Operation And Maintenance - Parker hyperfilter NFF380 Manual De Uso

manual).
k) Slowly open the shut-off valve upstream of the fi lter.
l) Allow air to fl ow for a few minutes and then close the conden-
sate drain.
m) Open the shut-off valve downstream of the fi lter.

5. Operation and maintenance

Avoid subjecting the unit to thermal stress caused by repeated
fl uctuations in incoming fl uid temperature.
N.B.:Always use original spares supplied by themanufacturer.
Failure to do so renders the manufacturer not liable for incorrect
unit operation.
To guarantee correct performance the Filter Element
must be substituted at least once a year.
Th e Filter, which achieves a level of fi ltration as for that in Tab. 1,
must receive the following maintenance:
substitution of Filter element
Th e Filter Element must be substituted at least once a year, or if
earlier if the following occurs (for substitution method refer to the
manual supplied with the Element):
• Filters with diff erential pressure gauge: substitute theElement-
when the arrow enters the red "Change Element" zone.
• Filters without diff erential pressure indicator or gauge: sub-
stitute the Element when there are signs of excessive pressure
drop or excessive impurities (oil, dirt moisture) downstream of
the Filter.
• Filters with Grade C Element: substitute the Element accord-
ing to the recommended Element working hours
Grades D,Q, P and S:Write the Element substitution date on the
"Remember to change your Filter Element" label supplied with the
Element, and stick it onto the Filter housing.
condensate drain:
• Filters with automatic drain: see respective manual.
• Filters with manual drain: periodically open the valve.
Disposal of used material
For the guideline waste code, refer to CER 150202.
6. Spare parts list (see Tab. 2)
It is recommended the use of original spare parts.
When placing an order quote the part's code, as well as the unit's
model no. and serial no.
2
NFF380-4500 English