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American Dryer Corp
ML-190HS service manual
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63 pages, 2.09 Mb
ML-190HS
Service Manual
Phase 6
Microprocessor Controls
112999SL/tcosta
ADC
Part No. 450410
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-190HS
Page
Page
Table of Contents
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 PANEL (MICROPROCESSOR)
B. CONTROL BOX
C. HSI MODULE (Gas Models ONLY)
I cant read number??
G. SPEED REDUCING SHAFT
H. TUMBLER (BASKET) BEARING ARRANGEMENT
I. TUMBLER (BASKET)
J. MAIN DOOR SWITCH
K. SAIL SWITCH (GAS MODELS ONLY)
L. HI-LIMIT (GAS MODELS ONLY)
M. MANUAL RESET THERMOSTAT
N. LINT DRAWER
O. LINT DRAWER SWITCH
P. STEAM DAMPER SYSTEM
Q. COMPRESSED AIR REQUIREMENTS
SECTION V
SERVICING
INTRODUCTION
A. COMPUTER CONTROLS 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 HSI (Hot Surface Ignition) Ignitor
C. TO REMOVE FLAME PROBE ASSEMBLY
To Replace Gas Valve (Refer to burner illustration on page 21)
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
C. THERMOSTATS To Replace Burner Hi-Limit Thermostat (Gas Models Only)
To Replace Lint Compartment Hi-Heat Protector (225 F) Thermostat
D. SAIL SWITCH ASSEMBLY (GAS MODELS ONLY)
To Replace Sail Switch
To Adjust Sail Switch
E. FRONT PANEL and MAIN DOOR ASSEMBLIES To Replace Main Door Switch
IMPORTANT: UNDER NO CIRCUMSTANCES should the door switch be disabled.
To Replace Main Door Assembly
To Install New Main Door Glass
To Replace Front Panel
To Replace Main Door Hinge Blocks
F. PULLEYS To Replace Drive Shaft Pulley
To Replace Small Speed Reducing Pulley Shaft
To Replace Large Speed Reducing Pulley
To Replace Motor Pulley
G. TUMBLER (BASKET) ALIGNMENT
H. BEARINGS To Replace Rear Drive Shaft Pillow Block Bearing
To Replace Front/Rear Speed Reducing Shaft Bearing
To Replace Rear Tumbler (Basket) Support Flange Bearing
NOTE: This may be accomplished the easiest through the lint coop.
To Replace Front Drive Shaft Pillow Block Bearing
NOTE: Check belt adjustment and readjust if necessary.
To Replace Front Idler Shaft Pillow Block Bearing
To Replace Rear Idler Shaft Pillow Block Bearing
I. BASKET and SUPPORT To Replace Tumbler (Basket) and Tumbler (Basket) Support
IMPORTANT: Never strike the shaft directly with a hammer.
NOTE: Belts must always be replaced in pairs (matched sets).
J. V-BELTS (See illustrations in section F Pulleys)
V-Belt Tension Adjustment (Drive Shaft to Speed Reducing Shaft)
NOTE: Always replace V-belts in pairs.
V-Belt Tension Adjustment (Motor To Speed Reducing Shaft)
To Replace V-Belts From The Blower Motor To The Fan
K. MOTORS To Replace Drive Motor
To Replace Impellor Motor (Fan Shaft Drive - 50/60 Hz Gas and Steam Models)
To Replace Fan Shaft and/or Fan Shaft Bearings
L. IMPELLOR
M. LINT DRAWER ASSEMBLY To Replace Lint Screen
To Replace Lint Drawer Switch
SECTION VI
TROUBLESHOOTING
Page
H. Dryer operates but is taking too long to dry...
I. Thermal overload for drive motor is tripping...
J. Overload for impellor (fan) motor is tripping...
K. Dryer is tripping the burner hi-limit safety thermostat...
L. Display reads Temp Sensor Fail Check Temp Sensor Fuse. Dryer Sensor Circuit Failure...
N. There is excessive vibration coming from the tumbler (basket)...
O. Dryer does not start. Display reads Main Door...
SECTION VII
ELECTRICAL TROUBLESHOOTING
SECTION VIII
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
SECTION IX
L.E.D. DISPLAY/CODES
A. L.E.D. (light emitting diode) DISPLAY OPERATING STATUS
NOTE: Refer to the illustration on the following page for details.
B. PHASE 6 OPL MICROPROCESSOR L.E.D. (light emitting diode) DISPLAYS
48
C. L.E.D. CODES
1. Display Codes
D. COMPUTER LOGIC and WIRING DIAGRAM
Page
D. Blower motor does not operate, drive motor runs...
E. No Heat drive and blower motors run, display reads normal (Gas Models)...
F. No Heat drive and blower motors run, display reads normal (Steam Models)...
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Page
SECTION X
TECHNICAL INFORMATION
A. MOTOR PLATE (HIGH and LOW VOLTAGE)
B. DATA LABEL
C. USING A MANOMETER How To Use A Manometer
NOTE: Place manometer in a position so that readings can be taken at eye level.
D. TOOL LIST