American Dryer Corp. Gas/Electric/Steam ML-55HS Installation Manual Download Page 36 | Manualshive

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32

5. Steam System Operation

The MLS-55 steam damper shown in

Diagram 1

in the

illustration below

, allows the coil to stay constantly

charged eliminating repeated expansion and contraction. When the damper is opened, the air immediately
passes through the already hot coil, providing instant heat to start the drying process. When the damper is
closed, ambient air is drawn directly into the basket (tumbler), allowing a rapid cool down (

Diagram 2

).

Diagram 1

shows the damper in the heating (open) mode, allowing heat into the basket (tumbler).

Diagram 2

shows the damper in the cool down (closed) mode, pulling ambient air directly into the basket

(tumbler) without passing through the coils.

NOTE

: With the dryer off or with no air supply, the steam damper is in cool down mode as shown in

Diagram 2.

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Summary of Contents for Gas/Electric/Steam ML-55HS

Page 1: ...ll the firedepartment Installation and service must be performed by a qualifiedinstaller serviceagencyorthegas supplier AVERTISSEMENT Assurez vousdebien suivre les instructions données dans cette noticepourréduireauminimum lerisque d incendieoud explosionoupourévitertout dommagematériel touteblessureoulamort Ne pas entreposer ni utiliser d essence ni d autresvapeursouliquidesinflammablesdans le vo...

Page 2: ...ations colors and material and to change or discontinue models Important For your convenience log the following information DATE OFPURCHASE ____________________________ MODEL NO __________________________________________ RESELLER SNAME _______________________________________________________________________________________ Serial Number s ____________________________________________________________...

Page 3: ...r operation Attention Lor des opérations d entretien des commandes étiqueter tous fils avant de les déconnecter Toute erreur de câblage peut étre une source de danger et de panne WARNING UNDER NO CIRCUMSTANCES should the dryer door switches lint door switch heat safety circuit ever be disabled IMPORTANT YOU MUSTDISCONNECTand LOCKOUTTHE ELECTRIC SUPPLYandTHE GAS SUPPLYBEFOREANYCOVERSorGUARDSAREREMO...

Page 4: ...ONS displayed on the equipment or specified in the installation manual included with the dryer Dryers must not be installed or stored in an area where it will be exposed to water or weather The wiring diagram for the dryer is located in the front electrical control box area DRYERMUSTNEVERBEOPERATEDWITHOUTTHELINTFILTER SCREEN IN PLACE EVENIFANEXTERNALLINTCOLLECTIONSYSTEMISUSED WARNING ...

Page 5: ...npacking SettingUp 11 C DryerEnclosureRequirements 12 D FreshAir Requirements 13 E ExhaustRequirements 14 F ElectricalInformation 18 G GasInformation 25 H SteamInformation 28 I Preparation For Operation Start Up 34 J PreoperationalTests 35 K PreoperationalInstructions 37 L ShutDownInstructions 38 SECTION IV SERVICE PARTS INFORMATION 39 A Service 39 B Parts 39 SECTION V WARRANTY INFORMATION 40 A Re...

Page 6: ...ION VII PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 44 SECTION VIII REVERSING TIMER SPIN DWELL ADJUSTMENTS 47 SECTION IX DATA LABEL INFORMATION 48 A Data Label 48 SECTION X BURNER and BASKET TUMBLER LINT CHAMBER MANUAL RESET HI LIMIT INSTRUCTIONS 50 Gas 50 ElectricorSteam 51 ...

Page 7: ... number received and the number refused must be noted on the receipt 4 If you determine that the dryer was damaged after the trucker has left your location you should call the delivering carrier s freight terminal immediately and file a claim The freight company considers this concealed damage This type of freight claim is very difficult to get paid and becomes extremely difficult when more than a...

Page 8: ... call your gas supplier from a neighbor s phone Follow the gas supplier s instructions f If you cannot reach your gas supplier call the fire department 4 Installation and service must be performed by a qualified installer service agency or gas supplier 5 Dryer s must be exhausted to the outdoors 6 Although ADC produces a very versatile dryer there are some articles that due to fabric composition o...

Page 9: ...s have been completed can create a fire hazard 12 DO NOT operate steam dryers with more than 125 PSI 8 6 bars steam pressure Excessive steam pressure can cause damage to the steam coil and or harm personnel 13 Replace leaking flexible hoses or other steam fixtures immediately DO NOT operate the dryer with leaking flexible hoses PERSONAL INJURY MAY RESULT 14 The normal PH level for copper type stea...

Page 10: ...r 40 320 kcal hr 140 000 btu hr 35 280 kcal hr GAS INLET 1 2 1 2 VOLTAGE AVAILABLE 120 VOLTS OR 230 VOLTS ELECTRIC AIRFLOW 600 cfm 17 cmm OVEN SIZE APPLIED VOLTAGE PHASE Kw btu hr kcal hr 208 1ø 240 1ø 208 3ø 240 3ø 380 3ø 416 3ø 460 3ø 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 20 68 260 17 200 103 90 33 24 81 910 20 640 70 62 62 36 31 30 102 3...

Page 11: ...7 Specifications MLG 55HS MLE 55 MLS 55 NOTE ADC reserves the right to make changes in specifications at any time without notice or obligation ...

Page 12: ...ront View Illus No Description 1 Controls 2 Control top access Door Assembly 3 Main Door Assembly 4 Lint Compartment Area lint screen located behind door 5 Data Label and Installation Label located on the backside of the upper control door ...

Page 13: ...elay Box 4 Basket Tumbler Bearing Mount Assembly 5 Idler Bearing Mount Assembly 6 Blower Motor Assembly Reversing Models ONLY 7 Leveling Leg rear 8 Basket Drive Motor Assembly 9 Dryer Exhaust Electric service connections for gas and steam models are made in this box NOTE 1 8 inch compressed air supply inlet for steam models only is located behind the electric service relay box ...

Page 14: ... P Gas or LATEST EDITION for General Installation and Gas Plumbing 1 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 2 The dryer must not be installed or stored in an area where it will be exposed to water and or weather ...

Page 15: ... ALL four 4 leveling legs so that the dryer will slide on the legs instead of the base frame To increase bearing life and improve efficiency the dryer should be tilted slightly to the rear The basket tumbler is supported during shipping by a wooden block REMOVE THIS BLOCK BEFORE STARTING THE DRYER IMPORTANT For microprocessor controller computer or computer models this wooden block must be removed...

Page 16: ...llowance must be made for opening and closing of the control door and the lint 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 above for details NOTE Air considerations are important for proper and efficient operation IMPORTANT E...

Page 17: ... 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 D FRESH AIR REQUIREMENTS When the dryer is operating it draws in room air heats it passes this air through the basket tumbler and exhausts it out of the building Therefore the room airmust be c...

Page 18: ...L ductwork should be smooth inside with no projections from sheet metal screws or other obstructions which will collect lint When adding ducts the duct to be added should overlap the duct to which it is to be connected ALL ductwork jointsmust be taped to prevent moisture and lint from escaping into the building Inspection doorsshould be installed at strategic points in the exhaust ductwork for per...

Page 19: ... provide a separate exhaust duct for each dryer The exhaust duct 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 It is suggested that the use of 90 turns in the ducting be avoided use 30 and or 45 angles instead The shape of the exhaust ductwork is not critical so long as the minimum cross section area is provided IMP...

Page 20: ...rategic points in the exhaust ductwork for periodic inspection and cleaning of lint from the ductwork 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 a Outside Ductwork Protection 1 To protect the outside end of horizontal duc...

Page 21: ...17 ...

Page 22: ... or CAN CGA B149 2 M91 Liquid Propane L P Gas 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 dryermust be connecte...

Page 23: ...changes in specifications at any time without notice or obligation MLG 55 Gas MLS 55 Steam ELECTRIC SERVICE SPECIFICATIONS PER DRYER IMPORTANT 208 VAC and 230 240 VAC ARE NOT THE SAME When ordering specify exact voltage NOTES A Fuse ratings are dual element time delay current limiting class RK1 or RK5 ONLY B Circuit breakers are thermal magnetic industrial motor curve type ONLY For others calculat...

Page 24: ...ipe or hot water pipe The grounded cold water pipemust have metal to metal connection ALL the way to the electrical ground If there are any non metallic interruptions such as a meter pump plastic rubber or other insulating connectors they must be jumped out with no 4 copper wire and securely clamped to bare metal at both ends IMPORTANT For personal safety and proper operation the dryer must be gro...

Page 25: ...up NON REVERSING MODELS ONLY The electrical connections on ALL 3 phase 3ø gas and steam dryers are made into the rear service box located at the upper left area of the dryer Electrical connections for electrically heated dryers are made in the electric oven area located at the upper rear area of the dryer NOTE A CIRCUIT SERVICINGEACH DRYER MUST BE PROVIDED If local codes permit power to a gas or s...

Page 26: ...hase 1ø input connection is required on a 3 phase 3ø dryer For gas and steam dryers manufactured for operation at 3 phase 3ø the electrical connections are made at the power distribution block located in the service box at the rear upper left corner of the dryer The ground connection is made to the copper lug also provided in this box To gain access to the service box contactor the service box cov...

Page 27: ... dryer can be hard wired directly to the service breaker panel In ALL cases a strain relief must be installed where the wiring enters the dryer For gas and steam dryers manufactured for operation at 3 phase 3ø the electrical connections are made at the power distribution block located in the service box at the rear upper left corner of the dryer The ground connection is made to the copper lug also...

Page 28: ... be grounded A ground lug has been provided for this purpose Input connection wiring must be sized properly to handle the dryer s current draw This information is printed on the dryer s data label IMPORTANT A separate circuit servicing each dryer must be provided The electrical input connections are made at the electric oven contactor located inside the assembly at the rear center upper section of...

Page 29: ...se irreparable damage to the gas valve which will VOID THE WARRANTY WARNING FIRE or EXPLOSION COULD RESULT 1 Gas Supply The gas dryer installation must meet the American National Standard National Fuel Gas Code ANSI Z223 1 LATEST EDITION or in Canada the Canadian Installation Codes CAN CGA B149 1 M91 Natural Gas or CAN CGA B149 2 M91 L P Gas or LATEST EDITION as well as local codes and ordinances ...

Page 30: ... 10 5 inches 26 1 mb water column There is no regulator or regulation provided in an L P dryer The water column pressuremust be regulated at the source L P tank or an external regulator must be added to each dryer TYPE OF GAS L P Conversion Kit Part Number ADC MODEL NUMBER BTU Per Hour Rating kcal hr Rating Natural Liquid Propane Qty D M S Part Number Qty D M S Part Number MLG 55 160 000 40 320 3 ...

Page 31: ...yer is 1 2 inch N P T For ease in servicing the gas supply line of each dryer must have its own shutoff valve The size of the main gas supply line header will vary depending on the distance this line travels from the gas meter or in the case of L P gas the supply tank other gas operated appliances on the same line etc Specific information regarding supply line size should be determined by the gas ...

Page 32: ...g supplied IMPORTANT The dryer and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1 2 psig 3 5 kPa NOTE The dryer must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure test of the gas supply system at test pressures equal to ...

Page 33: ...ise along with a drip trap and check valve This will prevent any condensate from entering the steam coil c Flexible hoses or couplingsmust be used The dryer vibrates slightly when it runs and this will cause the steam coil connections to crack if they are hard piped to the supply and return mains d Shutoff valves for each dryer should be installed in the supply line return line and drip trap retur...

Page 34: ...team supply piping should be pitched 1 4 inch 6 35 mm for every 1 foot 0 30 meters back towards the steam supply header causing the condensate in the line to drain to the header Install a bypass trap in any low point to eliminate wet steam IMPORTANT Flexible hose coupling must be used Coil failure due to hard plumbing connections will VOID THE WARRANTY ...

Page 35: ... Connection Air connection to system 1 8 inch N P T c No air regulator or filtration is provided with the dryer External regulation filtration of 80 PSI 5 52 bars must be provided It is suggested that a regulator filter gauge arrangement be added to the compressed air line just before the dryer connection This is necessary to insure that correct and clean air pressure is achieved COMPRESSED AIR SU...

Page 36: ...heat to start the drying process When the damper is closed ambient air is drawn directly into the basket tumbler allowing a rapid cool down Diagram 2 Diagram 1 shows the damper in the heating open mode allowing heat into the basket tumbler Diagram 2 shows the damper in the cool down closed mode pulling ambient air directly into the basket tumbler without passing through the coils NOTE With the dry...

Page 37: ...justed prior to shipping at 80 PSI 5 52 bars steam damper operation must be checked before the dryer is put into operation Refer to the previous page for instructions to check steam damper operation If steam damper adjustment is necessary locate the flow control valve and make the necessary adjustments as noted below ...

Page 38: ...ed at the factory prior to shipping However each sail switch adjustment must be checked to assure that this important safety control is functioning Refer to page 36 for Sail Switch Adjustment 5 GAS MODELS be sure that ALL gas shutoff valves are in the open position 6 Be sure ALL side and base panels are on the dryer 7 Check ALL service doors to insure that they are closed and secure 8 Be sure the ...

Page 39: ... which has internal diagnostics If ignitionis not established within three 3 times the heat circuit in the HSI module will lockout until it is manually reset To reset the HSI system open and close the main door and restart the dryer b A gas pressure test should be taken at the gas valve pressure tap of each dryer to assure that the water column W C pressure is correct and consistent NOTE Water col...

Page 40: ...KET COATING The basket tumbler is treated with a protective coating We suggest dampening old garments or cloth material with a solution of water and nonflammable mild detergent and tumbling them in the basket tumbler to remove this coating 8 Make a complete operational check of ALL operating controls a For microprocessor models check controller computer programs selections 1 Each microprocessor co...

Page 41: ... adjustable in the Manual timed Mode b Dual Timer Models 1 Both dwell stop time and the basket tumbler spin timeare adjustable Refer to theillustration on page 47 11 Check to insure that ALL setscrews i e basket tumbler drive idler etc are tight K PREOPERATIONAL INSTRUCTIONS 1 To start the dryer a Microprocessor Controller Computer Dryers 1 The light emitting diode L E D display will read REAdY 2 ...

Page 42: ...following must be performed 1 Discontinue power to the dryer either at the external disconnect switch or the circuit breaker 2 Discontinue the heat supply a GAS MODELS discontinue the gas supply 1 SHUT OFF external gas supply shutoff valve 2 SHUT OFF internal gas supply shutoff valve located in the gas valve burner area b STEAM MODELS discontinue the steam supply 1 SHUT OFF external location furni...

Page 43: ...erial numberso that your inquiry is handled in an expeditious manner B PARTS 1 Replacement parts should be purchased from the reseller from whom theADC equipment was purchased If the reseller cannot be contacted or is unknown contact theADC Parts Department for a reseller in your area Parts may also be purchased directly from the factory by calling theADC Parts Department at 508 678 9000 or you ma...

Page 44: ...hom you purchased the equipment and request a dryer warranty form If the reseller cannot be contacted or is unknown warranty information can be obtained from the factory by contacting the ADC Warranty Department at 508 678 9000 NOTE Whenever contacting the ADC factory for warranty information be sure to have the dryer s model numberand serial numberavailable so that your inquiry can be handled in ...

Page 45: ...ansit Damage claims are the responsibility of the shipper IMPORTANT No replacements credits or refunds will be issued for merchandise damaged in transit 5 ALL returns should be shipped to the ADC factory in such a manner that they are insured and a proof of delivery can be obtained by the sender 6 Shipping charges are not the responsibility of ADC ALL returns should be prepaid to the factory Any C...

Page 46: ... average usage which is considered six 6 to eight 8 operational running hours per day SUGGESTED CLEANING SCHEDULE EVERY SECOND or THIRD LOAD Clean the lint screen every second or third load A clogged lint screen will cause poor dryer performance The lint screen is located behind the lint door in the base of the dryer Open the lint door brush the lint off the lint screen and remove the lint Inspect...

Page 47: ...olts nuts screws bearing setscrews and non permanent gas connections unions shutoff valves orifices and grounding connections Motor and drive belts should be examined Cracked or seriously frayed belts should be replaced Tighten loose V belts when necessary Complete operational check of controls and valves Complete operational check ofALL safety devices door switches lint drawer switch sail switch ...

Page 48: ...tart the drying cycle by pressing any of the preset cycles in letters A F 1 Basket tumbler in Forward Mode clockwise CW 2 Basket tumbler in Reverse Mode counterclockwise CCW indicator for reversing models only 3 Heat on indicator 4 On indicator dryer is in operation mode c Verify that the motor s and the heat indicator dots in the microprocessor controller computer light emitting diode L E D displ...

Page 49: ...ing Models Only 3 Rev Reverse output L E D indicator for optional Reversing Models Only 4 HT 1 Heat output L E D indicator 5 Fuse Main Fuse input L E D indicator 6 Lint Lint Door input L E D indicator 7 Main Main Door input L E D indicator 8 Drum Basket Tumbler Hi Limit input L E D indicator 9 Sail Sail Switch input L E D indicator 10 Burn Burner Hi Limit input L E D indicator 11 Flame Burner Cont...

Page 50: ... flame must shut off immediately f Stop the drying cycle with the flame sensor wire still removed restart the drying cycle g The Hot Surface Ignitor will turn on and after approximately 4 seconds the hot surface ignitor will shut off The gas valve will be energized and a burner flameshould be evident for approximately 7 seconds and then shut off h The HSI module will attempt two 2 additional ignit...

Page 51: ...r area of the dryer Both the dwell stop time and basket tumbler spin time are adjustable by mode selection switches located on the electronic timer as noted in the illustration below TIMING LEGEND SPIN TIME Adjustment Position Number 1 2 3 4 5 Time in Seconds 30 60 90 120 150 DWELL Stop TIME Adjustment Position Number 1 2 3 4 5 Time in Seconds 5 6 3 7 6 8 9 10 2 Values shown are 1 second ...

Page 52: ... information from American Dryer Corporation This information is on the data label located on the backside of the upper control door When contacting American Dryer Corporationplease have themodel numberand serial numberavailable SECTION IX DATA LABEL INFORMATION A DATA LABEL Contact American Dryer Corporation ...

Page 53: ... options on your particular model 4 TYPE OF HEAT This describes the type of heat for your particular dryer gas natural gas or steam 5 HEAT INPUT for GAS DRYERS This describes the heat input in British Thermal Units per Hour BTUH 6 ORIFICE SIZE for GAS DRYERS Gives the number drill size used 7 ELECTRIC SERVICE This describes the electric service for your particular model 8 GAS MANIFOLD PRESSURE for...

Page 54: ...lay will show the applicable error code described above along with an audio indication If the drum temperature is above 100º F 38º C the dryer will continue to run with no heat for 3 minutes or until the drum temperature has flattened below 100º F 38º C The CLEAR STOP button on the Phase 6 keyboard touch pad must be pressed to clear the error condition The open manual reset hi limit thermostat mus...

Page 55: ...0º F 38º C the dryer will continue to run with no heat for 3 minutes or until the drum temperature has flattened below 100º F 38º C The CLEAR STOP button on the Phase 6 keyboard touch pad must be pressed to clear this dRUM SAFETY FAIL condition The open manual reset hi limit thermostat must be reset manually prior to the start of the next cycle This hi temperature condition may be caused due to a ...

Page 56: ...ADC 113000 9 11 23 05 0 ...

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