English (GB)
11
7. Installing the product
Fig. 2
Positioning the pump
7.1 Pump with single seal
7.1.1 Non-flammable liquids
Category 2G/D/M2
Make sure that the pump is filled with pumped liquid
during operation. If this is not possible, ensure
appropriate monitoring, for example dry-running
protection to stop the pump in case of malfunction.
Category 3G/D
No additional monitoring, for example dry-running
protection, is required for the pump system.
7.1.2 Flammable liquids, pump unit
Category 2G/D/M2 and 3G/D/M2
Make sure that the pump is filled with pumped liquid
during operation. If this is not possible, ensure
appropriate monitoring, for example dry-running
protection to stop the pump in case of malfunction.
Ensure sufficient ventilation around the pump.
The leakage rate of a shaft seal is 1-10 ml for each
24 hours of operation. For some types of liquids, the
leakage will not be visible due to evaporation. During
the run-in period, larger leakage of 1-20 ml per 24
hours of operation can occur. Liquids like oil or
glycol-water mixtures evaporate slower than water
and will leave residuals. Ensure proper ventilation to
maintain the zone classification.
Category M2
Protect the pump with a guard to prevent damage
from falling or ejected objects.
7.2 Pump with MAGdrive
See the CRN MAGdrive installation and operating
instructions at http://net.grundfos.com/qr/i/
96464310.
DANGER
Explosion risk
Death or serious personal injury
- Do not let the pump run dry.
- Make sure that the pump is filled with
pumped liquid during operation.
DANGER
Explosion risk
Death or serious personal injury
- Replace the shaft seal if increased
leakage is observed.
DANGER
Explosion risk
Death or serious personal injury
- Always install the pump with the motor
above the pump to avoid overheating of
the motor bearings. See fig.
.
The responsibility for checking the
functions of the dry-running protection,
such as flow rate, sealing pressure and
temperature of the barrier or flushing
liquid, rests with the installer or owner.
TM
01
12
41
41
02
DANGER
Explosion risk
Death or serious personal injury
- Always fill the pump with liquid and
ensure that the required minimum flow
rate is obtained.
