Goulds Pumps 3996 - IOM - Manual (Page 27)

!
The coupling used in an ATEX classified
environment must be properly certified.
a. Install and lubricate coupling per manufacturer’s
instructions.
b. Install coupling guard. Refer to Coupling Guard
Installation and Disassembly Section Appendix
II.
!
The coupling guard used in an ATEX classified
environment must be constructed from a
non-sparking material.
s
! WARNING
Never operate a pump without coupling guard
properly installed. Refer to Appendix II for coupling
guard installation instructions. Personal injury will
occur if pump is run without coupling guard.
8. Priming - Never start the pump until it has been
properly primed. Several different methods of priming
can be used, depending upon type of installation and
service involved.
!
Pumps must be fully primed at all times during
operation.
Suction Supply Above Pump
1. Slowly open the suction valve (Fig. 8).
2. Open air vents on the suction and discharge piping,
casing, seal chamber, and seal piping, if provided, until all
air is vented and only liquid flows out.
3. Close the vents.
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
disposed 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.
3996 IOM 9/2010
23
4
Fig. 9
Fig. 10