B&C Technologies HI Series Commercial - Manual (Page 13)

Installation
Theory of Operation
13
The B&C HI model uses 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 split
pillow block housings made of cast steel.
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 the ones that the
machine cannot operate at due to
resonance. This speed range is not
important and normally speeds for wash or
extraction are not selected within this range.
Any wash speed in the range of 10-50 RPM
and extraction speeds 150-560 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 70F to 200F (20-95C)
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 supplies, steam injection and any
other vital functions of the wash program.
The computer 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 EL6.
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 the load to tumble and
falling back into the solution when the load
reaches the approximate 10-11 o’clock or 1-
2 o’clock positions. This mechanical action
removes soil from the fabric. Furthermore,
the lifters are perforated on the top so that
water can cascade over the goods and wet
them quickly. This reduces water
consumption as water is picked up at the
cylinder’s lowest point and lifted and
splashed over the goods at the highest point
as the cylinder rotates.
A stainless steel door is provided for loading
and unloading. A door lock system
prevents operation of the machine when the
door is open. The door is locked during
operation utilizing a solenoid and a
manual latch for safety reasons. The door
lock is provided with magnetic sensor to
indicate that the machine is locked and
provide for start of the machine when the
door is closed and locked.
The AC drive, brake unit, contactor, circuit
overload protectors, input power supply
connections, external supply connections,
and control transformer are behind a cover
of the rear/side of the machine.
The supply dispenser is mounted on the left
side of the machine and is accessed by