Flowserve QLQ Vertical Worthington - Manual (Page 18)

QLQ, QLQC USER INSTRUCTIONS ENGLISH 87900027 – 06/14
Page 18 of 61
need to dismantle the thrust bearing, simplifying the
maintenance operations.
3.3.14 Rigid coupling between motor and pump
(if installed)
If the pump is not equipped with the thrust bearing, a
rigid coupling provides the torque and the axial load
transmission between pump and driver.
3.3.15 Accessories
Accessories (instrumentation, special flushing plans)
may be fitted when specified by the customer.
3.4 Performance and operating limits
This product has been selected to meet the
specifications of your purchase order, see section
1.5.
These pumps are furnished for a particular service
condition. Changes in the hydraulic system may
affect the pump's performance adversely. This is
especially true if the changes reduce the pressure at
the suction flange or if the liquid temperature is
increased. In case of doubt, contact the nearest
FLOWSERVE office.
3.4.1 Operating limits
Pumped liquid temperature
limits* -45 ºC (-50 ºF) to +205 ºC (400
ºF)
Maximum ambient
temperature* Up to +55 ºC (130 ºF)
Maximum pump speed refer to the nameplate
*Subject to written agreement from Flowserve.
Special designs and materials may be available for
pumps operating above and below these specified
limits. Contact Flowserve for upgrade options
available for your specific application.