Dexter Laundry DTCH 80 V Manual

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80 LB.OPL MICRO REVERSING DRYER
DTCH 80 V
The Dexter Compan
Fairfield Iowa 52556
641-472-5131 Part number # 8533-051-001
FAX: [phone]
Service Procedures and Parts Data

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WARNING
FOR YOUR SAFETY, THE INFORMATION IN THIS MANUAL MUST BE FOLLOWED TO
MINIMIZE THE RISK OF FIRE OR EXPLOSION OR TO PREVENT PROPERTY
DAMEGE, PERSONAL INJURY OR LOSS OF LIFE.
IF YOU SMELL GAS:
Do Not try to light any appliace.
Do Not touch or operate any electrical switch.
Do Not use any phone in your building.
Do clear the room, building or area of all occupants.
Do immediately call your gas supplier from a neighbors phone. Follow the gas
suppliers instructions.
Do call the fire department if your gas supplier is not available.
Disconnect power before servicing
WARRANTY REGISTRATION ACTIVATED WHEN
REGISTRATION RECEIVED AT FACTORY.
SEND WARRANTY REGISTRATION AT STARTUP!!!!!!
s rial numb r on r ar of dry r
WARNING
DRY ONLY FABRICS WASHED IN WATER
TO AVOID T E RISK OF FIRE, INCLUDING SPONTANEOUS COMBUSTIONS,
DO NOT DRY:
- ITEMS CONTAINING FOAM RUBBER. OR ANY SIMILARLY TEXTURED
RUBBER-LIKE MATERIALS.
- ANY ITEMS ON W IC YOU AVE USED A CLEANING SOLVENT OR
W IC CONTAIN FLAMMABLE LIQUIDS OR SOLIDS, SUC AS NAPT A,
GASOLINE, OR OT ER OILS OR WAXES.

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Table of Contents
SECTION 1
Specifications .................................................................................................... page 4 - 5
SECTION 2
Installation & Operation ...................................................................................... page 7-25
Micro Fault Codes ............................................................................................. page 26-27
SECTION 3
Wiring Schematics ............................................................................................. page 28-29
SECTION 4
Service Procedures ........................................................................................... page 30-35
SECTION 5
Trouble Shooting ................................................................................................ page 36-38
SECTION 6
Parts Data ......................................................................................................... page 39-53
SECTION 7
Maintenance ...................................................................................................... page 54

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Section 1
Specifications
Model DTCH80V Reversing
Micro-controlled Industrial Dr er
Capacit Maximum 80 pounds dr weight (36kg)
C linder dimensions 36 1/2" (92.71cm) diameter
38" (96.52cm) depth
Cabinet dimensions 38.44" W x 51.13" D x 75.5" H (w/legs)
(97.63cm X 129.86cm X 191.77cm w/legs)
Motors Drive motor - 1/2 HP (.373 Kw)
Blower motor - 1/2 HP (.373 Kw)
Construction Standard trunnion st le c linder support
Air flow 1200 cfm total air flow (33.98M3/min)
Full perforated tumbler for cross flow air circulation
BTU rating 215,000 BTU input (54,180 kcal)
Natural gas standard, LP kits available separatel from P&S
Ignition Direct spark electronic ignition
Exhaust One 8" connection (20.32cm)
.3 StaticPressure Max. at rear of dr er
Gas line connection 1/2" N.P.T. (1.27cm)
Electrical 208-240 Volts, 60 HZ AC, 3 Ph.
15 amp circuit breaker or equivalent.
Micro control 5 Programmable formulas
Temperature Control Sensor
Weight (shipping lbs. / net lbs. ) 693/613 (312.16 kg / 276.12 kg)
Service 3 wire + ground
Colors White & Stainless Steel

12.055"
(30.50cm)
Electrical Connection
64.63"(164.15cm) (25.71cm)
12.00" ( 30.48cm)
5.06" (12.86cm)
8.00" (20.32 cm)
10 1/8"
Back
Gas Connection
14.00"(35.56cm)
75.13"(190.82cm)
31.1"(79.06cm)
1.375"(3.49cm)Max.
3/8"(.952cm) min.
38.44"(97.63cm)
Front
51.13"(129.86cm)
Side
42.38"(107.63cm)
30.90"
12.09"
(30.48cm)
(29.26cm)
11.52"
(78.48cm
)
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Section 2
Installation & Operation
Uncrating
1. Remove cardboard and innerpack.
Installation
1. All commercial dr er installations must conform with local applicable local codes or in the
absence of local codes, with the National Fuel Gas Code ANSI Z223.1A-1988. Canadian
installations must compl with current standard CAN/CGA-B149(.1 or .2) Installation Code for
Gas Burning Appliances or
Equipment, and local codes if applicable. The appliance, when installed, must be electri-
call groundedin accordance with the National Electric Code, ANSI/NFPA No. 70-1990, or
when installed in Canada, with Standard CSA C22.1 Canadian Electrical Code Part 1.
2. Installation clearances: This unit ma be installed at the following alcove clearances.
1. Left side 0"*
2. Right side 0"* *Units ma be installed in direct contact with an adjacent dr er,
providing allowance is made for opening upper & lower service doors.
3. Back 18" (certified for 1" clearance; however 18" behind the guard is
recommended to clean, service, & maintain the dr er)
4. Front 48" to allow use of dr er.
5. Top Certification allows 0" clearance at the top from the front back 1".
However, a 1/4" clearance (A) is required to allow opening the upper
service door. A 4" clearance (C) is required at the top, at a depth of 1" to
4" (D) from the front. A 10" clearance (E) is required from the top at all
other points.
6. Floor This unit ma be installed upon a combustible floor.

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Make-up Air. Adequate make-up air must be supplied to replace air exhausted b dr ers
on all t pes of installations. Provide a minimum of 1 1/2 square foot of make-up air opening to
the outside for each dr er. This is a net requirement of effective area. Screens, grills or
louvers which will restrict the flow of air must be considered. Consult the supplier to determine
the free area equivalent for the grill being used.
The source of make-up air should be located sufficientl awa from the dr ers to allow an even
air flow to the air intakes of all dr ers. Multiple openings should be provided.
NOTE: The following considerations must be observed for gas dr er installations where dr
cleaners are installed. The sources of all make-up air and room ventilation air movement to all
dr ers must be located awa from an dr cleaners. This is necessar so that solvent vapors
will not be drawn into the dr er inlet ducts. Dr cleaner solvent vapors will decompose in
contact with an open flame such as the gas flame present in clothes dr ers. The decomposi-
tion products are highl corrosive and will cause damage to the dr er ducts and clothes loads.
NOTE: THE DRYER MUST BE GROUNDED BY A SEPARATE GROUND CONDUCTOR
FROM THE GROUND SCREW ON THE DRYER TO THE NEUTRAL BAR IN THE
SUPPLY BREAKER BOX
Gas requirements
The complete gas requirements necessar to operate the dr er satisfactoril are listed on the
serial plate located on the back panel of the dr er. The inlet gas connection to the unit is ˚
inch pipe thread. However, the size of the piping to suppl the dr er should be determined b
reference to the Fuel Gas Code and consulting the local gas supplier.
A joint compound resistant to the action of liquefied petroleum gases should be emplo ed in
making pipe connections. A 1/8 inch NPT plugged tapping, accessible for test gage connec-
tion, must be installed immediatel upstream of the gas suppl connection to the dr er. A drip
tee should be provided in the gas piping suppl ing the unit to catch dirt and other foreign
articles. All pipe connections should be checked for leakage with soap solution or leak
detector. Never check with an open flame.
Pressure Testing
The dr er and its individual shutoff valve must be disconnected from the gas suppl piping
s stem during an pressure testing of that s stem at test pressures in excess of ˚ psig. The
dr er must be isolated from the gas suppl piping s stem b closing its individual manual
shutoff valve during an pressure testing of the gas suppl piping s stem at test pressures
equal to or less than 1/2 psig. Max. 1/2 psig on suppl side of manual gas valve.
Exhaust Installation
An 8" diameter exhaust connection is required. Exhausting of the dr er should alwa s be
planned and constructed so that minimum air restrictions occur. An restriction due to pipe
size or t pe of installation can cause slow dr ing time, excessive heat, and lint build up in the
s stem and the room.

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NOTE: From an operational standpoint, incorrect or inadequate exhausting can cause
c cling of the high limit thermostat which shuts off the main burners and results in inefficient
dr ing.
NOTE: Individual exhausting of the dr er is recommended. All heat, moisture, and lint should
be exhausted outside b attaching a pipe of the proper diameter to the dr er adapter collars
and extending it out through an outside wall. This pipe must be ver smooth on the inside, as
rough surfaces tend to collect lint which will eventuall clog the ducts and prevent the dr er from
exhausting properl . All elbows must be smooth on the inside. All joints must be made so the
exhaust end of one pipe is inside the next one downstream. The addition of an exhaust pipe
tends to reduce the amount of air the blower can exhaust. This does not affect the dr er
operation if held within practical limits. For the most efficient operation, it is recommended
that no more than 20 feet of straight 8" diameter pipe with two right angle elbows be used for
each c linder. When more than two elbows are used, two feet of straight pipe should be
removed for each additional elbow. No more than four right angle elbows should be used to
exhaust each c linder. Max 3 Static Pressure at rear of dryer.
NOTE: If the exhaust pipe passes through a wall, a metal sleeve of slightl larger diameter
should be set in the wall and the exhaust pipe passed through this sleeve. This practice is
required b some local codes and is recommended in all cases to protect the wall. This t pe
of installation should have a means provided to prevent rain and high winds from entering the
exhaust when the dr er is not in use. A hood with a hinged damper can be used for this
purpose. Another method would be to point the outlet end of the pipe downward to prevent
entrance of wind and rain. In either case, the outlet should be kept clear, b at least 24", of an
objects which would cause air restrictions.
NOTE: Never install a protective screen over the exhaust outlet.
NOTE: When exhausting a dr er straight up through a roof, the overall length of the duct has
the same limits as exhausting through a wall. A rain cap must be placed on top of the exhaust
and must be of such a t pe as to be free from clogging. The t pe using a cone shaped “roof”
over the pipe is suitable for this application.
NOTE: Exhausting the dr er into a chimne or under a building is not permitted. In either
case, there is a danger of lint build-up which can be highl combustible.
NOTE: Installation of several dr ers where a main discharge duct is necessar , will need the
following considerations for installation. Indivdual 8" ducts from the dr ers into the main
discharge duct should be at a 45 degree angle in the direction of discharge air flow.

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NOTE: A small diameter duct will restrict air flow, a large diameter duct will reduce air
velocit , both contributing to lint build up. An inspection door should be provided for periodic
clean-out of the main duct.
DRYER SHUTDOWN
To render the dr er inoperative turn off the main gas shut-off valve and disconnect power to the
dr er.
DIAMETER TO INCREASE AS SHOWN
NOTE: Never install the 8" ducts at a right angle into the main discharge duct. The following
illustration shows the various round main duct diameters to use with the individual dr er ducts.
The main duct can be rectangular or round, provided adequate air flow is maintained. For
each dr er, the total exhausting (main discharge duct plus duct outlet from the dr er) should not
exceed the equivalent of 20 feet and two elbows. The diameter of the main discharge duct at
the last dr er must be maintained to exhaust end.

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Controls Transformer
This transformer is mounted in the control box on the back of the dr er and steps a range of
208 to 240 volts down to 24 volts for the controls. There are three terminals on the controls
transformer for the incoming power. The 208 VAC terminal is for 208 to 220 volts and the 240
VAC terminal is for 221 to 240 volts. The control voltage on secondar side is 24 volts.
Electrical requirements
The electrical power requirements necessar to operate the unit satisfactoril are listed on the
serial plate located on the back panel of each dr er. The electrical connection should be made
to the terminal in the control box on the rear of the unit, using a wire size adequate to handle
the amperage and voltage listed on the serial plate, but never smaller than No 12 AWG
wire. The ground lug must be connected to a good external ground.The schematic and
wiring diagram are located on the belt guard on the back of the machine.
FUSE REQUIREMENTS : 15 amp circuit breaker 3 phase recommended
NOTE: THE DRYER MUST BE GROUNDED BY A SEPARATE GROUND CONDUCTOR
FROM THE GROUND SCREW ON THE DRYER TO THE NEUTRAL BAR IN THE
SUPPLY BREAKER BOX

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OPERATING INSTRUCTIONS
To dr a load of items, ou must choose one of the five-programmed dr c cles. Each of
these five dr c cles ma be modified in two different wa s to match our load. Please refer to
the “Permanent Programming” or “Temporar Programming” section of these instructions.
There are two parts to each dr c cle. The first part is the heating time, which is when the
gas valve is c cled on and off according to the temperature setting in the dr c cle program.
The second part is the cool down time, which is after the heating part of the dr c cle, and is
when the c linder continues to turn, but no heat is applied.
There will alwa s be at least two minutes of cool down time for each dr c cle. The
maximum amount of cool down time is 15 minutes.
During a reversing dr c cle, the tumbler will rotate in one direction for two minutes,
decelerate for four seconds, and then rotate in the opposite direction for two minutes. This
motion will repeat for the duration of the dr c cle.
In the following instruction steps, things that are displa ed on the 4-digit numerical displa
will be in “quotation marks” and an ke s on the dr er controller touch pad that ph sicall need
to be pressed will be in CAPITAL AND BOLD LETTERS.
1) Place our load into the dr er c linder and close the dr er loading door. Notice that the
dr er controller 4-digit numerical displa should show the word “LOAd”. If it does not show
this word, then press and release the STOP touch pad ke on the dr er controller twice.
2) Press and release the UP or DOWN arrow touch pad ke on the dr er controller to select a
dr c cle.
3) Once the desired dr c cle is selected, press and release the START touch pad ke .
After the dr er controller START touch pad ke is pressed, the dr er c linder will start
rotating and the two-digit total dr c cle time, along with a decimal point, will appear on the
dr er controller displa .
The time shown on the dr er controller displa will count down to the programmed cool
down time. At that time, the displa will change from the decimal point and two-digit
number to a letter “C” and two digits.
The letter “C” represents the cool down portion of the dr c cle. The two digits represent
the amount of time remaining in the dr c cle. The two-digit time, shown on the dr er
controller displa , will count down to zero.
When the time returns to zero, the dr er controller displa will flash the word “donE” and the
end of c cle tone will sound.

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At that point, the wrinkle free c cle will automaticall begin. This c cle will wait two minutes,
if the door is not opened or the STOP touch pad ke on the dr er controller is not pressed,
and then rotate the c linder for 10 seconds and stop. This two minutes of idle time and 10
seconds of tumble time will repeat a total of 10 times, at which time the wrinkle free c cle
stops. The c linder will not rotate again until a new dr c cle is started.
During the wrinkle free c cle the gas valve will not be operated and there will be no heat
applied to the load. The word “donE” will also continue to flash and do so even after the
wrinkle free c cle is finished. When the dr er loading door is opened, or the STOP touch
pad ke is pressed, the word “donE” will change to the word “LOAd” on the dr er controller
displa . The dr er will then be read for another dr c cle.
During the dr c cle, either pressing the STOP touch pad ke on the dr er controller or
opening the dr er loading door, will stop the dr c cle and not clear it. If ou press the
STOP touch pad ke on the controller and then open the dr er loading door the dr c cle
will not be cleared. However, if ou open (or open and close) the dr er loading door and
then press the STOP touch pad ke on the dr er controller, the present dr c cle will be
cleared and the word “LOAd” will appear on the dr er controller displa .

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TEMPORARY PROGRAMMING
The temporary programming mode will allow the change of the stored dry cycle
settings in the dryer controller for one complete dry cycle After the dry cycle is
complete, the default settings that existed before the temporary change are restored
The temporary dry cycle can be stopped and cleared at any time during the dry cycle
operation
To temporaril change a dr er controller c cle, follow the procedures below. Things that are
displa ed on the 4-digit numeric displa will be in “quotation marks”. Ke s on the dr er
controller touch pad that ph sicall need to be pressed will be in CAPITAL AND BOLD
LETTERS.
If, at an time, ou want to escape the temporar programming mode while changing the
program settings, ou can press the STOP ke on the dr er controller touch pad if the 4-digit
numeric displa is not flashing. The SELECT/ENTER ke on the dr er controller touch pad
can be pressed and released to enter the flashing value shown on the 4-digit numeric displa
and allow ou to escape.
If ou press and release the STOP ke on the dr er controller touch pad, when the 4-digit
numeric displa is not flashing, the temporar changes to the dr c cle program will be
cancelled. The stored dr c cle settings that existed before the temporar change will then be
restored.
If, at an time, ou want to start the temporar dr c cle during the temporar programming
mode, press and release the START ke on the dr er controller touch pad if the 4-digit
numeric displa is not flashing. The SELECT/ENTER ke on the dr er controller touch pad
can be pressed and released to enter the flashing value shown on the 4-digit numeric displa
and allow ou to start the temporar dr c cle. If ou start the temporar dr c cle, the 4-digit
numerical displa will change to the total dr time and count down to 0 as the dr c cle
progresses.
PROCEDURE
1) Make sure the dr er is not in a dr c cle. The 4-digit numeric displa on the dr er
controller will show “LOAd” when the dr er is not in a dr c cle.
2) Press and release the UP or DOWN arrow ke s on the dr er controller touch pad to
chose the dr c cle that ou want to change (dr c cle 1 through 5). The dr c cle L.E.D.
will illuminate to indicate which dr c cle ou are choosing. If ou press either arrow ke
and hold it down, the controller will sequence through the five dry cycles.

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3) Press and release the CYCLE ke on the dr er controller touch pad once ou have
chosen the dr c cle ou want to change. After ou press this ke , the programming L.E.D.
and the dr time L.E.D. will illuminate. The dr c cle L.E.D. will remain illuminated. The
total dr time will also be displa ed on the 4-digit numeric displa .
4) Press and release the UP or DOWN arrow ke s to change the total dr time. Once
either of the arrow ke s is pressed, the dr time L.E.D. and the total dr time on the 4-digit
numeric displa will flash. If ou press and hold either arrow ke down, ou will increment
(UP arrow) or decrement (DOWN arrow) through the total dr times available (1 through 60
minutes). This displa ed dr time includes the cool down time along with the heated time.
To not change the total dr time, do not press the arrow ke s. Go to the next step.
5) Press and release the SELECT/ENTER ke . Once this ke is pressed and released,
the dr time L.E.D. will switch off, the dr c cle L.E.D. and programming L.E.D. will remain
on, and the temperature L.E.D. will illuminate. The dr ing temperature will also be shown
on the 4-digit numeric displa .
6) Press and release the UP or DOWN arrow ke s to change the dr ing temperature.
Each press and release of the arrow ke s will either increase or decrease the temperature
b five degrees Fahrenheit or three degrees Celsius, depending on how our dr er
controller is set up. Once either of the arrow ke s is pressed, the temperature L.E.D. and
the dr ing temperature on the 4-digit numeric displa will flash. If ou press and hold either
arrow ke down, ou will increment (UP arrow) or decrement (DOWN arrow) our wa
through the available dr ing temperatures (105O Fahrenheit or 41O Celsius, up to 195O
Fahrenheit or 90O Celsius). If ou do not want to change the dr ing temperature, do not
press the arrow ke s. Go to the next step.
7) Press and release the SELECT/ENTER ke . Once this ke is pressed and released,
the temperature L.E.D. will switch off, the dr c cle L.E.D. and programming L.E.D. will
remain on, and the cool down L.E.D. will illuminate. The cool down time will also be shown
on the 4-digit numeric displa .
8) Press and release the UP or DOWN arrow ke s to change the cool down time. Once
either of the arrow ke s is pressed, the cool down L.E.D. and the cool down time on the 4-
digit numeric displa will flash. If ou press and hold either arrow ke down, ou will
increment (UP arrow) or decrement (DOWN arrow) through the cool down times available
(2 through 15 minutes). To not change the cool down time, do not press the arrow ke s.
Go to the next step.
9) Press and release the SELECT/ENTER ke . Once this ke is pressed and released,
the cool down L.E.D. will switch off, the dr c cle L.E.D. and programming L.E.D. will
remain on, and the reversing L.E.D. will illuminate. Either “rEv” (reversing mode) or “nrEv”
(non-reversing mode) will also be shown on the 4-digit numeric displa .

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10)Press and release the UP or DOWN arrow ke s to switch between reversing and non-
reversing operation. Once either of the arrow ke s is pressed, the reversing L.E.D. and the
“rEv” (reversing mode) or the “nrEv” (non-reversing mode) shown on the 4-digit numeric
displa will flash. To not change the reversing or non-reversing mode of operation, do not
press the arrow ke s. Go to the next step.
11) Press and release the SELECT/ENTER ke . Once this ke is pressed and released,
the programming L.E.D. will switch off. The reversing L.E.D. and the dr c cle L.E.D. will
remain on. The flashing reversing (rEv) or the non-reversing (nrEv) on the 4-digit numeric
displa will stop flashing and remain.
12)At this point, ou have two choices. 1) You can perform the modified dr c cle b
pressing and releasing the START ke on the dr er controller touch pad, or 2) You can
clear the modified dr c cle program b pressing and releasing the STOP ke once. If ou
start the modified c cle, the total dr time will appear on the 4-digit numeric displa and it
will count down to 0 as the dr c cle progresses. If ou choose to clear the modified dr
c cle, the 4-digit numeric displa will change to “LOAd”.

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TEMPORARY PROGRAMMING EXAMPLE
REQUIREMENTS:Dr a load, in reverse mode, with 40 minutes of actual heat at
185 0F and two minutes of cool down.
The following procedure will show ou how to temporaril modif the existing dr c cle 5
program for one c cle of dr ing. It is based on the assumption that the factor defaults have
not been permanentl changed. If the have been changed, the steps of this procedure will be
the same, but the values that are displa ed will be different. The amount of times that the dr er
controller touch pad UP or DOWN ke s must be pressed and released ma also be different.
If ou want the change to be permanent, go to the “PERMANENT PROGRAMMING” section
of this manual.
PROCEDURE:
1) After the load has been placed in the dr er, press and release the UP or DOWN
touch pad ke on the dr er controller until the L.E.D. for dr c cle 5 is illuminated.
2) Press and release the CYCLE ke on the dr er controller touch pad. You will see
the number “25” on the dr er controller displa . The programming L.E.D. and dr
time L.E.D. will be illuminated.
3) Press and release the UP arrow ke on the dr er controller touch pad 17 times so
the displa will show a flashing “42”. When the UP arrow touch pad ke is pressed
the first time, the number “26” will be flashing on the dr er controller displa . Each
number after that will also flash.
4) Now, press and release the SELECT/ENTER touch pad ke on the dr er controller.
The number “45” will stop flashing and the dr time L.E.D. will switch off. The dr er
controller displa will now show “175”, the temperature L.E.D. will illuminate, and the
programming L.E.D. and dr c cle 5 L.E.D. will remain on.
5) Press and release the UP arrow ke on the dr er controller touch pad two times so
the controller displa will show a flashing “185”. Each press of the UP arrow ke will
increment the temperature b five degrees.

20
6) Now, press and release the SELECT/ENTER touch pad ke on the dr er controller.
The number “185” will stop flashing and the temperature L.E.D. will switch off. The
dr er control displa will now show a number “2”, the cool down L.E.D. will illuminate,
and the programming L.E.D. and dr c cle 5 L.E.D. will remain on.
7) Press and release the SELECT/ENTER ke on the dr er controller touch pad,
since the desired cool down time is two minutes. After ou press the SELECT/
ENTER touch pad ke on the controller, the cool down L.E.D. will switch off. The
dr er controller displa will show “nrEv”, the reversing L.E.D. will illuminate, and the
programming L.E.D. and dr c cle 5 L.E.D. remain on.r controller touch pad, since
the desired cool down time is two minutes. After ou press
8) Press and release the UP or DOWN arrow ke once. A flashing “rEv” will appear on
the dr er controller displa and the reversing L.E.D. will start to flash. Each press
and release of either arrow ke will toggle between the reversing mode (“rEv”) and
non-reversing mode (“nrEv”).
9) Press and release the SELECT/ENTER ke . Once this ke is pressed and
released, the programming L.E.D. and the reversing L.E.D. will switch off. The dr
c cle 5 L.E.D. will remain on. The flashing “rEv” will stop flashing and remain on.
You are now read to start the new dr c cle. This new dr c cle will be in effect for
one dr c cle onl . After the dr c cle is done, or if the STOP touch pad ke on the
dr er controller is pressed and released twice, consecutivel , the c cle 5 program
will revert to the factor default settings.
If ou press the START touch pad ke on the dr er controller, the controller displa
will change from “rEv” to the number “42” and dr c cle 5 will b