4
About this manual
Piktograph
definitions
Instructions in the
text
Î
Work instruction: here you have to do something.
Abbreviations used
DCU:
Display and operating unit
HPU:
Handheld programming unit
TC:
Electronic drive unit for turbopump
TPS:
Power supply
Symbols used
The following symbels are used consistently throughout the diagrams:
High vacuum flange
Fore-vacuum flange
Venting connection
Cooling water connection
Air cooling
Electric connection
Sealing gas connection
Prohibition of an action or activity in connection with a
source of danger, the disregarding of which may result in
serious accidents.
Warning of a displayed source of danger in connection
with operation of the unit or equipment.
Command to perform an action or task associated with a
source of danger, the disregarding of which may result in
serious accidents.
H
VV
F
G
