Dover PSG Griswold 811SP Series Handbuch für Installation, Betrieb und Wartung - Seite 5

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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

811SP 1.5x1-6

811SP 1.5x1.5-8

811SP 2x2-10

811SP 3x3-10

811SP 4x4-10

811SP 3x3-13

811SP 4x4-13

811SP 6x6-13

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

GRS-18000-E-01

Initial Charge Volume

(in

)

310

390

1100

1160

1550

1330

1410

2980

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.