Safety; Potentially Explosive Environments - Grundfos SL1 AUTOADAPT Serie Montage- Und Betriebsanleitung

6. Safety

Warning
The use of this product requires
experience with and knowledge of the
product.
Persons with reduced physical, sensory or
mental capabilities must not use this
product, unless they are under supervision
or have been instructed in the use of the
product by a person responsible for their
safety.
Children must not use or play with this
product.
Warning
Pump installation in pits must be carried
out by specially trained persons.
Work in or near pits must be carried out
according to local regulations.
Warning
It must be possible to lock the mains
switch in position 0. Type and
requirements as specified in EN 60204-1,
5.3.2.
Warning
When the pump has been installed, there
must be at least 3 m free cable above the
maximum liquid level.
Warning
Persons must not enter the installation
area when the atmosphere is explosive.
For safety reasons, all work in pits must be
supervised by a person outside the pump pit.
We recommend that you carry out all
Note
maintenance and service work when the
pump is placed outside the pit.
Pits for submersible sewage and wastewater pumps
contain sewage and wastewater with toxic and/or
disease-causing substances. Therefore, all persons
involved must wear appropriate personal protective
equipment and clothing and all work on and near the
pump must be carried out under strict observance of
the hygiene regulations in force.
Warning
Make sure that the lifting bracket is
tightened before attempting to lift the
pump. Tighten if necessary. Carelessness
during lifting or transportation may cause
injury to personnel or damage to the pump.

6.1 Potentially explosive environments

Use explosion-proof pumps for applications in
potentially explosive environments.
Warning
The explosion protection classification of
the pump is CE Ex II 2 G, Ex bcd IIB T4
Gb.
The classification of the installation site
must be approved by the local fire-fighting
authorities in each individual case.
Warning
The pumps must under no circumstances
pump combustible or flammable liquids.
Special conditions for safe use of SL1 and
SLV explosion-proof pumps:
1. Bolts used for replacement must be
class A2-70 or better according to EN/
ISO 3506-1.
2. The level of pumped liquid must be
controlled by two stop level switches
connected to the motor control circuit.
The minimum level depends on the
installation type and is specified in
these installation and operating
instructions.
3. Make sure the permanently attached
cable is suitably mechanically
protected and terminated in a suitable
terminal board placed outside the
potentially explosive area.
4. The thermal protection in the stator
windings has a nominal cut-out
temperature of 150 °C guaranteeing
the disconnection of the power supply;
the resetting of the supply is manual.
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