Dexter Laundry DN20X2 Guide

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

8533-108-001 10/22
Service and Parts Data
OPL Stack Dryer
DN20X2
Indicates an imminently hazardous situation, which if
not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation, which if not
avoided could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may
also be used to alert against unsafe practices. Minor
burns, pinch points that result in bruises and minor
chemical irritation.
Indicates information or a company policy that relates
directly or indirectly to the safety of personnel or protec-
tion of property.
This is the user caution symbol. It indicates a condition
where damage to the equipment resulting in injury to
the operator could occur if operational procedures are
not followed. TO REDUCE THE RISK OF DAMAGE OR
INJURY, refer to accompanying documents; follow all
steps or procedures as instructed.
This is the electrical hazard symbol. It indicates that
there are DANGEROUS HIGH VOLTAGES PRESENT inside
the enclosure of this product. TO REDUCE THE RISK OF
FIRE OR ELECTRIC SHOCK, do not attempt to open the
enclosure or gain access to areas where you are not
instructed to do so. REFER SERVICING TO QUALIFIED
SERVICE PERSONEL ONLY
Caution! There are sharp edges on various sheet metal
parts internal to the enclosure. Use safety consciousness
when placing or moving your hands while working in the
interior of this equipment.
Caution! To reduce the risk of damage to the Water Inlet
Valve, do not supply inlet water with a temperature that
exceeds 70˚ C.
Caution! To reduce the risk of re or explosion, do not
operate this equipment in any hazardous classied
(ATEX) environment.
Equipment Safety Warnings
Symbols and Terminology Used in this Equipment
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50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
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Machine
Service
Electrical
Wiring

Warning! Do not operate equipment if door glass is
damaged in any way.
Warning! Keep clear of rotating parts.
Prohibited! Do not enter this equipment or space.
Prohibited! Do not step or stand on this equipment.
Prohibited! Do not operate without all guards and covers in
place.
Prohibited! Do not operate without all guards and covers in
place.
Prohibited! Do not wash or Dry clothing impregnated with
ammable liquids (petrochemical).
Prohibited! Do not allow children to play in or around
equipment.
Equipment Safety Warnings
Symbols and Terminology Used in this Equipment
Indicates an imminently hazardous situation,
which if not avoided, will result in death or seri-
ous injury.
Indicates a potentially hazardous situation,
which if not avoided could result in death or
serious injury.
Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderate injury. It may also be used to alert
against unsafe practices. Minor burns, pinch
points that result in bruises and minor chemical
irritation.
Indicates information or a company policy that
relates directly or indirectly to the safety of per-
sonnel or protection of property.
This is the user caution symbol. It indicates a
condition where damage to the equipment re-
sulting in injury to the operator could occur if
operational procedures are not followed.
TO REDUCE THE RISK OF DAMAGE OR INJURY,
refer to accompanying documents; follow all
steps or procedures as instructed.
This is the electrical hazard symbol. It indicates
that there are DANGEROUS HIGH VOLTAGES
PRESENT inside the enclosure of this product.
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, do not attempt to open the enclosure or
gain access to areas where you are not instruct-
ed to do so. REFER SERVICING TO QUALIFIED
SERVICE PERSONEL ONLY
Caution! To reduce the risk of re or explosion,
do not operate this equipment in any hazardous
classied (ATEX) environment.
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50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

• All Dryers must be installed in accordance to
all applicable electrical, plumbing and all other local
codes.
• These installation and operation instructions are
for use by qualied personnel only. To avoid injury
and electrical shock, do not perform any servicing
other than that contained in the installation and op-
eration instructions, unless qualied.
Do not install Equipment in an explosive atmosphere.
•Care must be stressed with all foundation work to
ensure a stable unit installation, eliminating pos-
sibilities of excessive vibration.
•Foundation must be level within 13 mm to ensure
proper washer operation.
Do not operate washer or Dryer if door glass is dam-
aged in any way.
Do not wash or Dry clothing impregnated with am-
mable liquids (petrochemical).
WARNING
Children should be supervised to
ensure they do not operate or play
in or around equipment.
Keep all panels in place to protect against electrical
shock and injury and add rigidity to washer.
WARNING
This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a
person responsible for their safety.
A washer should not be allowed to operate if any of the following occur:
• Excessive high water level.
• Machine is not connected to a properly earthed circuit.
• Door does not remain securely locked during the entire cycle.
• Vibration or shaking from an inadequate mounting or foundation
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Parts
Data
50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

Warning! Do not operate equipment if door glass is
damaged in any way.
Warning! Keep clear of rotating parts.
Prohibited! Do not enter this equipment or space.
Prohibited! Do not step or stand on this equip-
ment.
Prohibited! Do not operate without all guards and
covers in place.
Prohibited! Do not operate without all guards and
covers in place.
Prohibited! Do not wash or Dry clothing impreg-
nated with ammable liquids (petrochemical).
Prohibited! Do not allow children to play in or
around equipment.
Prohibited! Do not attempt to open, touch, or pro-
ceed before referring to the manual or unless quali-
ed.
Mandatory! Read all supporting documentation be-
fore operating or maintaining equipment.
Mandatory! Disconnect power before servicing
equipment.
Mandatory! Lock out and tag out before servicing
this equipment.
Mandatory! Children should be supervised to ensure
they do not operate equipment.
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Parts
Data
50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

Dry only fabrics washed in water
to avoid the risk of fire, including
spontaneous combustions, do not dry:
• Items containing foam rubber, or any
similarly textured rubber-like materials.
• Any items on which you have used a
cleaning solvent or which contain amm.
able liquids or solids, such as naptha,
gasoline, or other oils or waxes.
Table of Contents
Section 1:
Specications .............................. 14-15
Installation Dimensions .....................16
Section 2:
Installation and Operation
Installation Clearances ......................20
Make Up Air .....................................21
Electrical Requirements .....................21
Gas Requirements ............................21
Burner Set Up ..................................21
Exhaust Installation ..................... 22-23
Description of Control .................. 24-25
Operating Instructions ................. 27-28
Programming .............................. 28-33
Section 3:
Wiring Schematics
Dryer Idle ........................................36
Motor Starting and Running...............36
Heat Circuit......................................36
Over Temperature Thermostat...........37
Cool Down .......................................37
End of Cycle.....................................37
Wiring Diagram for DN20X2 Dryer......40
Wiring Schematic for DN20X2 Dryer ...41
Section 4:
Service Procedures
Clothes Door Removal.......................44
Clothes Door Latch Adjustment..........44
Door Switch Removal and Installation.44
Installation of Clothes Door Window and
Gasket.......................................... 44
Dexter Safety Guidelines
WARNING
For your safety, the information in this manual
must be followed to minimize the risk of re
or explosion or to prevent property damage,
personal injury or loss of life.
IF YOU SMELL GAS:
• Do not try to light any appliance.
• Do not touch any electrical switch: do not use any
telephone in your building.
• Clear the room, building or area of all occupants.
• Imm.ediately call your gas supplier from a
neighbor’s telephone.
• Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the
re department. Installation and service must be
performed by a qualied installer, service agency or
the gas supplier.
To activate your warranty, be sure to return
your red warranty form to the factory. Please
have serial number and model ready when
calling for assistance.
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Notes
Parts
Data
50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

High Limit Thermostat Locations and
Functions...............................44-45
Pressure Regulator Adjustment ..........45
Heat Sensor .....................................45
Electronic Control Removal ................45
Membrane Switch Replacement .........45
Temperature Sensor Testing ..............45
Temperature Testing .........................46
Temperature Sensor Removal ............46
Upper Front Panel Removal ...............46
Lower Front Panel Removal ...............46
Final Drive Belt Replacement .............46
Motor Drive Belt Replacement............46
Tumbler Pulley Removal/ Installation ..46
Intermediate Pulley and Tension Arm
Removal .....................................47
Tension Arm Support Assembly
Adjustment .................................47
Motor and Blower Assemly Removal
and Installation ...........................47
Air Flow Switch Operation and
Adjustment .................................47
Ignition Transformer Fuse..................47
Ignition Control Transformer ..............47
Electronic Ignition Module ............ 47-48
Spark Ignition Module Removal..........48
Ignition System Function/Sequence....48
Ignition System Checkout ..................49
Spark Electrode Assembly Removal ....49
Gas Valve & Manifold Removal ...........49
Main Burner Orice Removal..............49
Main Burner Removal ........................49
Recirculation Chamber Inspection ......49
Cylinder Removal..............................49
Adjustment of Cylinder Assembly
with Front Panel Removed............50
Tumbler Through Bolt Access Cover ...50
Bearing Housing Removal..................50
Section 5:
Troubleshooting
Trouble Shooting Fault Codes ............55
Troubleshooting Tips.................... 55-58
Section 6:
Parts Data
Cabinet Group ............................. 62-65
Rear Panel & Cover Group.................66
Burner Housing Group .................68-69
Bearing Housing/Tumbler Group ... 70-71
Rear View ................................... 72-75
Control Assembly Group............... 76-77
Door Switch Group ...........................78
OPL Control .....................................79
Section 7:
60 Hz Electric Heated Models
-84..................................................82
-85..................................................86
-86..................................................90
-87..................................................94
Section 8:
50Hz Models
Section 9:
50Hz Electric Heated Models
Section 10:
Maintenance
Regular Required Maintenance......... 104
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Notes
Parts
Data
50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

Express Stack Dryer Specications
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 51
Motor Size (per tumbler) - hp (kW) 0.3 (0.25)
Airow (per tumbler):
60 Hz Model - cfm (M3/min) 370 (10.5)
50 Hz Model - cfm (M3/min) 300 (8.5)
Dimensions:
Cabinet Height - in (cm) 68 1/2 (174)
Cabinet Width - in (cm) 27 (68.6)
Cabinet Depth - in (cm) 44 5/8 (113.3)
Door Opening - in (cm) 18 1/8 (46)
Floor to Lower Door Bottom - in (cm) 8 1/2 (21.6)
Floor to Upper Door Bottom - in (cm) 42 (106.7)
Cylinder Diameter - in (cm) 25 1/2 (64.8)
Cylinder Depth - in (cm) 24 (61)
Lint Screen Area (per tumbler) - sq in (sq cm) 285 (1839)
Weight:
Net Weight - lb (kg) 615 (279)
Shipping Information:
Shipping Weight - lb (kg) 650 (295)
Shipping Height - in (cm) 74 (188)
Shipping Width - in (cm) 31.5 (80)
Shipping Depth - in (cm) 49 (124.5)
Gas Requirements (Gas Models Only):
Gas Supply Connection - in (mm) 1/2 (12.7)
Natural Gas Supply (Water Column) - in (cm) 5-8 (12.7 - 20.3)
LP Gas Supply (Water Column) - in (cm) 11 1/2-14 (29.2-35.6)
Gas Usage (Gas Models Only):
60Hz Model (per tumbler) - BTU/hr (kW) 56,000 (16.4)
50Hz Model (per tumbler) - BTU/hr (kW) 47,000 (13.8)
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Part # 8533-108-001 10/22
Section 1:
Specications
Parts
Data
50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

Electrical Requirements:
Gas Models (per stack dryer):
Model Volts / Hz / Phase / Wiring Circuit Breaker Amps / Running Amps / Wire Size
-15 208-240 / 60 / 1 / 2 wire + ground 15 / 3.8 / #12
-15 120 / 60 / 1 / 2 wire + ground 15 / 7.8 / #12
-39 230 / 50 / 1 / 2 wire + ground 15 / 3.8 / 3.5 mm2
-59 230 / 50 / 1 / 2 wire + ground 15 / 3.8 / 3.5 mm2
Electric Models (per tumbler):
Model kW / Volts / Hz / Phase / Wiring Circuit Breaker Amps / Running Amps / Wire Size
-82 15 / 400 / 50 / 3 / 4 wire + ground 30 / 30 / 8.4 mm2
-84 15 / 208 / 60 / 3 / 4 wire + ground 60 / 55 / #4
-85 15 / 240 / 60 / 3 / 4 wire + ground 50 / 50 / #4
Installation Recommendations:
Minimum Clearance Between Machines - in (cm) 0 (0)
Minimum Clearance Behind Machines - in (cm) 18 (45.7)
Make-Up Air Required (per stack dryer) - sq ft (sq cm) 1 (929)
Exhaust Size - in (cm) 8 (20.3)
Max. Exhaust Back Pressure (Water Column) - in (mm) 0.3 (7.6)
Recommended Exhaust Length - ft (m) & 2 elbows 14 (4.3)
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Parts
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50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring

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Part # 8533-108-001 10/22 Part # 8533-108-001 10/22
Notes Notes
Parts
Data
50Hz
Parts
Maintenance
Electric Heated
Parts Data
Machine
Specs.
Installation
& Operation
Trouble-
shooting
Machine
Service
Electrical
Wiring