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Cleaning programmes for industrial
applications can consist of several process
stages. For example, a batch of metal and
glass substrates can be processed using
an alkaline wash, an acid neutralising
cycle, a rinse, a final rinse and a drying
cycle.
To start a cycle, the Miele professional
cleaning machine first has to be filled with
either fresh water or water from a special
water recycling unit. During the cycle, the
water is circulated throughout the cabinet by
means of rotating spray arms. Chemicals
e.g. cleaning agents, neutralising agents
and anti-corrosion agents are dispensed,
depending on the programme.
The water may be heated up, depending
on the programme. At the end of a cycle,
the water will be pumped out of the
machine into the drainage system, or into
a suitable recovery system for recycled
water.
All Miele professional cleaning machines
either come with a double drain hose as
standard (IR 6002), or they can be fitted
with one as an optional extra (G 7823/
G 7824, G 7825/G 7826, PG 8527/PG 8528).
The two-part drainage system means that
the operator can decide whether the used
water is drained away or directed into a
suitable water recycling unit or disposal
unit.
The IR 6002 has an additional pump fitted
as standard which draws the processed
water back out of the reservoir into the
machine. This pump needs to be fitted
to the G 7823 – PG 8528 models as an
optional accessory if required.
By using the appropriate accessories,
the processes described below (e.g. B
and C) can be combined. The system
can also be used entirely on recirculation
mode (recirculating chemicals and water),
avoiding the need for any drainage.
The diagrams illustrate the differences
between the three types of water
processing:
Process A (fresh water process)
• Fresh water intake for every phase
• Cleaning agent concentration 0.3–1%
Advantage: higher and more uniform
standard of cleaning
Process B (cascade process)
• Rinse water is recovered
• Cleaning agent concentration 0.3–1%
Advantage: reduces the total water
consumption by 30–60%
Process C (recirculation process)
• Cleaning water is recovered
• Cleaning agent concentration 5–30%
Advantage: reduces the overall
consumption of cleaning agents
All Miele professional cleaning machines work very individually
and economically, thanks to a two-part drainage system and
water recovery system.
Individual cleaning programmes and water recovery
