VERDER Jec JRZL Series, Manual

Page: 38 / 40

13
The maximum surface temperature has to be controlled weekly. If the values listed below are
exceeded, the pump has to be set out of action at once.
Admissible Temperatures
Class Temperature
T1 450°C
T2 300°C
T3 200°C
T4 135°C
T5 100°C
T6 85°C
Admissible temperatures for transported liquid and pump
surface, depending on the ATEX temperature class.
Maintenance and Service
To reduce the occurrence of problems with the pump, the preventive maintenance
schedule must be followed, otherwise a safe operation in a hazardous location is
not guaranteed.
This is particularly important for wearing parts like mechanical seals, O-rings and
bearings. A regular visual inspection of static seals is mandatory.
Personnel should be sufficiently qualified and thoroughly familiar with the operation
of the pump, before starting any maintenance procedure. The same holds for
inspection and cleaning in the case of a possible dismantling and reassembling of
the pump. During this kind of work, an explosive atmosphere should not be
present.
Inspection and Maintenance Intervals:
Daily:
Visual leakage control
Monthly / after 720 hours:
Leakage, operation, vibration and heat check
Yearly:
O-rings and mechanical seal has to be replaced along with pump inspection.
Genuine replacement parts are required and please refer operational manual.