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Service Procedures
for the
Model M31, M50, M75 Dryer
Hot Surface Ignitor Gas
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781 USA
Telephone: (508) 678-9000 / Fax: (508) 678-9447
e-mail: techsupport@amdry.com
www.amdry.com
Part No. 450280
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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 i
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IMPORTANT Table of Contents You must disconnect and lockout the electric supply and the gas supply or the steam supply Part Locations and Removal ................4 before any covers or guards are removed from the machine to allow access for cleaning, Lower Front Panel Removal ......................................... 4 adjusting, installation, or testing of any equipment Upper Front Panel Removal ......................................... 4 per OSHA (Occupational Safety and Health Top Cover Remov
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Part Locations and Removal LOWER FRONT PANEL REMOVAL: TOP COVER REMOVAL: Remove the lint drawer. Remove the four screws First remove the back guard, the four screws holding located just below the loading door. Tilt the top of top cover. Next pull top cover toward the rear of the the panel out and lift the panel up and away from the dryer and lift up. dryer. For Models M31,M50,M75 For Models M31,M50,M75 LINT BOX/BLOWER ASSEMBLY REMOVAL: Unplug the motor harness. For M31, remove two screws abo
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GAS VALVE/IGNITION SYSTEM REMOVAL: Be sure to shut off the gas main and then proceed to remove electrical connections and screws indicated. Remove lower front panel. Disconnect union and screws noted with arrows. By removing the top screws you will be able to remove the burner tube. After, removing the top burner, without damaging the Hot Surface Ignitor, remove the whole gas valve assembly. Be careful during assembly not to damage the Hot Surface Ignitor. Replace assembly in the reverse or
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GAS VALVE/IGNITION SYSTEM COMPONENTS: TUMBLER SUPPORT WHEEL ASSEMBLY REPLACEMENT: For Models M31,M50,M75 The front wheel assemblies can be replaced with the lower front panel removed. Remove the three IGNITOR bolts by reaching upward with a socket or box wrench. The illustration below is provided to show the location of these wheels as the wheels cannot easily be seen while standing in front of the dryer. For Models M31 BURNER TUBE GAS VALVE OVEN HOUSING COMPONENTS: Dual Burner M50,M75 OVEN CH
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TUMBLER ALIGNMENT: EXAMPLES: Proper alignment is achieved by making the gap In the illustrations to the right, both wheel assemblies between the tumbler and openings in the front and must be moved to the right in order to move the rear bulkheads equal on all sides. tumbler right. The left wheel assembly must move a little more than the right in order to lift the tumbler. The front to bulkhead may be checked for accuracy by using a thickness gauge. The rear gap is not accessible. Marking the p
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BELT REPLACEMENT: Shut off electrical power to the dryer. Lockout and tag out supply voltages. Follow the steps to remove front middle panel. Next you will remove either the front bottom or front upper panel, depending on pocket you are working on. Remove the belt from the motor sheave. Next, remove the two screws fastening the lint coupe to the front panel. Remove the front panel screws, while holding up the basket. Tilt the top of the front panel forward. Take note of position of motor
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M31 BELT REPLACEMENT: Shut off electrical power to the dryer. Lockout and tag out supply voltages. Follow the steps to remove front middle panel. Next you will remove either the front bottom or front upper panel, depending on pocket you are working on. Remove the belt from the motor sheave. Next, remove the two screws fastening the lint coupe to the front panel. Remove the front panel screws, while holding up the basket. Tilt the top of the front panel forward. Take note of position of m
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Electrical Component Locations SAIL SWITCH AND AXIAL PROBE ASSEMBLY: ELECTRICAL PANEL: Located behind back guard. Access doors are The electrical panel is located behind the front middle provided. Back guard does not have to be removed. panel. For Models M50,M75 For Models M50,M75 DOOR SWITCH COMPUTER COVER SAIL BURNER SWITCH HIGH LIMIT For Models M31 AXIAL REVERSING PROBE RELAY DOOR SWITCH ROTATIONAL For Models M31 SENSOR SWITCH COMPUTER PANEL AXIAL PROBE COVER SAIL SWITCH 10 American D
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Notes __________________________________ EXHAUST PROBE, EXHAUST HI-LIMIT, AND LINT DRAWER SWITCH: ______________________________________ Temperature probe and exhaust hi-limit are ______________________________________ accessible without the lint box being removed. The ______________________________________ lint drawer switch can be removed after the lint box ______________________________________ is and the cover has been removed. ______________________________________ ________________________
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Part No. 450280 1-03/09/06 - 0
