MSFD0703AE/9328AV (1 of 1)
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DESCRIPTION OF SINGLE MOTOR DRIVE TRAIN
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Cylinder Speeds
Machines covered by this section have two cylinder speeds. Slowest to fastest, these are wash speed, and
extract speed.
Wash speed occurs during washing and rinsing bath steps. The cylinder reverses direction approximately twice
per minute as explained in “How the Machine Reverses” in this section. For efficient extraction, distribution of
goods occurs during the last thirty seconds of each wash and rinse step.
Extract speed is used to extract the maximum possible moisture from the goods before the formula ends.
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Drive Train Components and Operating Sequences
A microprocessor timer controller directs the machine through the required steps for each program. Control-
lers are fully described elsewhere. Major drive train components include one motor with two windings to generate
two speeds, a v-belt and a pulley.
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How the Machine Reverses
The wash/extract motor periodically stops and reverses direction during washing and rinsing. Machines are
equipped with three-phase motors. Two relays (CRWAC and CRWAA) operate to change the cylinder direction.
These relays are actuated so that only one operates at a time. CRWAC causes clockwise rotation, CRWAA causes
counterclockwise rotation. Rotation is selected by exchanging two of three phased leads to the low speed motor
winding. Relays CRWAC and CRWAA automatically swap leads through a switching process, thus changing rota-
tional direction. There is a brief dwell period (generally less than three seconds) during each change of direction.
The cylinder is stationary during this time.
Summary of Contents for 30015
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Page 19: ...Section 1 Service and Maintenance ...
Page 51: ...Section 2 Drive Assemblies ...
Page 59: ...BMP950003 95107V Page 1 MOTOR MOUNT 30015 30020 S4A S4G S4J S4T ...
Page 68: ......
Page 69: ...Section 3 Bearing Assemblies ...
Page 72: ...BMP910032 96141V Page 1 MAIN BEARING ASSEMBLY 30015C4x M4x K5x S5x ...
Page 74: ...BMP910033 96141V Page 1 MAIN BEARING ASSEMBLY ...
Page 76: ...BMP910034 95116V Page 1 MAIN BEARING ASSEMBLY 30015M6x ...
Page 80: ...BMP910035 93251V Page 1 JACKSHAFT ASSEMBLY 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...
Page 82: ......
Page 83: ...Section 4 Shell and Door Assemblies ...
Page 86: ...BMP920009 94491V Page 1 DOOR ASSEMBLY 30015 30020 RIGID MOUNT WASHER EXTRACTORS ...
Page 90: ......
Page 91: ...Section 5 Control and Sensing Devices ...
Page 100: ...BMP920010 97281V Page 1 COIN ASSEMBLY INSTALLATION 240V 30015 30020 30022 COIN MACHINES ...
Page 105: ...Section 6 Chemical Supply Devices ...
Page 113: ...Section 7 Water and Steam Piping and Assemblies ...
Page 114: ...ISOMETRIC SYMBOLS STANDARD SYMBOLS BMP920008 93027V Page 1 SCHEMATIC SYMBOLS KEY ...
Page 132: ...BMP920021 93251V Page 1 STEAM INSTALLATION 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...
Page 138: ...BMP920017 93251V Page 1 ELECTRIC DRAIN VALVE 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...