Dexter Laundry T-30 User manual

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INDUSTRIALDRYER OriginalInstructions
MODEL T-30, T-50, & T-80 ON-PREMISE For GB & IE
B-SERIES CONTROL, ELECTRIC-HEATED
OPERATOR’S MANUAL
The dryer will operate correctly in ambient temperatures of +5°C to +45°C, in relative humidity up to
50% at +40°C and above 50% when below +40°C, and at altitudes up to 1000m above sea level,
must be transported and stored from -40°C to +140°C, and has been packaged to prevent damage
from humidity, vibration, and shock. Take measures to avoid harmful effects of occasional
condensation.
Post the following “For Your Safety” cautions in a prominent location:
FOR YOUR SAFETY
Do not store or use petrol or other flammable vapours and liquids or dry cleaning solvents in the
vicinity of this or any other appliance.
FOR YOUR SAFETY
THIS MACHINE IS FOR DRYING ONLY FABRICS WASHED IN WATER.
To avoid possibility of fire, including spontaneous combustion, do not dry oiled floor mops, items
containing foam rubber or similarly textured rubberlike materials or any material on which you have
used a cleaning solvent or which contains flammable liquids or solids (such as petrol, kerosene, waxes,
etc.) Fabric softeners, or similar products, should be used per the fabric softener instructions. Remove
all objects from pockets such as lighters and matches.
WARNING – Risk of Fire
Clothes dryer installation must be performed by a qualified installer.
Install the clothes dryer according to the manufacturer’s instructions and local codes.
Do not install a clothes dryer with flexible plastic venting materials. If flexible metal (foil type) duct is
installed, use duct that has been investigated and found acceptable for use with clothes dryers.
Flexible venting materials are known to collapse, be easily crushed, and trap lint. These conditions will
obstruct clothes dryer airflow and increase the risk of fire.
To reduce the risk of severe injury or death, follow all installation instructions.
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand the
hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall
not be made by children without supervision. Children of less than 3 years should be kept away
unless continuously supervised.
It is important that you read this Manual and retain it for future reference. For service or
replacement parts, contact the distributor in your area or the manufacturer:
Dexter Laundry, Inc.
2211 West Grimes Avenue
Fairfield, Iowa 52556, USA

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TABLE OF CONTENTS
Page No.
Dryer Dimensions (Figure 1)............................................................................. 4, 5, 6
Uncrating ...................................................................................................... 7
Dryer Installation (Figure 2)..............................................................................8
Dryer Exhaust System (Figure 3).......................................................................12
Dryer Shutdown...............................................................................................12
Touch Pad Layout (Figure 4).............................................................................13
Dryer Default Settings...................................................................................... 14
Dryer Default Codes......................................................................................... 14
Touch Pad Description......................................................................................15
Operating Instructions......................................................................................17
Programming Instructions.................................................................................19
Servicing Dryer................................................................................................ 26
Preventive Maintenance....................................................................................27
WARNINGS ABOUT USE AND OPERATION
Caution! There are sharp ed
g
es 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.
Meaning: Do Not Enter This
Equipment (or Space).
Meaning: Do Not Step, Stand, or Sit
on This Equipment.
Meaning: Do Not Operate with
Guards or Covers Removed.
Meaning: High Voltage. Disconnect
power before servicing.
Meanin
g
: Lock Out and Ta
g
Out
before servicing.
Meaning: Burn Hazard. Do Not Touch
Heater Housing or Heating Elements.
Allow these parts to cool before servicing.
Meaning: Do Not Dry Items
Containing Explosive Material.
Meaning: Do Not Dry Items
Containing Flammable Material.
Meaning: Read Operators
Manual.
Meaning: Center of Gravity.
Meaning: Left Point for Forklift
or Hand Pallet Truck or Jack.
Meaning: Right Point for Forklift or
Hand Pallet Truck or Jack.
It is ABSOLUTELY ESSENTIAL that the dryer be connected to a known earth connection.
This is not only for personal safety, but is necessary for proper operation.
DO NOT MODIFY THIS APPLIANCE. KEEP SHIELDS, GUARDS AND COVERS IN
PLACE. These safety devices are provided to protect everyone from injury.
WARNING: Do not stop dryer before end of cycle time unless all items are quickly removed
and spread out to dissipate heat.

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WARNINGS ABOUT USE AND OPERATION continued
THIS DRYER IS EQUIPPED WITH A MANUALLY RESETTABLE OVER-TEMPERATURE
THERMOSTAT located to the right of the motor on the rear of the cabinet. Should the dryer
cease to heat, refer to your “Service Procedure and Parts Data” book for instructions.
CHECK THIS THERMOSTAT WHEN INSTALLING DRYER to assure it is not tripped.
Impacts, such as rough handling in shipment, may trip the thermostat.
DO NOT SPRAY AEROSOLS IN THE VICINITY OF THIS APPLIANCE while in operation.
THIS APPLIANCE SHALL NOT BE USED TO DRY OFF CLOTHES CONTAINING
SOLVENTS OR DRY-CLEANING FLUIDS.
Misuse of Dryer
Do not use this Equipment for any purpose not described in this Manual.
Do not operate this equipment without all guards and covers in place.
Do not operate this dryer from any power source not matching the
operational requirements on the back of the dryer.
Do not place your body inside the dryer cylinder or allow others to do so.
Death or serious injury can result from this!
Other Examples May Be Applicable
Caution – Replace Fuses With Same Type and Rating
Fuse No. Voltage Amperage SC I/R Type Size
F1 250V 600mA 35A@250VAC T 5.00 x 20.00 mm

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DRYER DIMENSIONS - FIGURE 1A

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DRYER DIMENSIONS - FIGURE 1B

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DRYER DIMENSIONS - FIGURE 1C

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INSTALLATION AND OPERATING INSTRUCTIONS
Note: A forklift, or a hand pallet truck or jack, must lift the dryer and only from the
front or rear of the dryer with the dryer bolted to the pallet and supported the full
length of the dryer.
UNCRATING AND PLACING THE DRYER
Tools Required: 3/4" (19 mm) hex socket and ratchet driver, a knife, and a channel-lock
wrench, which will open to 1 3/8" (35 mm).
1. Remove the plastic wrap with the knife. Remove cardboard rails, fillers, and top cap.
2. Using a ratchet and a 3/4” (19 mm) socket, remove the (4) bolts attaching the wooden
skid to the dryer cabinet. Save the bolts for future moving of the dryer.
3. With a walking motion, move the dryer forward completely off the wooden skid. Save the
skid for future moving of the dryer.
4. Using the channel-lock wrench, adjust the leveling legs to align the machine with adjacent
units.
Note: If the dryer is ever moved again, the dryer should be re-mounted on its pallet and its
crating bolts re-inserted and tightened, in the reverse order as above.
Dryer Model Mass Dryer Model Mass Dryer Model Mass
DN0030E_ 210 kg DN0050E_ 263 kg DN0080E_ 331 kg
DRYER INSTALLATION
1. CODE CONFORMITY: All industrial dryer installations must conform to the local and
national codes for the location of installation.
The appliance must not be installed behind a lockable door, a sliding door or a door with a
hinge on the opposite side to that of the tumble dryer, in such a way that a full opening of the
tumble dryer door is restricted.
2. INSTALLATION CLEARANCES: This unit may be installed at the following alcove
clearance.
I. Left Side 0”
II. Right Side 0” *
III. Back 18” (457 mm) (Certified for 1” (25 mm) clearance; however, 18”
(457 mm) clearance is necessary behind the belt guard to allow servicing
and maintenance.)
IV. Front 48” (1220 mm) (to allow use of dryer)
V. Top Refer to figure labeled on the next page “Vertical Clearance Dimensions”.
Certification allows 0” clearance at the top 1” (25 mm) back from the
front. However, a 1/4" (6 mm) clearance is required to allow opening the
upper service door.

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A 10” (254 mm) clearance is required from the top at all other points.
VI. Floor This unit may be installed upon a combustible floor.
Do not obstruct the flow of combustion and ventilation air.
Maintain minimum of 25 mm (1 in.) clearance between duct and combustible material.
Refer to installation label attached to rear guard for other installation information.
VERTICAL CLEARANCE DIMENSIONS - ALL DCBD(30/50/80)
3. MAKE-UP AIR. Adequate make-up air must be supplied to replace air exhausted by
dryers on all types of installations. Provide a minimum air opening to the outside for each
dryer as follows:
Dryer Model Make-up Air Volume/Time Make-up Air Opening Size (minimum)
DN0030E_ 690 CFM (19.5 m3/minute) 1 ft² (0.10 m2)
DN0050E_ 700 CFM (19.8 m3/minute) 1.25 ft² (0.12 m2)
DN0080E_ 850 CFM (24.1 m3/minute) 1.25 ft² (0.12 m2)
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 sufficiently away from the dryers to allow an
even airflow to the air intakes of all dryers. Multiple openings should be provided.
The operation of this appliance may affect the operation of gas appliances, which take their
air for safe combustion from the same room. Adequate ventilation must be provided to avoid
back flow of gasses from other appliances in the same room. All gas appliances should be
tested with the Dexter dryer in operation and all the windows and doors closed. If in doubt,
consult the appliance manufacturer(s).

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4. ELECTRICAL REQUIREMENTS:
The electrical installation must be performed by a qualified electrical technician.
The electrical power requirements necessary to operate the unit satisfactorily are listed on
the serial plate located on the back panel of each dryer. The electrical connection should be
made at the terminal blocks in the control box on the rear of the unit using conductors rated
at 75 C (167 F) and a wire size adequate to handle the amperage and voltage listed on the
serial plate (see table below for recommended minimum sizes). It is absolutely necessary that
the dryer be connected to a known earth (No. 8 AWG copper conductor recommended).
Knockouts are provided for the connection of 1-inch (25 mm) conduit for the power supply
conductors and 3/8-inch (10 mm) conduit for the external earthing conductor. It is absolutely
necessary that the dryer be connected to a good earth connection. The earth connection
resistance should be checked prior to operation. Introduction of supply wiring must not
increase the Ingress Protection (IP) rating.
HEATING ELEMENT
SIZE (kW)
SUPPLY VOLTAGE
(PHASE / V.)
MINIMUM DUAL ELEMENT
TIME DELAY FUSE SIZE AT
FUSED DISCONNECT (A.)
MINIMUM WIRE SIZE FROM FUSED
DISCONNECT TO DRYER TERMINAL
BLOCK (75OC COPPER WIRE)
22 3
/
400 50 # 6
(
13.3 mm^2
)
24 3 / 415 50 # 6 (13.3 mm^2)
30 3 / 400 60 # 4 (21.1 mm^2)
36 3 / 400 80 # 3 (26.7 mm^2)
The installation must meet the electrical requirements of the country, state, or locality of
installation. The installer must provide a disconnect switch, which will interrupt all lines. It
may be a local or national requirement to provide an electrical interruption switch visible and
accessible from the room in which the dryer is installed. The wiring diagram is located in the
belt guard on the back of the dryer.
For destination countries where CE requirements must be met, individual 400V supply
disconnecting devices for each dryer are required and must be one of the following types:
a. switch-disconnector with fuses per IEC 60947-3 utilization category AC-23B;
b. disconnector with fuses per IEC 60947-3 having an auxiliary contact that in all cases causes
switching devices to break the load circuit before the opening of the main contacts of the
disconnector;
c. a circuit-breaker suitable for isolation per IEC 60947-2;
d. any other switching device in accordance with an IEC product standard for that device and
which meets the isolation requirements of IEC 60947-1 as well as a utilization category defined
in the product standard as appropriate for on-load switching of motors or other inductive loads;
The supply disconnecting devices must
a. provide a means allowing the supply disconnecting devices to be locked in the OFF position;
b. be mounted 0.7 m to 1.7 m above the floor, within 2 m from the dryer, and within 8 m from
the operator position;
c. have a red actuator to indicate that it serves a dual Emergency Stop function;
d. be rated for branch circuit operation;
e. be approved for use in the country where installed;

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CONTROL TRANSFORMER CONNECTIONS Adjustment for different voltages of supply mains.
IMPORTANT: TRANSIENT VOLTAGE SURGE SUPPRESSORS
Like most electrical equipment your new machine can be damaged or have its life shortened
by voltage surges due to lightning strikes which are not covered by factory warranty. Local
power distribution problems also can be detrimental to the life of electrical components. We
recommend the installation of transient voltage surge suppressors for your new equipment.
These devices may be placed at the power supply panel for the complete installation and don’t
require an individual device for each machine.
These surge protectors help to protect equipment from large spikes and also from small
ongoing spikes in the power that occur on a day to day basis. These smaller surges can
shorten overall life of electrical components of all types and cause their failure at a later date.
Although they can’t protect against all events, these protective devices have a good reputation
for significantly lengthening the useful life of electronic components. Electronic components
are helped to have a longer useful life when they are supplied with the clean stable electrical
power they like.
6. EXHAUST INSTALLATION. (Refer to Figure 3 at the end of section 6.) Exhausting of the
dryer(s) should be planned and constructed so that no air restrictions occur. Any restriction
due to pipe size or type of installation can cause slow drying time, excessive heat, and lint in
the room.
From an operational standpoint, incorrect or inadequate exhausting can cause a cycling of
the high limit thermostat, which shuts off the heating elements and results in inefficient
drying.
Individual exhausting of the dryers is required. All heat, moisture, and lint should be exhaust
outside by attaching a pipe of the proper diameter to the dryer adapter collar and extending it
out through an outside wall. This pipe must be very smooth on the inside, as rough surfaces
tend to collect lint, which will eventually clog the duct and prevent the dryer from exhausting
properly. 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