the operator, user, servicer, and those maintaining the machine.

  • Page 6: Locating An Authorized Service Person

    Section 1 Safety Information IMPORTANT INFORMATION: During the NOTE: The WARNING and IMPORTANT lifetime of a tumbler, it may require service. The instructions appearing in this manual are not meant information contained in this manual was written to cover all possible conditions and situations that and is intended for use by qualified service may occur.

  • Page 7: Section 2 - Introduction

    Section 2 Introduction Model identification Information in this manual is applicable to these models: Steam Electric HA025L PA025N SU025L HT025S ST025S HT025E ST025E HA025N PT025L SU025N HU025S SU025S HU025E SU025E HT025L PT025N UA025L PT025S UT025S PT025E UT025E HT025N PU025L UA025N PU025S UU025S PU025E...

  • Page 8: Serial Plate Location

    Section 2 Introduction Serial plate location When calling or writing about your product, be sure to mention model and serial numbers. Model and serial numbers are located on serial plate as shown. ANS 72152 CLOTHES DRYER. VOL II MODEL NO: TESTED FOR NATURAL &...

  • Page 9: How A Tumbler Works

    Section 2 Introduction How a tumbler works A tumbler uses heated air to dry loads of laundry. When the motor is started, the exhaust fan pulls room temperature air in through the air intake at the rear of the tumbler and over the heat source (burner flame for gas, heating element for electric, and coil for steam).
  • Page 10 Section 2 Introduction Notes 70284701...

  • Page 11: Section 3 - Troubleshooting

    Section 3 Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 12: Motor Overload Protector Cycles Repeatedly

    Section 3 Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 13: Burner Does Not Ignite

    Section 3 Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 14: Burner Ignites And Goes Out Repeatedly

    Section 3 Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 15: Clothes Do Not Dry

    Section 3 Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 16: Burners Not Burning Properly

    Section 3 Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 17: Section 4 - Grounding

    Section 4 Grounding WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...
  • Page 18 Section 4 Grounding Notes 70284701...

  • Page 19: Section 5 - Service Procedures

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 20: Front Panel

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 21: Door Switch

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 22: Control And Coin Drop Assembly

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 23: Lint Panel Switch

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 24: Cylinder Rollers

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 25: Cylinder

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 26: Cylinder Belt

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 27: Rear Cylinder Seal

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 28: Roller Support And Baffle Assembly

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 29: Airflow Switch

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 30: Complete Gas Valve Assembly

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...
  • Page 31 Section 5 Service Procedures RIVET MANUAL SHUT-OFF VALVE CLOSE GAS VALVE NIPPLE COVER UNION GAS VALVE BRACKET VALVE VALVE PIPE NIPPLE VALVE BRACKET ELBOW TMB1942P ORIFICE ADAPTER HOLDER BRACKET TMB1973P European and Australian Models Non-European and Non-Australian Models Figure 18 70284701...

  • Page 32: Burner Tube Assembly

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 33: Electronic Ignition Control

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 34: Thermistor

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 35: Heater Element

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 36: Contactors

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 37: Steam Coil

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 38: Drive Belt

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 39: Fan

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 40: Drive Motor

    Section 5 Service Procedures WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 41: Section 6 - Adjustments

    Section 6 Adjustments WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 42: Loading Door Switch

    Section 6 Adjustments WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 43: Loading Door Strike

    Section 6 Adjustments WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...
  • Page 44 Section 6 Adjustments Notes 70284701...

  • Page 45: Section 7 - Electronic Control Troubleshooting

    Section 7 Electronic Control Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 46: Cannot Perform Infrared (Ir) Communication

    Section 7 Electronic Control Troubleshooting 57. CANNOT PERFORM INFRARED (IR) COMMUNICATION Single and stacked. Gas and electric heat. Single and three phase Attempt to supply. communicate with the electronic control from the microwand. Check the following: - low battery on microwand. - is the IR window covered or Is there a response of Aim microwand...

  • Page 47: Coins Ignored When Entered

    Section 7 Electronic Control Troubleshooting 58. COINS IGNORED WHEN ENTERED Single and stacked units. Gas and electric heat. Single and three phase voltage. Start coin drop diagnostic tests. Exit diagnostic Does the display on the testing and reset EDC control increment control.

  • Page 48: Control Display - Door Open Light "On

    Section 7 Electronic Control Troubleshooting 59. CONTROL DISPLAY – DOOR OPEN LIGHT “ON” Single and stacked Reference voltage units. Gas and electric checks to transformer heat. Single and three neutral. phase supply. Correct wiring Is there voltage at between secondary the input of the fuse and secondary fuse?

  • Page 49: Control Display - "Door" Error On 25, 30, Stacked 30 And 35 Pound Tumblers With 24 Volt Edc Controls

    Section 7 Electronic Control Troubleshooting 60. CONTROL DISPLAY – “DOOR” ERROR ON 25, 30, STACKED 30 AND 35 POUND TUMBLERS WITH 24 VOLT EDC CONTROLS 70284701...

  • Page 50: Control Display - No Visible Display - Opl Microprocessor Models

    Section 7 Electronic Control Troubleshooting 61. CONTROL DISPLAY – NO VISIBLE DISPLAY – OPL MICROPROCESSOR MODELS Gas, steam and electric heat. Single and three phase supply. Is there voltage Connect supply Is there voltage across Replace OPL Micro. supplied to the unit? voltage and run unit.

  • Page 51: Control Display - No Visible Display - Power On

    Section 7 Electronic Control Troubleshooting 62. CONTROL DISPLAY – NO VISIBLE DISPLAY – POWER ON Single and stacked units. Gas and electric heat. Single and three phase supply. Correct wiring Is there voltage across Is there voltage at Replace EDC between secondary H4-2 &...

  • Page 52: Will Not Start - Electric - Manual Timer

    Section 7 Electronic Control Troubleshooting 63. WILL NOT START – ELECTRIC – MANUAL TIMER Manual Timer, with and without time delay board. Single and stacked units. Single and three phase power supply. Is there power supply Connect power voltage coming to the and run the cycle.
  • Page 53 Section 7 Electronic Control Troubleshooting 64. WILL NOT START – ELECTRIC – ROTARY COIN DROP (Sheet 1 of 2) Coin Drop with and without time delay boards. Single and stacked units. Single and three phase power supply. Correct wiring Connect power to between Is there voltage Is there power supply...

  • Page 54: Will Not Start - Electric - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting WILL NOT START – ELECTRIC – ROTARY COIN DROP (Sheet 2 of 2) STEP 1 STEP 2 Correct wiring between Correct wiring Is there voltage to Is there voltage at H1-2 and between 2A of start H1-2 on TMR1 2A of the start output of...

  • Page 55: Will Not Start - Gas - Manual Timer

    Section 7 Electronic Control Troubleshooting 65. WILL NOT START – GAS – MANUAL TIMER No motor run (start circuit) Manual Tumblers. Single and stacked units with and without time delay Is there power supply Connect power voltage coming to the and run the cycle.

  • Page 56: Will Not Start - Gas - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting 66. WILL NOT START – GAS – ROTARY COIN DROP (Sheet 1 of 2) Single & stacked tumblers with and without time delay. Correct wiring Connect power to between Is there power supply Is there voltage across the unit and run coinmeter timer voltage coming to the...
  • Page 57 Section 7 Electronic Control Troubleshooting WILL NOT START – GAS – ROTARY COIN DROP (Sheet 2 of 2) STEP 1 STEP 2 Correct wiring between Correct wiring Is there voltage to Is there voltage at H1-2 and between 2A of start H1-2 on TMR1 2A of the start output of...

  • Page 58: Will Not Start - Steam - Manual Timer

    Section 7 Electronic Control Troubleshooting 67. WILL NOT START – STEAM – MANUAL TIMER Single and stacked units with and without time delay boards. Is there power supply Connect power voltage coming to the and run the cycle. tumbler? Is there voltage Correct wiring Change the primary Still no voltage...
  • Page 59 Section 7 Electronic Control Troubleshooting 68. WILL NOT START – STEAM – ROTARY COIN DROP (Sheet 1 of 2) Single and stacked tumblers with and without time delay. Correct wiring Connect power to between Is there power supply Is there voltage across the unit and run coinmeter timer to the unit?

  • Page 60: Will Not Start - Steam - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting WILL NOT START – STEAM – ROTARY COIN DROP (Sheet 2 of 2) COLUMN 1 COLUMN 2 Correct wiring between Correct wiring Is there voltage to H1-2 and Is there voltage at between 2A of H1-2 on TMR1 output of 2A of the start...
  • Page 61 Section 7 Electronic Control Troubleshooting 69. WILL NOT START/CONTINUE RUNNING – EDC CONTROL (Sheet 1 of 3) Single and stacked units. Gas, electric and Note: Test conducted with vend steam heat. Single and price satisfied and start button three phase supply. pressed.

  • Page 62: Will Not Start/Continue Running - Edc Control

    Section 7 Electronic Control Troubleshooting WILL NOT START/CONTINUE RUNNING – EDC CONTROL (Sheet 2 of 3) Note: Tests conducted with vend price satisfied and start button pressed. Correct wiring Is there voltage across between fan motor terminals 1 & 4 of and motor control the fan motor? relay.
  • Page 63 Section 7 Electronic Control Troubleshooting WILL NOT START/CONTINUE RUNNING – EDC CONTROL (Sheet 3 of 3) Correct wiring Is there voltage across between cylinder terminals 1 & 4 of motor and motor cylinder motor? control relay. Replace cylinder Does the cylinder motor.
  • Page 64 Section 7 Electronic Control Troubleshooting 70. WILL NOT START/CONTINUE RUNNING – OPL MICROPROCESSOR CONTROL (Sheet 1 of 3) Gas, steam and electric heat. Single and three phase supply. Reference voltage to supply neutral. Is there voltage to Connect supply Replace secondary Is power supplied to output of secondary and run unit.

  • Page 65: Will Not Start/Continue Running - Opl Microprocessor Control

    Section 7 Electronic Control Troubleshooting WILL NOT START/CONTINUE RUNNING – OPL MICROPROCESSOR CONTROL (Sheet 2 of 3) Tests conducted with cycle selected and start key pad activated. Correct wiring Is there voltage between fan motor across terminals and motor control 1 &...
  • Page 66 Section 7 Electronic Control Troubleshooting WILL NOT START/CONTINUE RUNNING – OPL MICROPROCESSOR CONTROL (Sheet 3 of 3) Correct the wiring Is there voltage between the across terminals 1 & 4 of cylinder motor and the cylinder motor? control relay. Does the cylinder Replace cylinder motor run? motor.
  • Page 67 Section 7 Electronic Control Troubleshooting 71. WILL NOT RUN – ELECTRIC – MANUAL TIMER (Sheet 1 of 3) With and without time delay boards. Single and stacked units. Single and three phase power supply. Correct wiring Is there voltage at Is the unit equipped between drying terminal C on the...

  • Page 68: Will Not Run - Electric - Manual Timer

    Section 7 Electronic Control Troubleshooting WILL NOT RUN – ELECTRIC – MANUAL TIMER (Sheet 2 of 3) Is there Three phase voltage across Is this a single phase Replace motor terminals 14 & 13 of or three phase unit? control relay. motor control relay? Single phase Is there voltage...
  • Page 69 Section 7 Electronic Control Troubleshooting WILL NOT RUN – ELECTRIC – MANUAL TIMER (Sheet 3 of 3) Correct wiring Three phase. Is there voltage to L2 between motor Is unit single phase or on motor control relay? control relay and three phase? supply.
  • Page 70 Section 7 Electronic Control Troubleshooting 72. WILL NOT RUN – ELECTRIC – ROTARY COIN DROP (Sheet 1 of 3) Single and Stack with and without time delay. Single and three phase power. Correct wiring Is there voltage across ** Tested with vend price between CR2 terminals 7 &...

  • Page 71: Will Not Run - Electric - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting WILL NOT RUN – ELECTRIC – ROTARY COIN DROP (Sheet 2 of 3) COLUMN 2 COLUMN 1 Is there voltage across Is there voltage across Replace motor Replace motor terminal 5 & 8 of the terminal 14 &...
  • Page 72 Section 7 Electronic Control Troubleshooting WILL NOT RUN – ELECTRIC – ROTARY COIN DROP (Sheet 3 of 3) COLUMN 1 Is there voltage across Replace motor terminals 6 & 9 of control relay. motor control relay? Correct wiring Is there voltage at between cylinder terminals 1 &...
  • Page 73 Section 7 Electronic Control Troubleshooting 73. WILL NOT RUN – GAS – MANUAL TIMER (Sheet 1 of 2) No motor run (run circuit). Single and stacked units with and without time delay boards. Correct wiring Is there voltage at between drying Is the unit equipped terminal c on the timer and lint panel...

  • Page 74: Will Not Run - Gas - Manual Timer

    Section 7 Electronic Control Troubleshooting WILL NOT RUN – GAS – MANUAL TIMER (Sheet 2 of 2) Is there voltage across Does the fan motor Replace the fan terminal 7 & 4 of the run? motor. motor control relay? Note: Only for non time delay machines Is there voltage across...
  • Page 75 Section 7 Electronic Control Troubleshooting 74. WILL NOT RUN – GAS – ROTARY COIN DROP (Sheet 1 of 2) Single and stack with and without time delay. ** Tested with start switch pressed in. Is there voltage across Replace time DOB contacts (H1-4 delay board.

  • Page 76: Will Not Run - Gas - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting WILL NOT RUN – GAS – ROTARY COIN DROP (Sheet 2 of 2) Correct wiring Is there voltage at Is there voltage across between cylinder Replace motor terminals 1 & 4 of terminal 5 & 8 of the motor and contact control relay.
  • Page 77 Section 7 Electronic Control Troubleshooting 75. WILL NOT RUN – STEAM – MANUAL TIMER (Sheet 1 of 2) Single and stacked units with and without time delay board. Is the unit equipped with a time delay Correct wiring board? Is there voltage at between drying terminal C on the timer and lint panel...

  • Page 78: Will Not Run - Steam - Manual Timer

    Section 7 Electronic Control Troubleshooting WILL NOT RUN – STEAM – MANUAL TIMER (Sheet 2 of 2) Is there voltage across Replace the fan Does the fan motor terminal 7 & 4 of the motor. run? motor control relay? Note: Only for non time delay machines Is there voltage across...

  • Page 79: Will Not Run - Steam - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting 76. WILL NOT RUN – STEAM – ROTARY COIN DROP (Sheet 1 of 2) Single and stack with and without time delay. ** Tested with start switch pressed in and vend Is there voltage across satisfied.
  • Page 80 Section 7 Electronic Control Troubleshooting WILL NOT RUN – STEAM – ROTARY COIN DROP (Sheet 2 of 2) Correct wiring Is there voltage across Is there voltage at between cylinder Replace motor terminal 5 & 8 of the terminals 1 & 4 of motor and contact control relay.
  • Page 81 Section 7 Electronic Control Troubleshooting 77. WILL NOT HEAT – ELECTRIC – MANUAL TIMER (Sheet 1 of 2) With and without time delay board. Single and stacked units. Single and three phase power supply. NOTE: The following tests are conducted with the heat timer in the "ON"...

  • Page 82: Will Not Heat - Electric - Manual Timer

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – ELECTRIC – MANUAL TIMER (Sheet 2 of 2) Note: Voltage checks are referenced to transformer neutral. Correct wiring Is there voltage to the between cabinet Do the elements Replace elements. input side of the limit and temp produce heat? cabinet limit?
  • Page 83 Section 7 Electronic Control Troubleshooting 78. WILL NOT HEAT – ELECTRIC (Sheet 1 of 2) Single and stacked units with single and three Note: Tests are conducted with unit running phase supply. and calling for heat. All voltage checks are referenced to transformer neutral.

  • Page 84: Will Not Heat - Electric

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – ELECTRIC (Sheet 2 of 2) Is there voltage to the Replace the stove output side of the stove limit. limit? Correct wiring to Is there voltage across the coils of HC1 coils HC1 &...
  • Page 85 Section 7 Electronic Control Troubleshooting 79. WILL NOT HEAT – ELECTRIC – ROTARY COIN DROP (With and without time delay board) (Sheet 1 of 2) Single and stacked tumblers with and without time delay. Single and three phase units. there voltage across Is there voltage at Adjust the airflow across terminals 1 &...

  • Page 86: Will Not Heat - Electric - Rotary Coin Drop (With And Without Time Delay Board)

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – ELECTRIC – ROTARY COIN DROP (With and without time delay board) (Sheet 2 of 2) Note: Voltage checks are referenced to transformer neutral. Correct wiring Is there voltage to the between cabinet Do the elements Replace elements.
  • Page 87 Section 7 Electronic Control Troubleshooting 80. WILL NOT HEAT – ELECTRIC/GAS – OPL MICROPROCESSOR (Sheet 1 of 3) Note: Testing conducted with unit running Single and three phase supply. and calling for heat. Reference voltage to transformer neutral terminal 3. Is there voltage across Is there voltage at Continued on next...

  • Page 88: Will Not Heat - Electric/Gas - Opl Microprocessor

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – ELECTRIC/GAS – OPL MICROPROCESSOR (Sheet 2 of 3) The following tests are Column 1 Column 2 conducted with the unit running and calling for heat. Check for proper Is there voltage to Correct wiring Is there voltage at operation and...
  • Page 89 Section 7 Electronic Control Troubleshooting WILL NOT HEAT – ELECTRIC/GAS – OPL MICROPROCESSOR (Sheet 3 of 3) Continued from column 2 of previous page. Correct wiring Is there voltage to Replace ICM board. between cabinet terminal 1 of ICM Is there voltage to the limit and terminal board? input of the cabinet...
  • Page 90 Section 7 Electronic Control Troubleshooting 81. WILL NOT HEAT – GAS – EDC MODELS (Sheet 1 of 2) Single and stacked Note: Tests are conducted with unit units. running and calling for heat. All voltage checks are referenced to transformer neutral. Correct wiring Correct wiring between terminal...

  • Page 91: Will Not Heat - Gas - Edc Models

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – GAS – EDC MODELS (Sheet 2 of 2) Is there voltage to the Replace the stove Is there a flame? Unit operational. output side of the stove limit. limit? Correct wiring Is there voltage to between terminal terminal 2 of the ICM...
  • Page 92 Section 7 Electronic Control Troubleshooting 82. WILL NOT HEAT – GAS – MANUAL TIMER (Sheet 1 of 2) NOTE: The following tests are conducted with Single and stacked units with and without time the Heat Timer in the "ON" position with the delay boards.

  • Page 93: Will Not Heat - Gas - Manual Timer

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – GAS – MANUAL TIMER (Sheet 2 of 2) Note: Voltage checks are referenced to transformer neutral. Correct wiring Correct wiring Is there voltage to the between cabinet Is there voltage across between gas valve input side of the limit and temp...

  • Page 94: Will Not Heat - Gas - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting 83. WILL NOT HEAT – GAS – ROTARY COIN DROP (Sheet 1 of 2) Single and stacked tumblers with and without time delay. Is there voltage at Replace inoperative Is there voltage across airflow switch N.C. switch or correct terminals 1 &...
  • Page 95 Section 7 Electronic Control Troubleshooting WILL NOT HEAT – GAS – ROTARY COIN DROP (Sheet 2 of 2) Note: Voltage checks are referenced to transformer neutral. Correct wiring Correct wiring Is there voltage to the Is there voltage across between cabinet between gas valve input side of the limit and temp...

  • Page 96: Will Not Heat - Steam - Edc Models

    Section 7 Electronic Control Troubleshooting 84. WILL NOT HEAT – STEAM – EDC MODELS (Sheet 1 of 2) Single and stacked Note: Tests are conducted with unit running units. and calling for heat. All voltage checks are referenced to transformer neutral. Correct wiring between terminal 3 Is there voltage on...
  • Page 97 Section 7 Electronic Control Troubleshooting WILL NOT HEAT – STEAM – EDC MODELS (Sheet 2 of 2) Is there voltage to the Replace the stove output side of the stove limit. limit? Is there voltage across Correct wiring to steam valve coil? steam valve coil.
  • Page 98 Section 7 Electronic Control Troubleshooting 85. WILL NOT HEAT – STEAM – MANUAL TIMER (Sheet 1 of 2) Single and stacked units with and without time NOTE: The following tests are conducted with delay boards, manual timers. the Heat Timer in the "ON" position with the machine running and calling for heat.

  • Page 99: Will Not Heat - Steam - Manual Timer

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – STEAM – MANUAL TIMER (Sheet 2 of 2) Note: Voltage checks are referenced to transformer neutral. Correct wiring Is there voltage to the Check for proper between cabinet input side of the Is heat produced? steam supply.
  • Page 100 Section 7 Electronic Control Troubleshooting 86. WILL NOT HEAT – STEAM – OPL MICROPROCESSOR (Sheet 1 of 3) Testing conducted with unit running and calling for heat. Reference voltage to transformer neutral terminal 3. Is there voltage across Is there votlage at Continued on next Replace terminals 2 &...

  • Page 101: Will Not Heat - Steam - Opl Microprocessor

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – STEAM – OPL MICROPROCESSOR (Sheet 2 of 3) The following tests are Column 1 Column 2 conducted with the unit running and calling for heat. Check for proper Is there voltage to Correct wiring Is there voltage at operation and...
  • Page 102 Section 7 Electronic Control Troubleshooting WILL NOT HEAT – STEAM – OPL MICROPROCESSOR (Sheet 3 of 3) Continued from column 2 of previous page. Correct wiring Check for proper between cabinet Is there voltage to the steam supply. limit and terminal 5 Is heat produced? input of the cabinet Correct if necessary.
  • Page 103 Section 7 Electronic Control Troubleshooting 87. WILL NOT HEAT – STEAM – ROTARY COIN DROP (Sheet 1 of 2) Single and stacked tumblers with and without time delay. Is there voltage at Adjust the airflow Is there voltage across airflow switch N.C. switch or replace if terminals 1 &...

  • Page 104: Will Not Heat - Steam - Rotary Coin Drop

    Section 7 Electronic Control Troubleshooting WILL NOT HEAT – STEAM – ROTARY COIN DROP (Sheet 2 of 2) Note: Voltage checks are referenced to transformer neutral. Correct wiring Check for proper Is there voltage to the between cabinet Is heat produced? steam supply.

  • Page 105: Section 8 - Micro Display Control Troubleshooting

    Section 8 Micro Display Control Troubleshooting 88. COINS IGNORED WHEN ENTERED Single and stacked units. Gas and electric heat. Single and three phase power supply. Start coin drop diagnostic tests. Exit diagnostic Does the display on the testing and reset electronic control control.
  • Page 106 Section 8 Micro Display Control Troubleshooting - Control has no display 89. CONTROL HAS NO DISPLAY No Display Control has no display Single and stacked units. Gas, steam and electric heat. Single and three phase supply. Correct wiring Is there voltage across Is there voltage at Replace Electronic between secondary...

  • Page 107: Control Has No Display

    Section 8 Micro Display Control Troubleshooting - Control has no display CONTROL HAS NO DISPLAY 70284701...
  • Page 108 Section 8 Micro Display Control Troubleshooting - Door open indicator 90. DOOR OPEN INDICATOR Door Open Light. Single and stacked Door open units. Gas, steam and Reference voltage electric heat. Single checks to transformer and three phase neutral. supply. Correct wiring Is there voltage at Is there voltage at between secondary...

  • Page 109: Door Open Indicator

    Section 8 Micro Display Control Troubleshooting - Door open indicator DOOR OPEN INDICATOR 70284701...
  • Page 110 Section 8 Micro Display Control Troubleshooting - Motor will not start/run 91. MOTOR WILL NOT START/RUN Single and stacked units. Gas, electric and Note: test conducted with vend steam heat. Single and price satisfied and start button three phase supply. pressed.

  • Page 111: Motor Will Not Start/Run

    Section 8 Micro Display Control Troubleshooting - Motor will not start/run MOTOR WILL NOT START/RUN Correct wiring Is there voltage across between cylinder terminals 1 & 4 of motor and motor cylinder motor? control relay. Correct wiring between fan motor and motor control relay.
  • Page 112 Section 8 Micro Display Control Troubleshooting - Motor will not start/run MOTOR WILL NOT START/RUN (Sheet 1 of 2) 70284701...
  • Page 113 Section 8 Micro Display Control Troubleshooting - Motor will not start/run MOTOR WILL NOT START (Sheet 2 of 2) 70284701...
  • Page 114 Section 8 Micro Display Control Troubleshooting - Unit will not heat (Gas) 92. UNIT WILL NOT HEAT (GAS) (Sheet 1 of 2) Unit Will Not Heat Single and stacked gas (Gas) Note: Tests are conducted with unit running units. and calling for heat. All voltage checks are referenced to transformer neutral.
  • Page 115 Section 8 Micro Display Control Troubleshooting - Unit will not heat (Gas) UNIT WILL NOT HEAT (GAS) (Sheet 2 of 2) No Heat continued. (12) Is there voltage across Replace the stove Is there a flame? Unit operational. the stove limit? limit.

  • Page 116: Unit Will Not Heat (Gas)

    Section 8 Micro Display Control Troubleshooting - Unit will not heat (Gas) 93. UNIT WILL NOT HEAT (GAS) 70284701...
  • Page 117 Section 8 Micro Display Control Troubleshooting - Unit will not heat (Steam) 94. UNIT WILL NOT HEAT (STEAM) (Sheet 1 of 2) Single and stacked Note: Tests are conducted with unit running units. and calling for heat. All voltage checks are referenced to transformer neutral.

  • Page 118: Unit Will Not Heat (Steam)

    Section 8 Micro Display Control Troubleshooting - Unit will not heat (Steam) UNIT WILL NOT HEAT (STEAM) (Sheet 2 of 2) No Heat continued. (12) Correct wiring Is there voltage across Replace the stove between terminal 3 the stove limit? limit.
  • Page 119 Section 8 Micro Display Control Troubleshooting - Unit will not heat (Steam) UNIT WILL NOT HEAT (STEAM) 70284701...
  • Page 120 Section 8 Micro Display Control Troubleshooting - Unit will not heat (Electric) 95. UNIT WILL NOT HEAT (ELECTRIC) (Sheet 1 of 2) Single and stacked Note: Tests are conducted with unit running units. and calling for heat. All voltage checks are referenced to transformer neutral.

  • Page 121: Unit Will Not Heat (Electric)

    Section 8 Micro Display Control Troubleshooting - Unit will not heat (Electric) UNIT WILL NOT HEAT (ELECTRIC) (Sheet 2 of 2) No Heat continued. Note: Please make the oppropriate adjustments if your (12) unit is single phase. Is there voltage across Replace the stove the stove limit? limit.
  • Page 122 Section 8 Micro Display Control Troubleshooting - Unit will not heat (Electric) UNIT WILL NOT HEAT (ELECTRIC) 70284701...

  • Page 123: Error Codes

    Section 8 Micro Display Control Troubleshooting - Error codes WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the dryer(s) before servicing. • Close gas shut-off valve to gas dryer(s) before servicing. •...

  • Page 124: Gas Models

    Section 8 Micro Display Control Troubleshooting - Error codes Gas models Schematic 70284701...

  • Page 125: Connection Diagram

    Section 8 Micro Display Control Troubleshooting - Error codes Gas models Connection diagram 70284701...

  • Page 126: Steam Models

    Section 8 Micro Display Control Troubleshooting - Error codes Steam models Schematic 70284701...

  • Page 127: Connection Diagram

    Section 8 Micro Display Control Troubleshooting - Error codes Steam models Connection diagram 70284701...

  • Page 128: Electric Models

    Section 8 Micro Display Control Troubleshooting - Error codes Electric models Schematic 70284701...

  • Page 129: Connection Diagram

    Section 8 Micro Display Control Troubleshooting - Error codes Electric models Connection diagram 70284701...
  • Page 130 Section 8 Micro Display Control Troubleshooting - Error codes Notes 70284701...

  • Page 131: Section 9 - Netmaster Troubleshooting

    Section 9 NetMaster Troubleshooting WARNING To reduce the risk of electric shock, fire, explosion, serious injury or death: • Disconnect electric power to the tumbler before servicing. • Close gas shut-off valve to gas tumbler before servicing. • Close steam valve to steam tumbler before servicing. •...

  • Page 132: Coins Ignored When Entered

    Section 9 NetMaster Troubleshooting - Coins ignored when entered 98. COINS IGNORED WHEN ENTERED Single and stacked units. Gas and electric heat. Single and three phase power supply. Start coin drop diagnostic tests. Exit diagnostic Does the display on the testing and reset electronic control control.
  • Page 133 Section 9 NetMaster Troubleshooting - Control has no display 99. CONTROL HAS NO DISPLAY No Display Control has no display Single and stacked units. Gas, steam and electric heat. Single and three phase supply. Correct wiring Is there voltage across Is there voltage at Replace Electronic between secondary...

  • Page 134: Control Has No Display

    Section 9 NetMaster Troubleshooting - Control has no display CONTROL HAS NO DISPLAY (Sheet 1 of 2) 70284701...
  • Page 135 Section 9 NetMaster Troubleshooting - Control has no display CONTROL HAS NO DISPLAY (Sheet 2 of 2) TMB269S TMB269S 70284701...
  • Page 136 Section 9 NetMaster Troubleshooting - Door open indicator 100. DOOR OPEN INDICATOR Single and stacked units. Gas, steam and Reference voltage electric heat. Single checks to transformer and three phase neutral. supply. Correct wiring Is there voltage at Is there voltage at between secondary H2-1 on the Electronic Replace Control.
  • Page 137 Section 9 NetMaster Troubleshooting - Door open indicator Please see following 2 pages for wiring diagram information. 70284701...

  • Page 138: Door Open Indicator

    Section 9 NetMaster Troubleshooting - Door open indicator DOOR OPEN INDICATOR (Sheet 1 of 2) 70284701...
  • Page 139 Section 9 NetMaster Troubleshooting - Door open indicator DOOR OPEN INDICATOR (Sheet 2 of 2) TMB270S TMB270S 70284701...
  • Page 140 Section 9 NetMaster Troubleshooting - Motor will not start/run 101. MOTOR WILL NOT START/RUN (Sheet 1 of 2) Motor Start/Run Motor (cylinder/fan)will not Single and stacked units. Gas, electric and start/run Note: test conducted with vend steam heat. Single and price satisfied and start button three phase supply.
  • Page 141 Section 9 NetMaster Troubleshooting - Motor will not start/run MOTOR WILL NOT START/RUN (Sheet 2 of 2) Correct wiring Is there voltage across between cylinder terminals 1 & 4 of motor and motor cylinder motor? control relay. Does the cylinder Replace cylinder motor run? motor.

  • Page 142: Motor Will Not Start/Run

    Section 9 NetMaster Troubleshooting - Motor will not start/run MOTOR WILL NOT START/RUN (Sheet 1 of 2) 70284701...
  • Page 143 Section 9 NetMaster Troubleshooting - Motor will not start/run MOTOR WILL NOT START/RUN (Sheet 2 of 2) TMB271S TMB271S 70284701...
  • Page 144 Section 9 NetMaster Troubleshooting - Motor will not start/run MOTOR WILL NOT START (Sheet 1 of 2) 70284701...
  • Page 145 Section 9 NetMaster Troubleshooting - Motor will not start/run MOTOR WILL NOT START (Sheet 2 of 2) TMB272S TMB272S 70284701...
  • Page 146 Section 9 NetMaster Troubleshooting - Unit will not heat (Gas) 102. UNIT WILL NOT HEAT (GAS) (Sheet 1 of 2) Note: Tests are conducted with unit running and calling for heat. All voltage checks are referenced to transformer neutral. Correct wiring Is there voltage at between terminal 3 Correct wiring...

  • Page 147: Unit Will Not Heat (Gas)

    Section 9 NetMaster Troubleshooting - Unit will not heat (Gas) UNIT WILL NOT HEAT (GAS) (Sheet 2 of 2) (12) Is there voltage across Replace the stove Is there a flame? Unit operational. the stove limit? limit. (13) Is there voltage to Correct wiring terminal 2 of between terminal 2...
  • Page 148 Section 9 NetMaster Troubleshooting - Unit will not heat (Gas) UNIT WILL NOT HEAT (GAS) (Sheet 1 of 2) 70284701...
  • Page 149 Section 9 NetMaster Troubleshooting - Unit will not heat (Gas) UNIT WILL NOT HEAT (GAS) (Sheet 2 of 2) TMB273S TMB273S 70284701...
  • Page 150 Section 9 NetMaster Troubleshooting - Unit will not heat (Steam) 103. UNIT WILL NOT HEAT (STEAM) (Sheet 1 of 2) Unit Will Not Heat (Steam) Single and stacked Note: Tests are conducted with unit running units. and calling for heat. All voltage checks are referenced to transformer neutral.
  • Page 151 Section 9 NetMaster Troubleshooting - Unit will not heat (Steam) UNIT WILL NOT HEAT (STEAM) (Sheet 2 of 2) No Heat continued. (12) Is there voltage across Replace the stove the stove limit? limit. (13) Correct wiring Is there voltage across between steam the coil of the steam valve? valve and stove...

  • Page 152: Unit Will Not Heat (Steam)

    Section 9 NetMaster Troubleshooting - Unit will not heat (Steam) UNIT WILL NOT HEAT (STEAM) (Sheet 1 of 2) 70284701...
  • Page 153 Section 9 NetMaster Troubleshooting - Unit will not heat (Steam) UNIT WILL NOT HEAT (STEAM) (Sheet 2 of 2) TMB274S TMB274S 70284701...
  • Page 154 Section 9 NetMaster Troubleshooting - Unit will not heat (Electric) 104. UNIT WILL NOT HEAT (ELECTRIC) (Sheet 1 of 2) Single and stacked Note: Tests are conducted with unit running units. and calling for heat. All voltage checks are referenced to transformer neutral.
  • Page 155 Section 9 NetMaster Troubleshooting - Unit will not heat (Electric) UNIT WILL NOT HEAT (ELECTRIC) (Sheet 2 of 2) No Heat continued. Note: Please make the oppropriate adjustments if your (12) unit is single phase. Is there voltage across Replace the stove the stove limit? limit.

  • Page 156: Unit Will Not Heat (Electric)

    Section 9 NetMaster Troubleshooting - Unit will not heat (Electric) UNIT WILL NOT HEAT (ELECTRIC) (Sheet 1 of 2) 70284701...
  • Page 157 Section 9 NetMaster Troubleshooting - Unit will not heat (Electric) UNIT WILL NOT HEAT (ELECTRIC) (Sheet 2 of 2) TMB275S TMB275S 70284701...
  • Page 158 Section 9 NetMaster Troubleshooting - Unit will not heat (Electric) Notes 70284701...

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