52
/
88
3. The characteristics of the refrigerant
1)
Refrigerant
mixed
working
quality,
some
flammable,
explosive
refrigerant
perfusion
spaces
should
be
ventilated,
once
the
leak,
not
in
the
vicinity
of
the
ignition
or
sparking.
Refrigeration
system
problems,
feedback
issues
point
by
the
local
aftermarket
judgment
and
guidance
of
the
local
after
‐
sales
maintenance,
depending
on
the
situation
by
the
Medical
Division
technical
staff.
2)
Refrigerant
code:
high
temperature
level
for
R134a
and
R404a;
Low
Temperature
the
HRA
(R290)
and
the
HRB
(R508b).
4.
Refrigerant perfusion process
Preparatory
work
1)
refrigerant
(R134A,
R404A,
HRA,
HRB)
2)
Hansen
valve
3)
standard
electron
(error
≤
±
3g)
4)
vacuum
pump
(
≥
4L)
5)
The
pressure
gauge
(requirements
can
be
read
at
the
same
time
a
high
‐
pressure,
low
pressure)
is
shown
in
Figure
1
Welded
open
system
1)
The
failure
of
the
system
from
the
end
of
the
process
tube,
pipe
clamp
cut
Summary of Contents for DW-86L288
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 ...
