Operating instructions – Xylem WTS User Manual
Page 10
Operating instructions
WTS 102/3-en
8
2.2 Permissible Temperatures
The values stated in the Confirmation of Order always apply. It is not permitted to exceed or go
below these values. If no temperature is given in the Confirmation of Order the maximum
permissible pumping medium temperature is 95° C.
2.3 Bearings and Lubrication
The roller bearing situated above the shaft takes up the axial forces and radial forces which occur
near the coupling. It is filled with grease for its life cycle and thus requires no maintenance.
Depending on the installation length the pump has 1 (at an installation length of 1,900 mm or less)
or 2 (at an installation length of more than 1,900 mm) slide bearings for guiding the shaft into the
shaft area.
Design with Medium Lubricated Slide Bearings
•
The pumping medium may not contain any abrasive elements.
•
Make sure that all slide bearings are flooded when the pump is switched on (at installation
lengths of more than 1,900 mm also the upper rod bearing).
•
Otherwise no maintenance required.
Design with Pure Water Lubricated Slide Bearings
•
During pump operations pure water must be fed to the slide bearings. If pumping media tend to
conglutinate or leave deposits it may be necessary to leave the pure water supply switched on
even when the pump is at a standstill.
•
On the upper surface of the base plate, a pure water connection with an R 1/4“ internal screw
thread is provided for every sliding bearing.
•
Water consumption of approx. 1,5 litre/min at a pressure of 3 bar is to be expected per sliding
bearing.
Design with Grease Lubricated Slide Bearings
•
On the upper surface of the base plate a connection with an internal screw thread R 1/4“ is
provided. 3 to 5 grammes of grease per day are required per bearing. We recommend grease with
a consistency of NLGI grade 2. Always use grease with the same base.
•
The lubricating pipes are delivered filled with lithium soap grease.
The grease consumed enters the pumping medium. Take care that it does not pose
an environmental hazard.
2.4 Drive and Control
Driven by four or six pole vertical three phase induction motors.
Manual Switching
If no automatic control is provided the pump must be switched on and off by hand.
Please
note