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.
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Страница 19: ...Section 1 Service and Maintenance ...
Страница 51: ...Section 2 Drive Assemblies ...
Страница 57: ...BMP920027 93251V Page 1 MOTOR MOUNT ASSEMBLY 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS DRIVE ASSEMBLIES ...
Страница 59: ...BMP950003 95107V Page 1 MOTOR MOUNT 30015 30020 S4A S4G S4J S4T ...
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Страница 69: ...Section 3 Bearing Assemblies ...
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Страница 76: ...BMP910034 95116V Page 1 MAIN BEARING ASSEMBLY 30015M6x ...
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Страница 83: ...Section 4 Shell and Door Assemblies ...
Страница 86: ...BMP920009 94491V Page 1 DOOR ASSEMBLY 30015 30020 RIGID MOUNT WASHER EXTRACTORS ...
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Страница 91: ...Section 5 Control and Sensing Devices ...
Страница 100: ...BMP920010 97281V Page 1 COIN ASSEMBLY INSTALLATION 240V 30015 30020 30022 COIN MACHINES ...
Страница 105: ...Section 6 Chemical Supply Devices ...
Страница 113: ...Section 7 Water and Steam Piping and Assemblies ...
Страница 114: ...ISOMETRIC SYMBOLS STANDARD SYMBOLS BMP920008 93027V Page 1 SCHEMATIC SYMBOLS KEY ...
Страница 115: ...BMP920015 96132V Page 1 WATER STEAM DRAIN SCHEMATICS 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...
Страница 132: ...BMP920021 93251V Page 1 STEAM INSTALLATION 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...
Страница 136: ...BMP920020 93251V Page 1 DRAIN VALVE INSTALLATION 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...
Страница 138: ...BMP920017 93251V Page 1 ELECTRIC DRAIN VALVE 30015 30020 30022 RIGID MOUNT WASHER EXTRACTORS ...
Страница 139: ...Section 8 Pneumatic Piping and Assemblies ...