MAXIDRY MAXI30 User manual

MAXI30 Installation Manual
Phase 7 / Dual Timer / S.A.F.E. System
WARNING:Foryoursafetytheinformation
in this manual must be followed to
minimize the risk of fire or explosion and
to prevent property damage, personal
injuryordeath.
— Do not store or use gasoline or other
flammable vapors and liquids in the
vicinityof thisor anyother appliance.
— WHATTO DOIFYOU SMELLGAS:
●Donot tryto lightany appliance.
●Donot touchanyelectrical switch;
donot useanyphone inyour
building.
●Cleartheroom, building or areaof
alloccupants.
●Immediatelycallyourgassupplier
froma neighbor’sphone. Follow
thegas supplier’sinstructions.
●Ifyoucannotreachyourgas
supplier, callthe firedepartment.
— Installation and service must be
performedbyaqualifiedinstaller,service
agencyor thegas supplier.
AVERTISSEMENT:Assurez-vousdebien
suivrelesinstructionsdonnéesdanscette
noticepour réduireau minimumle risque
d’incendie ou d’explosion ou pour éviter
toutdommagematériel,touteblessureou
lamort.
—Ne pas entreposer ni utiliser d’essence
nid’autres vapeursou liquides
inflammablesà proximité decet
appareilou de toutautre appareil.
—QUEFAIRESIVOUS SENTEZUNE
ODEURDEGAZ:
●Nepas tenter d’allumerd’appareils.
●Netouchezà aucuninterrupteur. Ne
pasvous servirdestéléphones se
trouvantdansle bâtiment.
●Évacuezla pièce,lebâtiment oula
zone.
●Appelezimmédiatement votre
fournisseurde gazdepuis unvoisin.
Suivezlesinstructions dufournisseur.
●Sivous nepouvez rejoindrele
fournisseurde gaz,appelez leservice
desincendies.
—L’installation et l’entretien doivent être
assurés par un installateur ou un
service d’entretien qualifié ou par le
fournisseurdegaz.
Maxidry
Part No. 113260-4

2113260-4
“IMPORTANT NOTE TO PURCHASER”
Information must be obtained from your local gas supplier on the
instructions to be followed if the user smells gas. These
instructionsmust beposted ina prominentlocation nearthe dryer.
FOR YOUR SAFETY
Do not store or use gasoline
orother flammablevapors
andliquids inthe vicinityof
thisor anyother appliance.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser d’essence
nid’autres vapeursou liquides
inflammablesà proximité decet
appareilou de toutautre appareil.
Wehavetriedtomakethismanualas complete as possibleandhopeyou will find ituseful. Themanufacturer
reserves the right to make changes from time to time, without notice or obligation, in prices, specifications,
colors, and material, and to change or discontinue models. The illustrations included in this manual may
not depict your particular dryer exactly.
IMPORTANT
For your convenience, log the following information:
DATEOFPURCHASE ______________________________________________________MODELNO. _________________
RESELLER’SNAME ___________________________________________________________________________________
SERIALNUMBER(S) ___________________________________________________________________________________
____________________________________________________________________________________________________
____________________________________________________________________________________________________
Retain This Manual in a Safe Place for Future Reference
This product embodies advanced concepts in engineering, design, and safety. If this product is properly
maintained, it will provide many years of safe, efficient, and trouble free operation.
Only qualified technicians should service this equipment.
OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation
manual included with the dryer.
The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.
MAXI30
These instructions are only valid if the following country code is on the appliance… If this code is not
presentonthe appliance, it is necessary to refer to the technical instructions which will providethenecessary
information concerning the modification of the appliance to the condition of use for the country.
In accordance with EN ISO 3166-1, the names of countries shall be represented by the following codes:
GB United Kingdom
IE Ireland

113260-4 3
List of Acronyms _____________________
D.M.S. Drill Measurement Size
HVAC Heating, Ventilating, and Air-Conditioning
inWC Inches of Water Column
L.C.D. Liquid Crystal Display
L.E.D. LightEmitting Diode
L.P. Liquid Propane
OSHA Occupational Safety
and Health Administration
S.A.F.E. Sensor Activated Fire Extinguishing
UL Underwriters Laboratory
Table of Contents ______________
IMPORTANT
You must disconnect and lockout the electric supply and the
gas supply or the steam supply before any covers or guards
are removed from the machine to allow access for cleaning,
adjusting, installation, or testing of any equipment per OSHA
standards.
Please observe all safety precautions displayed on the
equipmentand/or specifiedinthe installation manualincluded
with the dryer.
Beforeinstallation, check thatthelocal distribution conditions,
natureof gas and pressure, and adjustmentoftheappliances
are compatible.
CAUTION
Dryer(s) should never be left unattended while in operation.
When discarding or storing your old clothes dryer,
remove the door.
Lorsque vous entreposez ou mettez votre sécheuse
au rebut, enlevez-en la porte.
“Caution:Label allwirespriorto disconnectionwhenservicing
controls. Wiring errors can cause improper operation.”
«Attention: Au moment de l’entretien des commandes,
étiquetez tous les fils avant de les débrancher. Des erreurs
de câblage peuvent entraîner un fonctionnement inadéquat
etdangereux.»
WARNING
Childrenshould not be allowedtoplayon or near thedryer(s).
Children should be supervised if near dryer(s) in operation.
Under no circumstances should the dryer door switch(es),
lint door/drawer switch(es), or heat safety circuit(s) ever be
disabled.
Do not modify this appliance.
Thedryer mustneverbe operatedwithanyof thebackguards
orservicepanelsremoved. Personal injuryorfire couldresult.
Thedryer must never be operatedwithoutthelintfilter/screen
in place, even if an external lint collection system is used.
If the hi-limit switch trips, a service call is required to
investigate the reason and resolve the issue.
FOR YOUR SAFETY
Donotdrymopheadsinthedryer. Donotusedryerinthe
presence of dry cleaning fumes.
The dryers must not be installed or stored in an area where it
will be exposed to water and/or weather.
Thewiring diagram for the dryeris located behind the control
panel.
Proposition 65
Use of this product could expose you to substances
from fuel combustion that contain chemicals
known to the State of California to cause cancer,
birth defects and other reproductive harm.
!WARNING In the State of Massachusetts, the following
installation instructions apply:
■Installations and repairs must be performed
by a qualified or licensed contractor,
plumber, or gasfitter qualified or licensed
by the State of Massachusetts.
■If using a ball valve, it shall be a T-handle
type.
■A flexible gas connector, when used, must
not exceed 3 feet.
Safety Precautions ....................................................4
Specifications .............................................................5
Installation Procedures............................................7
Unpacking / Setting Up...............................................7
Location Requirements ..............................................7
Dryer Enclosure Requirements .................................7
Fresh Air Supply Requirements ................................8
Exhaust Requirements...............................................8
Electrical Information................................................10
Gas Information........................................................14
Steam Information ....................................................16
Preparation for Operation / Start-Up.......................18
Preoperational Test ..................................................18
Preoperational Instructions .....................................19
Shutdown Instructions ............................................20
Service / Parts Information ...................................20
Service .....................................................................20
Parts..........................................................................20
Routine Maintenance ..............................................20
Cleaning ....................................................................20
Adjustments .............................................................21
Lubrication................................................................21
Data Label Information ...........................................21
Procedure for Functional Check
of Replacement Components ..............................22
Manual Reset
Burner Hi-Limit Instructions.................................23
Phase 7 ....................................................................23
DualTimer.................................................................23
S.A.F.E. System .........................................................24
Non-Coin Programming .........................................27
Coin Programming ..................................................28

4113260-4
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
Do not spray aerosols in the vicinity of this appliance while
it is in operation.
Purchaser and user should consult the local gas supplier
for proper instructions to be followed in the event the user
smells gas. The instructions should be posted in a
prominent location.
What To Do If You Smell Gas
• Do not try to light any appliance.
• Do not touch any electrical switch.
• Do not use any phone in your building.
• Clear the room, building, or area of all occupants.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency, or gas supplier.
Dryers must be exhausted to the outdoors.
Although the manufacturer produces a very versatile dryer,
there are some articles that, due to fabric composition or
cleaning method, should not be dried in it.
Safety Precautions ___________________
!WARNING
For your safety, the information in this manual must
be followed to minimize the risk of fire or explosion or
to prevent property damage, personal injury, or loss
of life.
The dryer must never be operated with any of the
back guards, outer tops, or service panels removed.
Personal injury or fire could result.
!WARNING
You must disconnect and lock out the electric supply
and the gas supply or the steam supply before any
covers or guards are removed from the machine to
allow access for cleaning, adjusting, installation, or
testing of any equipment per OSHA standards.
!WARNING
Articles left in the dryer after the drying and cooling
cycles have been completed can create a fire hazard.
!WARNING
Personal injury or fire could result should the dryer
door switch, lint door switch, or heat safety circuit
ever be disabled.
!WARNING
Dry only water washed fabrics. Do not dry articles
spotted or washed in dry cleaning solvents, a
combustible detergent, industrial chemicals, or “all
purpose” cleaner. Explosion could result.
Do not dry rags or articles coated or contaminated
with gasoline, kerosene, oil, paint, or wax. Explosion
could result.
Do not dry mop heads. Contamination by wax or
flammable solvents will create a fire hazard.
Do not use heat for drying articles that contain plastic,
foam, sponge rubber, or similarly textured rubber
materials. Drying in a heated tumbler may damage
plastics or rubber and may be a fire hazard.
IMPORTANT: Dryer must be installed in a location/
environment, which the ambient temperature remains
between 40º F (4.44º C) and 130º F (54.44º C).
CE ONLY
IMPORTANT: This appliance must only be installed and
operated in the country of destination indicated on the
dryer’s data plate. If the appliance is to be installed and
operated in a country other than the one indicated on the
data plate, a data plate amendment must be obtained
from Maxidry.
IEC335 applies.
Read and follow all caution and direction labels attached to
the dryer.
For safety, proper operation, and optimum performance, the
dryer must not be operated with a load less than sixty-six
percent, 19 lb (8.61 kg) of its rated capacity.
This dryer is not to be used in the presence of dry cleaning
solvents or fumes.
Remove articles from the dryer as soon as the drying cycle
has been completed.
For personal safety, the dryer must be electrically grounded
in accordance with local codes and/or the National Electrical
Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada,
the Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990
or LATESTEDITION.
NOTE: Failure to electrically ground the dryer properly will
void the warranty.
Under no circumstances should the dryer door switch, lint
door switch, or heat safety circuit ever be disabled.
!WARNING
The collection of lint in the burner area and exhaust
ductwork can create a potential fire hazard.
The possible presence of residual quantities of aggressive
or decomposed chemicals in the load may produce damage
to the machine and harmful fumes.
A program should be established for the inspection and
cleaning of lint in the burner area, exhaust ductwork, and
areaaroundthe backofthe dryer. Thefrequencyof inspection
and cleaning can best be determined from experience at
each location.

113260-4 5
Specifications _____________________________________________________________________
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GASELECTRIC
STEAM**
Shaded areas are stated in metric equivalents 1/5/04
* Reversing dryer available with 3-phase (3ø) 1/2 hp (0.373 kW) motor standard.
** Specify air-operated or electromechanical steam damper system. Air-operated steam damper system must be provided with
clean, dry and regulated 80 psi ± 10 psi (5.51 bar ± 0.68 bar) air supply.
NOTE: The manufacturer reserves the right to make changes in specifications at any time without notice or obligation.

6113260-4
Specifications _____________________________________________________________________

113260-4 7
Installation Procedures ______________
Installation should be performed by competent technicians
in accordance with local and state codes. In the absence of
these codes, the installation must conform to applicable
American National Standards: ANSI Z223.1-LATEST
EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-
LATEST EDITION (National Electrical Code) or in Canada,
the installation must conform to applicable Canadian
Standards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/
CGA-B149.2-M91(L.P.Gas)orLATESTEDITION(forGeneral
Installation and Gas Plumbing) or Canadian Electrical
Codes Parts 1 & 2 CSAC22.1-1990 or LATEST EDITION (for
Electrical Connections).
Unpacking / Setting Up _______________
Remove protective shipping material (i.e., plastic wrap and
optional shipping box) from dryer.
IMPORTANT: Dryer must be transported and handled in
an upright position at all times.
The dryer can be moved to its final location while still
attached to the skid or with the skid removed. To unskid the
dryer, locate and remove the four bolts securing the base of
the dryer to the wooden skid. Two are at the rear base
(remove the back panel for access), and two are located in
the bottom of the lint chamber. To remove the two bolts
located in the lint chamber area, remove the lint door.
With the skid removed, to make it easier to slide the dryer
into its final position, slightly lower all four leveling legs, so
that the dryer will slide on the legs instead of the base frame.
Leveling Dryer
The dryer is equipped with four leveling legs, one at each
corner of the base. Two are located at the rear of the dryer
base, and two are located in the lint chamber (coop). To
increase bearing life and improve efficiency, the dryer should
be tilted slightly to the rear.
Location Requirements ______________
Before installing the dryer, be sure the location conforms to
local codes and ordinances. In the absence of such codes
or ordinances the location must conform with the National
FuelGasCodeANSI.Z223.1LATESTEDITION, or inCanada,
the installation must conform to applicable Canadian
Standards: CAN/CGA-B149.1-M91 (Natural Gas) or CAN/
CGA-B149.2-M91(L.P.Gas)orLATESTEDITION(forGeneral
Installation and Gas Plumbing).
The dryer must be installed on a sound level floor capable
of supporting its weight. Carpeting must be removed from
the floor area that the dryer is to rest on.
IMPORTANT: “The dryer must be installed on
noncombustible floors only.”
The dryer must not be installed or stored in an area where it
will be exposed to water and/or weather.
The dryer is for use in noncombustible locations.
Provisions for adequate air supply must be provided as
noted in this manual (refer to Fresh Air Supply
Requirements).
Clearance provisions must be made from noncombustible
construction as noted in this manual (refer to Dryer
Enclosure Requirements).
Provisions must be made for adequate clearances for
servicing and for operation as noted in this manual (refer to
Dryer Enclosure Requirements).
Dryer must be exhausted to the outdoors as noted in this
manual (refer to Exhaust Requirements).
Dryer must be located in an area where correct exhaust
venting can be achieved as noted in this manual (refer to
Exhaust Requirements).
IMPORTANT: Dryer should be located where a minimum
amount of exhaust duct will be necessary.
The dryer must be installed with a proper exhaust duct
connection to the outside.
The dryer must be installed with provisions for adequate
combustion and make-up air supply.
CAUTION: This dryer produces combustible lint and
must be exhausted to the outdoors. Every 6 months,
inspect the exhaust ducting and remove any lint
buildup.
IMPORTANT: Dryer must be installed in a location/
environment, which the ambient temperature remains
between 40º F (4.44º C) and 130º F (54.44º C).
Dryer Enclosure Requirements ______
Bulkheads and partitions should be made of
noncombustible materials and must be located a minimum
of 12-inches (30.48 cm) above the dryer’s outer top;
18-inches (45.72 cm) for steam dryers, except along the
front of the dryer, which may be closed if desired.
NOTE: Allowances must be made for opening the control
door.
With the exception of the floor, clearances shown are for
combustible construction.
X = 12-inch (30.48 cm) minimum, 24-inches (60.96 cm) is suggested for ease
of maintenance.
* 1-inch (2.54 cm) maximum for electric dryers.
** 18-inch (45.72 cm) minimum for steam dryers.

8113260-4
Exhaust Requirements _______________
Exhaust ductwork should be designed and installed by a
qualified professional. Improperly sized ductwork will create
excessive back pressure, which results in slow drying,
increased use of energy, and shutdown of the burner by the
airflow (sail) switch, burner hi-limits, or lint chamber hi-limit
protector thermostat. The dryer must be installed with a
proper exhaust duct connection to the outside.
When possible, it is suggested to provide a separate (single)
exhaust duct for each dryer.
The design of the flue system shall be such that any
condensate formed when operating the appliance from cold
shall either be retained and subsequently re-evaporated or
discharged.
CAUTION: This dryer produces combustible lint and
must be exhausted to the outdoors.
Improperly sized or installed exhaust ductwork can
create a potential fire hazard.
IMPORTANT: It is recommended that exhaust or booster
fans not be used in the exhaust ductwork system.
The exhaust ductwork should be laid out in such a way that
the ductwork travels as directly as possible to the outdoors
with as few turns as possible. The shape of the ductwork is
not critical as long as the minimum cross section area is
provided. Single or independent dryer venting is
recommended.
It is suggested that the use of 90° turns be avoided; use 30°
or 45° angles instead.
The ductwork should be smooth inside with no projections
from sheet metal screws or other obstructions, which will
collect lint. When adding ducts, the ducts to be added should
overlap the duct to which it is connected. All ductwork joints
must be taped to prevent moisture and lint from escaping
into the building. Additionally, inspection doors should be
installed at strategic points in the exhaust ductwork for
periodic inspection and cleaning.
IMPORTANT: When connecting ductwork to the dryer
exhaust duct, be sure that when screws are used they do
not restrict the operation (both opening and closing) of the
damper.
NOTE: When the exhaust ductwork passes through a wall,
ceiling, or roof made of combustible materials, the
opening must be 2-inches (5.08 cm) larger than the duct
(all the way around). The duct must be centered within
this opening.
To protect the outside end of the horizontal ductwork from
the weather, a 90° elbow bent downward should be installed
where the exhaust exits the building. If the ductwork travels
vertically up through the roof, it should be protected from the
weather by using a 180° turn to point the opening downward.
In either case, allow at least twice the diameter of the duct
between the duct opening and the nearest obstruction (i.e.,
roof or ground level).
NOTE: Air considerations are important for proper and
efficient operation.
Dryers may be positioned sidewall to sidewall. However, a
1/16” (1.59 mm) minimum allowance must be made for
opening and closing of the control door. It is suggested that
the dryer be positioned about 2 feet (0.61 meters) away
from the nearest obstruction for ease of installation,
maintenance, and service (to be measured from the back
guard). Refer to the illustration on previous page for details.
Fresh Air Supply Requirements ______
This appliance may only be installed in a room that meets
the appropriate ventilation requirements specified in the
national installation regulations.
The air supply (make-up air) must be given careful
consideration to ensure proper performance of each dryer.
An unrestricted source of air is necessary for each dryer. As
a general rule, an unrestricted air entrance from the outdoors
(atmosphere) of a minimum of 1-1/2 square feet (0.14
square meters) is required for each dryer. If registers or
louvers are installed over the openings, then the area must
be increased. It is not necessary to have separate
make-up air openings for each dryer. Common make-up
air openings are acceptable. However, they must be set up
in such a manner that the make-up air is distributed equally
to the dryers. The dryer must be installed with provisions
for adequate combustion and make-up air supply.
Example: For a bank of eight dryers, two unrestricted
openings measuring 3 feet by 2 feet (0.914 meters by 0.61
meters) are acceptable.
IMPORTANT: Make-up air openings should not be
located in an area directly near where exhaust vents exit
the building.
Allowances must be made for remote or constricting
passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
IMPORTANT: Make-up air must be provided from a
source free of dry cleaning solvent fumes. Make-up air
that is contaminated by dry cleaning solvent fumes will
result in irreparable damage to the motors and other dryer
components.
NOTE: Component failure due to dry cleaning solvent
fumes will void the warranty.

113260-4 9
IMPORTANT: Do not use screens, louvers, or caps on the
outside opening of the exhaust ductwork.
Exhaust back pressure measured by a manometer at the
dryer exhaust duct area must be no less than 0 and must
not exceed 0.3 in WC (0.74 mb).
NOTE: As per the National Fuel Gas Code, “Exhaust ducts
for type 2 clothes dryers shall be constructed of sheet
metal or other noncombustible material. Such ducts shall
be equivalent in strength and corrosion resistance to
ducts made of galvanized sheet steel not less than 26
gauges (0.0195-inches [0.50 mm]) thick.”
Single Dryer Venting
Horizontal Venting
When a single 8-inch (20.32 cm) horizontal vent is used,
the ductwork to the outlet cannot exceed 68 feet (20.7
meters), refer to Illus. A below. This calculation of 68 feet
(20.7 meters) compensates or allows for the use of a
maximum of only one elbow, (which is the outside outlet
protection).
Illus. A
Vertical Venting
When vertical single 8-inch (20.32 cm) venting is used (refer
to Illus. B below), the ductwork from the dryer to the outside
outlet cannot exceed 55 feet (16.7 meters). This calculation
compensates for the use of a maximum of three elbows
including the two elbows creating the 180° (turned
downward) outside outlet.
Illus. B
If the length of the duct run or quantity of elbows used
exceeds the above noted specifications, the cross-sectional
area of the ductwork must be increased in proportion to the
number of elbows or duct run added.
IMPORTANT: For extended ductwork runs, the cross
section area of the duct can only be increased to an
extent. For extended ductwork runs, a professional HVAC
firm should be consulted for proper venting information.
Multiple Dryer (Common) Venting
If it is not feasible to provide separate exhaust ducts for
each dryer, ducts for individual dryers may be channeled
into a common main duct. Each dryer is provided with a
back draft damper. The individual ducts should enter the
bottom or side of the main duct at an angle not more than
45° in the direction of the airflow.
The main common duct may be any shape as long as the
minimum cross-sectional area is provided. The main duct
should be tapered with the diameter increasing before each
individual 8-inch (20.32 cm) duct is added (refer to Illus. C
for horizontal venting and Illus. D for vertical venting on the
following page).
IMPORTANT: No more than four dryers maximum should
be connected to one main common duct with a vertical
run.
NOTE: Distance between dryer single ducts being
connected to the main common duct must be a minimum
of 34-1/4” (87 cm) dryer width.
Ductwork should be laid out in such a manner where
allowances are made at rear area of the dryer for removal
of rear service panels or guards.

10 113260-4
The illustrations below show the minimum cross section
area for multiple dryer venting. These figures must be
increased in proportion if the main duct run from the last
dryer to where it exhausts has numerous elbows or is
unusually long.
IMPORTANT: For extended ductwork runs, the cross
section area of the duct can only be increased to an
extent. For extended ductwork runs, a professional HVAC
firm should be consulted for proper venting information.
Refer below for Multiple Dryer Horizontal Venting and Vertical
Venting examples/illustrations.
Horizontal Venting
Illus. C
IMPORTANT: It is recommended that exhaust or booster
fans not be used in the exhaust ductwork system.
Vertical Venting
Illus. D
Electrical Information ________________
Electrical Requirements
All electrical connections must be made by a properly
licensed and competent electrician. This is to ensure that
the electrical installation is adequate and conforms to local
and state regulations or codes. In the absence of such
codes, all electrical connections, materials, and
workmanship must conform to the applicable requirements
of the National Electrical Code ANSI/NFPA NO. 70-LATEST
EDITION or in Canada, the Canadian Electrical Codes Parts
1 & 2 CSAC22.1-1990 or LATEST EDITION.
IMPORTANT: Failure to comply with these codes or
ordinances, and/or the requirements stipulated in this
manual can result in personal injury or component failure.
NOTE: Component failure due to improper installation will
void the warranty.
Each dryer should be connected to an independently
protected branch circuit. The dryer must be connected with
copper wire only. Do not use aluminum wire, it could create
a fire hazard. The copper conductor wire/cable must be of
proper ampacity and insulation in accordance with electric
codes for making all service connections.
NOTE: The use of aluminum wire will void the warranty.
An individual ground circuit must be provided to each
dryer, do not daisy chain.
Component failure due to improper voltage application
will void the warranty.
The manufacturer reserves the right to make changes in
specifications at any time without notice or obligation.
IMPORTANT: A separate protected circuit must be
provided to each dryer.
The dryer must be connected to the electric supply shown
on the data label. In the case of 208 VAC or 240 VAC, the
supply voltage must match the electric service
specifications of the data label exactly.
The wire size must be properly sized to handle the related
current.
!WARNING
Dryer must never be operated without the lint filter/
screen in place, even if an external lint collection
system is used.
!WARNING
208 VAC and 240 VAC are not the same. Any damage
done to dryer components due to improper voltage
connections will automatically void the warranty.