Edwards nES Series, Instruction Manual, Page: 43 / 56

nES630, nES750
Tools required: Tubular box wrench 16 mm.
1. When the exhaust filter elements are clogged, the integrated bypass opens and
the filters are bypassed.
2. Oil mist at the exhaust and high oil consumption are signs that the exhaust filters
are clogged.
3. The exhaust filters must be replaced more often if subjected to increased oil
cracking products at high operating temperatures and aggressive media.
4. Remove the cover with gasket. Remove the exhaust deflector by unscrewing the
bolt. Remove both demister support units by unscrewing the nuts.
5. The exhaust filters can be removed individually. Check also the float valve.
6. Plug new exhaust filters into the oil casing. Carefully insert the demister support
units over the new exhaust filters threaded bars (M6) and slightly compress the
demister springs.
7. Tighten the demister support units and the exhaust deflector. If necessary, mount
a new seal and mount the cover.
nES470, nES570
Tools required: Tubular box wrench 16 mm.
1. When the exhaust filter elements are clogged, the integrated bypass opens and
the filters are bypassed. Oil mist at the exhaust, and high oil consumption are signs
that the exhaust filters are clogged.
2. The exhaust filters must be replaced more often if subjected to increased oil
cracking products at high operating temperatures and aggressive media.
3. Remove the cover with gasket. Remove the exhaust deflector by unscrewing the
bolt.
4. Remove both demister support units by unscrewing the nuts.
5. The exhaust filters can be removed individually.
6. Check the float valve.
7. Plug new exhaust filters into the oil casing.
8. Carefully insert the demister support units over the new exhaust filters threaded
bars (M6) and slightly compress the demister springs.
9. Tighten the demister support units with the 4 nuts and the exhaust deflector. If
necessary, mount a new seal and mount the exhaust plate.
07/2020 - Page 39
A35104880_B - Adjustments and servicing procedures