53
/
88
open,
and
let
go
of
the
refrigerant
in
the
system.
2)
in
the
system,
the
opening
20
minutes,
the
open
pipe
with
a
pressure
gauge
welding
is
completed
【
Note
】
1)
This
model
is
a
two
refrigeration,
sub
‐
high
temperature
and
low
temperature
level,
two
separate
sets
of
system
maintenance,
do
not
avoid
two
systems
at
the
same
time
to
open,
must
understand
that
the
open
set
of
system
2)
the
maintenance
shop
humidity
can
not
be
too
large,
in
case
of
cloudy
rainy
weather,
prohibiting
the
opening
of
the
system,
should
immediately
open
system
machine
pipe
welding
completed
3)
because
of
the
machine
on
the
water
in
the
system
is
very
strict,
so
the
machine
pipe
openings
should
immediately
tape
each
pipe
junction
sealed
to
prevent
air
from
entering
the
system,
and
requires
the
completion
of
20
minutes
each
opening
pipeline
welding
Vacuum
1)
the
middle
of
the
vacuum
pump
connector
with
a
pressure
gauge
common
connector,
as
shown
in
Figure
2
2)
Turn
on
the
vacuum
pump,
vacuum
degree
≤
3Pa
taking
the
time
to
time
refer
to
the
attached
Note.
See
Figure
3
3)
When
the
requirements
of
the
degree
of
vacuum
is
reached,
the
first
stop
Summary of Contents for DW-86L338
Page 7: ...7 88 Product appearance DW 86L388 486 628 728 828...
Page 8: ...8 88 DW 86L288 DW 86L338 388A...
Page 9: ...9 88 DW 86L490 DW 86W100...
Page 10: ...10 88 DW 86W420...
Page 11: ...11 88 Dimensions DW 86W100...
Page 12: ...12 88 DW 86L490...
Page 29: ...29 88 product nameplate For example DW 86L338...
Page 55: ...55 88 PICTURE 2 PICTURE 3 PICTURE 4 U Unit Pa 3Pa...
