k%
­
a.
MEETING
SUMMARY
DATE
:
December
17,
1992
E
L
PLACE:
Radian
'
Corporation
1st
Floor
Large
Conference
Room
Research
Triangle
Park,
North
Carolina
SUBJECT:

ATTENDEES:
Maria
Amigo,
Radian
Corporation
Kim
Kepford,
Radian
Corporation
Susan
Miller,
Radian
Corporation
Tom
McKinney,
Radian
Corporation
y
of
Meeting
on
Solvent
Mileage
orris,
Radian
Corporation
er,
U.
S.
Environmental
Protection
Agency
Street
and
Company
INTRODUCTION
This
meeting
was
originally
scheduled
with
the
International
Fabricare
Institute
(
IFI)
to
clarify
some
issues
on
potential
dry
cleaning
machine
configurations.
The
representatives
from
IF1
could
not
attend
the
meeting
and
Mr.
Manfred
Wentz
of
RR
Street
and
Company
(
an
expert
on
the
dry
cleaning
industry
and
former
head
of
IF13
was
the
only
industry
representative
to
attend
the
meeting.
The
questions
the
EPA
asked
Mr.
Wentz
arose
as
a
result
of
earlier
discussions
with
the
California
Air
Resources
Board
(
CARB)
about
their
1992
survey
of
dry
cleaners.
Specifically,
the
purpose
of
the
meeting
was
to
clarify
the
different
types
af
control
device
configurations
that
might
be
operating
in
the
field,
and
how
dry
cleaners'with
these
configurations
may
have
responded
to
questions
on
the
CARB
survey.
interest
was
how
a
typical
dry
cleaner
would
respond
to
questions
on
the
type
of
machine
or
control
device
being
used
and
the
solvent
mileage
achieved
with
a
given
combination.
Meetinu
Summarv
describe
the
difference
between
typical
configurations
for
vented
and
no­
vent
dry
cleaning
machines.
Mr.
Wentz
began
his
description
with
a
typical
vented
dry­
to­
dry
machine
operating
Of
particular
The
meeting
began
with
Mr.
Fred
Porter
asking
Mr.
Wentz
to
.
with
a
carbon
adsorber,
and
then
with
a
typical
vented
dry­
to­
dry
machine
operating
with
a
refrigerated
condenser.
Mr.
Wentz
indicated
that
a
dry­
to­
dry
machine
vents
after
the
drying
cycle
is
completed.

aerated
by
drawing
fresh
room
air
into
the
drum,
over
the
tumbling
cl
en
into
a
carbon
adsorber.
The
air
then
passes
over
the
carbon
bed
and
is
exhausted
either
out
into
the
room
or
outside
the
building.
If
the
vented
dry­
to­
dry
machine
uses
a
refrigerated
condenser,
after
drying
is
completed
the
machine
has
a
lgcool
drySS
cycle,
where
air
from
the
drum
is
recirculated
over
the
tumbling
clothes,
passed
through
a
refrigerated
condenser,
and
returned
to
the
drum.
Mr.
Porter
asked
Mr.
Wentz
for
his
description
of
the
configuration
of
a
dry­
to­
dry
vented
machine
with
a
refrigerated
condenser.
Mr.
Wentz
indicated
that
it
would
mean
replacing
the
water
coils
with
refrigerant
coils,
and
that
after
drying,
the
air
would
pass
over
these
coils
to
remove
solvent.
Mr.
Porter
asked
what
the
temperature
of
the
exhaust
would
be
from
this
type
380
to
40
°
F
when
exhausting
(
at
the
end
of
the
fScool
dry"
If
the
machine
uses
a
carbon
adsorber
for
a
ce,
once
drying
is
completed,
the
clothing
are
I
'
of
machine.
Mr.
Wentz
indicated
that
it
could
be
approximately
cycle).
Mr.
Porter
asked
Mr.
Wentz
what
steps
are
needed
to
begin
the
aeration
cycle.
Mr.
Wentz
indicated
that
for
old
machines,
the
dry
cleaner
had
to
open
the
machine
door
to
begin
aeration.

machine
at
the
end
of
the
dry
cleaning
process
(
open
door
cycle)
passed
through
the
refrigerated
condenser.
Mr.
Wentz
indicated
that
it
did
not
pass
through
the
condenser;
normally
a
damper
prevents
room
air
from
passing
over
the
condenser
coils
(
which
are
frozen
at
this
time
in
the
cycle).
Mr.
Porter
then
questioned
Mr.
Wentz
about
machines
that
use
carbon
adsorbers.
He
asked
if
the
water­
coils
used
to
recover
perchloroethylene
during
the
drying
cycle
are
present
in
machines
using
carbon
adsorbers.
Mr.
Wentz
indicated
that
they
were
present.
Mr.
Porter
asked
Mr.
Wentz
if
the
air
drawn
into
a
vented
gep.
006
2
Mr.
Porter
asked
Mr.
Wentz
how
machines
with
and
without
carbon
adsorbers
entered
their
aeration
cycles.
Mr.
Wentz
indicated
that
machines
with
carbon
adsorbers
automatically
enter
their
aeration
cycle
(
based
on
a
preset
time
or
program).
Machines
w
hout
control
devices
must
be
manually
entered,
by
opening
the
machine
door,
which
switches
on
a
fan.
Mr.
Wentz
ed
that
there
are
two
ways
in
which
air
could
enter
a
dry
cleaning
machine
for
aeration:
(
1)
by
opening
a
damper,
or
g
the
machine
door.
The
next
topic
the
meeting
was
no­
vent
machines.
Mr.
Porter
asked
Mr.
Wentz.
how
the
owner
or
operator
knows
that
the
drying
cycle
is
completed
(
clothes
are
dry)
in
a
no­
vent
machine.
Mr,
Wentz
indicated
that
machines
3
years
or
older
are
programmed
on
timers,
and
that
these
timers
can
be
reprogrammed
according
to
load
type
(
fabric,
load
weight,
etc.)
He
also
indicated
that
most
loads
are
not
fully
dry
when
this
timer
indicates
that
drying
is
finished,
and
that
most
dry
cleaners
know
this.
older
have
a
manual
override
for
this
timer.

in
solvent
mileage
for
no­
vent
machines
with
refrigerated
condensers
and
vented
machines
with
a
refrigerated
condensers.
Mr.
Wentz
indicated
that
if
all
other
operating
parameters
were
the
same,
solvent
mileage
should
not
be
different.
He
stated
that
many
machines
that
are
7
years
or
M
r
.
Porter
asked
Mr,
Wentz
if
he
would
expect
a
difference
gep.
006
3
