Speck pumpen V 430 - 4 Identification; 5 Permissible operating modes

Speck Pumpen Vakuumtechnik GmbH
zertifiziert: DIN EN ISO 9001
Supplementary Operating Instructions for Explosion Protection
4
For dust explosion protection the surface temperature has to be lower than 2/3 of the ignition temperature
in °C of the dust-air-mixture and 75 K below the glow temperature of a dust coat of 5 mm thickness.
4 Identification
The identification of the compressor with the label and the corresponding classification applies only
to the liquid-ring compressor.
Example: II 1G IIB T4 for explosive gas
Example: II 1D T 120° for explosive dusts with a maximum admissible surface
temperature of 120°C
All external equipment and components (coupling, motor, etc.) must at least satisfy the classifications
specified by the manufacturer of the compressor, be suitable for the respective zone and exhibit an
appropriate authorization and identification of the manufacturer of the respective equipment. This is
ensured with acquisition of the complete compressor with drive and control systems.
5 Permissible operating modes
Overflow
Fresh liquid
Inert gas
Anti-cavitation
protection
LS-
02
LS-
01
LS-
03
SO+
00

TS+
05
PS+
06
FS-
04
GO
11
GO
12
UV
13
UV
14
FS-
14
The inert gas flushing is only necessary for
gases and vapors, which contain hydrogen
Overflow
Fresh liquid
Coolant
Inert gas
Anti-cavitation
protection
LS-
02
LS-
01
LS-
03
SO+
00

TS+
05
PS+
06
FS-
04
GO
11
GO
12
UV
13
UV
14
FS-
14
The inert gas flushing is only necessary for
gases and vapors, which contain hydrogen
Fig. 5.1. open circuit cooling Fig. 5.2. closed circuit cooling