Dover PSG Griswold 811SP Series Installatie-, bedienings- en onderhoudshandleiding - Pagina 4
Blader online of download pdf Installatie-, bedienings- en onderhoudshandleiding voor {categorie_naam} Dover PSG Griswold 811SP Series. Dover PSG Griswold 811SP Series 12 pagina's. Self-priming centrifugal pumps
Pagina afdrukken
811SP SERIES
Top
Centerline
Discharge
Figure 1 – 811SP Series
Case Part Features
INSTALLATION
For installation instructions, including baseplate
installation, grouting and shaft alignment
procedures, see the Griswold 811 ANSI Series
IOM: https://www.psgdover.com/docs/default-
source/griswold-docs/ioms/811_iom.pdf, pages
6-15.
OPERATION
For pump operation instructions, including
setting the impeller clearance, proper lubrication,
starting the pump and troubleshooting, see the
Griswold 811 ANSI Series IOM, pages 16-19.
When setting the impeller clearance of an
811SP Series pump, Table B in the Appendix of
this document is to be used to determine the
target assembled impeller clearance. With this
value, the Impeller Clearance Adjustment
procedure found in the Appendix of the Griswold
811 ANSI Series IOM should be used.
The following section on priming the pump is
unique to the 811SP Series and replaces the
"Priming" section of the Griswold 811 ANSI
Series IOM.
Priming the Pump
The Griswold 811SP Series pumps are self-
priming and do not require a foot valve or a
manual priming procedure prior to startup, aside
GRS-18000-E-01
from the initial charge of liquid for the case
Self-Venting
priming chamber. During the priming stage, the
Design
self-priming pump transfers air from the suction
side to the discharge side of the pump, drawing
a vacuum on the suction side and lifting the
liquid up the suction pipe. An accumulation of air
in the discharge piping hinders this process and
Elevated
can stall priming progress. Therefore, in some
Suction
installations an air vent or permanent bypass
Centerline for
line from the discharge piping is required to vent
Self-priming
the accumulating air pressure.
See Figure 2 – 811SP Series Priming with By-
Pass Line.
Integral
Priming
Chamber
Steps to Prime the 811SP Series Pump:
1. Re-check motor to ensure that the
2. Verify that the coupling guard and all other
3. Initially fill the pump with enough liquid to fill
4. Check that any suction isolation valves are
Figure 2 – 811SP Series
Priming with By-Pass Line
connections are correct. Check that thermal
overload relays are properly sized and set
for operation
safety-related devices and instrumentation
are in place and in working order
the priming chamber (see Table A)
completely open. Never use the suction
By-pass Line
4