Circor HOUTTUIN 216 Series, Оригинальное руководство по установке, эксплуатации и обслуживанию

Страница: 54 / 84

Product Description
52
216 Series Twin-Screw Pump -
Installation, Operation & Maintenance Manual
normal operation. A sudden increase in temperature indicates that a bearing
problem is developing, and a check of the bearing should be made.
When bearing temperature monitoring is utilized the bearing temperature
alarm/shutdown settings should be set to the values stated in the Lubricating
oil requirements section.
NOTICE:
Never throttle the pump flow from either the discharge or suction side. This action can result in
decreased performance, unexpected heat generation, and equipment damage.
Risk of equipment damage from unexpected heat generation. Do not overload the driver.
Ensure that the pump operating conditions are suitable for the driver. The driver can overload
in these circumstances:
The viscosity of the fluid is greater than expected
The pumped fluid discharge pressure exceeds the pump rated pressure.
Check the bearing temperatures using a temperature-measuring device. Monitor the bearing
temperature frequently during initial operation in order to determine if a bearing problem
exists, as well as to establish normal bearing operating temperature.
For pumps with auxiliary piping, make sure that proper flows have been established and that
the equipment is operating properly.
Establish baseline vibration readings in order to determine normal running conditions. If the
unit is running roughly, then consult the factory.
Monitor all gauges to ensure that the pump is running at or near rating and that the suction
screen (when used) is not clogged
Operation with excessive discharge pressure
WARNING:
Risk of breach of containment and equipment damage. Excessive vibration levels can cause
damage to bearings, gears, seal chamber, and/or mechanical seal. Observe pump for
vibration levels, bearing temperature, and excessive noise. If normal levels are exceeded,
shut down and resolve.
Risk of explosion and serious physical injury. Do not operate pump with blocked system piping
or with suction or discharge valves closed. This can result in rapid heating and vaporization of
pumped fluid.
Risk of equipment damage and serious physical injury. Heat build-up can cause rotating parts
to score or seize. Observe pump for excessive heat build-up. If normal levels are exceeded,
shut down and resolve
NOTICE:
Cavitation can cause damage to the internal surfaces of the pump. Ensure net positive suction
head available (NPSH
A
) always exceeds NPSH required (NPSH
R
) as shown on the published
performance curve or datasheet of the pump
Operation under freezing conditions