American Dryer Corp ML-78III

NOTE: When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible

materials, the opening must be 2-inches (5.08 cm) larger than the duct (all the way around).

The duct must be centered within this opening.

a. Outside Ductwork Protection

1) To protect the outside end of the horizontal ductwork from the weather, a 90° elbow bent downward

should be installed where the exhaust exits the building. If the ductwork travels vertically up

through the roof, it should be protected from the weather by using a 180° turn to point the opening

downward. In either case, allow at least twice the diameter of the duct between the duct opening

and the nearest obstruction.

IMPORTANT: DO NOT use screens, louvers, or caps on the outside opening of the exhaust

ductwork.

Contents

Main ML-78III (Gas/DSI/Phase 7 with F.S.S.) Installation Manual Retain This Manual In A Safe Place For Future Reference Important ML-78 Phase 7 (DSI) Page Page Table of Contents Page SECTION I IMPORTANT INFORMATION IMPORTANT: The dryer must be transported and handled in an upright position at ALL times. A. RECEIVING AND HANDLING B. SAFETY PRECAUTIONS Page Gas SECTION II SPECIFICATIONS/COMPONENT IDENTIFICATION A. SPECIFICATIONS Page Page Page SECTION III INSTALLATION PROCEDURES A. LOCATION REQUIREMENTS IMPORTANT: The dryer must be installed on noncombustible floors only. IMPORTANT: Dryer should be located where a minimum amount of exhaust duct will be necessary. B. UNPACKING/SETTING UP IMPORTANT: Dryer must be transported and handled in an upright position at ALL times. C. DRYER ENCLOSURE REQUIREMENTS D. FRESH AIR SUPPLY REQUIREMENTS E. EXHAUST REQUIREMENTS Page Page Page F. ELECTRICAL INFORMATION IMPORTANT: For personal safety and proper operation, the dryer must be grounded. GAS MODELS SERVICE ELECTRICAL SERVICE SPECIFICATIONS (PER DRYER) SERVICE VOLTAGE PHASE WIRE APPROX. AMP DRAW MINIMUM WIRE SIZE Single-Phase Electrical Lead Connections Page G. GAS INFORMATION TYPE OF GAS NATURAL LIQUID PROPANE TYPE OF GAS Page Page H. PREPARATION FOR OPERATION/START-UP I. PREOPERATIONAL TESTS Page J. PREOPERATIONAL INSTRUCTIONS K. SHUTDOWN INSTRUCTIONS SECTION IV SERVICE/PARTS INFORMA TION A. SERVICE B. PARTS SECTION V WARRANTY INFORMATION A. RETURNING WARRANTY CARDS B. WARRANTY C. RETURNING WARRANTY PARTS Page SECTION VI ROUTINE MAINTENANCE A. CLEANING SUGGESTED CLEANING SCHEDULE B. ADJUSTMENTS C. LUBRICATION SECTION VII REVERSING TIMER SPIN/DWELL ADJUSTMENTS TIMING LEGEND Page Page SECTION IX Page SECTION X MANUAL RESET BURNER HI-LIMIT INSTRUCTIONS WARNING: Discontinue power to dryer before attempting to reset hi-limit. A. PHASE 7 B. DUAL TIMER F.S.S. In Action FIRE SUPPRESSION SYSTEM (F.S.S.) INSTALLATION Typical water supply... Page F.S.S. Theory of Operation SYSTEM RESET NON-COIN F.S.S. CHECK PROCEDURE F.S.S. Parts Break Down