American Dryer Corp. Gas/Electric/Steam AD-75HS manual

AD-75HS Installation Manual 081398GS/abe ADC Part No. 113039 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 (Gas/Electric/Steam) W ARNING: For your safety the infor[...]

Retain This Manual In A Safe Place For Future Reference American Dryer Corporation products embody 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 properly licensed technicians should service this equipment. OBSER VE ALL SA[...]

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 , ADJUSTING , INST ALLA TION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) S T ANDARDS. CAUTION LABEL ALL WIRES PRIOR [...]

DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE V APOR AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE . FOR YOUR SAFETY DO NOT DR Y MOP HEADS IN THE DR YER. DO NOT USE DR YER IN THE PRESENCE OF DR Y CLEANING FUMES. IMPOR T ANT PLEASE OBSER VE ALL SAFETY PRECAUTIONS displayed on the equipment and/or specified in the installation/operator[...]

Table of Contents SECTION I IMPOR T ANT INFORMA TION ............................................................................... 3 A. Receiving and Handling ..................................................................................................... ....... 3 B. Safety Precautions .......................................................[...]

SECTION V I ROUTINE MAINTENANCE ................................................................................. 4 3 A. Cleaning ................................................................................................................... ............... 43 B. Adjustments ......................................................................[...]

3 SECTION I IMPORTANT INFORMATION 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 damage w[...]

4 B. 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. WARNING: The dryer must never be operated with any of the back guards, outer tops, or service panels removed. PERSONAL INJUR Y or FIRE COULD RES[...]

5 7. A program should be established for the inspection and cleaning of lint in the heating unit area, exhaust duct work, and inside the dryer. The frequency of inspection and cleaning can best be determined from experience at each location. WARNING : The collection of lint in the burner area and exhaust duct work can create a potential fire hazard[...]

6 SECTION II SPECIFICATIONS/COMPONENT IDENTIFICATION A. SPECIFICATIONS Gas Electric Steam * For non-reversing models. ** A minimum of 3/4" pipe must be supplied to the gas inlet for each dryer. IMPORTANT : Steam dryers must be provided with clean, dry, regulated 80 PSI (+/- 10 psi) air supply. NOTE : ADC reserves the right to make changes in s[...]

7 Specifications ADG-75HS ADE-75 ADS-75 NOTE : ADC reserves the right to make changes in specifications at any time, without notice or obligation.[...]

8 B. COMPONENT IDENTIFICATION 1. Dryer Front 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 behind control [service] door)[...]

9 2. Dryer Rear View NOTE : 1/8-inch Compressed Air Supply Inlet (for Steam Models Only) is located behind the Electric Service Relay Box. Illus. No. Description 1 Heating Unit 2 1/8" Compressed Air Supply Inlet (behind Electric Service Relay Box for steam units Only) 3* Electric Service Relay Box 4 Tumbler Bearing Mount Assembly 5 Idler Beari[...]

10 SECTION III 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: National Fuel Gas Code ANSI.Z223.1-LATEST EDITION and/or National Electric Code ANSI/NFPA NO. 70-LATEST EDI[...]

11 B. UNP ACKING/SETTING UP Remove protective shipping material (i.e., plastic wrap, and/or optional shipping box) from dryer . IMPOR T ANT : 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. T o un-skid the dryer , locat[...]

12 C. DRYER ENCLOSURE REQUIREMENTS Bulkheads and partitions should be made of noncombustible materials and must be located a minimum of 12-inches (18-inches or more is recommended for ease of installation, maintenance , and service) above the dryer outer top, except along the front of the dryer which may be partially closed in if desired. The clear[...]

13 D. FRESH AIR SUPPLY 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 air must be continually replenished from the outdoors. If the make-up air is inadequate, drying time and drying efficiency will be adversely affected. Ignition pro[...]

14 E. EXHAUST REQUIREMENTS 1. General Exhaust Duct Work Information Exhaust duct work should be designed and installed by a qualified professional. Improperly sized duct work will create excessive back pressure which results in slow drying, increased use of energy, overheating of the dryer, and shutdown of the burner by the airflow (sail) switches,[...]

15 NOTE : Where the exhaust duct work passes through a wall, ceiling, or roof made of combustible materials, the opening must be 2-inches larger (all the way around) than the duct. The duct must be centered within this opening. a. Outside Duct Work Protection 1 ) To protect the outside end of horizontal duct work from the weather, a 90° elbow bent[...]

16 IMPORTANT : For extended duct work runs, the cross section area of the duct work can only be increased to an extent. When the duct work approaches the maximum limits noted in this manual, a professional heating venting air conditioning (HVAC) firm should be consulted for proper venting information. ALL duct work should be smooth inside with no p[...]

17[...]

18 F. ELECTRICAL INFORMATION 1. Electrical Requirements It is your responsibility to have ALL electrical connections made by a properly licensed and competent electrician to assure that the electrical installation is adequate and conforms with local and state regulations or codes. In the absence of such codes, ALL electrical connections, material, [...]

19 2. Electrical Service Specifications a. Gas and Steam Models ONLY IMPORTANT : Figures shown are for Non-Reversing Models ONLY. For reversing models contact the factory. IMPORTANT : The dryer must be connected to the electric supply shown on the data label that is affixed to the back side of the upper/top control door. In the case of 208 VAC or 2[...]

20 APPROX. AMP DRAW IMPORTANT : Figures shown are for Non-Reversing Models ONLY. For reversing models contact the factory. IMPORTANT : The dryer must be connected to the electric supply shown on the data label that is affixed to the back side of the upper/top control door. In the case of 208 VAC or 230/240 VAC, the supply voltage must match the ele[...]

21 3. Grounding A ground (earth) connection must be provided and installed in accordance with state and local codes. In the absence of these codes, grounding must conform to applicable requirements of the National Electric Code ANSI/NF P A NO . 70-LA TEST EDITION. The ground connection may be to a proven earth ground at the location service panel. [...]

22 Actual electrical wire connections are made to the L1 and L2 terminals of the motor contactor located in the rear service box mentioned above. The ground connection is also made to the copper lug also provided in this box. If local codes permit, power to the dryer can be made by the use of a flexible U.L. listed power cord/ pigtail (wire size mu[...]

23 The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, L3, and sometimes neutral) and ground. Single-phase (1ø) power for the control circuit is done internally to the dryer. No single-phase (1ø) input connection is required on a 3-phase (3ø) dryer. For gas and steam dryers manufactured for operation at [...]

24 3) 3-Phase (3ø) W iring Connections/Hookup (for Reversing Models Only) The electrical connections on ALL 3-phase (3ø) gas dryers 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[...]

25 b. Electrically Heated Models ONL Y The only electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, L3, and sometimes neutral) and ground. Single-phase (1ø) power for the control circuit and for any single- phase (1ø) motors (if present) is done internally to the dryer by the factory at the oven contactor . No sin[...]

26 G . 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[...]

27 2. T echnical Gas Data a . Gas Specifications b. Gas Connections: Inlet connection ------------ 3/4-inch N.P .T . Inlet supply size ------------ 3/4-inch N.P .T . (minimum) Btu/hr input (per dryer) --- 200,000 1) Natural Gas Regulation is controlled by the dryer's gas valve's internal regulator . Incoming supply pressure must be consis[...]

28 3. Piping/Connections ALL components/materials must conform to National Gas Code 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 3/4" N.P .T . inlet pipe connection[...]

29 Consistent gas pressure is essential at ALL gas connections. It is recommended that a 3/4-inch 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 (W .C.) pressure. NOTE : A water c[...]

30 3. Installation Instructions T o insure an adequate supply of steam is provided, be sure that the steam lines and steam return lines are sized and laid out as stipulated in this manual. Inadequate steam lines and steam return lines or improper steam plumbing will result in poor performance and can cause component failure. Clean, dry steam must b[...]

31 c . Flexible hoses or couplings must 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. Shut-off valves for each dryer should be installed in the supply line, return line, and drip trap return line. This will allow the dryer to be iso[...]

32 3. Steam Damper Air System Connections The ADS-75 is manufactured with a pneumatic (piston) damper system which requires an external supply of compressed air . The air connection is made to the steam damper solenoid valve which is located at the rear inner top area of the dryer just in front of the electric service relay box. b. Air Connection A[...]

33 4. Steam Damper System Operation The ADS-75 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 [...]

34 5. Steam Damper Air Piston (Flow Control) Operation Adjustment Although the steam damper operation was tested and adjusted prior to shipping at 80 PSI, steam damper operation must be checked before the dryer is put into operation. Refer to the previous page ( page 33) for instructions to check steam damper operation. If steam damper adjustment i[...]

35 I. PREP ARA TION FOR OPERA TION/ST AR T -UP The following items should be checked before attempting to operate the dryer: 1. Read ALL " CAUTION ," " W ARNING ," and " DIRECTION " labels attached to the dryer . 2. Check incoming supply voltage to be sure that it is the same as indicated on the dryer data label affixe[...]

36 J. PREOPERA TIONAL TESTS ALL dryers are thoroughly tested and inspected before leaving the factory . However , a preoperational test should be performed 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 . a . Op[...]

37 Electrically Heated Dryers Check to insure that electric oven/contactor assembly is activating. 3. Make a complete operational check of ALL safety related circuits: a . Door Switch(es) b. Hi-Limit thermostats c. Sail switch - Gas and Electric Models ONL Y NOTE : T o check for proper sail switch operation ( for Gas Models and Electric Models Only[...]

38 7. Reversing Models ONL Y Basket (tumbler) dryer should never be operated with less than a 30 lb. load (dry weight). The size of the load will affect the coast-down and dwell (stop) times. The basket (tumbler) must come to a complete stop before starting in opposite direction. a . Microprocessor Models 1) Spin and stop are not adjustable in the [...]

39 L. SHUT DOWN INSTRUCTIONS If the dryer is to be shut down (taken out of service) for a period of time, the 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 [...]

40 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[...]

41 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 ( ADC Part No. 1 12254) is placed on the back side of the main door glass. These warranty cards are intended to serve the customer where we record the individual installation date and warranty information to bette[...]

42 2. Each part must be tagged with the following information: a. Model number and serial number of the dryer from which 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 marked[...]

43 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[...]

44 STEAM MODELS Clean the steam coil fins. W e suggest using compressed air and a vacuum cleaner with brush attachment. W ARNING : When cleaning steam coil fins, be careful not to bend the fins. If fins are bent, straighten by using a fin comb which is available from local air conditioning supply house. 90 DA YS 1. Remove lint from around basket (t[...]

45 B. ADJUSTMENTS 7 DA YS AFTER INST ALLA TION and EVERY 6 MONTHS THEREAFTER Inspect bolts, nuts, screws, (bearing set screws), non-permanent gas connections (unions, shut-off valves, orifices, and grounding connections). Motor and drive belts should be examined. Cracked or seriously frayed belts should be replaced. T ighten loose V -belts when nec[...]

46 SECTION VII PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT COMPONENTS 1. Microprocessor (computer) Board a . Upon completing installation of the replacement microprocessor (computer) board, reestablish power to the dryer . b. Start the drying cycle by pressing any of the preset cycle in letters "A thru F". c . V erify that the motor(s) [...]

47 d. V erify that the motor(s) heat, and door indicator lights on the back side of the microprocessor (computer) board are lit. (Refer to the illustration below . ) e . Open the main door . The dryer must stop and ALL output indicator lights on the back side of the microprocessor (computer) board must go out . (Refer to illustration above.) f . T [...]

48 d. The hot surface ignitor will turn on. After approximately 4 seconds the Glo Bar will shut off and the gas valve will be energized. The flame should now be established. e . W ith the burner flame on, remove the flame sensor wire from the S2 terminal of the HSI module. The burner flame must shut off immediately . f . Stop the drying cycle, with[...]

49 SECTION VIII REVERSING TIMER SPIN/DWELL ADJUSTMENTS Dual timer models with "reversing option" have an electric reversing timer in the electric service box which is located in the upper rear area of the dryer . Both the dwell (stop) time and basket (tumbler) spin time are adjustable by mode selection switches located on the electronic t[...]

50 When contacting American Dryer Corporation certain information is required to insure proper service/parts information from ADC . This information is on the data label located on the inside of the control door . When contacting American Dryer Corporation please have the model number and serial number available. SECTION IX TECHNICAL INFORMA TION A[...]

51 THE DA T A LABEL 1. MODEL DR YER The model number is an ADC number which describes the size of the dryer and the type of heat (gas, electric, or steam). 2. SERIAL NUMBER The serial number allows ADC to gather information on your particular dryer . 3. MANUF ACTURING CODE NUMBER The manufacturing code number is a number issued by ADC which describ[...]

52 SECTION X TROUBLESHOOTING W ARNING : 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 , ADJUSTING , INST ALLA TION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) ST ANDARDS. The[...]

53 0 ,&5 235 2& ( 6625  &2 0 38 7(5   0 2 '(/6  &2 17, 18('  , 3 0 &   : 1 $ $ .   (                        ?[...]

54 MICROPROCESSOR (C OMPUTER ) MODELS A . No L.E.D. (light emitting diode) display (for microprocessor [computer] models ONL Y)... 1. Service panel fuse blown or tripped breaker . 2. Blown control circuit L1 or L2 1/2-amp (Slo Blo) fuse. 3. Failed microprocessor controller (computer). 4. Failed control step down transformer (for 380 volts or higher[...]

55 E. Blower/Fan motor is not operating ( does not start)... 1. Microprocesssor controller (computer) motor indicator dot and relay output L.E.D. (light emitting diode) indicator dots are on ... a. Failed blower (impellor/fan) motor contactor (relay). b. Failed arc suppressor (A.S.) board. c. Failed blower (fan/impellor) motor. 2. Microprocessor co[...]

56 b. Loose connection in main door switch circuit. J . Microprocessor (computer) L.E.D. (light emitting diode) display reads "dSFL" continuously and the buzzer (tone) sounds every 30 seconds... 1. Fault in microprocessor heat sensing circuit. a. Blown "dSFL" 1/8-amp fuse on the microprocessor controller (computer). b. Failed mi[...]

57 O . Microprocessor controller (computer) locks up and L.E.D. (light emitting diode) display reads erroneous message(s) or only partial segments... 1. T ransient power voltage spikes...disconnect the electrical power to the dryer , wait one (1) minute and reestablish power to the dryer . If problem is still evident ... a. Failed microprocessor co[...]

58 T . Heating unit is not operating ( no heat)...no voltage at heating unit (i.e., Gas Model - HSI module, Electric Model - electric oven contactor , or S team Model - steam damper system pneumatic solenoid) when dryer is first started and both the heat indicator dot and the "HEA T" output L.E.D. (light emitting diode) is on ... GAS MODE[...]

59 STEAM MODELS ... 1. Fault in lint chamber sensor bracket basket (tumbler) hi-limit. U . Heating unit is not operating ( no heat)...no voltage at heating unit (i.e., Gas Model - HSI module, Electric Model - electric oven contactor , or S team Model - steam damper system pneumatic solenoid) when dryer is first started and both the heat indicator d[...]

60 ELECTRIC MODELS ... 1. Failed oven contactor/coil. 2. Failed electric heating element(s). STEAM MODELS ... 1. Air Operated System... a. No (external) compressed air (80 PSI required) to steam damper solenoid. b. Failed steam damper pneumatic solenoid. c. Steam damper stuck in closed position ...check for obstruction. d. Leak in pneumatic system.[...]

61 GAS MODELS ... 1) Low and/or inconsistent gas pressure. Natural Gas pressure - must be between 3.5 and 4.0 inches of water column (W.C.). L.P . (liquid propane) Gas pressure - must be between 10.5 and 1 1.0 inches of water column (W .C.). 2) Poor air/gas mixture at burner (too much gas or not enough air) at the burner ...yellow or poor flame pat[...]

62 STEAM MODELS ... 1) Low steam supply. a) Steam trap is too small. b) Supply line is too small. 2) Low steam pressure. 3) Insufficient make-up air. 4) Lint screen is dirty or is not being cleaned often enough. 5) Restriction in the exhaust. 6) Dirty steam coil ... a) Fins are clogged with lint. 7) Steam damper system is not functioning properly. [...]

63 Z. Main burners are burning with a yellow flame (for Gas Models ONL Y ) ... 1. Poor air/gas mixture (too much gas or not enough air) at the burner ... a. Not enough make-up air. b. Restriction in the exhaust. c. Gas pressure is too high. d. Impellor (fan/blower) is rotating in the wrong direction only (for 3ø Models ONLY) . e. Burner orifice si[...]

64 7. V-belts too tight or too loose. 8. Tumbler bearing set screws are loose. 9. Failed motor bearing. TIMER MODELS A . Dryer will not start...both drive motor and blower (impellor/fan) motor are not operating and indicator light is off ... 1. Service panel fuse blown or tripped breaker. 2. Dryer control circuit L1 or L2 1/2-amp (Slo Blo) fuse is [...]

65 D . Drive motor operates okay for a few minutes, then stops and will not restart... 1. Motor is overheating and tripping out on internal overload protector ... a . Motor air vents clogged with lint. b. Low voltage to motor . c . Failed motor . d. T umbler (basket) is binding...check for an obstruction. e . Failed idler bearings or tumbler bearin[...]

66 b. Sail switch damper is not closing or is fluttering. 1) Lint screen is dirty . 2) Restriction in the exhaust. 3) No exhaust air flow ... a ) Failed impellor (fan/blower). b) Fault in blower (impellor/fan) motor circuit (for Reversing Models ONLY) . 2. Failed burner hi-limit. 3. Failed lint chamber sensor bracket basket (tumbler) hi-limit switc[...]

67 I. No heat)...no voltage at heating unit (i.e., Gas Model - Hot Surface Ignition [HSI] module, Electric Model - electric oven contactor , or S team Model - steam damper system pneumatic solenoid)... GAS MODELS ... 1. Fault in hot surface ignition system ... a . Hot Surface Ignitor glows but no ignition and HSI module "LOCKS-OUT" ("[...]

68 d. Leak in pneumatic system. e. Failed steam damper air piston. f. Flow control valve misadjusted. 2. Electrical Mechanical System... a. Failed electrical mechanical motor. b. Steam damper stuck in closed position...check for obstruction. J. Dryer operates but is taking too long to dry... 1. Exhaust duct work run is too long or is undersized...b[...]

69 3) Sail switch is fluttering ... a) Lint screen is dirty or is not being cleaned often enough. b) Restriction in the exhaust. 4) Failed burner hi-limit...opens at incorrect temperature. 5) Gas supply may have too low a heating value. ELECTRIC MODELS ... 1) Not enough make-up air. 2) Restriction in the exhaust ... 3) Lint screen is dirty or is no[...]

70 K . Main burners are burning with a yellow flame (for Gas Models ONL Y) ... 1. Poor air/gas mixture (too much gas or not enough air) at the burner ... a . Not enough make-up air . b. Restriction in the exhaust. c . Gas pressure is too high. d. Impellor (fan/blower) is rotating in the wrong direction only (for 3ø Models ONLY) . e . Burner orific[...]

71 3. Loose basket (tumbler) tie rod. 4. Basket (tumbler) out of adjustment, or adjustment bolts (hardware) are loose. 5. Failed basket (tumbler) support. 6. Loose motor mount. 7. Failed idler , basket (tumbler), or blower drive bearings. 8. V-belts too tight or too loose. 9. Bearing set screws (either basket [tumbler], idler , or blower shaft) are[...]

ADC 113039 1 - 09/01/98-253[...]