en
Appendix
42
WILO SE 2017-12
13.2.3
Intended use
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 areas, which require
devices belonging to group II, category 2. The pumps can be used in both 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 areas, which require
devices belonging to the protection class “Explosion proof, Class 1, Division 1”. There-
fore, operation in areas with the required protection class “Explosion proof, Class 1, Di-
vision 2” is also possible.
13.2.4
Electrical connection
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. ±10 %.
Overview of monitoring devices:
P 13
P 17
Motor compartment
•
o
Motor winding: temperature limiter
(1-circuit temperature monitoring)
•
o
Motor winding: temperature controller
(2-circuit temperature monitoring)
o
•
Sealing chamber
o
o
Key: - = not available/possible, o = optional, • = as standard
All the monitoring devices fitted must always be connected!
13.2.4.1 Monitoring of motor compart-
ment
The connection is made as described in the “Electrical connection” section.
13.2.4.2 Monitoring of motor winding
DANGER
Risk of explosion due to overheating of the motor!
If the temperature limiter is connected incorrectly, there is a risk of explosion due to
overheating of the motor! Always connect the temperature limiter to a manual re-
activation lock. This means that a “release button” must be manually activated!
