Ex Rating - Wilo FKT 50.1 Series Installation And Operating Instructions Manual

en
13.3

Ex rating

13.3.1 Identification of Ex-rated pumps
13.3.2 Protection class
13.3.3 Intended use
13.3.4 Electrical connection
212
Appendix
This section contains further information on the operation of the pump in an explosive
atmosphere. All personnel must read this section. This section applies only to Ex-rated
pumps!
For use in explosive atmospheres, the pump must be marked as follows on the rating
plate:
▪ "Ex" symbol of the corresponding approval
▪ Ex classification
▪ Certification number (depending on the approval)
The certification number, if required by the approval, is printed on the rating plate.
The motor's design version corresponds to the following protection classes:
▪ Flameproof enclosure (ATEX)
▪ Explosionproof (FM)
In order to limit the surface temperature, the motor must be equipped with at least one
temperature limiter (1-circuit temperature monitoring). It may also be equipped with a
temperature controller (2-circuit temperature monitoring).
DANGER
Explosion due to pumping of explosive fluids!
Pumping of highly flammable and explosive fluids (gasoline, kerosene, etc.) in pure
form is strictly prohibited. There is a risk of fatal injury due to explosion! The pumps
are not designed for these fluids.
ATEX approval
The pumps are suitable for operation in potentially explosive atmospheres:
▪ Device group: II
▪ Category: 2, zone 1 and zone 2
These pumps must not be used in zone 0!
FM approval
The pumps are suitable for operation in potentially explosive atmospheres:
▪ Protection class: Explosionproof
▪ Category: Class I, Division 1
Notice: If the cabling is carried out according to Division 1, installation in Class I, Divi-
sion 2 is also permitted.
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
▪ Always connect the pump to an electrical outlet outside the explosive area. If the con-
nection must be made within the explosive area, then the connection must be carried
out in an Ex-rated housing (ignition protection class according to DIN EN 60079-0)!
Non-observance may lead to fatal injury due to explosion! Connection must always be
carried out by a qualified electrician.
▪ All monitoring devices outside the "spark-proof areas" must be connected via an in-
trinsically safe circuit (e.g. Ex-i relay XR-4...).
▪ The voltage tolerance may not be higher than max. ±5 %.
Overview of possible monitoring devices:
Internal monitoring devices
FKT 50.1 FKT 57 FKT 63.1 FKT 63.2
WILO SE 2019-01