American Dryer Corp. ML-410 manual

For replacement parts, contact the distributor from which the dryer was purchased or American Dryer Corporation 88 Currant Road Fall River MA 02720-4781 T elephone: (508) 678-9000 / Fax: (508) 678-9447 e-mail: techsupport@amdry .com 022200DMG/tcosta ADC Part No. 113128 W ARNING: For your safety the information in this manual must be followed to min[...]

Retain This Manual In A Safe Place For Futur e Reference Replacement parts can be obtained from your distributor or the ADC factory . When ordering replacement parts from the factory , you can F AX your order to ADC at (508) 678-9447 or telephone your orders directly to the ADC Parts Department at (508) 678-9000. Please specify the dryer model numb[...]

IMPOR T ANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPL Y and THE GAS SUPPL Y or THE STEAM SUPPL Y BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING , ADJUST - ING , INST ALLA TION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) ST ANDARDS. CHILDREN SHOULD NOT BE ALLOW[...]

W ARNING The dryer must never be operated with any of the back guards, outer tops, or service panels r emoved. PERSONAL INJUR Y or FIRE COULD RESUL T . IMPOR T ANT PLEASE OBSER VE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/operator's manual included with the dryer . Dryers must not be installed or stored[...]

Table of Contents ML-410 REFERENCE GUIDE ................................................................................ 3 INTRODUCTION ...................................................................................................... 5 ML-410 MACHINE OPERA TIONAL SUMMAR Y .......................................................................[...]

SECTION V W ARRANTY INFORMA TION .............................................................................. 5 1 A. Returning W arranty Card(s) ...................................................................................................... 51 B . Parts .......................................................................................[...]

3 ML-410 Refer ence Guide[...]

4[...]

5 INTRODUCTION ML-410 MACHINE OPERA TIONAL SUMMAR Y The model ML-410 incorporates one (1) EMERGENCY ST OP (E-S top) BUTTON located centrally on the Right Front Control Door . This RED MUSHROOM PUSH-BUTTON is PUSH TO STOP the machine and TURN T O RELEASE or PULL TO RELEASE type control device. This button must be in the relea[...]

6 JOG (Forward/Reverse Push-Buttons) These two (2) push-buttons, located towards the left side of the Right Front Control Door , are for either loading or unloading the tumbler (basket). JOG functions are only enabled when the doors are open. NOTE: There is a PLC controlled DWELL TIME between forward jog or reverse jog selection to prev[...]

7 ML-410 MACHINE OPERA TION TROUBLESHOOTING INFORMA TION END OF CYCLE/HEA TER F AUL T INDICA T OR The End of Cycle light located on the top of the ML-410, is triggered by the End of Cycle Signal of the Phase 7 Microprocessor Controller (computer) I/O (input/output) board. The 1 second flashing is accomplished by a Flasher Module located[...]

8 3. If Air Jet L.E.D. (light emitting diode) is on then check the wiring from the Phase 7 Microprocessor Controller (computer) to the air valve. 4. Faulty air valve. LOAD/DR Y/UNLOAD (Selector Switch) and TIL T FUNCTION (Of f - On Selector Switch) As mentioned in the machine summary (refer to page 5 ), the LOAD/DR Y/UNLOAD selector switch an[...]

9 DR Y This selection prepares the machine for a Material Drying Command from the Phase 7 Microprocessor Controller (computer). NOTE: Before a drying cycle can be selected, the tumbler (basket) section must be in the level position and both the Front Horizontal Doors as well as the Lint Drawer must be closed. The PLC (Programmable Logic Contr[...]

10 GAS PRESSURE The natural gas pressure supplied to the dryer must be between 6-inches (14.92 mb) and 12-inches of W .C. (water column) - 29.9 mb - pressure. If the supply pressure is above 12-inches water column (29.9 mb) than an external regulator must be installed to reduce the gas supply pressure to between 6-inches (14.92 mb) and 12- inches o[...]

11 Refer to the system ladder diagram for HEA T signal information. Ther e are several safety devices that must be satisfied prior to ignition. Any one of these safety devices can cause NO IGNITION, therefor e a BURNER F AU L T...i.e., FRONT AIRFLOW SWITCH REAR AIRFLOW SWITCH EXHAUST MANUAL RESET HI-LIMIT SWITCH FRONT BURNER MANUAL RESE[...]

12 SYSTEM LADDER DIAGRAM The SYSTEM LADDER DIAGRAM is an overview on the electrical connections of the ML-410. This diagram is for signal flow information and is a tool to direct an individual in the correct direction for troubleshooting this machine. The ML-410 system is divided into a number of electrical sections which are as follows: 1. R[...]

13 OPTIONAL SPRINKLER CONTROL SIGNALS 4. Left Hand Control Cabinet The thermal magnetic overload and reversing contactor for the tumbler (basket) motor! The OPTIONAL SPRINKLER CIRCUIT main control panel will be located in the left front electrical enclosure. If a SPRINKLER OPTION is included with the ML-410, this panel will include an AUTOMA TIC[...]

14 SECTION I IMPOR T ANT INFORMA TION A. RECEIVING and HANDLING The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or optional box) as a means of preventing damage in transit. Upon delivery , the dryer and/or packaging, and wooden skid should be visually inspected for shipping damage. If any dam[...]

15 B. SAFETY PRECAUTIONS W ARNING: 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. W ARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJUR Y or FIRE COULD[...]

16 7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust duct work, and area around the back of the dryer . The frequency of inspection and cleaning can best be determined from experience at each location. W ARNING: The collection of lint in the burner area and exhaust duct work can create a potentia[...]

17 Maxi mum Capaci t y (Dry W eight ) 410 l bs. 186.4 k g Mi nim um Capaci t y ( D r y W eight ) 250 l bs. 113.65 kg T umbl er ( Basket ) Diam et er 68-3/ 4" 174.6 cm T umbl er ( Basket ) Depth 66-3/ 8" 168.6 cm Tumb ler (B a sk et) V o lume 1 4 3 cu . f t. 4.05 cu.m. D riv e Mo to r 7 -1/2 H P 5.6 kw B l ow er Motor ( G as/ Steam ) 25 H [...]

18 B. DIMENSIONS WARNING: Dryer should be located where a minimum length of exhaust duct will be necessary . 0 1 4 - L MT IL T IN G C L EARAN CE A LLO W AN C E S T L I T D R A W R O F / R O O D 1s e h c n i - 2 4 1 m c 8 6 . 0 6 3 T L I T Y A W - 2 / R O O D 1s e h c n i - 2 4 1 m c 8 6 . 0 6 3 T L I T R A E R / R O O D 2s e h c n i - 2 4 1 m c 8 6[...]

19 ML-410 1 Door/2-W ay T ilt NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.[...]

20 ML-410 1 Door/2-W ay T ilt NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.[...]

21 MLS-410 1 Door/2-W ay T ilt NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.[...]

22 ML-410 1 Door/2-W ay T ilt with Inlet Air Adapter NOTE: ADC reserves the right to make changes in specifications at any time, without notice or obligation.[...]

23 SECTION III INST ALLA TION PROCEDURES Installation in a proper location 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: National Fuel Gas Code ANSI.Z223.1-LA TEST EDITION and/or National Electrical Code A[...]

24 MLG-410 1 Door/Forward Tilt with Sprinkler[...]

25 1. Reassembly for the MLG-410 1 Door/Forward T ilt with Sprinkler Gas Model Dryer ... Lift the tumbler (basket) section onto the base... a. Forward tilting dryers have two (2) tilting pistons located in the rear corners of the dryer base and two (2) piston posts located in the front corners of the dryer base. On the top of the tilting pistons an[...]

26 e. Secure the 28-inch (71.12 cm) diameter exhaust duct transition piece to the dryers rectangular exhaust duct with the 1/4-20 self-tapping screws (supplied with the dryer). The exhaust duct exits from the rear of the base. f. On dryers equipped with automatic (piston operated) load doors, reconnect the two (2) poly-flo air lines that run fro[...]

27 MLS-410 2 Door/2-W ay T ilt[...]

28 1. Reassembly for the MLS-410 2 Door/2-W ay T ilt Steam Model Dryer ... Lift the tumbler (basket) section onto the base. a. 2-W ay tilting dryers have four (4) tilting pistons, one (1) located in each corner of the dryer base. On the top of each tilting piston is a clevis blocks. Use the four (4) 1/2 x 1-1/4 hex head bolts and lock washers (s[...]

29 f. Secure the 28-inch (71.12 cm) diameter exhaust duct transition piece to the dryers rectangular exhaust duct with the 1/4-20 self-tapping screws (supplied with the dryer). The exhaust duct exits from the rear of the base. g. On dryers equipped with automatic (piston operated) load doors, reconnect the four (4) poly-flo air lines that run fr[...]

30 B. FRESH AIR SUPPL Y REQUIREMENTS When the dryer is operating, it draws in room air , heats it, passes this air through the tumbler (basket), and exhausts it out of the building. Therefore, the room air must be continually replenished from the outdoors. If the make-up air is inadequate, drying time and efficiency will be adversely affected. Igni[...]

31 C. EXHAUST REQUIREMENTS NOTE: For 1 Door ML-410 dryer models, the 28-inch (71.12 cm) diameter exhaust duct exits from the rear of the base. For 2 Door ML-410 dryer models, the 28-inch (71.12 cm) diameter exhaust duct exits from the left side of the base. NOTE: For 1 Door/2-W ay T ilt ML-410 dryer models, keep the exhaust ducting at least 36-inch[...]

32 IMPOR T AN T : Exhaust back pressure measured by a Magnehelic in the exhaust duct should not exceed 0.5 inches of water column (1.24 mb). NOTE: Where the exhaust passes through a wall, ceiling, or roof made of combustible materials, the opening must be 2-inches (5.08 cm) lar ger (all the way around) than the duct. The duct must be centered withi[...]

33 1. Filter/Regulator Assembly The compressed air supply to the dryer is connected into the 3/8 F .T .P . fitting of the filter/regulator assembly which is located at the bottom rear of the right side of the base. The filter/regulator assembly performs two (2) essential functions. The filter removes most solids and liquid particles from the com[...]

34 3. OPTIONAL Automatic (Piston Operated) Load/Unload Doors If the dryer is equipped with the AUT OMA TIC DOOR OPTION, then the loading doors are operated by two (2) pneumatic pistons located above the load doors. On two (2) door models, the unloading doors on the back of the dryer will also be controlled by two (2) pistons, located above the unlo[...]

35 2. Electrical Service Specifications IMPOR T ANT : THE DR YER MUST BE CONNECTED T O THE ELECTRIC SUPPL Y SHOWN ON THE DA T A LABEL THA T IS AFFIXED T O THE REAR OF THE RIGHT HAND ELECTRICAL ENCLOSURE. W ARNING: 208 V AC and 230 V AC ARE NOT THE SAME . Any damage done to the dryer components due to improper voltage connections will automatically [...]

36 3. Electrical Connections NOTE: A wiring diagram is included with each dryer and is located in the blueprint pocket inside the left side control cabinet. The main electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, and L3), GROUND, and in the case of 4 wire service, the Neutral . These electrical connections are [...]

37 F . GAS INFORMA TION It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the gas plumbing installation is adequate and conforms with local and state regulations or codes. In the absence of such codes, ALL plumbing connections, materials, and workmanship must conform to the applicable require[...]

38 2. T echnical Gas Data a. Gas Specifications Refer to the illustration on page 12 . b. Gas Connections Run a 2 (5.08 cm) gas pipe from the main gas header to the dryer . There is a 2 (5.08 cm) gas pipe connection at the bottom of the dryer base. Inlet Connection ----------- one (1) 2-inch F .P .T . Btu/hr input (per dryer) - - - 1,600,000 [...]

39 3. Piping /Connections ALL components/materials must conform to National Fuel Gas Code ANSI Z223.1-LA TEST EDITION specifications. It is important that gas pressure regulators meet applicable pressure requirements and that gas meters be rated for the total amount of ALL the appliance BTU s being supplied. The dryer is provided with a 2-inch N[...]

40 Consistent gas pressure is essential at ALL gas connections. It is recommended that a 2-inch (5.08 cm) pipe gas loop be installed in the supply line serving a bank of dryers. An in-line pressure regulator must be installed in the gas supply line (header) if the (natural) gas pressure exceeds 12.0 inches of water column (29.9 mb) pressure. NOTE: [...]

41 G . STEAM INFORMA TION It is your responsibility to have ALL plumbing connections made by a qualified professional to assure that the steam plumbing installation is adequate and conforms with local and state regulations or codes. IMPOR T AN T : Failure to comply with the requirements stipulated in this manual can result in component failure whic[...]

42 a. The presence of condensate in the steam supply will cause water hammer and subsequent heat exchanger (steam coil failure). The steam supply connection into the main supply line must be made with a minimum 10-inch (25.4 cm) riser . This will prevent any condensate from draining towards the dryer . b. The steam supply piping to the dryer must i[...]

43 4. S team Damper Air System Connections The MLS-410 is manufactured with a pneumatic (piston) damper system which requires an external supply of compressed air . The connection is made at the left hand side on top of the dryer . a. Air Requirements b. Air Connections Air connection to system --- 1/8-inch N.P . T . c. No air regulation is provide[...]

44 5. S team Damper System Operation The MLS-410 steam damper system shown 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 c[...]

45 6. S team Damper Air Piston (Flow Control) Operation Adjustment Steam damper operation was tested and adjusted prior to shipping at 80 PSI (5.512 bars). If steam damper adjustment is necessary , locate the flow control valve and make the necessary adjustments as noted below . NOTE: Adjust both flow control valves equally , so that both pistons o[...]

46 I. PREOPERA TIONAL TESTS ALL dryers are thoroughly tested and inspected before leaving the factory . However , a preoperational test should be preformed before the dryer is publicly used. It is possible that adjustments have changed in transit or due to marginal location (installation) conditions. 1. T urn on electric power to the dryer . 2. Mak[...]

47 NOTE: Dryer can be stopped at any time by opening the main door or by pressing the CLEAR/ ST OP key . T o restart the dryer , press the ENTER/ST AR T key or a preprogrammed cycle key (i.e., E). NOTE: Pressing keyboard (touchpad) key A, B, C, D, and F will also start the dryer . The six preprogramme[...]

48 6. Make a complete operational check of ALL safety-related circuits (i.e., lint drawer switch and sail switches on Gas Models). 7. A r eversing tumbler (basket) should never be operated with less than a 250-pound (1 13.39 kg) load (dr y weight) . The size of the load will affect the coast-down and dwell (stop) times. The tumbler (basket) must co[...]

49 NOTE: Lint drawer must be ALL the way in place to activate the safety switch otherwise the dryer will not start. 9. Rotate the tumbler (basket/drum) by hand to be sure it moves freely . 10. Check bolts, nuts, screws, terminals, and fittings for security . 1 1. Check to insure air supply (80 PSI [5.512 bars]) is connected to the dryer . 12. STEAM[...]

50 SECTION IV SER VICE/P AR TS INFORMA TION A. SER VICE 1. Service must be performed by a qualified trained technician, service agency , or gas supplier . If service is required, contact the distributor from whom the ADC equipment was purchased. If the distributor cannot be contacted or is unknown, contact the ADC Service Department for a distribut[...]

51 SECTION V W ARRANTY INFORMA TION A. RETURNING W ARRANTY CARD(S) 1. Before any dryer leaves the ADC factory test area, a warranty card is placed in a plastic bag behind the right control door . These warranty cards are intended to serve the customer where we record the individual installation date and warranty information to better serve you shou[...]

52 2. Each part must be tagged with the following information: a. Model number and serial number of the dryer from which the part was removed. b. Nature of failure (be specific). c. Date of dryer installation. d. Date of part failure. e. Specify whether the part(s) being returned is for a replacement, a credit, or a refund. NOTE: If a part is marke[...]

53 SECTION VI ROUTINE MAINTENANCE A. CLEANING A program and/or schedule should be established for periodic inspection, cleaning, and removal of lint from various areas of the dryer , as well as throughout the duct work system. The frequency of cleaning can best be determined from experience at each location. Maximum operating efficiency is dependen[...]

54 W ARNING: T O A V OID THE HAZARD OF ELECTRICAL SHOCK, DISCONTINUE ELECTRICAL SUPPL Y T O THE DRYER. MONTHL Y Empty the compressed air filter bowl. Retighten set screws in the collars of the four (4) 2-inch (5.08 cm) diameter tumbler (basket) drive shaft bearings. Clean any lint accumulation from the gas valve burner area at the top of the dryer [...]

55 B. ADJUSTMENTS 7 DA YS AFTER INST ALLA TION and EVERY 6 MONTHS THEREAFTER Inspect bolts, nuts, screws (bearing set screws), nonpermanent gas connections (i.e., unions, shut-off valves, orifices), and grounding connections. Fan (impellor) V -belts, along with the drive motor V -belts should be examined and replaced if necessary . T ighten loose V[...]

56 SECTION VII COMPONENT SYSTEM DESCRIPTIONS A. TUMBLER (BASKET) DRIVE SYSTEM The tumbler (basket) is supported and driven by four (4) 1 1-inch (27.94 cm) diameter drive wheels assemblies. T wo (2) of these drive wheel assemblies are attached to a 2-inch (5.08 cm) diameter idler shaft, while the other two (2) assemblies are attached to a 2-inch (5.[...]

57 B. TUMBLER (BASKET) The tumbler (basket) is made of 14-gauge stainless steel perforated panels, five (5) stainless steel ribs, and two (2) tumbler rings. The tumbler (basket) is a completely welded assembly so the perforated panels are not removable. C. AIR BLOWER DRIVE SYSTEM The impellor (fan) used in the ML-410 dryer is a 22-1/4 (56.52 cm)[...]

58 4. Burner Box Manual Reset Hi-Limit Safety Thermostats (for Gas Models Only) These disc temperature switches have a setting of 330º F (165º C). They are located on the right side of each burner box, and they are a manual reset type of switch. These switches ensure that there is proper airflow through the burner box. Upon a low airflow conditio[...]

59 F . STEAM DAMPER ACTUA TOR SYSTEM The system consists of a hinged damper plate, two (2) pneumatic pistons (each with its own airflow needle valve) to control the speed of both pistons actuation, and a 24 volt solenoid valve. On a call for heat, a 24 volt signal is applied to the 3-way/2-position solenoid valve. This signal switches the valve [...]

60 SECTION VIII OPTIONAL SPRINKLER SYSTEM COMPONENTS OPTIONAL SPRINKLER CIRCUIT COMPONENTS AUT O EMERGENCY ST OP ( E-S top ) RELA Y This device, located in the Front Right Electrical Enclosure, supplies the main control voltage to the dryer . The ML-410 s Sprinkler Circuit supplies or removes 120 V AC to the coil of this relay for the E[...]

61 SPRINKLER and MAIN POWER CONNECTIONS There are two (2) individual power connections to an ML-410 that includes the Sprinkler System Option. 1. Main Dryer Power (three-phase [3ø]). 2. Dedicated Sprinkler System Circuit Power (single-phase [1ø]). Both of these connections are at the voltage rating of the dryer and can be installed in the Front R[...]

62 ML-410 Sprinkler Option T emperature Contr oller Settings NOTE: Refer to Controller s User  s Manual for further information on controller options. Mess age Di s p l a y Message D escri ption Set ti ngs SP T EM PE RATUR E SE T PO I NT 575º F O R 301 .6º C ALH i ALAR M HI 5 7 5º F OR 3 0 1. 6º C (NO TE : A DJUST SAME AS SP) In P I N PUT[...]

ADC 1 13128 1 - 03/13/00-25[...]