Dexter Laundry DTCH 80 V Handbuch
1
80 LB.OPL MICRO REVERSING DRYER
DTCH 80 V
The Dexter Compan
Fairfield Iowa 52556
641-472-5131 Part number # 8533-051-001
FAX: 641-472-6336 3/05
Service Procedures and Parts Data
2
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.
3
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
4
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
)
5
6
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.
7
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.
8
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.
9
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.
10
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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