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450428 service manual
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62 pages, 1.67 Mb
121099DMG/tcosta
ADC
Part No. 450428
ML-130
Service Manual
Phase 6 Microprocessor
Timer Controls
American Dryer Corporation
88 Currant Road
Fall River, MA 02720-4781
Telephone: (508) 678-9000 / Fax: (508) 678-9447
e-mail: techsupport@amdry.com
Contents
Main
Retain This Manual In A Safe Place For Future Reference
Important
ML-130
Page
Page
Table of Content
Page
SECTION I
IMPORTANT INFORMATION
A. SAFETY PRECAUTIONS
Page
SECTION II
ROUTINE MAINTENANCE
A. CLEANING
B. ADJUSTMENTS
C. LUBRICATION
SECTION III
INSTALLATION REQUIREMENTS
A. ENCLOSURE, AIR SUPPLY, and EXHAUST REQUIREMENTS
B. ELECTRICAL and GAS REQUIREMENTS
C. OPERATIONAL SERVICE CHECK PROCEDURE
Page
SECTION IV
DESCRIPTION OF PARTS
A. CONTROL BOX
B. DRIVE MOTOR
C. HSI (HOT SURFACE IGNITION) MODULE (Gas Models Only)
D. GAS BURNER ASSEMBLY
E. BLOWER MOTOR and IMPELLOR
F. IDLER ASSEMBLY
Page
J. SAIL SWITCH (Gas and Electric Models Only)
K. HI-LIMIT (Gas and Electric Models Only)
L. MANUAL RESET THERMOSTAT
M. LINT DRAWER
N. LINT DRAWER SWITCH
O. STEAM DAMPER SYSTEM
SECTION V
SERVICING
INTRODUCTION
WARNING: PERSONAL INJURY COULD RESULT.
A. COMPUTER CONTROLS To Replace Computer Control Panel
To Replace Computer
To Replace Keyboard (Touchpad) Label Assembly
To Replace Microprocessor Temperature Sensor Probe
NOTE: DO NOT remove screws.
B. IGNITION CONTROLS
To Remove Hot Surface Ignitor (refer to illustration above)
To Remove Flame Sensor Probe
HSI Ignitor Flame Sensor Probe
To Replace Gas Valve (Refer to burner illustration on previous page [page 17].)
To Replace Main Burner Orifices
To Test and Adjust Gas (Water Column) Pressure
To Convert from Natural Gas to L.P. Gas
To Replace Burner Tubes
To Replace HSI (Hot Surface Ignition) Module
IMPORTANT: UNDER NO CIRCUMSTANCES should heat circuit safety devices ever be disabled.
NOTE: Models manufactured as of 1998 are equipped with a manual reset hi-limit thermostat.
To Replace Manual Reset Tumbler Hi-Heat Protector (225 F [107 C]) Thermostat
IMPORTANT: UNDER NO CIRCUMSTANCES should heat safety devices be disabled.
NOTE: DO NOT remove the screws.
D. SAIL SWITCH ASSEMBLY (Gas and Electric Models Only)
To Replace Sail Switch
To Adjust Sail Switch
E. FRONT PANEL and MAIN DOOR ASSEMBLIES To Replace Main Door Switch
Page
To Replace Front Panel
To Replace Main Door Hinge Block
F. PULLEYS To Replace Tumbler (Basket) Pulley
To Replace Small Idler Pulley
To Replace Large Idler Pulley
To Replace Motor Pulley
G. TUMBLER (BASKET) ASSEMBLY Tumbler (Basket)
Alignment (Vertical) (Up and Down Adjustment)
Tumbler (Basket) Alignment (Lateral) (Side to Side Adjustment)
To Replace Tumbler (Basket) or Tumbler (Basket) Support
IMPORTANT: Never strike the shaft directly with a hammer .
To Replace Front Tumbler (Basket) Support Pillow Block Bearing
To Replace Front Idler Shaft Pillow Block Bearing
To Replace Rear Idler Shaft Pillow Block Bearing
I. V-BELTS
NOTE: Belts must always be replaced in pairs (matched sets).
V-Belt Tension Adjustment (Tumbler [Basket] to Idler)
V-Belt Tension Adjustment (Motor to Idler)
To Replace V-Belts
J. MOTORS To Replace Drive Motor
To Replace Impellor Motor (Fan Shaft Drive)
Page
SECTION VI
TROUBLESHOOTING
C. Dryer will not start, but computer display indicators are on...
D. Drive motor runs, burner is on, but tumbler (basket) will not turn...
E. Dryer operates but is taking too long to dry...
Page
I. Display reads Temp Sensor Failure Check T emp Sensor Fuse. Dryer Sensor Circuit Failure...
J. Dryer does not start. Display reads main door or lint door with an audio indication...
K. There is excessive vibration coming from the tumbler (basket)...
SECTION VII
PHASE 6 OPL SYSTEM DIAGNOSTICS
A. DIAGNOSTIC (L.E.D. [light emitting diode] DISPLAY) FAILURE CODES
Page
B. L.E.D. (light emitting diode) DISPLAY INDICATORS
Page
1. FAN (BLOWER) Output L.E.D. Indicator
2. FOR (FORWARD) Output L.E.D. Indicator (for Optional Reversing Model ONL Y)
3. REV (REVERSE) Output L.E.D. Indicator (for Optional Reversing Models ONLY)
4. AIR (AIR JET) Output L.E.D. Indicator - OPTIONAL
5. HT1 (HEAT) Output L.E.D. Indicator
6. FUSE (MAIN FUSE) Input L.E.D. Indicator
7. LINT (LINT DOOR) Input L.E.D. Indicator
8. MAIN (MAIN DOOR) Input L.E.D. Indicator
Page
D. L.E.D. CODES 1. Display Codes
Page
E. COMPUTER LOGIC and WIRING DIAGRAM
Page
1. No Display Condition
2. Drive motor reverses but does not forward, blower motor runs
3. Drive motor works in forward mode but does not reverse, blower motor runs
4. Blower motor does not operate, drive motor runs
5. Lint Door Condition
6. Main Door Condition
7. No Heat drive and blower motors run, display reads normal (gas models).
8. Microprocessor (Computer)
IMPORTANT
MANUAL RESET HI-LIMIT INSTRUCTIONS
FOR PHASE 6 MODELS
SECTION VIII
TECHNICAL INFORMA TION
A. MOTOR PLATE (HIGH and LOW VOLTAGE)
B. DATA LABEL
Information on the Data Label
C. HOW TO USE A MANOMETER
NOTE: Place manometer in a position so that readings can be taken at eye level.
D. TOOL LIST