Edwards nXDS15i User Manual

▪ Ensure the maintenance is done by a suitably trained and supervised technician.
Obe
y local and naonal safety requirements.
▪ Ensure the maintenance technician is familiar with the safety procedures which
relate to the products processed by the pumping system.
▪ Check that all the required parts are available and are of the correct type before
starng work.
▪ Isolate the pump and other components from the electrical supply to prevent
accidental operaon.
▪ Allow the pump to cool for at least 3 hours before starng maintenance work.
6.2 Maintenance plan
More frequent maintenance may be required if the pump is used to pump aggressive
gases or vapours, such as solvents, organic substances and acids, or if the pump is
operated connuously at the higher end of its operang temperature.
Table 14
Maintenance plan
Operaon
Frequency
(months)
Service
indicator
Secon reference
Inspect and clean the inlet
strainer
12 No
Inspect and clean the inlet
strainer on page 39
Inspect and clean the external
fan cover if required
12 No
Clean the external fan cover on
page 39
Check the pump performance 30 Yes
Check the pump performance
(service indicator) on page 40
Replace the pump bearings 60 Yes Replace the p-seals on page 40
Replace the pump controller 120 Yes Replace the p-seals on page 40
Electrical safety check 60 No
Replace the pump controller
(service indicator) on page 41
For service indicator codes, refer to Service indicator codes on page 41.
6.3 Inspect and clean the inlet strainer
Whenever the pump is disconnected from the vacuum system, or on an annual basis, we
recommend:
▪ Removing the inlet strainer from the pump inlet (refer to Figure: nXDS scroll pump
on page 11) and remove any debris that may have accumulated.
▪ Inspecng the inlet strainer and if necessary, clean it with a cleaning soluon
suitable for the substances pumped. Ret the inlet strainer before reconnecng
the pump to the vacuum system. Refer to Connect to the vacuum system on page
28.
6.4 Clean the external fan cover
If the fan cover is not kept clean, the air ow over the pump can be restricted and the
pump may overheat.
Page 39
A73501880_G - Maintenance

Edwards nXDS15i Specifications

General

Brand	Edwards
Model	nXDS15i
Category	Water Pump
Language	English