Connecting The Drain Hose - Miele PG 8080U Operating Instructions Manual

Plumbing

Connecting the drain hose

– The drainage system of the
commercial dishwasher is equipped
with a non-return valve, which
prevents dirty water from flowing
back into the commercial dishwasher
via the drain hose.
– The commercial dishwasher drainage
hose should be connected to a
separate drain for the dishwasher
only. If no separate drain is available,
we recommend connecting it to a
dual-chamber siphon.
– The commercial dishwasher is
equipped with a 1.5 m ( 59") flexible
drain hose with an internal diameter
of 22 mm (7/8").
Hose clips are supplied with the
commercial dishwasher.
– The drain hose must not be
shortened. The hose can be
extended using a connection piece to
attach a further length of hose. The
drainage length must not be longer
than 4 m and the delivery head no
higher than 1 m.
– The drainage system must be able to
accommodate a minimum drainage
flow of 16 l/min.

Make sure that there are no kinks
in the hose, and that it is not
squashed or stretched.
68
Venting the drainage system
The drainage system must be vented if
the on-site connection is situated lower
than the guide path for the lower basket
rollers in the door. Otherwise a
siphoning effect during a program can
cause the commercial dishwasher to
empty itself of water.
To vent it:
 Open the commercial dishwasher
door fully.
 Pull the lower spray arm firmly
upwards to remove it.
 Cut off the cover of the vent valve in
the wash cabinet.