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American Dryer Corp. AD-758 User Manual

American Dryer Corp. AD-758
61 pages
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AD-758
Service Manual
052802ASILVA/mcronan ADC Part No. 450418
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
Telephone: (508) 678-9000 / Fax: (508) 678-9447
e-mail: techsupport@amdry.com
www.amdry.com

Table of Contents

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American Dryer Corp. AD-758 Specifications

General IconGeneral
BrandAmerican Dryer Corp.
ModelAD-758
CategoryDryer
LanguageEnglish

Summary

SECTION I IMPORTANT INFORMATION

Safety Precautions

Detailed safety measures and warnings for dryer operation and maintenance.

SECTION II ROUTINE MAINTENANCE

Cleaning

Procedures for cleaning lint, exhaust systems, and components.

Adjustments

Guidelines for making necessary adjustments after installation and periodically.

Lubrication

Instructions for lubricating motor and idler bearings.

SECTION III INSTALLATION REQUIREMENTS

Enclosure, Air Supply, and Exhaust Requirements

Requirements for dryer enclosure, air supply, and exhaust systems.

Electrical and Gas Requirements

Specifications and codes for electrical and gas connections.

Operational Service Check Procedure

Steps to perform after installation to ensure proper operation.

SECTION IV DESCRIPTION OF PARTS

Control Panel (Microprocessor)

Details on the microprocessor-based control panel functions.

Control Panel (Non-Microprocessor)

Information on timer-based control panels for older models.

Control Box

Location and contents of the electronic control components.

Direct Spark Ignition (DSI) Module (Gas Models Only)

Function and purpose of the DSI module in gas dryers.

Gas Burner Assembly

Components of the gas burner system.

Drive Motor

Specifications and mounting of the main drive motor.

Blower Motor and Impellor (Non-Reversing)

Details on the blower motor and impeller for non-reversing models.

Blower Motor and Impellor (Reversing)

Details on the blower motor and impeller for reversing models.

Idler Assembly

Description of the idler assembly for belt tensioning.

Basket (Tumbler) Bearing and Pulley Arrangement

Components for supporting and driving the basket.

Basket (Tumbler)

Construction and parts of the dryer basket.

Main Door Switch

Function and location of the door safety switch.

Sail Switch (Gas Models Only)

Operation of the sail switch for airflow detection.

Hi-Limit (Gas Models Only)

Function of the hi-limit thermostat at the burner.

Automatic Reset Thermostat

Role of the thermostat in the lint compartment.

Lint Drawer

Location and function of the lint drawer.

Lint Drawer Switch

Safety switch ensuring the lint drawer is closed.

Steam Damper System

Operation of the steam damper using compressed air.

Compressed Air Requirements

Specifications for compressed air supply for steam models.

Temperature Sensor Bracket (Noncomputer)

Details on the thermostat bracket for non-computer models.

SECTION V SERVICING

Introduction

General safety and procedures for servicing the dryer.

Computer Controls

Instructions for replacing the computer or keyboard assembly.

Ignition Controls

Procedures for replacing the spark ignitor.

Thermostats

Steps to replace burner hi-limit and hi-heat protector thermostats.

Sail Switch Assembly (Gas Models Only)

How to replace and adjust the sail switch.

Front Panel and Main Door Assemblies

Procedures for replacing door switch, door assembly, and front panel.

Pulleys

Instructions for replacing basket, idler, and motor pulleys.

Basket (Tumbler) Assembly

Steps for vertical and lateral alignment of the basket.

Bearings (Refer to the Illustrations in Section F “Pulleys”)

Replacing rear and front basket support pillow block bearings.

Motors and Impellors

Procedures for replacing drive motor and impellor motors.

To Replace Lint Drawer Switch

Steps for replacing the lint drawer switch.

SECTION VI TROUBLESHOOTING

No display on computer...

Troubleshooting steps for a blank computer display.

Computer will not accept keyboard (touch pad) entries...

Diagnosing issues with keyboard input on the computer.

Dryer will not start, but computer display indicators are on...

Troubleshooting a dryer that won't start with display indicators active.

Drive motor runs, burner is on, but basket (tumbler) will not turn...

Diagnosing why the basket isn't turning while the motor runs.

Dryer operates, probe sparks, but gas does not flow...

Diagnosing issues where sparks occur but gas doesn't flow.

Dryer operates but is taking too long to dry...

Identifying causes for extended drying times.

Thermal overload for drive motor is tripping...

Addressing issues with the drive motor thermal overload.

Overload for impellor (fan) motor is tripping...

Troubleshooting overload conditions for the impellor motor.

Dryer is cycling on burner hi-limit safety thermostat...

Diagnosing cycling due to the hi-limit thermostat.

Display reads “dSFL,” dryer sensor circuit failure...

Troubleshooting "dSFL" error indicating sensor circuit failure.

Dryer does not start. Display reads "door”...

Diagnosing "door" error indicating door switch issues.

There is excessive vibration coming from the basket (tumbler)...

Troubleshooting excessive vibration from the dryer basket.

SECTION VII ELECTRICAL TROUBLESHOOTING

PHASE 5 OPL SYSTEM DIAGNOSTICS

Overview of the Phase 5 OPL system's diagnostic capabilities.

Diagnostic (L.E.D. Display) Failure Codes

Codes for identifying failures via L.E.D. display.

L.E.D. DISPLAY INDICATORS

Explanation of L.E.D. indicators on the microprocessor controller.

L.E.D. DISPLAY/CODES

Understanding L.E.D. display codes for cycle status and faults.

SECTION VIII TECHNICAL INFORMATION

MOTOR DATA LABEL (HIGH AND LOW VOLTAGE)

Understanding the motor data label for wiring.

DATA LABEL

Information found on the dryer's data label for service.

USING A MANOMETER

Guide on how to use a manometer for pressure readings.

TOOL LIST

A list of recommended tools for servicing the dryer.

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