Safety Instructions; General Safety Instructions; Explosion-Proof Versions - Grundfos SMD Installation And Operating Instructions Manual

3. Safety instructions

3.1 General safety instructions

DANGER
Electric shock
Death or serious personal injury
‐
Before working on mixers or flowmak-
ers, make sure that the fuses are re-
moved or the main switch is switched
off. Make sure that the power supply
cannot be switched on unintentionally.
WARNING
Minor or moderate personal injury
‐
Wear the appropriate safety shoes,
gloves, googles and other protective
equipment when handling the product.
Follow these instructions when transport-
ing, storing, handling, operating or disman-
tling the mixer or flowmaker.
The mixer or flowmaker must be installed,
connected, started up and serviced by
qualified persons.
Make sure that persons cannot fall into the
tank.
WARNING
Electric shock
Death or serious personal injury
‐
The power cable must be fixed in such
a way, that it cannot get in contact with
the propeller during operation.

3.2 Explosion-proof versions

The Ex instructions must be followed for the
explosion-proof SMD. We recommend that you also
follow these instructions for non-explosion proof
mixers and flowmakers.
When using explosion-proof mixers, ob-
serve the following safety regulations.
Ex marking of the SMD Ex mixers: Ex db h IIB T4 Gb.
Ex marking of the SMD Ex mixer variant with leakage
sensor: Ex db h ib IIB T4 Gb. For more information on
leakage sensors, see 6.4 Gearbox or shaft seal
housing protection.
Temperature monitoring
The motor temperature must always be monitored
through the built-in PTC or PTO (Klixon) sensors. The
associated relay must be certified for this use with the
safety level, SIL 1. If the relay is built in as part of a
frequency converter, the converter must also fulfil SIL
1.
12
Power cable
The factory-fitted power cable must not be shortened.
DANGER
Explosive environment
Death or serious personal injury
‐
Do not dismantle mixers and flowmak-
ers in an explosive atmosphere.
Soft starter and frequency converter
Use soft starters and frequency converters only if
their Ex classification is higher than the one applying
to the mixer, and they are installed in accordance with
the Ex regulations.
Accessories
Use only Grundfos-approved accessories.
Maintenance, service and repair
Only Grundfos or authorised service workshops are
allowed to dismantle mixers. This applies to the cable
entry as well.
For repair purposes, use only Grundfos-produced
components.
For inspection and maintenance, the standard EN
60079-17 must be complied with.
Service log
Spare parts must be registered in a service log to
have a 100 % traceability during the product lifecycle.