Ex Certification And Classification; Safety; General Safety Instructions; Explosion-Proof Versions - Grundfos SRP Installation And Operating Instructions Manual

3.3 Ex certification and classification

SRP pumps designed for application in potentially explosive
environments (Ex versions) are supplied with a nameplate with
certification details.
Figure 3 shows the nameplate of an explosion-proof SRP pump.
1 2 3 4
SEV 06ATEX 0110 X
Type
22
P.c. ø
21 T
Model Pol
20
P /P kW I
19
1 2 N
Cos.
18
Ex
II 2G
1258 See MANUAL!
17 16 15 14
Nameplate of Ex version
Fig. 3
Pos. Description
1 Type designation
2 Production code
3 Impeller diameter
4 Liquid temperature range
5 Product number
6 Enclosure class according to IEC
7 Serial number
8 Insulation class
9 Rated voltage
10 Rated speed (impeller)
11 Weight
12 Nominal response temperature (NRT)
13 Starting current
14 Frequency
15 Number of poles
16 Rated current
17 ATEX category
18 ATEX approval class
19 Power factor
20 Motor power P /P
1 2
21 Model
22 Maximum installation depth
Key to certification details
Ex Motor explosion-proof according to European standard
e For increased safety according to EN 60079-7
c Constructional safety according to EN 13463-5
k Liquid immersion according to EN 13463-8
ib Intrinsically safe according to EN 60079-7
Designed for application in potentially explosive
II
environments, except for mines
T2 Maximum surface temperature of the motor is 300 °C
T3 Maximum surface temperature of the motor is 200 °C
T4 Maximum surface temperature of the motor is 135 °C
5 6 7
96257016
Prod. No.
mm No.
8
°C IP Insul. class:
9
V
Hz
10
A I A n /min
Start N
Weight kg
11
NAT130°C
CH-6105 Schachen
13 12
Key to certification details for ALR-20/A Ex, II (2) G [Ex ib] IIC
II Non-mining equipment group
Device placed in non-hazardous area (associated
(2)
electrical apparatus according to EN 60079-11)
G For gas atmosphere
Intrinsically safe circuits which can be connected to
[Ex ib]
category 2 equipment
IIC Gas group IIC (hydrogen)

4. Safety

4.1 General safety instructions

Warning
Before starting work on the product, make sure
that the fuses have been removed or the mains
switch has been switched off. Make sure that the
power supply cannot be accidentally switched
on.
Warning
These safety instructions as well as the
instructions in each individual section must be
followed when transporting, storing, handling
and operating the pump.
The pump must be installed, connected, started
up and serviced by qualified persons.
Beware of rotating parts.
Make sure that persons cannot accidentally fall
into the tank, e.g. by installing a cover or railing.

4.2 Explosion-proof versions

Warning
When using explosion-proof pumps, the
following safety regulations must also be
observed.
Equipotential bonding
Explosion-proof SRP pumps must be earthed by means of a
copper cable of min. 4 mm² via the equipotential bonding terminals
on the back of the motors.
The cable must be fixed in such a way that it cannot be caught in
the impeller during operation.
Leak sensor
Together with the Grundfos relay, type ALR-20/A Ex, the leak
sensor forms the basis of the Ex approval. The relay must
therefore always be installed together with explosion-proof SRP
pumps. The relay must be ordered separately.
Product number: 96489569.
As the leak sensor is intrinsically safe, it must be connected via
the blue conductors.
Temperature monitoring
The motor temperature must always be monitored via the built-in
PTC sensors. The associated relay must be certified for this use.
Supply cable
The factory-fitted supply cable must not be shortened.
Frequency converter
The pump is designed for frequency converter operation in the
30 to 50 Hz range. Danfoss frequency converters, type FC300,
can be used. For further information about size and parameter
settings, contact Grundfos.
Frequency converters may only be used if the Ex classification of
these are higher then for the recirculation pumps, and if they are
installed in accordance with the Ex regulations.
Accessories
SRP pumps must only be used together with accessories
supplied and approved by Grundfos.
9