Datex-Ohmeda Aestiva 7900 SmartVent, Service Manual

Page: 15 / 181

1/Introduction
1503-0151-000 5/26/0 1-3
1.2. Symbols
The following common symbols are used in Ohmeda manuals and on products,
however, no one product nor manual has every symbol listed. Refer to this list con-
cerning various symbols found.
ø
On (power)
N
Movement in one direction
O
OFF (power)
ˆ
Movement in two directions
o
Stand-by
z
Lock
q
Stand-by or prepa-
ratory state for a
part of the equip-
ment
Z
Unlock
p
ON only for part of
the equipment
134oC
Autoclavable
œ
“OFF” only for part
of the equipment
Í
non-autoclavable
†
Direct Current
m
Type B equipment
∏
Alternating Current
µ
Type BF equipment
x
Protective earth
ground
H
Type CF equipment
y
Earth ground
w
Warning or Caution, ISO 7000-0434
r
Frame or chassis
ground
wW
Attention, consult accompanying docu-
ments, IEC 601-1
å
Alarm silence but-
ton
π
Dangerous voltage
Y
Equipotential
≈
Input
t
Variability
Ù
Output
T
Variability in steps REF. Stock Number
Ê
This way up SN Serial Number