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∙
Then, tighten the counternut.
∙
Start up the pump.
∙
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.
∙
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
∙
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.
∙
Before installing the new packing rings, it must be ensured that the installation location including drive
shaft and the stuffing box are free from residues and other contamination, i.e. the entire area must be
100% clean.
4.5
Start‐up of the Pump
Start-up the pump at low speed and low pressure until the medium is delivered continuously.
4.6
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.
5.
Maintenance
5.1
Carrying out Maintenance
Maintenance activities can be carried out by Barmag's Pump Service or the operating party's trained per
sonnel.
For maintenance, Barmag provides pump workshops.
Barmag can provide relevant training for the operating party's personnel handling maintenance them
selves. In addition, you can order a service book for any type of pump from Barmag.
D
Danger!
Rotating and hot parts. Danger of crushing and burning!
Observe the safety instructions provided in Chapter 1.9.
When working at the motor or other electrical components (such as electrical heating), all parts must be
disconnected from power and protected against unintentional restart.
∙
Maintenance of the stuffing box packing (without spring pre-load)
Check the tightening torque of the stuffing box nut once per week and adjust as necessary (for the
stuffing box tightening torque, refer to the pump data sheet, Chapter 7).
∙
By default, pumps with stuffubg box seal may be used for inlet pressures of up to 10 bar. Higher inlet
pressures are possible if this has been approved by Barmag with regard to the individual case. The
tightening torque of the stuffing box specified in the technical data sheet of the pump also applies to
an inlet pressure of 10 bar. In case of higher inlet pressures, the stuffing box must be tightened
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