Dexter Laundry DN20X2 Service And Parts Data
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Dexter Laundry DN20X2 Service And Parts Data

Opl stack dryer
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USE THE BLUE TABS LOCATED ON THE
RIGHT AND LEFT SIDES OF THE FOLLOWING
DOCUMENT TO ADVANCE TO EACH SECTION.
8533-108-001 10/22

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Summary of Contents for Dexter Laundry DN20X2

  • Page 1 USE THE BLUE TABS LOCATED ON THE RIGHT AND LEFT SIDES OF THE FOLLOWING DOCUMENT TO ADVANCE TO EACH SECTION. 8533-108-001 10/22...
  • Page 2 OPL Stack Dryer DN20X2 Caution! To reduce the risk of damage to the Water Inlet Valve, do not supply inlet water with a temperature that exceeds 70˚ C.
  • Page 3 Equipment Safety Warnings Indicates an imminently hazardous situation, Symbols and Terminology Used in this Equipment which if not avoided, will result in death or seri- ous injury. Indicates a potentially hazardous situation, Warning! Do not operate equipment if door glass is which if not avoided could result in death or damaged in any way.
  • Page 4 WARNING WARNING • All Dryers must be installed in accordance to Children should be supervised to all applicable electrical, plumbing and all other local ensure they do not operate or play codes. in or around equipment. • These installation and operation instructions are for use by qualified personnel only.
  • Page 5 Warning! Do not operate equipment if door glass is Prohibited! Do not attempt to open, touch, or pro- damaged in any way. ceed before referring to the manual or unless quali- fied. Mandatory! Read all supporting documentation be- Warning! Keep clear of rotating parts. fore operating or maintaining equipment.

  • Page 6: Table Of Contents

    Cool Down ........37 spontaneous combustions, do not dry: End of Cycle ........37 Wiring Diagram for DN20X2 Dryer ..40 • Items containing foam rubber, or any Wiring Schematic for DN20X2 Dryer ...41 similarly textured rubber-like materials.
  • Page 7 Section 6: High Limit Thermostat Locations and Notes Parts Data Functions .......44-45 Pressure Regulator Adjustment ..45 Cabinet Group ......62-65 Heat Sensor ........45 Rear Panel & Cover Group ....66 Electronic Control Removal ....45 Burner Housing Group ....68-69 Membrane Switch Replacement ..45 Temperature Sensor Testing ....45 Bearing Housing/Tumbler Group ...

  • Page 8: Specifications

    Express Stack Dryer Specifications Model DN20X2ND-15 Capacity: Dry Weight Capacity - lb (kg) 2 x 20 (2 x 9.1) Cylinder Volume (per tumbler) - cu ft (L) 7 (198.2) Speed: Tumbler Speed - RPM Motor Size (per tumbler) - hp (kW) 0.3 (0.25) Airflow (per tumbler): 60 Hz Model - cfm (M3/min)
  • Page 9 Electrical Requirements: Gas Models (per stack dryer): Model Volts / Hz / Phase / Wiring Circuit Breaker Amps / Running Amps / Wire Size 208-240 / 60 / 1 / 2 wire + ground 15 / 3.8 / #12 120 / 60 / 1 / 2 wire + ground 15 / 7.8 / #12 230 / 50 / 1 / 2 wire + ground 15 / 3.8 / 3.5 mm2...
  • Page 10 Notes Notes Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...

  • Page 11: Installation And Operation

    DRYER INSTALLATION 1. CODE CONFORMITY: All commercial dryer installations must conform with local codes, or in the absence of local codes, with the latest edition of the National Fuel Gas Code ANSI Z223.1. Canadian installations must comply with the current Standard CAN/CGA-B149 (.1 or .2) Installation Code for Gas Burning Appliances or Equipment, and local codes if applicable.

  • Page 12: 3. Make-Up Air

    6. EXHAUST INSTALLATION . (Refer to Figure 3) Exhausting of the dryer(s) should be planned 3. MAKE-UP AIR: Adequate make-up air must be supplied to replace air exhausted by dryers on and constructed so that no air restrictions occur. Any restriction due to pipe size or type of all types of installations.
  • Page 13   NOTE: A small diameter duct will restrict airflow; a large diameter duct will reduce air velocity - both contributing to lint build up. An inspection door should be provided for 7. DRYER IGNITION (SOLID STATE IGNITION): The solid-state ignition system lights the main burner gas by spark. periodic clean out of the main duct.
  • Page 14 Touch Pad Description This touch pad switch will start the operation of a dry cycle if pressed and released once. Pressing and holding this touch pad switch will display the current Start temperature of the dryer heat sensor as long as it is held in the depressed Description position.

  • Page 15: Operating Instructions

    Operating Instructions During the dry cycle, either pressing the STOP touch pad key on the dryer controller or opening the dryer loading door, will stop the dry cycle and not clear it. If you press the STOP touch pad key on the controller To dry a load of items, you must choose one of the five-programmed dry cycles.
  • Page 16 Procedure Temporary Dryer Controller Programming Example 1. Make sure the dryer is not in a dry cycle. The 4-digit numeric display on the dryer controller will show “LOAd” when the dryer is not in a dry cycle. Requirements: Dry a load with 40 minutes of actual heat at 18SoF and five minutes of cool down. 2.

  • Page 17: Programming

    will switch off, the dry cycle L.E.D. and programming L.E.D. will remain on, and the cool down L.E.D. will Permanent Dryer Controller Programming illuminate. The cool down time will also be shown on the 4-digit numeric display. Press and release the UP or DOWN arrow keys to change the cool down time. Once either of the arrow keys is pressed, the cool down L.E.D.
  • Page 18 TRANSIENT VOLTAGE SURGE SUPPRESSORS Press and release the UP arrow touch pad key three times until the dryer controller display shows the Like most electrical equipment your new machine can be damaged or have its life shortened by voltage number “195”. surges due to lightning strikes which are not covered by factory warranty.
  • Page 19 Notes Notes Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...

  • Page 20: Wiring Schematics

    60HZ Wiring Schematic Dryer Idle - No Coins Added Top Dryer Used For This Example 110 VAC 60Hz is supplied to the main power terminal block, L1 power, N=neutral, plus ground. BLK/Red coming off of L1 and BLK/BLU coming from N power the R1, and R2 motor relays. Red wire from L1 and the blue wire from N supply power and neutral to the step down transformer.

  • Page 21: Over Temperature Thermostat

    Manual Reset Safety Shutoff Over-Temperature Thermostat Top Dryer Used For This Example   This thermostat is manually reset by pushing in the red button. The Over Temperature Thermostat is a  safety backup for the entire Heat Circuit and located in the recirculation chamber area on the side of the ...
  • Page 22 Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 23 Notes Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...

  • Page 24: Service Procedures

    Service Procedures Clothes Door Removal 1. The clothes door may be removed from the hinge bracket by unscrewing and removing the allen- head pivot screw located at the door upper hinge point. 2. Next lean the door out of the top of the hinge bracket and lift the door from the bottom hinge pin.

  • Page 25: Pressure Regulator Adjustment

    B. Manual Reset Over temperature Safety Thermostats- The second hi-limit thermostat is located on the right side of each burner housing as you view from the back of the Temperature Testing machine. It is just above the gas valve and covered by a guard with a small access hole. To check the temperature in the dryer tumbler, press and hold the upper or lower start button for the 1.

  • Page 26: Intermediate Pulley And Tension Arm Removal

    Intermediate Pulley And Tension Arm Removal 3. The black colored hi-voltage wire (spark plug type) plugs onto the post connector on the module, 1. The intermediate pulley is retained with a snap ring. Remove the snap ring and the pulley slides and the multi-wire plug fits into the side of the module.

  • Page 27: Ignition System Checkout

    Ignition System-Checkout Adjustment Of Cylinder Assembly With Front Panel Removed 1. If flame is present during “Trial For Ignition” period but the system shuts down, there may be 1. Loosen the two top adjusting bolts and two bottom adjusting nuts and lock nuts holding the an improper ground.
  • Page 28 Notes Notes Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...

  • Page 29: Troubleshooting

    Trouble Shooting Electronic Control Diagnostic Lights The electronic control has 6 diagnostic lights to aid in service of the dryer. Each pocket has indicator lights for the motor circuit, door switch circuit, and the heat circuit. When the electronic control is carefully unlocked and moved forward these lights are visible on the circuit board.

  • Page 30: Trouble Shooting Fault Codes

    Trouble Shooting Fault Codes Probable Symptom Suggested Remedy Cause Shorted sensor or shorted sensor wire harness Open sensor or sensor wire harness disconnected Tumbler turns Glass fuse Check small glass control fuse in back of dryer. but no spark Replace if failed. EEPROM corrupted.
  • Page 31 Symptom Probable Cause Suggested Remedy Symptom Probable Cause Suggested Remedy Erratic display Initial Start-up If erratic on initial start-up, leave power Tumbler turns, Gas supply Make sure gas supply is working. on for approximately one hour and check ignition sparks, machine operation again.

  • Page 32: Parts Data

    Kits, Assemblies, & Common Parts Description T 20x2 LP to Natural Conversion Kit for White Rodgers 9732-142-004 Kit - A to C series Conversion, Black, 24v 9732-307-004 Temperature Probe 9501-006-002 Controls 9857-187-003 Ignition Control Box 9857-251-001 Electrode Assembly, Ignition 9875-002-003 Thermostat, Hi-Limit 9576-203-002 Termostat, Overtemp...
  • Page 33 Dryer Cabinet Group Cabinet Group 2, 3 Description T-20X2 Panel Assy., Front- Upper (SS) 9989-610-004 Insulation Front Panel, half moon (top) 9277-064-001 Insulation Front Panel, half moon (bottom) 9277-064-002 Screw, FLHDCR, 10B x- 1 3/4 9545-008-014 Washer, Finish, #10 8641-585-001 Nut, Spring 8640-399-001 Hinge ,Backup Plate...

  • Page 34: Cabinet Group

    Dryer Cabinet Group Cabinet Group Continued Key Description T-20X2 Escutcheon 9994-044-001 Trim, Overlay-Upper Black 9435-059-001 Screw, #4-40 x 3/16 9545-020-009 Nameplate Stack Dryer Express Black 9412-251-001 Lint Drawer Assembly Black 9866-008-005 Drawer, Front PTD 9974-016-002 Washer, Flat, #10 8641-581-006 Washer, Curved-Spring 8641-569-004 Nut, 10-32 8640-413-007...

  • Page 35: Rear View

    Rear View Photos Description T-20X2 Switch Assy, Air Flow 9801-095-001 Switch, Air Flow 9539-461-009 Bracket, Switch- Air Flow 9029-174-001 Actuator, Switch 9008-007-001 Pin, Cotter 9451-169-002 Screw 4-40 x 5/8” 9545-020-001 Nut, Special Twin .#4-40 8640-401-001 Shield, Switch 9550-169-003 Screw 10 Bx 1/4” 9545-008-001 Motor, Drive 9376-332-001...
  • Page 36 Rear View Photos Description T-20X2 Arm Assy-Tension, Complete 9861-022-001 Washer, Flat 8641-581-035 Ring-Retaining 9487-200-003 Pulley Assy, Intermediate with bronze flange bear- 9908-053-003 Bearing - Bronze Flange 9036-145-002 Spacer-Shaft (See Tumbler Group for Expandrd 9538-164-001 View) Tolerance Ring 9487-234-005 Pulley, Driven 9908-052-002 Washer -Flat 8641-581-026...
  • Page 37 Dryer Back Panels and Guards Air Flow Switch Assembly Description Part Number Guard, Drive 9208-144-001 Key Description T-20X2 Screw, 10AB x 3/8 9545-008-024 Air Flow switch Assy 9801-095-001 Panel, Drive Guard, 9208-131-001 Bracket-Airflow switch 9029-174-001 Guard-Small, upper 9208-134-001 Shield-Switch 9550-169-003 Guard-side,lower 9208-132-001 Switch-Micro...
  • Page 38 Bearing Housing Group Tumbler Group Key Description T-20X2 Bearing Housing Complete Assy (Includes bearings 9803-160-003 Key Description T-20X2 & Spacer) Tumbler Assy Complete W/Spider (GALV) 9848-156-001 Housing, Bearing 9241-161-002 Tumbler Assy (Galvinized) 9848-155-001 Spacer, Bearing 9538-139-002 Rod, Tumbler 9497-019-004 Bearing, Ball, Front & Rear 9036-130-001 Washer, Special 8641-554-001...
  • Page 39 Dryer Burner Housing Group Key Description T-20X2 Housing Assembly, Burner (All sheet metal parts not 9803-221-001 listed) Panel, Back Burner Housing 9454-949-001 Screw, 10B X 1/4” 9545-008-001 Angle, Burner Support 9003-220-001 Screw, 10AB x 3/8” 9545-008-024 Burner, Main 9048-023-001 Screw 10AB x 3/8” 9545-008-006 Electrode-ignition 9875-002-003...

  • Page 40: Control Assembly Group

    Control Assembly Group Key Description T-20X2 Control, Rear 9857-250-001 Wrapper-controlbox 9636-219-001 Panel-upper,controlbox 9454-974-001 Panel-lower,controlbox 9454-973-001 Screw-hxwshrundrcuthd,10abx3/8 9545-008-024 Wireasy-grn/yel,7" 8220-137-002 Screw-hxwsrhdsl,10-32ttx1/2grn 9545-008-027 Lockwasher-exttooth,#10 8641-582-006 Terminalblockassembly-power 9897-026-002 Terminalblockassembly-power 9897-026-001 Screw-panhdcr,#8abx1/2 9545-045-012 Transformer 8711-013-001 Screw-hxwshrundrcuthd,10abx3/8 9545-008-024 Controlsassy-ignition 9857-182-001 Screw-hxwshd,10abx3/4 9545-008-018 Wireasy-highvoltage,#8,181/2" 9631-403-008 Wireasy-highvoltage,#7,291/4" 9631-403-009 Wiringharness-ignitioncontrol Upper 9627-867-005...

  • Page 41: Door Switch Group

    Door Switch Group Control Group Key Description T-20X2 Door Switches 9539-487-001 Key Description T-20X2 Bracket-Mounting lint tray switch 9029-297-001 Control Assembly 9857-187-003 Conduit-Wire 6068-049-001 Tray Assembly 9826-006-001 Grommet Wire 1/2 i.d. 9029-089-001 PCB Assembly Control 9471-017-001 PCB Assembly Display 9471-018-001 Screw-panhdcr, #6-32x1/2(ss) 9545-044-010 Lockwasher-exttooth, #6...
  • Page 42 Notes Section 7: Electric Heated 60Hz Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 43 DN20X2 -84 DN20X2 -84 Key Description T-20X2 Key Description T-20X2 Wire-BLK, 26” 8220-078-024 Block-Power, 3-Pole 9897-037-001 Wire-BLK, 8” 8220-057-015 Block-Power, 1-Pole 9897-038-001 Wire-WHT, 5.5”, 18 AWG 8220-057-021 Wiring-Diagram/Schematic 9506-858-001 Wire-BLK, 9.5”, 10 AWG 8220-057-023 Booklet-Owners 8514-265-001 Wire-BLK, 36”, 12 AWG 8220-057-031 Wire-RED, 36”, 12 AWG...
  • Page 44 Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 45 DN20X2 -85 DN20X2 -85 Key Description T-20X2 Key Description T-20X2 Wire-BLK, 26” 8220-078-024 Block-Power, 3-Pole 9897-037-001 Wire-BLK, 8” 8220-057-015 Block-Power, 1-Pole 9897-038-001 Wire-WHT, 5.5”, 18 AWG 8220-057-021 Wiring-Diagram/Schematic 9506-859-001 Wire-BLK, 9.5”, 10 AWG 8220-057-023 Booklet-Owners 8514-265-001 Wire-BLK, 36”, 12 AWG 8220-057-031 Wire-RED, 36”, 12 AWG...
  • Page 46 Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 47 DN20X2 -86 DN20X2 -86 Key Description T-20X2 Key Description T-20X2 Wire-BLK, 26” 8220-078-024 Block-Power, 3-Pole 9897-037-001 Wire-BLK, 8” 8220-057-014 Block-Power, 1-Pole 9897-038-001 Wire-WHT, 5.5”, 18 AWG 8220-057-021 Wiring-Diagram/Schematic 9506-860-001 Wire-BLK, 9.5”, 10 AWG 8220-057-023 Booklet-Owners 8514-265-001 Wire-BLK, 36”, 12 AWG 8220-057-031 Wire-RED, 36”, 12 AWG...
  • Page 48 Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 49 DN20X2 -87 DN20X2 -87 Key Description T-20X2 Key Description T-20X2 Wire-BLK, 26” 8220-078-024 Block-Power, 3-Pole 9897-037-001 Wire-BLK, 8” 8220-057-016 Block-Power, 1-Pole 9897-038-001 Wire-WHT, 5.5”, 18 AWG 8220-057-021 Wiring-Diagram/Schematic 9506-861-001 Wire-BLK, 9.5”, 10 AWG 8220-057-023 Booklet-Owners 8514-265-001 Wire-BLK, 36”, 12 AWG 8220-057-031 Wire-RED, 36”, 12 AWG...
  • Page 50 Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 51 Notes Section 8: 50 Hz Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 52 Notes Section 9: 50 Hz Electric Heated Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...

  • Page 53: Maintenance

    Notes Section 10: Maintenance Part # 8533-108-001 10/22 Part # 8533-108-001 10/22...
  • Page 54 Preventative Maintenance Daily Step 1: Clean the lint screen free of lint and other debris. Use a soft brush and Hot water if necessary. Step 2: Check the lint screen for tears. Replace if necessary. Step 3: Clean lint from the lint screen compartment. Step 4: Inspect felt seal on lint screen assembly, replace if needed.

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