Speck pumpen V 430 - 7.1.4 Additional required MCR-equipment for compressors with double-action slide ring gasket; Additional required MCR-equipment for compressors with magnet coupling

Speck Pumpen Vakuumtechnik GmbH
zertifiziert: DIN EN ISO 9001
Supplementary Operating Instructions for Explosion Protection
9
7.1.4 Additional required MCR-equipment for compressors with double-action slide ring gasket
LS- 07 Liquid level switch for clearance
to start in each collecting tank of
the slide ring gaskets
FS- 08 Flow rate switch in the flushing
pipes of the slide ring gaskets
TS+ 09 Temperature switch in the
refeeding of the flushing liquid
After the clearance to start by LS- 07 a
suitable time lag for the activation of the flow
rate switch FS- 08 must be determined. The
time lag depends on the gasket size and the
viscosity of the sealing liquid. It is between 5 s
and 90 s. (see data sheet).
LS-
07
FS-
08
TS+
09
FS-
08
TS+
09
LS-
07
Fig. 7.2. MCR for double
-
action slide ring gasket
Additional required MCR-equipment for compressors with magnet coupling
TS+ 10 Temperature switch at the separating can of the compressor
TS+
10
Fig. 7.3. MCR at the liquid-ring compressor with magnet coupling
The temperature at the separating can must be at least 20 U less than the maximum allowed temperature
of the operating liquid.
Liquid-ring compressors with magnet coupling are always to be operated with a soft start!