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Safety chapter
Namur sensor (Specified for EX zones)
Specification
Nominal voltage *
Power consumption - active surface uncovered
Power consumption - active surface covered
Rated switching distance
Cable colour
blue
brown
Check the temperature of the gear
Inspection, daily
2.7.5 ATEX features
Maintenance
Interval
After 18,000 operating hours or 23,500 oper‐
ating hours (API)
18
Electrically wire an additional potential equalisation cable from this system
of potential equalisation lines cleanly and permanently to an electrically
clean potential equalisation point, e.g. to a potential equalisation bar on
site.
5–25 V DC, in accordance with Namur or DIN 60947-5-6, potential-free
design.
* Ri ~ 1 kΩ
Install the sensor in accordance with the chapter "Installation, electrical".
Refer to its documentation.
Sensor name: NJ1.5-8GM-N.
Measure the surface temperature at maximum load. Additional information
– refer to the operating instructions for the gear.
Check the pump installation for:
leaks
n
Abnormal noises or squeaks
n
abnormal temperatures
n
abnormal odours
n
abnormal vibrations
n
other anomalies
n
WARNING!
Stop the pump immediately in the event of any anoma‐
lies when inspecting the pump and rectify them immedi‐
ately. ProMinent Service may be needed if required.
Maintenance work
Adhere to the motor manufacturer's recommendations - see oper‐
ating instructions for the motor.
After 40,000 h: All pump bearings must be replaced for ongoing
ATEX use.
Value
8 V DC
> 3 mA
< 1 mA
1.5 mm
Polarity
-
+
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