GRS-18000-E-01
5
811SP SERIES
valve to control flow as this can/will lead to
“starving” the pump, causing cavitation and
vibration that can result in damage to the
pump
5. Ensure that all flushing and cooling lines, as
applicable, are attached and operational.
6. Open vent / by-pass line valve (if applicable)
7. Depending on the system design, either
adjust the discharge valve to be “cracked”
open or keep it fully closed during priming
8. Start the driver
9. Listen for any unexpected noise and check
for any significant vibration or indications of
binding. If any of these are observed, the
pump should be stopped immediately, and a
thorough check of the installation should be
made to determine the cause. Correct any
fault(s) prior to re-starting the pump.
10. Depending on the quantity of air that needs
to be evacuated from the suction piping and
the suction lift height, it can take up to
several minutes to achieve full prime of the
suction piping and pump. Contact either
Griswold Pump Company or your local
authorized Griswold representative for
additional information in estimating suction
system priming times.
11. Monitor the gauges on the pump to
determine when full prime has been
achieved. Gradually adjust the discharge
valve to allow the system to fill and stabilize
at the pump’s operating capacity and head.
Model
Initial Charge Volume
(in
3
)
811SP 1.5x1-6
310
811SP 1.5x1.5-8
390
811SP 2x2-10
1100
811SP 3x3-10
1160
811SP 4x4-10
1550
811SP 3x3-13
1330
811SP 4x4-13
1410
811SP 6x6-13
2980
Table A – 811SP Series
Minimum Initial Charge Volumes
NOTE:
During the priming process the suction
liquid level is drawn up into the pump as the
pump evacuates the air out of the suction line.
Therefore, care must be taken to ensure that no
air is leaking into the suction line, otherwise the
pump will not achieve prime.
REPAIR, ROUTINE MAINTENANCE,
SPARE PARTS
For instructions on pump repair, routine
maintenance, and spare parts, see the Griswold
811 ANSI Series IOM:
https://www.psgdover.com/docs/default-
source/griswold-docs/ioms/811_iom.pdf, pages
21-37.
