Oerlikon GA Serie Instrucciones De Montaje página 37

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Stuffing box packing with swivel nut
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First, pre-tighten the swivel nut (1) with 1.5 times the tightening torque specified in the data sheet.
Then loosen the nut and re-tighten it with the tightening torque specified in the data sheet.
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Afterwards, tighten the lock nut (2).
Stufing box packing with bolts
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First, pre-tighten the bolts (4) of the stuffing box (3) with 1.5 times the tightening torque specified in the
data sheet.
Both types
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Start up the pump.
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After starting the pump, check and if necessary adjust the pretension of the stuffing box fairly fre­
quently (two or three times during the first few hours of operation). After the stuffing‐box seal has sta­
bilized, continuous operation can be adequately monitored at weekly intervals. Observe the safety in­
structions in Chapter 1.9.
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For packings with spring pre-load, take note of the installation dimensions and references to the pump
drawing, as necessary.
Resuming Operation of the Stuffing Box Packing after a Pump Standstill
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In case of extended downtimes, it is recommended to replace all packing rings with new ones in order
to prevent too bad a leakage of the packing during operation.
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Prior to the installation of new packing rings, always ensure that the installation location as well as the
drive shaft and the stuffing box are free from any residues or soiling, i.e. that they are absolutely clean.
4.5 Commissioning of pumps with shaft seal
For pumps with shaft seal, special measures are not required.
4.6 Start‐up of the Pump
Start-up the pump at low speed and low pressure until the medium is delivered continuously.
4.7 Restarting after Pump Standstill if Pumping Polymer
To prevent the hardening of the pumped medium in the grease gaps of the pump, the temperature of the
pump must be reduced after standstills of more than 5 hours (time depends on pumping medium used).
Failure to do so bears the risk of damage to the sliding points (bearing points) when restarting the pump
as the lubricity of the pumped medium will no longer be sufficient.
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Verzia: 05.23 Strana23