Goulds Pumps 3910 11th ed. - IOM User Manual
Page 23
Suction Supply Below Pump
A foot valve and outside source of liquid may be used to
prime the pump. Outside source of liquid can come from a
priming pump pressurized discharge line, or other supply
(Fig. 9 and 10).
1.
Close discharge valve and open air vents in suction
and discharge piping, casing, seal chamber, and seal
piping, if provided.
2.
Open valve in outside supply line until all air is vented
and only liquid flows out.
s
!
WARNING
When handling hazardous and/or toxic fluids, proper
personal protective equipment is required. If pump is
being drained, precautions must be taken to prevent
physical injury. Pumpage must be handled and dis-
posed of in conformance with applicable regulations.
3.
Close the vents and then the outside supply line.
Other Methods of Priming Pump
•
Priming by ejector.
•
Priming by automatic priming pump.
START-UP PRECAUTIONS
$
CAUTION
!
Ensure that pump and systems are free of foreign
objects before operating and that objects cannot
enter the pump during operation. Foreign objects in
the pumpage or piping system can cause blockage of
flow which can result in excess heat generation,
sparks, and premature failure.
$
CAUTION
!
A build up of gases within the pump, sealing system
and or process piping system may result in an
explosive environment within the pump or process
piping system. Ensure process piping system, pump,
and sealing system are properly vented prior to
operation.
1.
All equipment and personal safety related devices and
controls must be installed and operating properly.
2.
To prevent premature pump failure at initial start-up
due to dirt or debris in the pipe system, ensure the
pump can be run continuously at full speed and flow
for 2 to 3 hours.
3.
Variable speed drivers should be brought to rated
speed as quickly as possible.
4.
Variable speed drivers should not be adjusted or
checked for speed governor or overspeed trip settings
while coupled to the pump at initial start-up. If
settings have not been verified, uncouple the unit and
refer to driver manufacturer’s instructions for
assistance.
3910-1
1th IOM 5/08
23
Fig. 9
Fig. 10
4