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ADC ML-122 manual

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Table of contents for the manual

  • Page 1

    ADC Part No. 450412 - 4 American Dryer Corporation 88 Currant Road Fall River MA 02720-4781 USA T elephone: +1 (508) 678-9000 / Fax: +1 (508) 678-9447 e-mail: techsupport@amdry .com ww w .amdry .com ML-96 / ML-122 Ser vice Manual[...]

  • Page 2

    2 American Dryer Corporation 450412 - 4 Ret ain This Manual In A Safe Place For Future Reference American Dryer Corporation products embody advanced concept s in engineering, design, and safety . If this product is properly maintained, it will provide many years of safe, efficient, and trouble free operation. ONL Y qualified technicians should serv[...]

  • Page 3

    450412 - 4 www .amdry .com 3 IMPORT ANT Y ou 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. “Caution: Label all wires prior to disconnection when se[...]

  • Page 4

    4 American Dryer Corporation 450412 - 4 Impor tant Infor mation _______________ 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 . The dryer must never be operated with any of the back guards, oute[...]

  • Page 5

    450412 - 4 www .amdry .com 5 NOTE: Frequency can best be determined at each location. Daily (Beginning) of each work shift. Clean lint from the drawer and screen. Inspect lint screen and replace if torn. Weekly Clean lint accumulation from lint chamber , thermostat, and microprocessor temperature sensor (sensor bracket) area. W ARNING: T o avoid th[...]

  • Page 6

    6 American Dryer Corporation 450412 - 4 CAUTION: Improperly sized or installed exhaust ductwork can create a potential fire hazard . Electrical and Gas Requirements It is your responsibility to have all electrical connections made by a properly licensed and competent electrician to assure the electrical installation is adequate and conforms with lo[...]

  • Page 7

    450412 - 4 www .amdry .com 7 Gas Bur ner Assemb ly Gas heated dryers are equipped with a gas burner assembly consisting of 3 burner tubes, a gas valve, an ignitor , a flame sensor , a sail switch, a hi-limit thermost at, and an ignition control module. The inlet piping enters through the rear of the dryer on the left-hand side (viewing from the fro[...]

  • Page 8

    8 American Dryer Corporation 450412 - 4 Drive Shaft Assembly (Viewing from the front of the dryer) Behind front panel on the right side of the dryer , you can view the drive shaft assembly , which consists of a 9-inch (22.86 cm) drive pulley , two 6-inch (15.24 cm) wheels, and two 1-inch (2.54 cm) pillow block bearings. Idler Shaft Assembly (Viewin[...]

  • Page 9

    450412 - 4 www .amdry .com 9 T emper a ture Sensor Brack et This is located inside the dryer in the lint compartment above the lint screen. This bracket consists of 2 devices. One is a temperature sensor probe and the other is a high limit thermostat, which is set at 225º F (107º C). Lint Screen The lint screen is located in the front of the drye[...]

  • Page 10

    10 American Dryer Corporation 450412 - 4 Connect keypad ribbon to the computer . Reestablish electrical power to the dryer . Microprocessor T emperature Sensor Probe Replacement Discontinue electrical power to the dryer . Remove perforated panel from tumbler . Remove microprocessor sensor bracket assembly from dryer . Disconnect sensor bracket harn[...]

  • Page 11

    450412 - 4 www .amdry .com 11 W ARNING: T est all connections for leaks by brushing on a soapy water solution . NEVER TEST FOR LEAKS WITH A FLAME!!! T o Convert Natural Gas to L.P . Gas NOTE: All dryers are sold as natural gas, unless otherwise specified at the time the dryer order was placed. For L.P . gas the dryer must be converted as follows. R[...]

  • Page 12

    12 American Dryer Corporation 450412 - 4 T umbler Hi-Limit Thermostat (225º F [107º C]) Replacement Disconnect electrical power to the dryer . Open lint door . Locate sensor bracket assembly , remove the 2 nuts securing bracket assembly to the tumbler wrapper . Remove bracket assembly by slightly sliding bracket toward the rear of the dryer and t[...]

  • Page 13

    450412 - 4 www .amdry .com 13 ! Remove the remaining piping from the steam coil. Remove all of the panels surrounding the steam coil. Unbolt the steam coil and remove. W ARNING: The steam coil is heavy . A crane may be needed to remove (and install) the steam coil . Remove the steam coil damper hinges from the old coil and install them on the new s[...]

  • Page 14

    14 American Dryer Corporation 450412 - 4 Main Door Assembly Replacement Open main door . Holding the door upward remove the 2 screws from the top hinge block. Lift the door up to remove. Reverse this procedure for reinstalling new main door assembly . T o Inst all New Main Door Glass Remove main door assembly from dryer (follow main door removal pr[...]

  • Page 15

    450412 - 4 www .amdry .com 15 T umbler W heel R eplacement on Drive Assembly Discontinue electrical power to the dryer . Remove front panel from dryer . (Follow front panel replacement directions on page 14.) Remove the 10 1/4-20 x 1/4” socket button head screws from the perforated basket side. Remove wrapper assembly . Loosen V -belt. Rotate pul[...]

  • Page 16

    16 American Dryer Corporation 450412 - 4 Check the basket drive belt for proper tension. Adjust if necessary . Replace the wrapper panels. Replace the perforated tumbler panel. 1-15/16 (5 cm) Flange Bearing Replacement Disconnect electrical power to the dryer . Remove the 4 bolts securing the bearing cap located in the rear of the dryer . And remov[...]

  • Page 17

    450412 - 4 www .amdry .com 17 Motorized Impellor (Blower) Replacement Discontinue electrical power to the dryer . Remove lint draw . Remove the perforated panel inside the tumbler . Remove the bolts securing the inlet cone. Remove the inlet cone. Remove the bolts securing the motor plate to the dryer cabinet. Remove the motorized impellor along wit[...]

  • Page 18

    18 American Dryer Corporation 450412 - 4 Lint Door Switch Replacement Discontinue electrical power to the dryer . Remove the lint door panel. (For the ML-122.) Remove the front panel. (For the ML-96.) Disconnect both 4-pin connectors at the rear of the lint switch cover . Remove the 2 screws holding the lint switch cover on. Remove the lint switch [...]

  • Page 19

    450412 - 4 www .amdry .com 19 Overload for impellor (fan) motor is tripping... Either an exceptionally low or high voltage supply . Motor bearing failure. Motor vents are blocked with lint. Failed motor . Failed overload. Out of balance impellor (fan). Insufficient make-up air . Bur ner hi-limit safety ther mostat is tripping... Insufficient exhaus[...]

  • Page 20

    20 American Dryer Corporation 450412 - 4 bURNER CONTROL F AIL – This routine monitors the ignition control’s gas valve output response. If the valve output signal is not present from the ignition control within the valve time limits the Phase 6 microprocessor controller (computer) determines the ignition control has failed. If this occurs when [...]

  • Page 21

    450412 - 4 www .amdry .com 21 L.E.D. Display Indicator Number 4 On Indicator: This indicator dot is on whenever a cycle is in progress. Additionally , when the Anti-Wrinkle program is active, the indicator dot will be on whenever the Phase 6 OPL microprocessor controller (computer) is in the Guard On Time program. L.E.D. Display Indicator Number 5 [...]

  • Page 22

    22 American Dryer Corporation 450412 - 4 If the dryer is active (running) and the lint door is opened the “LINT” L.E.D. indicator will go out and the display will read “LINT dOOR.” The dryer will stop until the lint drawer has been closed, at which time the L.E.D. display will read “PRESS ST ART .” At this time, to resume the drying cyc[...]

  • Page 23

    450412 - 4 www .amdry .com 23 EE PROM F AUL T ### – Error in memory location. The ### indicates the location of the fault. Input/Output Board L.E.D. Indicators Inputs ESTOP – (RED L.E.D.): This L.E.D. will indicate the status of the E-STOP . If the E-STOP has been pressed, then the L.E.D. is on. GAS_V – (RED L.E.D.): This L.E.D. will indicate[...]

  • Page 24

    24 American Dryer Corporation 450412 - 4 How to Use a Manometer With dryer in nonoperating mode, remove plug on the gas valve pressure tap. Attach plastic tubing to pressure tap. Fitting is supplied with manometer (refer to illustration). Attach manometer to dryer using magnet. NOTE: Place manometer in a position so that readings can be taken at ey[...]

  • Page 25

    450412 - 4 www .amdry .com 25 Notes _____________________________________________________________________________________________ ___________________________________________________________________________________________________ ___________________________________________________________________________________________________ ____________________[...]

  • Page 26

    ADC Part No. 450412 4 - 01/02/08 - 0[...]