EasyManua.ls Logo

Maxi MWHE20 - Machinery Misuse; Theory of Operation

Maxi MWHE20
82 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
IMPORTANT INFORMATION
1-5
3. A clean power supply free from voltage spikes and surges is absolutely essential for machines
equipped with the AC drive. Nonlinear inconsistencies (peaks and valleys) in the power can
cause the AC drive to generate nuisance errors. If voltage is above 230V for 200V installations
or above 440V for 400V installations, a buck / boost transformer is recommended. If voltage is
above 240V or 480V, a buck / boost transformer is required unless the factory advises
differently.
4. Sufficient space to perform service procedures and routine preventive maintenance is especially
important for machines equipped with AC drives.
1.9 MACHINERY MISUSE
Even though this machine is an atmospheric vessel, never use it for any purpose other than
washing fabrics.
1. Never wash petroleum – soaked rags in the machine. This could result in an explosion
2. Never wash machine parts or automotive parts in the machine. This could result in serious
damage to the basket.
3. Never stone wash in the machine. It could wear the basket and serious damage might occur to
the machine.
4. Never use the machine for dying and with harsh chemicals that can cause corrosion and other
health hazards.
5. Never allow children to play on or around this machine become trapped in the machine. Do not
leave children unattended while the machine door is open. These cautions apply to animals as
well.
1.10 THEORY OF OPERATION
The HARDMOUNT Series washer extractors use a single speed motor to drive the
cylinder via V belts in all speeds. The cylinder is supported by two spherical roller bearings
located in a bearing housing made of cast iron.
The motor is controlled by the computer control located in the front and the AC inverter
drive located in the rear panel. Any speed can be programmed for any wash cycle. Some speed
ranges are blocked out for programming due to safety reasons. These speed ranges are ones that the
machine cannot operate at due to its spring or suspension resonance. This speed range is not
important and normal speeds for wash or extraction are not within this range. Any wash speed in the
range of 3 – 50 RPM and extraction speeds 150 maximum RPM can be programmed. Further, any
reversing action can be programmed. Normal reversing action is 16 seconds forward, pause for 4
seconds, and 16 seconds reverse. Any temperature between 70 °F to 200 °F (20 95 °C) can be
programmed. Any water level in the range of the machine parameters can be programmed in
centimeters. The computers will automatically provide safety levels for steam injections and door
operations.
Water entry into the machine is through electromagnetic water valves controlled by the
computer. The computer also controls the drain, supply dispenser, any external liquid supplied,
steam injection and any other vital functions of the wash program. The computers can even record
cycles and data of importance that could be used for maintenance purpose.
The steam, if installed is injected in the bottom of the shell via a steam injector. The steam is
controlled by a steam valve that is programmed by the micro computer.
The cylinder is perforated, allowing water to pass through and drain from within during
drain and extract steps. Lifting ribs inside the cylinder lift the load from the wash solution and allow