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Wilo Salmson France SAS 11-2016 V05 DIN A4
English APPENDIX
“Pressure-resistant encapsulation” protection
class
Motors in this protection type must be equipped
with a temperature limit (1-circuit temperature
monitoring).
Non-immersed operation
The motor
must be
immersed in an explosive
atmosphere!
Certification number
The certification number of the approval is locat
-
ed on the rating plate, in your order confirmation
as well as on the technical data sheet.
10.3.3. Electrical connection
ELECTROCUTION
hazard!
Incorrect electrical connections can cause
fatal electric shocks and/or explosion. Elec-
trical connections may only be carried out by
a qualified electrician approved by the local
energy supply company, in accordance with
locally applicable regulations.
In addition to the information in the “Electrical
connection” section, the following points must be
observed for Ex-rated pumps:
• The power supply cable must be connected
outside the potentially explosive area, or inside a
housing with ignition protection conforming to
DIN EN 60079-0!
•
Voltage tolerance: ±10 %
Units with a rated voltage of
380...415 V
have a
voltage tolerance of
max. ± 5 %
.
• All monitoring devices outside the “spark-proof
areas” must be connected via an ex-rated cut-off
relay.
Temperature monitoring device connection
The motor is equipped with a temperature limit
(1-circuit temperature monitoring).
The motor can be optionally equipped with a
temperature control and limit function (2-circuit
temperature monitoring).
RISK of fatal injury due to incorrect connec-
tion!
Risk of explosion due to overheating of the
motor! The temperature monitoring device
must be connected in such a way that, when
triggered, it can only be restarted after the
“release button” has been activated manually!
In 2-circuit temperature monitoring, automatic
restarting can be implemented via the tempera-
ture control. The maximum switching frequency
(15/h with a 3-minute pause) must be observed.
•
Bimetallic strips must be connected via an eval
-
uation relay. We recommend the “CM-MSS” relay
for this. The threshold is already pre-set.
Connection values: max. 250 V(AC), 2.5 A,
cos φ = 1
• PTC sensors (optionally available and in accord-
ance with DIN 44082) must be connected via an
evaluation relay. We recommend the “CM-MSS”
relay for this. The threshold is already pre-set.
When the threshold is reached, the pump must
switch off.
Motor compartment monitor
• The motor compartment monitor must be con-
nected via an evaluation relay. We recommend
the “NIV 101/A” relay for this. The threshold is
30 kOhm. When the threshold is reached, the
pump must switch off.
Connection of sealing chamber control
• The pencil electrode must be connected via an
evaluation relay. We recommend the “XR-41x”
relay for this. The threshold is 30 kOhm.
• The connection must be made using an intrinsi-
cally safe electric circuit!
Operation on the frequency converter
• Continuous operation up to rated frequency
(50 Hz or 60 Hz), observing the min. flow rate
• Consider additional measures with regard to
EMC (choice of frequency converter, using
filters, etc.).
• Never exceed the rated current or rated speed
of the motor.
• It must be possible to connect the motor’s own
temperature monitor (bimetallic strip or PTC
sensor).
10.3.4. Commissioning
RISK
of fatal injury due to explosion!
Pumps without Ex labelling may not be used
in potentially explosive areas! There is a risk
of fatal injury due to explosion! Observe the
following when using the pump in explosion
hazard areas:
• The pump must be approved for use in poten-
tially explosive areas!
• The power supply cable must be connected
outside the potentially explosive area, or
inside a housing with ignition protection con-
forming to DIN EN 60079-0!
• Switchgears must be installed outside the
potentially explosive area, or inside a hous-
ing with ignition protection conforming to
DIN EN 60079-0! Furthermore, these must
be configured for operation of pumps with
explosion approval.
• The mounted accessories must be approved
for use on Ex pumps.
RISK
of fatal injury due to explosion!
The housing of the hydraulics must be fully
flooded (completely filled with the fluid) dur
-
ing operation. If the housing is not immersed
or there is air in the hydraulics, flying sparks
may cause an explosion, for example due to
static charge! Ensure that dry-running pro
-
tection is in place for switching off.
